Anti-lumping styrene polymer particles for molding foams

Details Anti-lumping styrene polymer particles for molding foams Anti-lumping styrene polymer particles for molding foams

1986-01-13

1986-09-02

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 60, 521 85, 521146, C08J 922

Patent

active

046096817

ABSTRACT:
Expandable styrene polymer particles which have anti-stratification and anti-lumping properties during expansion are produced by dry blending styrene polymer particles in the presence of 0.01-0.04 parts of alkyl and alkylaryl ethers of polyethoxyethanol mono- and diesters of phosphoric acid per 100 parts of polymer particles. The esters may be added as sole anti-stratification or anti-lumping agent or in addition to known anti-lumping agents.

REFERENCES:
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patent: 3236681 (1966-02-01), Nemphos et al.
patent: 3520833 (1970-07-01), Wright
patent: 3553112 (1971-01-01), Weinstein et al.
patent: 3826765 (1974-07-01), Altares, Jr.
patent: 3879345 (1975-04-01), Furukawa et al.

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