Patent GB-342288-A (GB)
Title: Process for the manufacture of lacquer coatings, films, plastic masses and artificial threads
IPC: C08K5/16
Filed: 1929-09-26
Abstract: Lacquers having a cellulose ether base are rendered stable against ageing by adding to the starting materials a quantity up to 5 per cent, calculated on the weight of ether, of a non-volatile or difficultly volatile organic base such for example, as the substituted guanidines e.g. triphenylguanidine, biguanides such as b -naphthyl-biguanide, aralkylated aromatic amines such as benzyl and dibenzulaniline, carbazole, N-ethylcarbazole and amino benzoic acid esters.  The basic substance is added at any stage of manufacture at which the mixture is in a liquid state.  Non-volatile inorganic basic fillers e.g. zinc white, lead white, lead oxide and aluminium oxide, may also be added.  In examples --(1) 7 parts by weight of butyl cellulose is dissolved in a mixture of 11 parts ethylacetate, 11 parts benzene, 5 parts toluene, 10 parts xylene, 10 parts alcohol and 9 parts ethylglycol with the addition of 0,15-0,2 part of N-ethyl-carbazole to form a lacquer; for a covering lacquer 10 parts zinc white is added together with organic pigment dyestuffs, if desired, and 1-2 parts of phthalic acid dibutylester: (2) 20 parts benzyl cellulose, 2 parts tricresylphosphate and 0,4-0,5 part of b -naphthylbiguanide are dissolved in 75 parts benzene and 5 parts alcohol to form stable films.ALSO:Artificial threads, films, lacquers, plastic masses, &c., having a cellulose ether base are rendered stable against ageing by adding to the starting materials a quantity up to 5 per cent, calculated on the weight of ether, of a non-volatile or difficulty volatile organic base such for example, as the substituted guanidines, e.g. triphenylguanidine, biguanides such as b -naphthyl-biguanide, aralkylated aromatic amines such as benzyl and dibenzylaniline, carbazole, N-ethylcarbazole and amino benzoic acid esters.  The basic substance is added at any stage of manufacture at which the mixture is in a liquid state. Non-volatile inorganic basic fillers, e.g. zinc white, lead white, lead oxide and aluminium oxide, may also be added.  In examples -(1) 7 parts by weight of butyl cellulose is dissolved in a mixture of 11 parts ethylacetate, 11 parts benzene, 5 parts toluene, 10 parts xylene, 10 parts alcohol and 9 parts ethylglycol with the addition of 0,15-0,2 part of N-ethyl-carbazole to form a lacquer; for a covering lacquer 10 parts zinc white is added together with organic pigment dyestuffs, if desired, and 1-2 parts of phthalic acid dibutylester: (2) 20 parts benzyl cellulose, 2 parts tricresylphosphate and 0,4-0,5 part of b -naphthylbiguanide are dissolved in 75 parts benzene and 5 parts alcohol to form stable films.ALSO:Artificial plastic masses having a cellulose ether base are rendered stable against ageing by adding to the starting materials a quantity up to 5 per cent, calculated on the weight of ether, of a non-volatile or difficulty volatile organic base, such, for example, as the substituted guanidines, e.g. triphenylguanidine, biguanides such as b -naphthyl-biguanide, aralkylated aromatic amines such as benzyl and dibenzyl-aniline, carbazole, N-ethylcarbazole and amino benzoic acid esters.  The basic substance is added at any stage of manufacture at which the mixture is in a liquid state.  Non-volatile inorganic basic fillers, e.g. zinc white, lead white, lead oxide, and aluminium oxide may also be added.  In examples: (1) 7 parts by weight of butyl cellulose is dissolved in a mixture of 11 parts ethylacetate, 11 parts benzene, 5 parts toluene, 10 parts xylene, 10 parts alcohol and 9 parts ethylglycol with the addition of 0,15-0,2 part of N-ethyl-carbazole to form a lacquer; for a covering lacquer 10 parts zinc white is added together with organic pigment dyestuffs, if desired, and 1-2 parts of phthalic acid dibutylester: (2) 20 parts benzyl cellulose, 2 parts tricresylphosphate and 0,4-0,5 part of b -naphthyl-biguanide are dissolved in 75 parts benzene and 5 parts alcohol to form stable films.