Flame-retardant resin composition and molded article for electri

Details Flame-retardant resin composition and molded article for electri Flame-retardant resin composition and molded article for electri

1990-10-02

1993-06-22

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524281, 524436, C08K 515, C08K 513

Patent

active

052217043

ABSTRACT:
A flame-retardant resin composition comprising (A) polybutylene terephthalate, a copolymer comprising at least 60.0% by weight of butylene terephthalate units and/or a thermoplastic polyester blend comprising at least 60.0% by weight of polybutylene terephthalate, (B) a brominated epoxy resin type flame retardant and/or a brominated polycarbonate type flame retardant, (C) a flame retardant assistant composed mainly of antimony trioxide and/or antimony pentoxide, (D) a hydrous basic carbonate compound of magnesium and aluminum, and (E) optionally an inorganic filler.
This resin composition has an excellent flame retardancy, balanced performances, and an improved molding processability (flowability, molding cycle, mold-staining resistance and the like), and a staining of metals or a formation of decomposition products and volatile substances is controlled when the composition is used for molding electrical parts.

REFERENCES:
patent: 4102853 (1978-07-01), Kawamura et al.
patent: 4361623 (1982-11-01), Newkirk et al.
patent: 4362658 (1982-12-01), Contin
patent: 4562216 (1985-12-01), Kishida et al.
patent: 4729854 (1988-03-01), Miyata et al.
patent: 4741865 (1988-05-01), Kintz et al.

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