Патент USA US2406649код для вставки
Patented Aug.27, 1946 2,406,649 UNITED STATES PATENT OFFICE 2,406,649 LIQUID COATING COMPOSITION AND PROCESS OF MAKING SAME . George Witty, Long Island City, N. Y. No Drawing. Application November 30, 1944, Serial No. 566,031 ‘ 1 Claim. . (Cl. 260-45) 1. Many efforts have heretofore been made to produce acoating composition of this character, but whether by reason of expense of manufacture or other inherent defects, they have not been productive of satisfactory results. The object of this invention is to produce a liquid coating composition suitable for coating paper and paper goods, metals, glass, wood, and similar substances, and having the useful proper ties among which may be the qualities of being economical, free from precipitation, blushing, , blooming and sagging, which defects are fre quently encountered in the formulation and ap 2 With the formula given above, I prefer to use a solvent composed of 300 parts acetone, 150 parts _ ethyl alcohol, 50 parts ethyl lactate and 20 parts triethyl citrate. All the parts are by weight. Ifdesired a soluble dye or lakes of any particu lar color may be incorporated in the mixture, to produce an unlimited variety of colors or shades. , The ingredients are placed in a mixing ma chine of commercial use and thoroughly dissolved 10 until a uniform ?owable solution is obtained. The mixture is then strained and placed in con tainers ready for use. - The “Santolite M. H. P.” is a toluene sulfon amide-formaldehyde resin. See page 563 of plication of ?nishing coating compositions. Another object of this invention is to provide 15 Physical Chemical Examination of Paints, Var a liquid coating composition which is free'flow nishes, Lacquers and Colors by Henry A. Gardner ing, ?exible, highly transparent, resistant to wear 1939. and weather, and which will not crack, chip or Owing to the great miscibility or physical _ , a?inity of said resins a especially Santolite A further object of this invention is to produce‘ 20 resins for the cellulose acetate or organic deriva a liquid coating composition which will retain tive of cellulose, it is possible to dispense with permanently its opacity, color, and brilliancy, and the employment of the usual plasticizers in mak which is adapted for application by brushing, ing the solutions, dopes, varnishes, preparations, dipping or spraying. ?lms, compositions, articles or products as the A further object of this invention is to provide 25 resin can be intimately incorporated with and a liquid coating composition which can be made assimilated by the cellulose acetate or cellulose suitable for being colored fast to light by the ad derivative even with a relatively small proportion peel off. dition of basic dyestuff. ‘ of a solvent or solvent mixture. A further object of. this invention is to provide ' Although one speci?c embodiment and certain a liquid coating composition which is substan preferred ingredients and proportions thereof tially non-in?ammable, that exhibits a marked have been described, it should be understood that resistance to discoloration by light and heat; that equivalent ingredients may be used without de does not have ingredients which tend to hydrolize parting from the spirit or scope of the invention, and form acidic products, that is relatively low as expressed in the following claim. in cost, that is highly transparent; that does not 35 Having now described my invention whatI cause a bloom, cloudiness, silking and sagging; claim as new and desire to secure by Letters and that is otherwise highly satisfactory for its Patent is: intended purpose.‘ ' ' A liquid coating composition comprising 100 ' The following formula produces excellent‘re parts cellulose acetate, 50 parts toluene sulfon sults. However, it is understood that this for amide-formaldehyde resin, 20 parts triphenyl mula is given merely by way of illustration, and phosphate and ‘10 parts acetanilide dissolved in that the invention is not limited thereto. solvent mixtureponsisting of 300 parts ‘acetone, Parts 150 parts ethyl alcohol, 50 parts ethyl lactate and Cellulose acetate ________________________ __ 100 20 parts triethyl citrate, all the parts are by Ground Santolite rosin _________________ __ 50 45 weight. Triphenyl phosphate ____________________ __ 20 Acetanilide 10 ' GEORGE WI'ITY.