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2,108,810
enema Feb. 22, 1938
UNITED STATES ‘PATENT. OFFlCE
'
2,108,810
I
TRANSPARENT MATERIAL AND- COMPOSI
TION OF MATTER FOR PRODUCING
SAME
‘Theron G. Finn] and Donald E. Drew, Kenmore,
N. Y., assignors, by mesne assignments, to E. I.
du Pont de Nemours & Company, Wilmington,
Del., a corporation of Delaware
.
'
_
\
No Drawing. Application June 26, 193
Serial No. 732,444
32 Claims. (CI. 91-68)
This invention relates to the art of coating. "cizer for the lacquer. Also, theusual plasticizers
More particularly, it relates to compositions for , incorporated in the lacquers do not soften the
moistureproo?ng, with or without simultaneously cellulose base but merely plasticize- the ingree
.
‘
transparentizing, cellulose bases, and also to the dients constituting the lacquer.
'
5 final product which is suitable for use as a wrap
ping tissue.
In the treatment of ?exible materials, such as
regenerated cellulose sheeting and paper, either
of the porous or non-porous type. with compo
10 sitions for the purpose of moistureproo?ng, with
or without simultaneous transparentizatlon, it is,
mixture of ethyl acetate, toluol and monobutyl
in many cases, necessary to subject the treated
ether of ethylene glycol; or any other
mixture. The cellulose softeners should
compatible, at least in degree, with the
solids andshould be partly soluble and
solvent
also be
lacquer 15
prefer
ably miscible with the lacquer plasticizer. As .
materials to an elevated temperature to remove
the solvents of the compositions. Because of the
.15 loss of moisture from the regenerated cellulose
sheeting or paper occasioned by the elevated
temperature treatment, the products are- in
many cases more brittle than is desirable.
‘illustrative examples of such cellulose softeners ‘
This
may be mentioned the glycols, for example, eth
is true even when the lacquers contain plasti
cizers for the- ingredients thereof. The previous
20
ly mentioned coated materials also tend to lose
ylene glycol, diethylene glycol, triethylene gly-' 20.,
col, isopropylidene glycol and the like, or glycol
derivatives, such as glycol monacetate or other
some oftheir ?exibility when exposed to a dry
atmosphere.
The cellulose softeners which are contemplated
by the instant invention are water-soluble, pos
sess low volatility, are soluble in lacquer solvents,
‘such as a mixture of ethyl acetate, ethyl alcohol,
butyl acetate and toluol; or mixtures of toluol
and monobutyl ether of ethylene glycol; or a‘
mixture of naphtha and ethyl alcohol; or a
"
-
We have found that‘we can overcome the
above-mentioned disadvantages‘ by incorporating
in the selected composition asubstance which
will soften the material being treated.
. mono or of ethers or esters of glycol, used alone
or in admixture with each other or in admixture
with substances, such as triethanolamine, glyc 25
erin, the di, tri or poly glycerols, glyceryl mono
or diacetate, mono or di esters or ethers of
Itis, therefore, an object of this invention to ‘ glycerol, sulphonated castor oil or other sulpho-.
provide a, composition suitable for moistureproof
30
49 GI
40
nated, oils.
-
.
The quantity of cellulose softener'which is in 30
ing, with or without transparentizing, cellulose
materials and containing a. softener for the cel - ccrporated in the lacquer may vary within wide
limits. Satisfactory results have been secured
lulose base.v
‘
Another object of this invention is to provide when 1% to 50% of cellulose softener, the per
a composition containing a glycol, said compo~ centage being based on the lacquer solids, is in.-.
sition being adapted to moistureproof cellulose corporated in the lacquer. The'expresslon “lac 35
‘materials.
’
-
quer‘ solids” employed in this specification is‘
Other objects will become apparent from the‘ intended to de?ne those ingredients of the lac
quer exclusive of the lacquer solvents. The quan
following description and appended claims.
tity of the speci?c cellulose softener should not
In one aspect, the instant invention contem
plates a composition which, when applied to vbe such as to render the ?nal product sticky.
cellulose bases, will moistureproof the same. The Hereafter are set forth the maximum percent
compositions are also characterized by the fact ages of several illustrative speci?c cellulose sof
that when they are applied to an opaque base, . teners based on the lacquer solids which give the
. such ‘as porous paper or a non-porous base, such
_, as glassine paper, they will also transpwentize
desired results;
said base.
position, whereby the brittleness of the ?nal
. product is materially reduced.
It is'to be noted
that the cellulose softenerwhich is incorporated
in the composition need not function as a plasti
.
Percentage in “
soften"
In accordance with the principles of this in
vention, there is incorporated in the composition
a cellulose softener. ,The cellulose base, when
the ‘composition is applied thereto, absorbs a
sufficient quantity of the softener from the com
-
lacquer solids
Permit
Ethylene glycol ................. ..
~
48. 2
Diethylene glycoL- '
.-..
29. 3
'l‘rlethylene glycol---
_-.-
23. 6
isopropylidene glycol
50. 5
The cellulose base which is treated'may consist
of regenerated cellulose sheetingvipr paper, either
50
9,108,810
of the porous or non-porous type. When the base
is of a non-transparent material, such as paper,
then the composition is of such a nature as to
alcohols or equivalmt material in the solvent to
act as a blending agent for the cellulose softener
simultaneously moistureproof and transparentize
cohol content of the solvent may vary between
the same. When the base consists of transparent
5% and 20%, the percentage being based on the
regenerated cellulose sheeting. the composition
solvent alone.
is of the type which will moistureproof the same
without in any way impairing the desirable char-,
acteristics, i. e.,' transparency and ?exibility of
10 the surface of said cellulose sheeting. The sur
faces of the ?nal product are further character
ized in that they are glossy and possess good sur
face slip.
As illustrative compositions which may be used.
15 in accordance with the instant invention, may be
mentioned the following:
(1) Cellulose derivative, resin, plasticizer,
wax, solvent;
(2) Cellulose
20
1
derivative, plasticizer, wax.
'
,
‘
The proportions of the lacquer solids are such
that, when applied to regenerated cellulose sheet
ing, a transparent, moistureproof, non-tacky coat
ing is secured. when the lacquer is to be used 10
for transparentizing and molstureproo?ng paper,
the proportions of the ingredients should be such
that the composition,,after a major portion of the
solvents, for example 90% thereof, has been evap
orated at an elevated temperature, the lacquer 15
solids w?l possess the characteristics of hot ?ow.
Such compositions are more fully explained in
copending application, Serial No. 717,938, filed
March 29, 1934.
In order to more clearly explain the instant in '20
solvent;
(3) Cellulose derivative, resin, wax, solvent;
(4) Cellulose derivative, wax, solvent;
25
and the rest of the lacquer ingredients. The al
(5) Resin, plasticizer, wax, solvent;
(6) Resin, wax, solvent.
In formulating any of the previously-mentioned
moistureproo?ng lacquer compositions containing
the cellulose softener, it may in many cases be
necessary to adjust the solvent mixtures of the
lacquers so as to produce compatibility of the
vention, the following illustrative compositions,
consisting of the ingredients in approximately
the percentages (by weight) set forth, are given:
Example I
Solids:
.
Rosin
30 cellulose softener with the other lacquer ingre
.
'
Percent
57.0
Ethyl cellulose____________________ __
28.5
Paraffin __________________________ __
7.4
Triethylene glycol ____________ __"_____
7.1
dients, both solids and solvents.
The cellulose derivative of the lacquer may be
cellulose nitrate, cellulose acetate, etc., or cellu
ester ether.
-
.
Percentv
Toluene __________________________ .._
85.0
Monobutyl ether of ethylene glycol---
15.0
The resin may be a natural or synthetic resin
or resin-like material, either soft or brittle. Such
resins may include gum dammar, rosin, hydro
genated rosin, hydrogenated rosin esters, gum
40 mastic, shellac, the rosin ester of ethylene glycol
or diethylene glycol, Amberol, the glyptals, the
rosin ester of glycerin or any other commonly
used lacquer resin.
'
As thelacquer plasticizer, any cellulose deriva
45 tive lacquer plasticizer may be used. Dibutyl
'
'
Solids
content _________ ___ _____________ ..
-
6.1
Paraffin
' 7.3
Diethylene glycol..__.._v ___________ _-_..
13.4
'
Solvent:
100.0
Percent
Low ?ash naphtha ________________ __
90.0
Acetone _________________________ __
1.0
Ethyl alonhnl
9.0
___
_
'
100.0
Percent
Solids content ________________________ __ 11-22
Example III
Solids:
Percent
Ester gum
_
_’
Ethyl cellulose_____'_ ______________ __
softener.
Any waxy ‘or wax-like substance having a
65 moistureproo?ng effect may be used. The pre
ferred moistureproo?ng waxes are the parafdns,
34.1
6.4
Para?lnuui____..___..;__.___________
4.3
Diethylene
glycol __________ .._' _____ __
Solvent:
'
42.5
Dibutyl phthalate _________________ _._
Ethyl alcohol
It is preferable to use a
76 fairy" large proportion of ethyl, butyl or other _. Solids content
12.7
100.0
Percent
High ?ash naphtha _______________ ___
Acetone __________ ..'_ ______________ __'
contain a large proportion of waxsolvent, such as v
toluene or naphtha.
11-22
Ethyl meta toluene sulphonamlde---
ticizer, and diethylene glycol as the cellulose
The solvent composition of the lacquer will de
pend upon the nature of the cellulose derivative,
70 upon the nature of the resin, the wax andalso
the use to which the lacquer is to be put. Due
to the presence of the wax, the solvent will also
Percent
Solids:
>
Percent
Rosin
48.8
Ethyl cellulose; ___________________ __
24.4
' meta toluene sulphonamide as the lacquer plas
particularly the para?lns of high melting points.
100.0
‘
Example II
phthalate, dibutyl tartrate, tricresyl phosphate,
diphenyl phosphate and ethyl meta toluene sul
phonamide are illustrative examples thereof.
Some plasticizers are not completely miscible
50 with the cellulose softener, so that with such a
plasticizer only a limited amount of softener
may be incorporated in the lacquer. In the pre
ferred embodiment of the invention, the plasticizer
and cellulose softener are of the type which are
55 mutually miscible throughout the entire range of
plasticizer and cellulose softener concentration.
Such a system will permit the widest latitude in
the use of the cellulose softener in the lacquer.
As an illustrative combination wherein the ingre-i
60 dients are miscible in all proportions is ethylene
30
100.0
Solvent:
lose ether, such as ethyl cellulose, or any cellulose
35
25
80.0
2.0
18.0 70
100.0
Percent
11-21 75
2,108,810
Solids:
,
‘Example I”
Percent
gig; $3,‘;11i;;,;;,-;;;,;;;,;;;-,,;,;;;---
methylene glycol ______ __v______-____ __
7.0
nlethylene glycol-"d --------------- --
10-5
‘Monoeth? ether of glycero ________ __
.133
Sulphonated castor oil“--. ________ __
10.6
'
Tom)!
.
I
percent
‘
1
c
'
Solvent:
'
64.8
15.0
Pentasol acetate ------------------- -_
16-2
Monobutyl ether of ethylene glycoL---
16.2
Ethyl alcohol ...... -..'_' _____________ __
2.8
Percent
Example V
100.0
c
'
25
'
‘
1.6
15.1
7.6
pending application, Serial No. 717,938, ?led Mar.
, 100.0
solv-errglim'L
29, 1934.v When the base consists of regenerated
cellulose, the base is coated in any suitable man .25
Penigfg
Monobutyl ether of ethylene glycol___
ner with the selected composition, and, after re
15”
moval oi the excess composition,v subjectedto a
1004)
temperature at least equal to the melting point
of the wax in the composition.
_
' '
30
solids’ mnfmt
‘
Example VI
Rosin
35
.-
Pew-eat
. 745
The ratio ~01 the lacquer to the weight of the 30
paper depends. upon the thickness and type of
paper which has been used and also the degree
percent‘
to which the paper has been calendered. In any
7&9
caserit is necessary to have sumcient lacquer
_
Ethyl meta toluene sulphonamldeun
paramn
methylene glycol __________ __>______._
._
.
'
7,7
7_7
7,7
solids applied to the paper to cover all the sur 35
face ?bers in addition to ?lling all the inter
spaces between the ?bers. Within reasonable
,
limits, the greater the quantity of lacquer solids
‘ 1009
40
applied to the papers, the greater will be the
transparency of the ?nished product. Further, 40
,
songlgihol
'
-
_
-
Pangaea‘; _ title thickness of ftltctel ?nal produc: giciéated by
Monobutyl ether of ethylene glycol"
e econom cs 0
15")
_ 1009
t
f
Solids:
.
Diethylene glycol ________________ n
20 0
to produce a final product, ‘the average thickness
‘ 1009
of) which is 0.0008" to 0.0012".v Such a product
corresponds to one having‘ at least 10% by weight
Panza“:
Monobutyl ether of ethylene glycol'“
60
solids mnfmt
15'0- more transparent will be the ?nal product‘. When
100 o the base consists of regenerated cellulose sheet
ing, satisfactory results have been secured when
regenerated cellulose sheeting, approximately 60
0.0009" thick, is provided with coatings on each
Percent
side thereof.0.00002" to 0.0001", and preferably
1/2 second nltrocotton _________ _-‘___-
v1.4
°-°°°°5
Triethanolamme __________________ __
Triethylene glycol ________________ __
143
143
For the purposes of this speci?cation and
claims, we de?nelmoistureproof materials asthose 65
_
Ethyl acetate ______________ _.___ ____ __
‘72,0v
.
' '
15 Solids content
Percent
12-16
,
_
hour, over a period of 24 hours, at approximately
39.5" 0.:05" C., the relative humidity» of the 70
atmosphere at one side of the ?lm being'main- -
100-0
,
or ?lms, permit the passage of not more than 690
grams of water vapor per 100 square meters per
‘Ethyl ,m-nhnl
'
41)
Monobutyl ether of ethylene glycol__‘ .240
~
'thlck-
which, in the form of continuous, unbroken sheets -
100.0
percent;
Solvent;
70
55
For any type of paper, the thinner the base, the
25-30
Example VIII
50
of the lacquer solids based on the final product.
'
'
Percent
_
‘Solids:
65
paper,'having an average thickness of 0.0007",
133
itreedom
shows fremarkably
good light transmission atng
"
rom haze when impregnated an coa e
_
sow‘géhol
When the base
consists of non-porous paper, such as glassine
665
' Paramn
'
the total quantity of the lacquer solids is at least
Percent
Rosin ______________________ "Y ____ __
V50
5 ac ory re
of porous paper does not exceed 0.002” in thick
e 25% by weight of the product.
Example v"
a
‘ness, and is preferably 0.0005" to 0.0014", and 45
2M0
3°11“ c°n 91"
e process.
sults have been secured when the base consisting
Percent
45
Percent
When the base to be treated consists of paper, 20
either porous or non-porous, the procedure is
substantlallythe same as that set forth in c'o
.
,
.
solids;
-
Solids content_________ __'_____I___'___I_Y_‘____ 12-15 I
Para?ln
' "
Triethylene glycol ____________ _-___-___
Dlethylene glycol__.‘___s ______ ..-v____..
'
15
10-16
' 4,
10
‘
s°ndEséhyl cellulose
»
Percent
Ethyl acetate__-..--_-c _____________ __
100,0
..
>
‘05.0
»
Solids content
‘
Percent
52.6
""'
-
20
-
26.3
\
»
Example IX '
Rosin ester of diethylene glycol _____ __
.
Monobutyl ether of ethylene glycol";
15
'
2:8
solvent;
"
.
olids.
at second mtrccottonnu'. ......... -_
Paramn
10
8'
.
3
.
tained at least at 98%, and the relative‘ humidity
of the atmosphere at the other side being main
tained at such a'value as to give a humiditydif
ferential of at least 95%.
75
4
2,108,810
I
.
Moistureproo?ng coating compositions are de
constant speed of 12" per minute. The force‘
fined as those which, when laid down in the form
in grams required to pull the sheets apart is taken
as a measure of the ‘strength of the bond and is
of a thin, continuous, unbroken film applied uni
formly as a coating with a total coating thick
ness not exceeding 0.0005" to,both sides of a
referred to herein as “heat-sealing value".
* -
/Though the invention has been described in
sheet of regenerated cellulosemf thickness ap- 1v connection with compositions for simultaneously
proximately 0.0009", will produce a coated prod; moistureproo?ng and transparentizing papers, it
is obvious that the principles thereof are equally
not which is moisturepropf.
,'
applicable'to compositions for transparentizing
For the purposes of experimental tests,‘ es
10'
10 pecially for those materials adaptable as coating paper without moistureproo?ng the same.
Since it is obvious that various modi?cations
compositions, moistureproof materials include
those substances, compounds or compositions may be made in the above description without de
parting from the nature or spirit thereof, this in
which, when laid down in the form of a continu
ous, unbroken ?lm applied uniformly as a coat
15 ing with a total coating thickness not exceed
ing 0.0005" to both sides of a sheet of regen
vention is not restricted thereto except as set
15
forth in the appended claims.
We claim:
'
erated cellulose of thickness approximately
0.0009", will produce a coated sheet which will
permit the passage therethrough of not more than
20 690 grams of water vapor per 100 square meters
1. A composition for simultaneously trans
parentizing and moistureproo?ng sheets of cellu
lose material comprising a lacquer containing a
per hour over a period of approximately 24 hours,
at a temperature of 39.5‘ C.i°.5° C. (preferably
39.5“ C.:0.25° C.), with a water vapor pressure
differential of 50~55 mm. (preferably 53.4:031
stance, selected from the class which consists of
25 mm.) of mercury. For convenience, the number
of grams of water vapor passed under these con-'
- ditions may be referred to as "the permeability
moistureproo?ng waxy substance and a sub
20
glycols and glycol derivatives, for softening said
cellulose material.
I
2. A composition for simultaneously trans
parentizing and moistureproo?ng sheets of cellu 25
lose material comprising a lacquer containing a
moistureproo?ng waxy substance and approxi
mately 1% to approximately 50% by weight, based
value". An uncoated sheet of regenerated cellu
lose having a thickness of approximately 0.0009" on the solid ingredients, of a substance, selected
30 will show a permeability value of the order of. from the class which consists of glycols and glycol
derivatives, for softening said cellulose material.
6900.
3. A composition for simultaneously trans
In many cases, the moistureproofness is 20, 30,
40, 50 and up to 100 or more times better than parentizing and moistureproo?ng sheets of cellu
the untreated paper. The product is relatively lose material comprising a lacquer containing a
moistureproo?ng waxy substance and a dihydric 35
impermeable to air and other gases. It is odor
ether alcohol for softening said cellulose material.
less, glossy and possesses a surface which ap
4. A composition for simultaneously trans
proaches optical smoothness. It has an advan
tage over moistureproofed regenerated cellulose parentizing and moistureproo?ng sheets of cellu
in cost and, additionally, in more favorable ex-,
40 pansion and shrinkage characteristics. The ex
tent of expansion and shrinkage with changes in
lose material comprising a lacquer containing a
moistureproo?ng waxy substance and approxi 40
mately 1% to approximately 50% by weight, based
humidity is practically negligible compared with
so
55
,
00
65
75
on the solid ingredients, of a dihydric ether
either coated regenerated cellulose sheeting or alcohol for softening said cellulose material.
5. A composition for simultaneously trans
coated glassine paper. ‘As compared with waxed
papers, besides being more transparent and less parentizing and moistureproo?ng sheets of cellu
hazy, it shows a higher area coverage per pound lose material comprising a, lacquer containing a
of- product and is less smeary. It is ?exible but moistureproo?ng waxy substance and diethylene
not sticky and has a dry-feeling surface, so that glycol for softening said cellulose material. ‘
6. A composition for simultaneously trans
several sheets will slip very readily over each
other. This easy slip facilitates handling of the parentlzing and moistureproo?ng sheets of cellu
lose material comprising a lacquer containing a
product in automatic wrapping machines.
The product of this invention is truly» heat
moistureproo?ng waxy substance and up to ap
sealable. When the product herein described is proximately 30% by weight, based on the solid in
heat-sealed, there will be produced a joint or seal gredients, of diethylene glycol for softening said
which is stronger than that produced by the heat cellulose material.
7. A composition for simultaneously trans
sealing of materials of the prior art, such as that
parentizing and moistureproo?ng sheets of cellu
described in United States Letters Patent No.
lose material comprising a lacquer containing a
1,737,187;
The following test has been devised to deter
moistureproo?ng waxy substance and triethylene
mine and test the strength of the joints before glycol for softening said cellulose material.
8. A composition for simultaneously trans
mentioned:
parentizlng and moistureproo?ng sheets of cellu
Strips of ~ the coated material 1.5” wide are
superposed on one end, so that the opposite faces lose material comprising a lacquer containing a
of the ?lm are in contact. A seal is made across moistureproo?ng waxy substance and up to ap
the width of the material by imposing thereon a proximately 24% by weight, based on the solid
heated iron weighing 1,500 grams for 2' seconds. ingredients, of triethylene glycol for softening said
The iron is so designed as to cause a seal to be
cellulose material.
9. An article of manufacture comprising a sheet
made of a width of 1?, of an inch, the iron being
maintained in any suitable manner at a tempera
of cellulose material combined with a trans
parentizing and moistureproo?ng composition
ture above 130° C. and below 200° C., as, for in
stance, 150° C. Two strips so sealed are opened comprising lacquer solids containing a moisture
at the free end and placed in a stretching device, proo?ng waxy’substance and a substance, selected
such as a Suter testing machine, by gripping each from the class which consists of glycols and glycol
end of the sheet in suitable clamps, one of which derivatives, for softening said cellulose material.
10. An article of manufacture comprising a
is ?xed and the other of which is moved away at a
45
50
55
60
65
70
5;
sheet of cellulose material combined with a trans
pare 'tizing and moistureprooflng composition
comp ising lacquer solids containing a‘ moisture
proo?ng waxy substance and approximately 1%
to approximately 50% by weight, based on said
composition, of a substance, selected from the
class which consists of glycols and glycol deriva
tives, for softening said cellulose material.
>
11. An article of manufacture comprising a‘
10 sheet of cellulose material combined with a trans
parentizing and moistureprooflng composition
comprising lacquer solids containing a moisture
proo?ng waxy substance and a~ dihydric ether
alcohol for softening'sald cellulose material.
15
12. An article of manufacture comprising a
sheet of cellulose material combined with a trans
~parentizing and moistureproo?ng composition
comprising lacquer solids containing a moisture
proo?ng waxy substance and approximately 1%
20 to approximately 50% by weight, based on the
' composition, of a dihydric ether alcohol for
softening said cellulose‘ material.
.
13. An article of manufacture comprising a
sheet of cellulose material combined with a trans
25. parentizing and moistureproo?ng composition
comprising lacquer solidscontaining a moisture
proo?ng waxy substance and diethylene glycol for
softening said cellulose material.
14. An article of} manufacture comprising , a
30 sheet of cellulose material combined with a trans
21. An article of manufacture comprising thin,
porous paper impregnated with a transparentiz
ing and moistureproofing composition comprising
lacquer solids containing a moistureproo?ng
waxy substance and a dihydric ether alcohol for
softening said paper.
.
22. An article of manufacture comprising thin,
porous paper impregnated with a transparentiz-v
ing and moistureprooflng composition compris
ing lacquer solids containing a moistureproo?ng 10
'waxy substance and approximately 1% to ap
proximately 50% by weight, based on the com
position, of a dihydrlc ether alcohol for soften
ing said paper.
‘
.
23. An article of manufacture comprising thin, 15
porous paper impregnated with a transparentiz
ing and moistureproo?ng composition compris
ing lacquer solids containing a‘ moistureproo?ng
waxysubstance and diethylene glycol for soften
ing said paper.
20
I ‘
_ 24. An article ofmanufacture comprising thin,
porous paper impregnated with a transparentiz
ing and moistureproo?ng composition compris
ing lacquer solids containing a moistureproofing
waxy substance and up to approximately 30% by '
weight, based on the composition, of diethylene
glycol for softening said paper.
25
>
25. An article of manufacture comprising
glassine paper coated with a transparentizlng and
rnoistureprooflng composition comprising lacquer
30
parentizing and ‘ moistureproo?ng composition
solids containing a moistureproo?ng waxy sub
comprising lacquer solids containing a moisture
proo?ng waxy substance and up to approximately
stance and a dihydric ether alcohol for softening
30% by weight, based on the composition, of di-v
26. An article of manufacture comprising
glassine paper coated with a transparentizing and 35
ethylene glycol for softening said cellulose mate
rial.
15. An
article
_ q
of
' , manufacture
r ,
comprising
a
I sheet of cellulose material combined with a trans
parentizing and moistureproo?ng composition
40 comprising lacquer solids containing a moisture
proo?ng waxy substance and triethylene glycol
for softening said cellulose material.
16. An article ,of ‘ manufacture comprising a
sheet of cellulosematerial combined with a trans
said paper.
1
,
moistureprooiing composition. comprising lacquer
solids containing a moistureproo?ng waxy sub
stance and approximately 1%‘ to approximatelyv
50% by weight, based onthe composition, of’a
dihydric ether alcohol for softening said paper.
27. An article of manufacture comprising
glassine paper coated with a transparentizing and _ .
moistureproo?ng composition comprising lacquer
solids containing a moistureproo?ng waxy sub
parentizing- and moistureproo?ng composition -' stancev and. diethylene glycol for softening said 45
comprising lacquer solids containing a moisture
28. An article of manufacture comprising
proo?ng waxy substance and up to approximately»
24% by weight, based on the composition, of tri
glassine paper coated with a transparentizing and
moistureproo?ng composition comprising lacquer
ethylene glycolgfor softening said cellulose mate
paper.
'
-
Y
solids containing a moistureproo?ng waxy sub 50
50 rial
1'}. An article of manufacture comprising re- _ stance and up to approximately 30% by weight,
based on the composition, of diethylene glycol for
generated cellulose sheeting coated with a com
position comprising lacquer solids containing a
softening said paper.
moistureproo?ng waxy substance and a dihydric -
29. A transparent, ?exible and ‘moistureproof
article of manufacture comprising a sheet of cel 55
55 ether alcohol for softening said regenerated cell
lulose,
.
-
lulose material combined with a composition com
_‘
18. An article of manufacture comprising re
generated cellulose sheeting coated with a com- .
position comprising'lacquer solids containing a
moistureproo?ng.‘ waxy substance and approxi
mately 1%» to approximately 50% by weight,
prising lacquer solids containing a transparentiz
ing agent, a moistureproo?ng waxy substance and
a substance selected from, the class’ which con
sists of _ glycols and glycol derivatives, the in
60
gredients being present in proportions to produce
a transparent, ?exible andmoistureproof product.
30. A transparent, ?exible and moistureproof
based on the composition of a dihydric ether
alcohol for softening said regenerated cellulose.
19. An article of manufacture comprising re ' article of manufacture comprising a sheet‘ of cel
65 generated cellulose sheeting coated with a com
lulose material combined with a composition com 65
position comprising lacquer solids containing a prising lacquer solids containing a transparentiz- _
moistureproo?ng waxy substance and diethylene ing agent, a moistureproo?ng waxy substance and
glycol for softening said regenerated cellulose.
a dihydric ether alcohol,- the ingredients being
20. An article of manufacture comprising re
70 generated cellulose sheeting coated with a com
present in proportions to produce a transparent,
?exible and moistureproof product. '
'
’
position comprising lacquer solids containing a
31. A transparent, ?exible and moistureproof
moistureproo?ng waxy substance and up to ap
article‘ of manufacture comprising a sheet of‘
paper combined with a composition comprising
proximately 30% by weight, based on the com
position, of diethylene'glycol for softening sai
regeneratedcellulose.
,
~
70
lacquer solids containing a transparentizing
agent, a moistureproo?ng waxy substance and a 75
substance selected from the class which consists
of glycols and glycol derivatives, the ingredients
being present in proportions to produce a. trans
lacquer solids containing a transparentizing
parent, ?exible and moistureprooi product.
present in proportions to produce a transparent, I
32. A‘ transparent, ?exible and moistureproof
article of manufacture comprising a sheet of
paper combined with a composition comprising
?exible and moistureproot product.
agent, a moistureproo?ng waxy substance and a
dihydric ether alcohol, the ingredients being
»
'I'HERON G. FINZEL.
DONALD E. DREW. (
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