Soluble polyesterimide
AssigneeIndustrial Technology Research Institute
InventorsChien-Hui Li, Tzong-Ming Lee, Jyh-Chien Chen
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Abstract
Disclosed is a polyester-imide prepared from a condensation polymerization of aromatic diacid, diimide diacid, and diol, having a carboxy to hydroxy equivalent molar ratio of 0.9:1 to 1.1:1. The disclosed polyester-imide has outstanding heat-resistance, remarkable filming ability, and high solubility in both phenol series and amide series solvents.
Claims8
An amide and phenol series solvents soluble polyester-imide, having a carboxy to hydroxy equivalent molar ratio of 0.9:1 to 1.1:1 produced from:
- (a) aromatic diacid selected from the group consisting of
- (a.sub.1) terephthalic acid(TPA),
- (a.sub.2) isophthalic acid(IPA), and
- mixture thereof, and having a ratio of TPA:EPA of 1:0 to 0:1 and comprising 0-49 molar percent of the total ingredients;
- (b) an imide diacid selected from the group consisting of
- (b.sub.1) a diimide diacid having the formula as follows:
- ##STR4## wherein x is selected from the group consisting of O, S, SO.sub.2, CO, and CH.sub.2,
- (b.sub.2) a monoimide having the formula as follows:
- ##STR5## and (b.sub.3) a monoimide having the formula as follows:
- ##STR6## and mixtures thereof, and comprising 1-50 molar percent of the total ingredients;
- and
- (c) aryl diol selected from the group consisting of
- (c.sub.1) having the formula as follows:
- ##STR7## wherein Y is selected from the group consisting of C(CH.sub.3).sub.2, SO.sub.2, and S, and
- (c.sub.2) a mixture of hydroquinone(HQ) and resorcinol(RC) with a mixing molar ratio of 1:0 to 1:1,
- and comprising 50 molar percent of the total ingredients.
An amide and phenol series solvents soluble polyester-imide, having a carboxy to hydroxy equivalent molar ratio of 0.9:1 to 1.1:1 produced from and consisting of:
- (a) aromatic diacid selected from the group consisting of
- (a.sub.1) terephthalic acid(TPA),
- (a.sub.2) isophthalic acid(IPA), and mixture thereof, and having a ratio of TPA:IPA of 1:0 to 0:1 and comprising 0-49 molar percent of the total ingredients;
- (b) an imide diacid selected from the group consisting of
- (b.sub.1) a diimide diacid having the formula as follows:
- ##STR8## wherein x is selected from the group consisting of O, S, SO.sub.2, CO, and CH.sub.2,
- (b.sub.2) a monoimide having the formula as follows:
- ##STR9## and (b.sub.3) a monoimide having the formula as follows:
- ##STR10## and mixtures thereof, and comprising 1-50 molar percent of the total ingredients;
- and
- (c) aryl diol selected from the group consisting of
- (c.sub.1) having the formula as follows:
- ##STR11## wherein Y is selected from the group consisting of C(CH.sub.3).sub.2, SO.sub.2, and S, and
- (c.sub.2) a mixture of hydroquinone(HQ) and resorcinol(RC) with a mixing molar ratio of 1:0 to 1:1,
- and comprising 50 molar percent of the total ingredients.
Dependencies are inferred from the claim text.