Alpha-Olefin Copolymers

摘要

1,154,535. Copolymers. E. I. DU PONT DE NEMOURS & CO. 19 Jan., 1968 [19 Jan., 1967], No. 3054/68. Heading C3P. [Also in Division D1] Copolymers containing at least 50 mole per cent of units -CH 2 CR 1 R 2 - where R 1 is hydrogen, halogen or C 1-8 hydrocarbon and R 2 is hydrogen, halogen or methyl, and 0À1 to 25 mole per cent of units derived from C 3-8α,#- ethylenically unsaturated carboxylic acids and which contain a group of formula where C 1 is a carbon atom in the main polymer chain, R 3 and R 4 are hydrogen or C 1-6 hydrocarbon and X1 is -O- or -NH-, may be prepared by reacting a copolymer containing at least 50 mole per cent of units -CH 2 CR 1 R 2 - and 0À1 to 25 mole per cent polymerizedα,#- ethylenically unsaturated carboxylic acid halide having 3 to 8 carbon atoms with a 3-hydroxy or 3-amino oxetane. The acid halide copolymers may be prepared by reacting copolymers of ethylene, propylene, butene-1, styrene, pentene- 1, hexene-1, heptene-1, 3-methylbutene-1, 4- methyl pentene-1 or vinyl or vinylidene halides with acrylic, methacrylic, ethacrylic, itaconic, maleic or fumaric acid with a chlorinating agent such as phosphorus pentachloride. The reaction with the oxetane may be effected in the presence of an acid acceptor, e.g. pyridine or a tertiary amine. The products may be applied to materials containing amine, amide, hydroxyl and carboxyl groups, e.g. nylon, cotton, wool and polyesters, to increase shrink resistance. Reaction with such materials is preferably effected in the presence of a Lewis acid, e.g. boron trifluoride, aluminium trichloride, tin tetrachloride and phosphorus pentafluoride. Many suitable reactants are listed and examples describe the reaction of ethylene/methacrylyl chloride copolymers with (I, V and VI) 3-amino oxetane and (II) 3-hydroxy oxetane, and of an ethylene/ethyl acrylate/acrylyl chloride copolymer with (III) 3- amino oxetane.