Expandible particles of styrene polymers and process for prepari

Details Expandible particles of styrene polymers and process for prepari Expandible particles of styrene polymers and process for prepari

1978-06-28

1979-10-30

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 58, 521907, C08J 914

Patent

active

041729285

ABSTRACT:
Expandible particles of styrene particles for producing molded bodies, particularly large blocks having a homogeneous fine-cell structure, and having improved characteristics, are obtained by polymerizing styrene or a mixture of styrene and one or more different monomers copolymerizable with styrene, in the presence of at least one compound of the following general formulae (I) or (II) ##STR1## wherein R.sub.1 and R.sub.4, either like or unlike each other, are an optionally halogen-substituted alkyl radical containing 1 to 30 carbon atoms;

REFERENCES:
patent: 3162613 (1964-12-01), Tousignant
patent: 3207731 (1965-09-01), Tousignant
patent: 3210326 (1965-10-01), Tousignant et al.
patent: 3271333 (1966-09-01), Eichhorn

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