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Патент USA US2109143

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Patented eb. 22, 1938
"UNITED STATES PATENT OFFICZE.
I DRY DISINFECTANT
2,109,143 'ron
I
sums,
Fritz Wol?', Berlin, Germany, assignorto Scher
ing-Kahlbaum A. G., Berlin, Germany, a cor
poration of Germany
'~
No Drawing. Application March 20', 1934, Serial
No. 716,503.
In Germany March‘ 22, 1933 >
8 Claims. (Cl. 167-38)
This invention relates to dry disinfectant for bined in a stable form with the substance
seeds and more particularly to non-dusting dry
disinfectants.
_
~
claimed.
'
'
The following examples serve to illustrate the
It is known that the dusting of dry disinfect5 ants may be prevented by the addition of certain
oils, such as petroleum oils,‘ resin oil and some
others; But the latter has a detrimental in-
invention without, however, limiting the latter
to the same.
5
Example 1
Grams
?uence upon the fungicidal power of the dis-
Mercury chloride __________________ __'_____
infectant in case the fungicide contained therein
Wool fat ___________________ __, __________ __
10 is water-soluble and present only in compara-
Isocholesterin __________________________ __
-- 10
tively small quantities. To illustrate this detrimental effect of the addition of such oils to said
Lanoli-n___; _______________ l. ________ _____'
Lecithin ___ ___________ __,___________ __'_'____
-—
-
type of seed disinfectants the following examples
Water ________________ __'_; _________ ___.___
3
are given:
Talcum _______________ ___ _______________ __
90
15
'
‘
Dry seed disinfectant consisting of 5% of. mercury chloride and 95% of talcum and applied in
15
\
' '
Grams
Mercury chloride ——————————————————————— ——
5
Isocholestenn —————————————————————————— -—
4
Talcum ———————————————————————————————— —— 91 20
mercury chloride, 90% of talcum and 5% of
2O para?in oil still shows some bunt ears.
The reason for the insufficient fungicidal
power of a, seed disinfectant containing such oils
Example 3
Grams
in order
to prevent excessive dusting
is that the
.
.
.
action of the mercury chloride is partly pre25 vented by the water-insoluble oil ?lm covering
fungicide.
2
Example 2
concentrations of 2:1000 yields bunt-free wheat.
The same disinfectant consisting of 5% of
the
‘5 .
Mercur-y c moride
Lammn
Talcum
_______________________ __
"
One object of this invention consists in elimi-
_
Example 4
nating this disadvantage and in producing non-
30 For this purpose fatty substances possessing a
5
5
9O 25
>
dusting seed disinfectants of high efficiency.
-
‘
Grams
Mercury chloride _______________________ __
Isocholesterim
5 _
'2 30
high water-absorbing capacity are added to the
water _
____
3
latter instead of the water-insoluble oils used
Taloum ______ a‘ ________ __.____. ______ ______
90
hitherto.
Such substances
are
'
for instance,
,
wool fat, wool wax, lanolin, isocholesterin and
35 the like. Wool fat is capable of absorbing at
room temperature 21/2 times its weight of water
Example5
Grams 35
Mercury Chloride --------------------- __‘-5
whereby a salve-like stable mass is- formed, which
Lecithin _______________________________ __
is especially suitable for the purpose in question.
Talcum _______________________________ _.,,_ 91
It has furthermore been found that the addi
40 tion of the above mentioned substances exerts a
very favorable in?uence upon the adhesive ca
4
Instead of mercury chloride other fungicidal
substances or mixtures of the same may also be 40
used, as follows from the further examples:
pacity of the seed disinfectants. Thereby the
amount of said addition can be increased without
Example 6
reducing the fungicidal power until a friable
vGrams
45 mass is Obtaine?VOrtho hydroxyphenyl mercury chlorlde..____ 10 45
When using only small amounts of watersoluble fungicides the additions claimed offer
Lanolm ________________________________ __
Tait-11m
___
the advantage that the fungicide can be dissolved
in water and added to said additions whereupon
50 the ?lling material is gradually impregnated with
the mixture of the fungicide and the addition,
'
,
'
'
_
‘
Example 7
.
Grams 50
Anhydride of the hydroxyphenyl mercury
which prevents the dusting and increases the
adhesive capacity of the seed disinfectant; _ The
hydrmo'?e
»
_.._
Brought into solution by phenol __________ __
water present has‘ no disturbing effect upon the
Lecithin
55 proportions of said disinfectants; for, it is com-
4
86
Kaolin
16
5
'
~
71 5'5
2
2,109,148
Example 8‘
_
-
-
'
2. A non-dusting, dry disinfectant for seeds of
-
,
Grams
Sodium salt of. the cyano mercury cresol____
10
Water _________________________________ __
10
Isocholesterin __________________________ __
5
"l‘alcum ______ "1.; ______________________ __
75
'
Example 9
1
Grams
Sodium salt of .the para hydroxy phenyl
mercury acetate ______________________ __
10
Wool fat _______________________________ __
5
. Talcum _________ __-_ ____________________ __
85
Example 10
Grams
.Copper ethyl
sulfate ____________________ __ 20
Wool wax _______________________________ __
10
Talcum _________________ -4 ______________ -_
70
'
Grams
Methyl mercury nitrate __________________ __
5
Lecithin ________________________________ __
5
Kaolin __________________________________ __
90
Wheat infected by bunt (Tillctia trz'tz‘ci) is
treated with said disinfectants preferably in the
proportion of 2:1000. The power of germination
is between 98 to 99% within 5 days while no
bunt ears are observed. The above disinfectants
do not dust and show an excellent adhesive ca
pacity. They are excellent disinfectant agents
not only against the bunt of wheat (Tilletia tri
tici) but are also effective against other seed
diseases as for instance the stripe- disease of
barley (Helminthosporium gramineum), the late
smut of cats (Ustilago avena’z) etc.
It has been ascertained that an addition of
a compound of arsenic to the above stated prep
arations will further increase their e?'ects, es
specially when applied against root or crown
rot (Phoma heme);
.
To all the above preparations yet other inert
substances may be added e. g., kaolin and the
different fungicides e. g., copper carbonate, cop
per chloride, and similar substances, also plant
stimulants e. g., manganese chloride and equiva
-
disclosed in the foregoing speci?cation without
departing from the invention and from the prin
ciples set forth herein and in the claims annexed
What I claim is:
waxy substances.
'
' 3. A non-dusting, dry disinfectant for seeds
of good adhering qualities comprising fatty water
insoluble substances having an absorptive ca
pacity for water taken from the class consisting
of lecithin, isocholesterin, wool fat and its com
ponents, and fungicidal mercury compounds,
said disinfectant being substantially free from
water-repell'ant fatty and waxy substances.
4. A non-dusting, dry disinfectant for seeds of
insoluble substances having an absorptive ca
pacity for water taken from the class consisting
of lecithin,, isocholesterin, wool fat and its com
ponents, and water-soluble fungicidal mercury
compounds, said disinfectant being substantially -
free from water-repellent fatty and waxy sub 25
stances.
5. A non-dusting, dry disinfectant for seeds of
good adhering qualities comprising wool fat, a
water-soluble fungicidal mercury compound and
inert expletive substances‘, said disinfectant being 30
substantially free from water-repellant fatty and
waxy substances.
6. A non-dusting, dry disinfectant for seeds of
good adhering qualities comprising fatty water
insoluble substances having an absorptive ca
pacity for water taken from the class consist
>
»
'
1. A non-dusting, dry disinfectant for seeds of
good adhering qualities comprising fatty water
insoluble substances having an absorptive ca
pacity for water ‘taken from the class consist
ing of lecithin, isocholesterin, wool fat and its
components, and fungicidal compounds, said
disinfectant being substantially free from water
repellant fatty and waxy substances.
$5
ing of lecithin, isocholesterin, wool fat and its
components, and fungicidal organic mercury
compounds, and containing an arsenic compound,
said disinfectant being substantially free from
water-repellant fatty and waxy substances.
7. A non-dusting, dry disinfectant for seeds
of good adhering qualities comprising fatty
water-insoluble substances having an absorptive
capacity for water taken from the class consist 45
ing of lecithin, isocholesterin, wool fat and its
components, - and fungicidal
Various changes may be made in the details
hereto.
ing of lecithin, isocholesterin, wool fat and its 5
components, water, fungicidal compounds and
inert expletive substances, said disinfectant being
substantially free from water-repeliant fatty and
good adhering qualities comprising fatty water
Example 11
'
lents.
good adhering qualities comprising fatty water
insoluble substances having a limited absorptive
capacity for water taken from the class consist
compounds, said
compounds being taken from the class consisting
of mercury and copper compounds, said disin
fectant being substantially free from water-re‘ 50
pellant fatty and waxy substances.
8. A non-dusting, dry disinfectant for seeds of
good adhering qualities comprising fatty water
insoluble substances having an absorptive -ca
pacity for water taken from the class consist
ing of lecithin, isocholesterin, wool fat and its
components, and fungicidal organic mercury
compounds, said disinfectant being substantially
free from water-repellant fatty and waxy sub
stances.
FRI'IZ WOLFF.
55
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