Copolyetherimides with resistance to high temperatures

Details Copolyetherimides with resistance to high temperatures Copolyetherimides with resistance to high temperatures

1998-11-06

2000-02-01

Woodward, Ana

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

Synthetic resins

From carboxylic acid or derivative thereof

525436, 528350, C08G 1830, C08L 7908

Patent

active

060204567

ABSTRACT:
Copolyetherimides are prepared by conventional means from hindered diamines such as the isomeric methyl-4,6-diethyl-1,3-phenylenediamines and bis(2-chloro-4-amino-3,5-diethylphenyl)methane. They have unusually high glass transition temperatures.

REFERENCES:
patent: 4550156 (1985-10-01), Gallagher
patent: 4680373 (1987-07-01), Gallagher et al.
patent: 5189115 (1993-02-01), Melquist
patent: 5608013 (1997-03-01), Matsuura et al.
Ulery et al., "Highly Soluble Polyimides From Sterically Hindered Diamines," Polym. Prep., , 38, 182-3 (1997).

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