| 摘要 |
In a process for the production of block-graft polymers, a mixture of (a) one or more polyolefines or copolymers of olefines with other unsaturated monomers and (b) one or more synthetic linear polyamides is homogenized at a temperature between 50 DEG and 350 DEG C. with addition of 0,05 to 10% by weight, with reference to the total weight of the mixture of all components of a free radical-forming catalyst. Specified polyolefines are those derived from ethylene, propylene, styrene, iso-butylene, butene-1 and butene-2 and optionally butadiene, isoprene, acrylic acid, methacrylic acid, esters of acrylic and methacrylic acid, acrylonitrile, acrylamide, methacrylamide, vinyl chloride, vinylidene chloride, vinyl acetate, vinyl propionate, a -methyl styrene, vinyl toluenes and vinyl isobutyl ether. Specified catalysts are cumene hydroperoxide, dicumyl peroxide, t-butyl hydroperoxide, di-t-butyl peroxide, 2:5-di-t-butyl-peroxy-2:5-dimethyl hexane, dibenzoyl peroxide, lauroyl peroxide, t-butyl perbenzoate, azo-bis-iso-butyronitrile and azo disulphonates which may be dissolved in benzene, toluene, xylene, dioxane, cyclohexane, butanone, dimethyl formamide, carbon tetrachloride or tetrahydrofurane and hydrogen peroxide, sodium peroxide and ammonium persulphate. The examples describe the preparation of block-graft polymers from:-(1) polyethylene and poly-S -caprolactam; (2) polyethylene and polyhexamethylene adipamide; (3) polypropylene and poly-S -caprolactam; (4) polypropylene and poly-caprylic lactam; (5) polypropylene and polyhexamethylene adipamide; (6) polypropylene and polyhexamethylene sebacamide; (7) polystyrene, polyethylene and poly-S -caprolactam; (8) poly-iso-butylene, polyethylene and poly-S -caprolactam and (9) an acrylonitrilestyrene copolymer and poly-S -caprolactam.
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