Polyimide-forming compositions, methods of manufacture, and articles prepared therefrom
AssigneeSabic Global Technologies B.V.
InventorViswanathan Kalyanaraman
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Abstract
A polyimide-forming composition includes a particulate polyimide precursor composition having an average particle size of 0.1 to 100 micrometers wherein the polyimide precursor composition comprises a substituted or unsubstituted C4-40 bisanhydride, and a substituted or unsubstituted divalent C1-20 diamine; an aqueous carrier; and a surfactant. A method of manufacturing an article including a polyimide includes the steps of forming a preform comprising the polyimide-forming composition; and heating the preform at a temperature and for a period of time effective to imidize the polyimide precursor composition and form the polyimide. An article prepared by the method, and a layer or coating including a polyimide and a surfactant are also described.
Claims10
A polyimide-forming composition, comprising
- a particulate polyimide precursor composition having a maximum particle size of 100 micrometers or less, wherein the polyimide precursor composition comprises
- a substituted or unsubstituted C4-40 bisanhydride, and
- a substituted or unsubstituted divalent C1-20 diamine;
- an aqueous carrier, wherein the aqueous carrier comprises less than 1 wt % of a chlorobenzene, a dichlorobenzene, cresol, dimethyl acetamide, veratrole, pyridine, nitrobenzene, methyl benzoate, benzonitrile, acetophenone, n-butyl acetate, 2-ethoxyethanol, 2-n-butoxyethanol, dimethyl sulfoxide, anisole, cyclopentanone, gamma-butyrolactone, N,N-dimethyl formamide, N-methyl pyrrolidone, or a combination comprising at least one of the foregoing;
- and
- a surfactant.
Dependencies are inferred from the claim text.