Production of foam boards of high compressive strength using a blowing agent mixture

Foam boards of high compressive strength are produced by extruding a mixture of a styrene polymer and from 5 to 16% by weight of a blowing agent which contains a) from 3 to 70% by weight of an alcohol or ketone having a boiling point of from 56 DEG to 100 DEG C., b) from 0 to 50% by weight of carbon...

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Bibliographic Details
Main Authors VOELKER; HEINZ, ALICKE; GERHARD, WEILBACHER; MANFRED, WEBER; REINHOLD, SCHUCH; HORST
Format Patent
LanguageEnglish
Published 02.08.1994
Edition5
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:Foam boards of high compressive strength are produced by extruding a mixture of a styrene polymer and from 5 to 16% by weight of a blowing agent which contains a) from 3 to 70% by weight of an alcohol or ketone having a boiling point of from 56 DEG to 100 DEG C., b) from 0 to 50% by weight of carbon dioxide, c) from 0 to 88% by weight of a saturated C3- to C5-hydrocarbon, d) from 2 to 90% by weight of at least one fluorinated hydrocarbon which has a boiling point of from -30 DEG to +30 DEG C.
Bibliography:Application Number: US19920975729