Expandable polyolefin compositions and polyolefin foam preparati

Details Expandable polyolefin compositions and polyolefin foam preparati Expandable polyolefin compositions and polyolefin foam preparati

1980-05-29

1982-08-31

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 94, 521 95, 521 97, 521 98, 521134, 521910, 264DIG5, C08J 914

Patent

active

043473296

ABSTRACT:
The use, in an otherwise conventional polyolefin extrusion foaming process, of a stability control agent (e.g., stearamide, EAA copolymer, etc.) in conjunction with certain mixed blowing agent systems (e.g., 5-50 weight percent trichloromonofluoromethane and 50-95 weight percent dichlorodifluoromethane) provides closed-cell olefin polymer foam articles having increased maximum achievable cross-sections and good dimensional stability.

REFERENCES:
patent: 3644230 (1972-02-01), Cronin
patent: 3657165 (1972-04-01), Kawai et al.
patent: 3766099 (1973-10-01), Kawai et al.
patent: 4102829 (1978-07-01), Watanabe et al.
patent: 4110269 (1978-08-01), Ehrenfreund
patent: 4129530 (1978-12-01), Park et al.
patent: 4214054 (1980-07-01), Watanabe et al.
patent: 4229396 (1980-10-01), Suh

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