Polyimide from unsaturated imide, polyamine and aldehyde

Details Polyimide from unsaturated imide, polyamine and aldehyde Polyimide from unsaturated imide, polyamine and aldehyde

1985-01-29

1986-08-26

Anderson, Harold D.

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

Synthetic resins

From aldehyde or derivative thereof as reactant

528127, 528149, 528150, 528248, 528253, 528322, C08G 1206, C08G 1226

Patent

active

046084312

ABSTRACT:
A method for making polyimide polymers is provided by effecting reaction between an aliphatically unsaturated imide, such as maleimide, formaldehyde, and an organic polyamine, for example trimethylene bis(4-aminobenzoate), for example in refluxing ethanol. The polyimides produced by the simple one-step method are pure, and exhibit superior toughness, and reduced shrinkage upon cure by heating. The new product are useful as molding compounds, laminating resins, and the like, being especially suitable for airplane parts, advanced composites, high performance adhesives and printed circuit boards.

REFERENCES:
patent: 3018290 (1962-01-01), Sauers
patent: 3625912 (1971-12-01), Vincent
patent: 3732189 (1973-05-01), Crivello et al.
patent: 3883486 (1975-05-01), Bargain
patent: 4012361 (1977-03-01), Bargain
patent: 4064192 (1977-12-01), Bargain

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