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US 6,207,739 B1Granted
Polyamide acid composition containing metal, polyimide film, flexible printed wiring board and method for producing them
AssigneeKanegafuchi Kagaku Kogyo Kabushiki
InventorsKuzuhiro Ono, Masaru Nishinaka, Kiyokazu Akahori
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Abstract
The object of the present invention is to provide a polyimide film, a flexible printed wiring board consisting thereof, and a polyimide molding, wherein various metal compounds are added to improve their properties and to provide them with noble properties.
Claims28
A polyamide acid composition containing
- an organic solvent,
- a polyamide acid which is a precursor to a non-thermosetting polyimide which is a reaction product of at least one aromatic acid dianhydride and at least one diamine;
- at least one inorganic or organic metallic compound, and
- at least one inhibitor for gelation.
1 more element
A polyamide acid composition containing
- an organic solvent
- a polyamide acid which is a precursor to a non-thermosetting polyimide which is a reaction product of at least one aromatic acid dianhydride and at least one diamine;
- at least one dehydrating agent;
- at least one catalyst;
- at least one inorganic or organic metallic compound;
- and
- at least one inhibitor for gelation.
4 more elements
A polyamide acid composition comprising:
- an organic solvent;
- a reaction product of at least one aromatic acid dianhydride and at least one diamine,
- at least one inorganic or organic metallic compound, and
- at least one inhibitor for gelation selected from the group consisting of compounds represented by the formulas:
- wherein R1, R3, R4, R7 and R9 each represent the same or different aliphatic group or aromatic group containing 1 to 12 carbon atoms,
- R2, R5, R8, and R10 each represent an aliphatic group or aromatic group containing a hydrogen atom or 1 to 12 carbon atoms, and
- R1, and R2, R4 and R6, R7 and R9 may be combined together to form a ring.
4 more elements
An imidizable polyamide acid composition obtainable by
- blending at least one aromatic acid dianhydride and at least one diamine in an organic solvent,
- adding at least one inorganic or organic metallic compound, and
- adding at least one inhibitor for gelation.
Dependencies are inferred from the claim text.