Method of producing imide bond-containing resins

Details Method of producing imide bond-containing resins Method of producing imide bond-containing resins

1990-05-21

1992-02-04

Lipman, Bernard

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525127, 5253276, 525382, 525386, C08F 830

Patent

active

050861140

ABSTRACT:
The invention relates to a method of producing imide bond-containing resins. The method comprises reacting a halogenated phthalic anhydride, a specific copolymer and a diisocyanate compound in an inert solvent in the presence of a quaternary phosphonium compound as a catalyst to give an imide bond-containing resin in high yield. The imide bond-containing resins provide flammable substances with good fire or flame resistance and at the same time themselves have good heat resistance and weather resistance. Therefore, the resins can be used as flame retardants in a broad range of application.

REFERENCES:
patent: 3558743 (1971-01-01), Verdo et al.
patent: 3642943 (1972-02-01), Noel
patent: 4139689 (1979-02-01), Hochreuter et al.
patent: 4144063 (1979-03-01), Haas

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