Polymerization products of di-acetylene-terminated polyimide der

Details Polymerization products of di-acetylene-terminated polyimide der Polymerization products of di-acetylene-terminated polyimide der

1982-03-02

1983-03-22

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525279, 546 66, 548451, 548406, 548415, 548462, 548461, 548426, 548423, 548431, 548433, 548521, 548454, C07D20934, C07D47100, C08F 2240

Patent

active

043776736

ABSTRACT:
Novel, unsaturated diacteylene-terminated polyimides and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides from which they can be prepared by amidation to provide new unsaturated amide groups having a terminal group containing the structure --C.tbd.C--C.tbd.C--, hereinafter sometimes referred to as "conjugated diynes". These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation, thereby extending greatly the applications for which the aromatic polyimides can be employed. Moreover, these new polyimides can undergo the Diels-Alder type of addition with a large number of dienophiles. Certain monomeric materials are also described.

REFERENCES:
patent: 3929713 (1975-12-01), D'Alelio
patent: 4251417 (1981-02-01), Chow et al.
patent: 4255313 (1981-03-01), Antonoplos et al.

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