Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1987-07-09
1989-06-06
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
524233, 524366, 524378, 524600, 524607, 528125, 528126, 528128, 528173, 528179, 528182, 528185, 528188, 528220, 528229, 528351, 528352, C08G 7310
Patent
active
048373001
ABSTRACT:
Novel copolyimides are prepared by reacting one or more aromatic dianhydrides with a meta-substituted phenylene diamine and an aromatic bridged diamine. The incorporation of meta-substituted phenylene diamine derived units and bridged aromatic diamine derived units into the linear aromatic polymer backbone results in a copolyimide of improved flexibility, processability, and melt-flow characteristics. The novel copolyimides are especially useful as thermoplastic hot-melt adhesives.
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Burks Harold D.
Progar Donald J.
St. Clair Terry L.
Anderson Harold D.
Glenn Charles E. B.
Helfrich George F.
Manning John R.
The United States of America as represented by the Administratio
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