초록 ▼

Novel, unsaturated polyimide-polyesters and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides, from which they are prepared by esterification to provide unsaturated ester groups of a terminal －CH〓CH2 group. These ne

Novel, unsaturated polyimide-polyesters and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides, from which they are prepared by esterification to provide unsaturated ester groups of a terminal －CH〓CH2 group. 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.

대표청구항 ▼

A polyimide-ester of the formula: [Figure] [Figure] wherein: Ar′is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar′radical except that in the case of t

A polyimide-ester of the formula: [Figure] [Figure] wherein: Ar′is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar′radical except that in the case of the Ar′being a napthalene radical one or both pairs of the carbonyl groups may be attached to peri carbon atoms; Ar is a divalent aromatic organic radical, n is an integer of at least one; R′is an organic moiety containing 2 to 14 carbon atoms and having a terminal CH2〓CH－structure; Y is OR or X; R is H,R′or the residue of an alcohol other than R′OH containing one to 18 carbon atoms; and X is a halide radical.