| 摘要 |
Polyamide compositions (I) are prepared having superior mechanical properties and which contain mineral particles plus an organosilane coupling agent of the formula where X is a hydrolysable group capable of reacting with an hydroxyl group; Y is H or a monovalent hydrocarbon group; R is a C1-20 alkylene group, Z is a group capable of reaction with a polyamide; n = 0 or 1; a = 1, 2 or 3; b = 0, 1 or 2; c = 1, 2 or 3; a + b + c = 4. The (I) prepared contain >=25% volume of mineral particles having a length: diameter ratio of up to about 25:1. The polyamides used are either (i) polylactams prepared by polymerising monomers of the formula:- where R1 is an alkylene group of pref. 5-12C atoms, or (ii) the reaction products of dicarboxylic acids and diamines. |
