Particulate expandable styrene polymers for the manufacture of f

Details Particulate expandable styrene polymers for the manufacture of f Particulate expandable styrene polymers for the manufacture of f

1975-10-02

1978-04-25

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25FP, 260DIG24, 260 457R, C08J 920, C08J 922

Patent

active

040861910

ABSTRACT:
Particulate expandable styrene polymers which contain from 0.0001 to 0.2% by weight, based on the styrene polymer, of an inhomogeneously distributed nucleating agent for expandable polystyrene, the nucleating agent being present only in a peripheral zone of the particles while the interior of the particles is free from nucleating agent. Nucleating agents which may be used are organic compounds having at least three bromine atoms, bonded to aliphatic or cycloaliphatic structures, in the molecule, or bromine compounds which are polymerizable, or are copolymerizable with styrene.

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patent: 3923706 (1975-12-01), Aebelhart et al.

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