Method for making polyimides and products produced thereby

Details Method for making polyimides and products produced thereby Method for making polyimides and products produced thereby

1986-05-30

1990-07-31

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548521, C07D207404

Patent

active

049451707

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: 3625912 (1971-12-01), Uincent
Mar. Ed., Advanced Organic Chemistry, 2nd Ed., McGraw-Hill (1977), pp. 704-706.
Tawney, et al., J. Org. Chem., vol. 26 (1961), pp. 15-21.

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