Preparation of styrene polymer foam particles

Details Preparation of styrene polymer foam particles Preparation of styrene polymer foam particles

1989-11-17

1991-02-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 25, 521 56, 521 58, 521 59, 521915, C08J 912

Patent

active

049905392

ABSTRACT:
Styrene polymer foam particles of from 10 to 30 kg/m.sup.3 in density are obtained by foaming styrene polymers which, per kg, contain from 0.7 to 3 moles of blowing agent mixture composed of from 60 to 90 mol % of water and from 10 to 40 mol % of the C.sub.4 - or C.sub.5 -hydrocarbon with the aid of microwaves.

REFERENCES:
patent: 3253064 (1966-05-01), Buonaiuto
patent: 4035216 (1977-07-01), Immel
patent: 4173608 (1979-11-01), Soulier
patent: 4193499 (1980-03-01), Lookholder
patent: 4351884 (1982-09-01), Robertson
patent: 4740530 (1988-04-01), Pip
patent: 4765934 (1988-08-01), Nazar et al.

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