Processing aid compositions

Details Processing aid compositions Processing aid compositions

C - Chemistry, Metallurgy

08

L

400/100, 400/302

C08L 27/06 (2006.01) C08L 9/00 (2006.01) C08L 23/02 (2006.01) C08L 31/04 (2006.01) C08L 33/08 (2006.01)

Patent

CA 1253641

- i- PATENT APPLICATION of ISMAIL SAMY RABINOVIC HUBERT THOMANN GERARD GUTH and WILLIAM EARL CARTER for IMPROVED PROCESSING AID COMPOSITIONS DN 83-36 MSA:plb ABSTRACT OF DISCLOSURE This invention is directed to improved processing aid compositions for vinylchloride polymers. The improved processing aid compositions are formed from an intimate admixture of a conventional processing aid for vinylchloride polymers and a dispersion aid polymer. The dispersion aid polymer acts to disperse the processing aid polymer in the vinylchloride polymer, reducing the tendency of the processing aid to form lumps or gels in the vinylchloride polymer. The weight ratio of the processing aid polymer to the dispersion aid polymer in the improved processing aid composition ranges from 99.5 to 0.5 to 90 to 10. The vinylchloride polymer contains from about 0.5 to 5 parts by weight of the improved processing aid composition to 99.5 to 95 parts of vinylchloride polymer.

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