Molding composition suitable for forming improved flame retardan

Details Molding composition suitable for forming improved flame retardan Molding composition suitable for forming improved flame retardan

1974-02-13

1977-05-17

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4575B, 260860, C08L 6702

Patent

active

040241025

ABSTRACT:
An improved flame retardant molding composition of polypropylene terephthalate or polybutylene terephthalate is provided. The composition includes in intimate admixture with the non-halogenated polypropylene terephthalate or polybutylene terephthalate an oxide of antimony, a reinforcing agent (e.g. a glass fiber reinforcing agent), and a polyalkylene-2,5-dibromoterephthalate. Unlike the flame retardant molding compositions of the prior art, the components of the same tend to be non-exuding during utilization of the resulting three-dimensional shaped article at elevated temperatures (e.g. after 66 hours at 175.degree. C.) and thereby render the same suitable for attractive utilization in an even wider range of applications.

REFERENCES:
patent: 3265762 (1966-08-01), Quisenberry
patent: 3409704 (1968-11-01), Bailey
patent: 3642724 (1972-02-01), Schmidt et al.
patent: 3671487 (1972-06-01), Abolins
patent: 3748303 (1973-07-01), Becker et al.
patent: 3794617 (1974-02-01), Mains et al.
patent: 3814725 (1974-06-01), Zimmerman et al.
patent: 3833685 (1974-09-01), Wambach
patent: 3839140 (1974-10-01), Tyler
patent: 3855277 (1974-12-01), Fox
patent: 3883611 (1975-05-01), Nelson
Encyclopedia of Polymer Science and Technology, 1967, vol. 7, p. 15 of "Fire Retardancy".

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