Patent ID: 6440231
Filing Date: 2002-08-27
Classification: B29C,C08J,C23C

Abstract:
A process for the production of a rubber-to-metal bond comprising at least the following steps:a) treating one or more metal parts with an aqueous solution with a pH value of 3.5 to 5.5 which consists essentially of: (i) 4 to 20 g/l of phosphate ions, (ii) 0.1 to 1 g/l of free or complexed fluoride, and (iii) 0.04 to 1 g/l of nitrate ions. b) after said treating, rinsing said one or more metal parts, and c) after said treating and said rinsing, vulcanizing on said one or more metal parts a member selected from the group consisting of natural and synthetic rubbers.