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US 4,051,200 AGranted
Thermoplastic vinyl chloride polymer compositions with improved processing properties
AssigneeBASF SE
InventorsPetr Simak, Karl Herrle, Franz Haaf, Guenter Hatzmann
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Abstract
Mixtures based on vinyl chloride polymers and small amounts of a copolymer of an ester of acrylic acid or methacrylic acid. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.
Claims9
A thermoplastic composition comprising a mixture of
- A from 99.9 to 80 parts by weight of a homopolymer of vinyl chloride or a copolymer of vinyl chloride with up to 30 percent by weight of one or more other monomers copolymerizable with vinyl chloride, and
- B from 0.1 to 20 parts by weight of a copolymer of an acrylic acid ester or a methacrylic acid ester, which copolymer contains
- B1. from 99.9 to 60 percent by weight of copolymerized units of an acrylic acid alkyl ester or methacrylic acid alkyl ester of 2 to 6 carbon atoms in the alcohol component,
- B2. from 0.1 to 30 percent by weight of units which contain a lactone ring structure and
- B3. from 0 to 39.9 percent by weight of units of one or more other copolymerizable monomers, the percentages being based on the above copolymer B.
2 more elements
Dependencies are inferred from the claim text.