Stock material or miscellaneous articles – Composite – Of polyimide
Patent
1980-12-17
1985-04-02
Page, Thurman K.
Stock material or miscellaneous articles
Composite
Of polyimide
4273855, 4273935, 427399, 427400, B32B 902, B05D 302
Patent
active
045087873
ABSTRACT:
A protective coating which is resistant to attack by basic solutions is formed from interpolymers containing maleic anhydride (MAH). An article is coated with a solution of the dissolved ammonium or amine salts of the MAH interpolymer, or if the article itself contains MAH the salts may alternatively be formed on the surface of the article by applying a basic solution containing the ammonium or amine ions. The article is then dried and heated at a temperature sufficient to form the cyclic imide structure from the ammonium or amine salt of the MAH, typically about 160 to 200.degree. C.
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patent: 3669718 (1972-06-01), Chiu et al.
patent: 4168359 (1979-09-01), Gaylord
patent: 4200720 (1980-04-01), Evani et al.
patent: 4255471 (1981-03-01), Boldebuck et al.
Giffen, Jr. William M.
Li George S.
Miller Arthur F.
Evans Larry W.
Heidrich William A.
Knudsen Herbert D.
Page Thurman K.
The Standard Oil Company
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