Method for preventing plasticizer bleeding on polyvinyl chloride

Details Method for preventing plasticizer bleeding on polyvinyl chloride Method for preventing plasticizer bleeding on polyvinyl chloride

1979-06-22

1981-06-09

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

204167, 204169, 260 23XA, 260 304N, 260 306R, 260 312N, 260 316, 260 318M, 525129, H05B 700

Patent

active

042724643

ABSTRACT:
A method for preventing bleeding of plasticizers on the surface of shaped articles of plasticized polyvinyl chloride resins. The method comprises the steps of (a) blending a urethane elastomer with the polyvinyl chloride resin together with the plasticizer and other optional additives prior to fabrication of the polyvinyl chloride resin composition into shaped articles, (b) fabricating the resin composition into desired shaped articles, and (c) subjecting the thus shaped article to a treatment with low temperature plasma of a gas. Carbon monoxide is preferred as the gas for the plasma atmosphere.

REFERENCES:
patent: 3257261 (1966-06-01), Hochberg
patent: 3846521 (1974-11-01), Osterholtz
patent: 4046843 (1977-09-01), Sano

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