Patent ID: 11873394
Assignee: KANEKA AMERICAS HOLDING, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 12:
13. A method of improving processing ability of a polyvinyl chloride resin composition, the method comprising:
adding at least one processing aid to a polyvinyl chloride resin composition comprising a polyvinyl chloride resin and at least one filler,
wherein:
from 0.1 to 30 parts by weight of the at least one processing aid is added to 100 parts by weight of the polyvinyl chloride resin composition,
the at least one processing aid has a styrene-equivalent weight average molecular weight of from 300,000 to 8,000,000, and
the at least one processing aid comprises at least 60 wt % of a polymer obtained by polymerizing monomers comprising from 40 to 99.9 wt % of styrene, from 1 to 7 wt % of at least one acid group-containing monomer, and from 0 to 59.9 wt % of at least one vinyl monomer.