Polyimide precursor solution, process for producing the solution

Details Polyimide precursor solution, process for producing the solution Polyimide precursor solution, process for producing the solution

1994-03-25

1995-11-14

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524323, 524324, 524379, 524606, 356378, C08J 311, C08K 515

Patent

active

054667321

ABSTRACT:
A polyimide precursor solution which comprises a polyimide precursor and a solvent wherein the polyimide precursor and the solvent are not solated strongly. A process for the production of the polyimide precursor solution, as well as moldings and coatings obtained from the solution.
The polyimide precursor solution of the present invention has excellent storage stability, and the solvent can be removed easily at the time of the production of moldings or coatings. According to the process of the present invention, the polyimide precursor solution can be produced easily using simple apparatus and an inexpensive solvent(s) having low toxicity. The polyimide molding obtained from the polyimide precursor solution has excellent uniformity and no residual solvent. The polyimide coating obtained from the polyimide precursor solution has excellent uniformity, no residual solvent and excellent adhesiveness to a base material.

REFERENCES:
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patent: 4535115 (1985-08-01), Bakshi et al.
patent: 4546115 (1985-10-01), Gagiliani et al.
patent: 4568715 (1986-02-01), Itatani et al.
patent: 4720539 (1988-01-01), Rabilloud et al.
patent: 4923954 (1990-05-01), Klobucar et al.
Patent Abstracts of Japan, Abstract of JP-A-61-241357.

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