Low density styrene polymer foams and process for preparing same

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521 79, 521 88, 521 97, 521146, C08J 908, C08J 912, C08J 914

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active

052740056

ABSTRACT:
Low density styrene polymer foams having highly desirable physical properties are prepared employing as a blowing agent a mixture of carbon dioxide, lower alcohol and water. The cell size can be effectively controlled by controlling the amount of water in the blowing agent mixture, i.e., small cell or large cell foams can be prepared. A process for preparing such foams is also disclosed.

REFERENCES:
patent: 4344710 (1982-08-01), Johnson et al.
patent: 4424287 (1984-01-01), Johnson et al.
patent: 4464484 (1984-08-01), Yoshimura et al.
patent: 4980388 (1990-12-01), Herrington et al.

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