Polyimide composite material and film thereof
AssigneeMitsui Chemicals, Inc.
InventorsKenichi Fukukawa, Yoshihiro Sakata, Ichiro Fujio, Wataru Yamashita
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Abstract
A polyamic acid solution includes a polyamic acid, a solvent (C) in which the polyamic acid (PAA1) is dissolved, and a substance (M) that can release at least one metal selected from groups 1 and 2 of the periodic table as a metal ion, or a substance (m) that contains the substance (M). A polyimide composite is produced from the polyamic acid solution. The polyimide composite can provide a greatly improved glass transition temperature without impairing the intrinsic physical properties of the polyimide.
Claims33
A polyamic acid solution (S2) comprising:
- a polyamic acid (PAA1) having the following general formula (1);
- wherein in the formula (1), X denotes a divalent organic group, and Y denotes a tetravalent organic group,
- a solvent (C) in which the polyamic acid (PAA1) is dissolved;
- and
- a substance (M) selected from the group consisting of calcium hydroxide, magnesium hydroxide, and strontium hydroxide, wherein the amount of substance (M) is from 1.4 to 14 equivalents per 100 equivalents of a constitutional repeating unit of the polyamic acid (PAA1) having the formula (1).
A polyamic acid solution (S2) comprising:
- a polyamic acid (PAA1) having the following general formula (1);
- wherein in the formula (1), X denotes a divalent organic group, and Y denotes a tetravalent organic group,
- a solvent (C) in which the polyamic acid (PAA1) is dissolved;
- and
- heat-treated talc (T) that contains a substance selected from the group consisting of calcium oxide and calcium carbonate wherein the heat-treated talc (T) is heat-treated at a temperature in the range of 650° C. to 800° C.
Dependencies are inferred from the claim text.