Thermosetting resin from amine terminated amic acid and bis-male

Details Thermosetting resin from amine terminated amic acid and bis-male Thermosetting resin from amine terminated amic acid and bis-male

1988-08-19

1989-11-28

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

524413, 524592, 524600, 524606, 525421, 525436, 528170, 528172, 528173, 528184, 528208, 528220, 528229, 528321, 528352, 528353, C08G 6914, C08G 6926, C08G 7310

Patent

active

048838586

ABSTRACT:
A premix, an origomeric prepolymer obtainable from a limited addition polymerization effected with the premix and a thermosetting resin obtainable from such premix or prepolymer as well as fiber reinforced plastics made of such thermosetting resin which are excellent in the heat resistance, impact resistance and flexibility and exhibit a high toughness, wherein said premix comprises, as a first essential component, an amine-terminated amic acid expressed by the formula, ##STR1## in which R.sup.1 stands for a tetravalent aromatic residue having 6 to 20 carbon atoms and R.sup.2 denotes a divalent organic residue having 2 to 20 carbon atoms, said amic acid being produced by reacting a tetracarboxylic dianhydride with a diamine compound, and, as a second essential component, an N,N'-bis maleimide of the formula, ##STR2## wherein R.sup.3 denotes a divalent organic residue having 2 to 20 carbon atoms, the mole ratio of [N,N'-bismaleimide]/[amine-terminated amic acid] being in the range from 1 to 3.

REFERENCES:
patent: 4560742 (1985-12-01), Pater
patent: 4600770 (1986-07-01), Gagliani et al.

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