Patent GB-387534-A (GB)
Title: Improvements in and relating to the production of plastic masses, varnishes, putty masses and the like
IPC: C08K5/11
Filed: 1932-03-24
Abstract: Esters of aliphatic, aromatic and hydroaromatic dicarboxylic acids in which one at least of the two aliphatic alcohol components contains eight or more carbon atoms, are used as gelatinizing or softening agents in the preparation of plastic masses, putties, varnishes, &c. having a basis of cellulose esters or ethers in particular nitrocellulose and cellulose acetate.  The esters may be used in conjunction with other gelatinizing agents; and resins, fillers, dyestuffs, &c, may also be included in the compositions.  Suitable esters are the lauryl and cetyl esters of phthalic, succinic, adipic, sebacic, hydrophthalic and hexahydrophenylene diacetic acids, and similar mixed esters containing one methyl, ethyl, propyl, or butyl radicle.  The esters may be made by heating the free acids or their anhydrides with equivalent quantities of the alcohols preferably in the presence of boric acid or other catalyst, and with the addition of a solvent capable of carrying off the water produced; or, alternatively, they may be obtained by heating alcohols of higher molecular weight with dicarboxylic acid esters of alcohols of lower molecular weight.  In examples, a varnish is prepared from collodion wool, ester gum, butyl acetate, butyl alcohol, lauryl phthalate and benzene; a putty from nitrocellulose, damar resin, butyl alcohol, butyl acetate, and the ester of adipic acid and the alcohols obtained by high pressure reduction of vegetable or animal oils, together with toluene and alcohol and suitable filling materials such as lithopone and slate dust; and a transparent material suitable for the production of wire glass windows, from acetyl cellulose, butyl oleyl hydrophthalate, benzyl alcohol and acetone.ALSO:Esters of aliphatic, aromatic, and hydroaromatic dicarboxylic acids in which one at least of the two aliphatic alcohol components contains eight or more carbon atoms, are used as gelatinizing or softening agents in the preparation of varnishes &c. having a basis of cellulose esters or ethers in particular nitrocellulose and cellulose acetate.  The esters may be used in conjunction with other gelatinizing agents; and resins, fillers, dyestuffs, &c. may also be included in the compositions.  Suitable esters are the lauryl and cetyl esters of phthalic, succinic, adipic, sebacic, hydrophthalic and hexahydrophenylene diacetic acids, and similar mixed esters containing one methyl, ethyl, propyl or butyl radicle.  In examples, a varnish is prepared from collodion wool, ester gum, butyl acetate, butyl alcohol, lauryl phthalate, and benzene.ALSO:Esters of aliphatic, aromatic and hydroaromatic dicarboxylic acids in which one at least of the two aliphatic alcohol components contains eight or more carbon atoms, are used as gelatinizing or softening agents in the preparation of plastic masses, putties, &c. having a basis of cellulose esters or ethers in particular nitrocellulose and cellulose acetate.  The esters may be used in conjunction with other gelatinizing agents; and resins, fillers, dyestuffs, &c. may also be included in the compositions.  Suitable esters are the lauryl and cetyl esters of phthalic, succinic, adipic, sebacic, hydrophthalic and hexahydrophenylene diacetic acids, and similar mixed esters containing one methyl, ethyl, propyl or butyl radicle.  The esters may be made by heating the free acids or their anhydrides with equivalent quantities of the alcohols preferably in the presence of boric acid or other catalyst and with the addition of a solvent capable of carrying off the water produced; or, alternatively, they may be obtained by heating alcohols of higher molecular weight with dicarboxylic acid esters of alcohols of lower molecular weight.  In examples, a varnish is prepared from collodion wool, ester gum, butyl acetate, butyl alcohol, lauryl phthalate and benzene; a putty from nitrocellulose, dammar resin, butyl alcohol, butyl acetate, and the ester of adipic acid and the alcohols obtained by high pressure reductions of vegetable or animal oils, together with toluene and alcohol and suitable filling materials such as lithopone and slate dust.