Polyvinyl chloride lubricant

Details Polyvinyl chloride lubricant Polyvinyl chloride lubricant

1988-01-15

1991-12-31

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524567, 524569, C08K 510

Patent

active

050773313

ABSTRACT:
Propylene glycol esters of unsaturated fatty acids having from 8 to 20 carbon atoms are found useful as internal lubricants for polyvinyl chloride. As compared to commonly used materials, the use of propylene glycol ester results in improved optical properties, as for example low yellowing after processing and resistance to hazing upon immersion in liquids. The lubricants are used in the manufacture of PVC by bulk or suspension polymerization. Broadly from 0.1 to 5 wt. % of the ester is incorporated into the resin.

REFERENCES:
patent: 2316169 (1943-04-01), Japs
patent: 3917555 (1975-11-01), Worschech
patent: 4363891 (1982-12-01), Rosen
patent: 4421886 (1983-12-01), Worschech

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