Production of foam boards of high compressive strength

Details Production of foam boards of high compressive strength Production of foam boards of high compressive strength

C - Chemistry, Metallurgy

08

J

C08J 9/12 (2006.01) B29C 47/00 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2082494

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 to 100°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 to +30°C.

Panneaux de mousse possédant une résistance élevée à la compression, produits par extrusion d'un mélange de polymère de styrène et de 5 à 16 % en poids d'un gonflant à base de : a) 3 à 70 % en poids d'un alcool ou d'une cétone avec un point d'ébullition de 56 à 100 degrés C; b) 0 à 50 % en poids de dioxyde de carbone; c) 0 à 88 % en poids d'un composé hydrocarboné saturé de 3 à 5 carbones; d) de 2 à 90 % en poids d'au moins un composé hydrocarboné possédant de -30 +30 degrés C.

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