Improvements in adhering textile materials to rubber

摘要

In a process comprising applying a vulcanizable rubber coating to a textile material and heating the assembly to vulcanize 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 amino phenol, m phenylene diamine, resorcinol monoacetate, resorcinol diacetate, 1,5-naphthalene diol or a partially reacted resorcinol-formaldehyde resin, and an N-methylol carboxylic acid amide so that upon heating effect vulcanization a resin is formed in situ between the meta disubstituted benzene, naphthalene diol or resorcinol formaldehyde resin and the amide. Suitable N-methylol carboxylic acid amides are N-methylol acetamide, N-methylol butyramide, N-methylolacrylamide, N methylol methacrylamide, N-methylol succinimide, N-methylolmaleimide, N methylolitaconimide, N-methylol citraconimide, N methylol phthalimide, N-methylolhexylhydrophthalimide, N methylol 1,2,3,6-tetrahydrophthalimide and N methylol-3, 6-endomethylene-D 4 tetrahydrophthalimide. 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, antioxidants (e.g. condensation products of acetone and diphenylamine), sulphur, zinc oxide, accelerators, e.g. N-tertiary butyl-2-benzothiazole sulphonamide, and softening oils.ALSO:In a process comprising applying a vulcanizable rubber coating to a fabric, e.g. cotton, regenerated cellulose and nylon fabrics, and heating the assembly to vulcanize 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 fabric a meta-disubstituted benzene in which each of the substituents is an OH,NH2 or OCOCH3 radical, e.g. resorcinol, m-amino phenol, m-phenylene diamine, resorcinol monoacetate, resorcinol diacetate, 1,5-naphthalene diol or a partially reacted resorcinol-formaldehyde resin, and an N-methylol carboxylic acid amide so that upon heating to effect vulcanization a resin is formed in situ between the meta disubstituted benzene, naphthalene diol or resorcinol-formaldehyde resin and the amide. Suitable N-methylol carboxylic acid amides are N-methylol acetamide, N-methylol butyramide, N methylolacrylamide, N methylol methacrylamide, N-methylol succinimide, N-methylolmaleimide, N methylolita conimide, N-methylol citraconimide, N methyol phthalimide, N-methylolhexhydrophthalamide, N methylol 1,2,3,6-tetrahydrophthalimide and N methylol-3,6-endomethylene-D 4 tetrahydrophthalimide. The rubber may be natural rubber or a synthetic rubber produced from butadeine 1,3,isoprene or 2,3 dimethyl butadiene1,3 or copolymers thereof, e.g. butadiene-styrene and butadiene-acrylonitrile rubbers. The rubber may also contain carbon black antioxidants (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 vulcanize 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 amino phenol, m phenylene diamine, resorcinol monoacetate, resorcinol diacetate, 1, 5-naphthalene diol or a partially reacted resorcinolformaldehyde resin and an N-methylol carboxylic acid amide so that upon heating to effect vulcanization a resin is formed in situ between the meta-disubstituted benzene 1, 5-naphthalene diol or resorcinol formaldehyde resin and the amide. Suitable N-methylol carboxylic acid amides are N-methylol acetamide, N-methylol butyramide, N-methylolacrylamide, N-methylol methacrylamide, N-methylol succinimide, N-methylolmaleimide, N-methylolita conimide, N-methylol citraconimide, N-methylol phthalimide, N-methylolhexhydrophthalimide, N-methylol 1, 2, 3, 6-tetrahydrophthalimide and N-methylol-3, 6-endomethylene-D 4 tetrahydrophthalimide. 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, antioxidants (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 a tire cord fabric.