| 摘要 |
Polyethylene oxides of grade 4-40, preferably linear, but optionally feebly branched and contng. OH end grps. are excellent plasticisers for copolymers of maleic acid, half-ester or half-amides thereof with polycarbonates of formula: (where R' = OH, CONH2 and O or C1-6 oxalyl groups, R" = a polymer segment derived from copolymers of maleic anhydride with a vinyl monomer such as ethylene, isobutylene, vinylacetate, vinylchloride, vinylalkyl ether or styrene; n 10.
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