High-transparent and heat-resistant polyesterimide
AssigneeIndustrial Technology Research Institute
InventorChien-Hui Li
Life of this patent
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Abstract
A heat-resistant and high-transparence polyesterimide composition is disclosed which is prepared from the reaction of: (a) an imidihydroxycarboxylic acid represented by the following formula: ##STR1## (b) at least one dicarboxylic, such as terephthalic acid or isophthalic acid, or mixture thereof, and (c) at least one dihydroxy compound represented by the following formula: ##STR2## Wherein Y can be --C(CH.sub.3).sub.2 --, --SO.sub.2 --, --CH(CH.sub.3)--, --(CH.sub.2).sub.m --, where m in an integer of 1 to 10, --O--, or --S--; X can be H, Cl, or Br; and n is an integer of 0 to 4. The polyesterimide resins disclosed in this invention also exhibit improved fabricability due to their improved solubility in organic solvents, and improved mechanical strength.
Claims13
A heat-resistant and transparent polyesterimide prepared from a reaction mixture consisting essentially of:
- (a) imidihydroxycarboxylic acid represented by the following formula:
- ##STR8## (b) at least one dicarboxylic acid;
- and (c) at least one dihydroxy compound represented by the following formula:
- ##STR9## wherein Y is selected from the group consisting of --C(CH.sub.3).sub.2 --, --SO.sub.2 --, --CH(CH.sub.3)--, --(CH.sub.2).sub.m --, wherein m is an integer of 1 to 10, --O--, and --S--;
- X is selected from the group consisting of H, Cl, and Br;
- and n is an integer of 0 to 4.
A method for making a heat-resistant and transparent polyesterimide comprising the steps of:
- (a) preparing a reaction mixture consisting essentially of the following three monomers:
- (i) imidihydroxycarboxylic acid represented by the following formula:
- ##STR10## (ii) at least one dicarboxylic acid;
- and (iii) at least one dihydroxy compound represented by the following formula:
- ##STR11## wherein Y is selected from the group consisting of --C(CH.sub.3).sub.2 --, --SO.sub.2 --, CH(CH.sub.3)--, --(CH.sub.2).sub.m -- wherein m is an integer of 1 to 10, --O--, and --S--;
- X is selected from the group consisting of H, Cl, and Br;
- and n is an integer of 0 to 4;
- (iv) an appropriate organic solvent;
- (b) stirring the reaction mixture prepared from step (a) at a predetermined set of temperatures;
- (c) pouring the reaction mixture from step (c) into water to cause precipitation of a solid product from the reaction mixture;
- and
- (d) filtering said solid product from said reaction mixture.
Dependencies are inferred from the claim text.