Processing agent having a C.sub.8 -C.sub.22 component
AssigneeDegussa AG
InventorsVolker H. Schull, Detlef Arnoldi
Life of this patent
Estimating the term…
Abstract
A processing agent for polyvinyl chloride and other thermoplastic polymers. The processing agent is a copolymer which contains a monomer whose homopolymer has a T.sub.g .gtoreq.65 C. and contains 3 to less than 75% by weight of a comonomer which has a C.sub.8 -C.sub.22 alkyl component. The alkyl component should be apportioned in such a fashion that the transmission of the copolymer in ethyl acetate is at least 90% in the case of a 10% solution.
Claims17
A thermoplastic composition comprising a thermoplastic poly vinyl chloride polymer and a copolymer which is different from the thermoplastic polymer, said copolymer containing, as base units, a monomer whose homopolymer has a T.sub.g >65.degree. C., the molecular weight of said homopolymer being so high that there is substantially no change in T.sub.g upon further increasing the molecular weight, and said copolymer containing at least 3 to less than 75% by weight of a comonomer which has a C.sub.10 -C.sub.22 alkyl component, the amount of the alkyl component being selected so that a 10% (wt./wt.) solution of the copolymer in ethyl acetate has a light transmission of at most 90% (560 nm, 1 cm), and said copolymer is obtained from an emulsion polymerization process.
Dependencies are inferred from the claim text.