Flame-retardant foamed particles of polyolefin resin

Details Flame-retardant foamed particles of polyolefin resin Flame-retardant foamed particles of polyolefin resin

1995-05-15

1996-10-29

Hoke, Veronica P.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

524171, 524373, 524412, C08K 506, C08K 541

Patent

active

055696813

ABSTRACT:
Flame-retardant foamed particles of a polyolefin resin, which contain a bis(alkyl ether)tetrabromobisphenol A flame retardant and/or a bis(alkyl ether)tetrabromobisphenol S flame retardant, and a synergist of the flame retardant, are disclosed. The flame retardant has a bromine content of at least 50 wt. %. The alkyl group in the alkyl ether moiety of the flame retardant is any one of ethyl, propyl, bromoethyl and bromopropyl. The synergist of the flame retardant is selected from the group consisting of antimony oxides, metal oxides, boric acid salts and metal hydroxides. An expansion-molded article is obtained by filling the flame-retardant foamed particles into a mold and molding the foamed particles.

REFERENCES:
patent: Re34563 (1994-03-01), Heinz
patent: 3590014 (1971-06-01), Burt
patent: 3883481 (1975-05-01), Kopetz et al.
patent: 4006118 (1977-02-01), Ogawa et al.
patent: 5409980 (1995-04-01), Myszak

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