Expandable polymers in particle form

Details Expandable polymers in particle form Expandable polymers in particle form

1989-05-19

1990-05-22

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 58, 521 60, 521139, 521910, C08J 918

Patent

active

049278592

ABSTRACT:
Expandable polymers in particle form for the preparation of foams having high heat distortion resistance contain from 20 to 94.9% by weight of a styrene polymer, from 0.1 to 75% by weight of a polyphenylene ether and from 5 to 20% by weight of a blowing agent mixture of aliphatic or cycloaliphatic hydrocarbons on the one hand and aromatic hydrocarbons, alcohols, ketones, ethers, esters and/or chlorohydrocarbons on the other hand.

REFERENCES:
patent: 4274637 (1981-06-01), Molitor
patent: 4705811 (1987-11-01), Park
patent: 4727093 (1988-02-01), Allen et al.
patent: 4728674 (1988-03-01), Wroczynski
patent: 4734441 (1988-03-01), Park
patent: 4857390 (1989-08-01), Allen et al.

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