| abstract |
1482029 Elastomeric composition KAO SOAP CO Ltd 24 Jan 1975 [28 Jan 1974] 3165/75 Heading C3P A non-crystalline elastomeric resin composition consists essentially of a homogeneous blend of 100 parts by weight of I, a homopolymer or a copolymer (85-99À9% by weight) of vinyl chloride, and 110-160 parts by weight of II, a thermoplastic polyester-urethane; this polyester-urethane is formed by reacting an organic urethane-forming diisocyanate with a polyester diol having a M.Wt. of at least 4000 and which has been obtained by reacting a saturated aliphatic C 5 -C 8 dicarboxylic acid with a polyol component consisting essentially of a mixture of (a) 1,6-hexanediol and (b) at least one diol selected from 1,2-propane diol, n-butane 1,3-diol and C 3 - 8 diols with one or more CH 3 -side chains, the molar ratio (a) : (b) being 70 : 30-90 : 10. In the examples vinyl chloride homopolymer is blended with polyester-urethane prepared by the reaction of 4,41- diphenylmethane diisocyanate with poly-1,3- butylene/1,6-hexylene adipate. The diol (b), as well as being n-butane 1,3-diol and 1,6- hexanediol, may also be 1,2-propane diol, neopentyl glycol and trimethylpentane diol. The dicarboxylic acid, as well as being adipic acid, may also be pimelic, suberic or methyl-adipic acids. |