Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1986-07-03
1989-04-18
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
4284111, 4284735, 428500, 526262, 528170, 528228, 528246, C08G 6926
Patent
active
048228702
ABSTRACT:
Polyimide addition copolymers of improved physical properties and thermal stability are prepared by reacting ethylenically unsaturated bis-imides with compounds having two methylene groups activated by adjacent carbonyl groups. The copolymers may be made in the presence of catalytic amounts of amines or with greater amounts of polyamines. The polymers are useful in producing molding powders, prepregs, laminates, circuit boards, encapsulants and metal clad shapes.
REFERENCES:
patent: 4275185 (1981-06-01), Lu
Anderson Harold D.
Creative Assets and Consulting Corporation
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