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US 4,357,267 AGranted
Thermoplastic moulding compositions of cellulose esters
AssigneeBayer Aktiengesellschaft
InventorsHeinrich Alberts, Winfried Fischer, Friedemann Muller, Horst Peters, Christian Leuschke, Hans-Peter Baasch
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Abstract
Transparent thermoplastic moulding compositions having improved mechanical properties consist essentially of a cellulose ester of aliphatic C.sub.1 -C.sub.5 -carboxylic acids and a graft copolymer of an ethylene vinyl ester copolymer having grafted thereon polymerized units of vinyl esters and/or alkyl esters of acrylic and/or methacrylic acid and, optionally, C.sub.2 -C.sub.4 -olefins.
Claims4
Thermoplastic moulding compositions, consisting essentially of
- (1) from 1 to 99% by weight of a cellulose ester of one or more aliphatic C.sub.1 -C.sub.5 -carboxylic acids, and
- (2) from 99 to 1% by weight of a graft copolymer of
- (a) from 5 to 90% by weight of an ethylene-vinyl ester copolymer, containing from 5 to 75% by weight of incorporated vinyl ester, as the graft substrate and polymerized units of
- (b) from 95 to 10% by weight of vinyl esters and/or alkyl esters of acrylic and/or methacrylic acid, and
- (c) from 0 to 20% by weight of C.sub.2 -C.sub.4 -.alpha.-olefins,
- the sum of components (1) and (2) and (a) to (c) always amounting to 100% by weight.
3 more elements
Dependencies are inferred from the claim text.