Process for producing flame resistant polyester

Details Process for producing flame resistant polyester Process for producing flame resistant polyester

1989-11-20

1990-07-10

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528286, 528287, 528296, 528303, 5283081, 528398, 524116, 524117, 524129, 524136, 524139, 524147, 524603, 524706, 523506, C08G 6302

Patent

active

049407724

ABSTRACT:
A polyester, wherein pendent phosphorus atoms are bound to the main chain of the polyester, having an excellent flame resistance and a high intrinsic viscosity can be stably produced without deteriorating the properties of said polyester by preliminarily copolymerizing a polyester with a specific unsaturated compound and then reacting the unsaturated bond thus-formed with a specific phosphorus compound having a P-H bond.

REFERENCES:
patent: 4157436 (1979-06-01), Endo et al.
patent: 4280991 (1981-07-01), Saito et al.
patent: 4339376 (1982-07-01), Kasahara et al.

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