2,2'-dimethyl-4,4'-bis (4-aminophenoxy) biphenyl, and polymers p

Details 2,2'-dimethyl-4,4'-bis (4-aminophenoxy) biphenyl, and polymers p 2,2'-dimethyl-4,4'-bis (4-aminophenoxy) biphenyl, and polymers p

1997-05-14

1998-12-01

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528170, 528172, 528173, 528176, 528183, 528185, 528188, 528220, 528229, 528310, 528322, 528332, 528350, 528352, C08G 7310, C08G 6926

Patent

active

058440658

ABSTRACT:
A new diamine, 2,2'-dimethyl-4,4'-bis(4-aminophenoxy)-biphenyl was synthesized and used to prepare high performance engineering plastics by polycondensation. The new diamine as shown in the following formula has a noncoplanar 2,2'-disubstituted biphenylene and a flexible aryl units: ##STR1## The engineering plastics disclosed in the present invention includes polyamides, polyimides and poly(amide-imide)s.

REFERENCES:
patent: 4996293 (1991-02-01), Tsuyoshi
patent: 5268487 (1993-12-01), Yang et al.
patent: 5414070 (1995-05-01), Yang et al.

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