Patent GB-966943-A (GB)
Title: Improvements in adhering textile materials to rubber
IPC: C08G8/28
Filed: 1962-10-01
Abstract: A rubber composition suitable for treating textile materials in, for example, the production of laminates comprises a meta disubstituted benzene in which each of the substituents is an OH,NH2 or OCOCH3 radical, e.g. resorcinol, m aminophenol, m phenylene diamine, resorcinol monoacetate and resorcinol diacetate, 1,5-naphthalene diol or partially reacted resorcinol-formaldehyde resin and 1,8-di(methyleneamino)-p-methane or an azomethine having the formula: <FORM:0966943/C3/1> in which R, R1 and R2 are alkyl radicals having 1-8 carbon atoms or phenyl, benzyl or 2-phenyl ethyl radicals so that after application to the textile material and heating to effect vulcanization a resin is formed in situ.  Suitable azomethines are tert-butylazomethine, tert-octylazomethine, neopentyldimethylcarbinylazomethine, a, a-di-methylbenzylazomethine, triphenylmethylazomethine, a, a-diphenylbenzylazomethine, tri-benzylmethylazomethine and tri-(2-phenylethyl)-methylazomethine. The rubber may be natural rubber or a synthetic rubber produced from butadiene 1,3,isoprene or 2,3-dimethyl butadiene-1,3 or copolymers thereof, e.g. butadiene-styrene and butadiene-acrylonitrile rubbers. The rubber may also contain carbon black, anti-oxidants, e.g. condensation products of acetone and diphenylamine, sulphur, zinc oxide, accelerators, e.g. N-tertiary butyl-2-benzothiazole sulphenamide, and softening oils.ALSO:In a process comprising applying a vulcanizable rubber coating to a textile material and heating the assembly to vulcanise the rubber, the adhesion of the rubber to the textile material is improved by incorporating in at least the portion of the assembly adjacent the interface of the textile material a meta disubstituted benzene in which each of the substituents is an OH, NH2 or OCOCH3 radical, e.g. resorcinol, m aminophenol, m phenylene diamine, resorcinol monoacetate and resorcinol diacetate, 1, 5-naphthalene diol or partially reacted resorcinol-formaldehyde resin and 1, 8-di (methyleneamino)-p-menthane or an azomethine having the formula <FORM:0966943/D1-D2/1> in which R, R1 and R2 are alkyl radicals having 1-8 carbon atoms or phenyl, benzyl or 2-phenyl ethyl radicals so that upon heating to effect vulcanisation a resin is formed in situ. Suitable azomethines are tert-butylazomethine, tert-octylazomethine, neopentyldimethylcarbinylazomethine, a , a  dimethylbenzylazomethine, triphenylmethylazomethine, a , a  diphenylbenzylazomethine, tribenzylmethylazomethine and tri- (2 phenylethyl) methylazomethine. The rubber may be natural rubber or a synthetic rubber produced from butadiene 1, 3, isoprene or 2, 3 dimethyl butadiene 1, 3 or copolymers thereof, e.g. butadiene-styrene and butadieneacrylonitrile rubbers.  The rubber may also contain carbon black, anti oxidants, e.g. condensation products of acetone and diphenylamine, sulphur, zinc oxide, accelerators, e.g. N tertiary butyl-2-benzothiazole sulphenamide, and softening oils.  The textile material may be cotton, regenerated cellulose or nylon and may be in the form of cords or of a tire cord fabric and may be used to make laminates.