US5310856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-transparent and heat-resistant polyesterimide
Assignee: Industrial Technology Research Institute
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Filing: 1993-01-11
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Granted: 1994-05-10
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Expires: 2013-01-11
Abstract
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: <IMAGE> (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: <IMAGE> Wherein Y can be -C(CH3)2-, -SO2-, -CH(CH3)-, -(CH2)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.
Inventors
- 👤 Chien-Hui Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:04
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; C09; C09D; C09D179/00; C09D179/04; C09D179/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
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 3 ) 2 --, --SO 2 --, --CH(CH 3 )--, --(CH 2 ) 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.
Claim 2
Dependent Claim
99 words
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 3 ) 2 --, --SO 2 --, --CH(CH 3 )--, --(CH 2 ) 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.
Claim 3
Dependent Claim
53 words
The heat-resistant and transparent polyesterimide composition of claim 1 which is characterized by having a thermal decomposition temperature of at least 440° F., a light transparence of at least 50% when measured at a wavelength of 400 nm and a thickness of 23 μm, and being soluble in N-methyl-2-pyrrolidone, N,N'-dimethylformamide, N,N'-dimethylacetamide, and m-cresol.
Claim 4
Dependent Claim
25 words
The heat-resistant and transparent polyesterimide composition of claim 1 wherein said imidihydroxycarboxylic acid is selected from the group consisting of 4-carboxy-N-(p-hydroxy-phenyl) phthalimide and 4-carboxy-N-(m-hydroxy-phenyl) phthalimide.
Claim 5
Dependent Claim
22 words
The heat-resistant and transparent polyesterimide composition of claim 1 wherein said dicarboxylic acid is terephthalic acid, or isophthalic acid, or mixture thereof.
Claim 6
Dependent Claim
39 words
The heat-resistant and transparent polyesterimide composition of claim 1 wherein said imidihydroxycarboxylic acid is 1 to 90 mol percent of the total reactants, and each of said dicarboxylic acid is 5 to 49.5 mol percent of the total reactants.
Claim 7
Independent Claim
162 words
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 3 ) 2 --, --SO 2 --, CH(CH 3 )--, --(CH 2 ) 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.
Claim 8
Independent Claim
162 words
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 3 ) 2 --, --SO 2 --, CH(CH 3 )--, --(CH 2 ) 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.
Claim 9
Dependent Claim
25 words
The method for making heat-resistant and transparent polyesterimide composition of claim 6 wherein said organic solvent is pyridine, or mixture of pyridine and N,N'-dimethyl acetamide.
Claim 10
Dependent Claim
28 words
The method for making heat-resistant and transparent polyesterimide composition of claim 6 wherein said imidihydroxycarboxylic acid is selected from the group consisting of 4-carboxy-N-(p-hydroxy-phenyl) phthalimide and 4-carboxy-N-(m-hydroxy-phenyl) phthalimide.
Claim 11
Dependent Claim
24 words
The method for making heat-resistant and transparent polyesterimide composition of claim 6 wherein said dicarboxylic acid is terephthalic acid, isophthalic acid, or mixture thereof.
Claim 12
Dependent Claim
42 words
The method for making heat-resistant and transparent polyesterimide composition of claim 6 wherein said imidihydroxycarboxylic acid is 1 to 90 mol percent of the total reactants, and each of said dicarboxylic acid is 5 to 49.5 mol percent of the total reactant.
Claim 13
Dependent Claim
47 words
The method for making heat-resistant and transparent polyesterimide composition of claim 6 which further comprises the step of adding a polycondensation agent into said reaction mixture, wherein said polycondensation being selected from the group consisting of diphenylchlorophosphate, SOCl 2 , Tosyl chloride, lithium chloride, and calcium chloride.
Claim 14
Dependent Claim
17 words
A varnish composition comprising: (a) a polyesterimide resin described in claim 1; and (b) an organic solvent.
Claim 15
Dependent Claim
22 words
The varnish composition of claim 12 wherein said organic solvent is selected from the group consisting of N-methyl-2-pyrrolidone, N,N'-dimethylformamide, N,N'-dimethylacetamide, and m-cresol.
References Cited (Backward Citations)
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