公开(公告)号：GB843377A

公开(公告)日：1960-08-04

申请号：GB1779258

申请日：1958-06-04

Applicant: BASF AG

Inventor： CANTZLER ERIKA ,  DANIEL WALTER ,  GEHM ROBERT ,  HOELSCHER FRIEDRICH ,  RIEDER FRITZ ,  SCHUSTER CURT

IPC: C08J5/06

Abstract: An adhesive for bonding polyamides to rubber comprises a mixture of 80 to 40% (all percentages by weight) of a 10 to 20% aqueous solution of a resorcinol-formaldehyde condensate at a molar ratio of formaldehyde to resorcinol of from 1:2 to 2:1 and p 20 to 60% of a 20 to 60% aqueous dispersion of a copolymer derived from 30 to 70% butadiene, 67 to 20% styrene and 3 to 10% of a N-vinyl-imidazole (including substituted derivatives) or a N-vinylcarbazole (including substituted derivatives). For use with a polyamide fabric, the fabric may be soaked or impregnated with the adhesive mixture, allowed to dry and then pressed on to the rubber at 150 DEG C. with a pressure of about 20 kg/cm2. If foils of polyamides are used, they are preferably pre-treated with an aqueous solution of a resorcinol-formaldehyde condensate. Example (1) describes a conventional preparation of a butadiene-styrene-N vinylimidazole copolymer and also the preparation of a suitable resorcinol-formaldehyde condensate. A finely meshed fabric of polyamide fibres is bonded with a mixture of these two components on to an unvulcanised natural rubber. In another example N-vinyl-benzimidazole replaces N-vinylimidazole.