Patent GB-422354-A (GB)
Title: Improvements in and relating to the production and use of compounds suitable for useas vulcanisation accelerators
IPC: C08K5/00
Filed: 1933-07-10
Abstract: Accelerators for rubber vulcanization are prepared by reacting a ketone-amine with a 2-mercaptoarylthiazole.  The term "ketoneamine" comprises the condensation product of ammonia or an amine with a ketone.  The products may be used alone or admixed with a basic organic nitrogen-containing activating accelerator such as diphenylguanidine.  In examples the accelerating properties in various rubber mixes of the following products are described:--(1) the condensation product of equimolecular proportions of diacetone-amine and 2-mercaptobenzthiazole; (2) the condensation product of equimolecular proportions of vinyldiacetoneamine and 2-mercaptobenzthiazole; (3) the product derived by condensing molar proportions of diphenylamine and acetone in presence of a catalyst or condensing agent such as iodine, and the product with 2-mercaptobenzthiazole; (4) the condensation product of 6-methyl-2-mercaptobenzthiazole and diacetoneamine in molar proportions; (5) the condensation product of 2-mercaptonaphthathiazole and diacetoneamine in molar proportions. Other accelerators referred to are the reaction products of triacetonamine, triacetonediamine, n - methyl - triacetoneamine, trimethyldiethylketopiperidine with 2 - mercaptobenzthiazole, 2 - mercaptotolylthiazole, 2 - mercapto - a  - or b  - naphthathiazole, and reference is also made to the following condensation products:--phenyl-a -naphthylketone (1 mol.) with aniline (1 mol.) and the product with mercaptobenzthiazole (1 mol.); acetophenone (1 mol.) with aniline (1 mol.) and the product with mercaptobenzthiazole (1 mol.); dibenzylketone (1 mol.) with aniline (1 mol.) and the product with mercaptobenzthiazole (1 mol.); and to the following activating accelerators for use in conjunction with the foregoing accelerators:--di - o - nitrotolylguanidine, triphenylguanidine, 2 . 4 - diaminodiphenylamine, 4 . 4<1> - diaminodiphenylmethane.ALSO:Accelerators for rubber vulcanization are prepared by reacting a ketone-amine with a 2-mercaptoarylthiazole. The term "ketoneamine" comprises the condensation product of ammonia or an amine with a ketone.  The products may be used alone or admixed with a basic organic nitrogen-containing activating accelerator, such as diphenylguanidine.  In examples, the accelerating properties in various rubber mixes of the following products are described: (1) diacetoneamine (1 mol.) condensed with 2-mercaptobenzthiazole (1 mol.); (2) vinyldiacetoneamine (1 mol.) condensed with 2-mercaptobenzthiazole (1 mol.); diphenylamine and acetone condensed together in molar proportions in presence of a catalyst or condensing agent such as iodine, and the product condensed with 2-mercaptobenzthiazole; (4) diacetonamine (1 mol.) condensed with 6-methyl - 2 - mercaptobenzthiazole (1 mol.); diacetonamine (1 mol.) condensed with 2-mercaptonaphthathiazole (1 mol.).  Reference is made to accelerators prepared by reacting triacetonamine, triacetonediamine, m-methyltriacetoneamine, trimethyldiethylketopiperidine with 2-mercaptobenzthiazole, 2-mercaptotolylthiazole, 2-mercapto-a - or b -naphthathiazole, and reference is also made to the following condensation products: phenyl-a -naphthylketone (1 mol.) with aniline (1 mol.) and the product with mercaptobenzthiazole (1 mol.); acetophenone (1 mol.) with aniline (1 mol.) and the product with mercaptobenzthiazole (1 mol.); dibenzylketone (1 mol.) with aniline (1 mol.) and the product with mercaptobenzthiazole (1 mol.); and to the following activating accelerators for use in conjunction with the foregoing accelerators: di-o-nitrotolylguanidine, triphenylguanidine, 2,4-diaminodiphenylamine, 4,41-diaminodiphenylmethane.