METHOD FOR PRODUCING EXPANDABLE STYRENE POLYMERS CONTAINING PARTICULATE ADDITIVES

a) Production of prepolymer beads through a first suspension polymerization reaction using an aqueous suspension comprising styrene monomers and comprising particulate additives, b) isolation of the prepolymer beads, c) optional division of the prepolymer beads into fractions of different particle s...

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Main Authors HESSE PASCAL, OSTERMANN RAINER, HAVERKEMPER GREGOR, LEHNEN UWE-JOHANNES, SCHMIED BERNHARD, BRAUN FRANK, HAHN KLAUS, HOLOCH JAN, SPIES PATRICK, SEDA LIBOR
Format Patent
LanguageEnglish
Published 01.01.2015
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:a) Production of prepolymer beads through a first suspension polymerization reaction using an aqueous suspension comprising styrene monomers and comprising particulate additives, b) isolation of the prepolymer beads, c) optional division of the prepolymer beads into fractions of different particle size and selection of one or more fractions for subsequent stages, d) production of an aqueous suspension of the prepolymer beads and conduct of a second suspension polymerization reaction in the presence of blowing agent and with addition of further monomers.
Bibliography:Application Number: US201214367246