EP0411136A1
Expired / Lapsed
EP
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Polyester copolymer
Assignee: Mitsubishi Chemical Corp
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Filing: 1989-12-28
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Granted: —
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Expires: 2009-12-28
Abstract
Abstract The title copolymer is obtained by reacting a dicarboxylic acid component mainly composed of terephthalic acid or its derivative with a glycol component composed of 15 to 85 mol % of an aliphatic diol having 2 to 16 carbon atoms and 85 to 15 mol % of 1,4-cyclohexanedimethanol at least 80 mol % of which is in the trans form. This polyester copolymer has a low crystallization rate and an excellent heat resistance.
Inventors
- 👤 Hiroshi Mitsubishi Rayon Co. Ltd. Mori
- 👤 Naoki Mitsubishi Rayon Co. Ltd. Yamamoto
- 👤 Hitoshi Mitsubishi Rayon Co. Ltd. Iwasaki
- 👤 Noriyuki Mitsubishi Rayon Co. Ltd. Taziri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 18:11
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
187 words
A polyester copolymer obtained by reacting (A) a dicarboxylic acid component composed mainly of terephthalic acid or a derivative thereof with (B) a glycol component comprising (B-1) 15 to 85 mole% of an aliphatic diol having 2 to 16 carbon atoms and (B-2) 85 to 15 mole% of 1,4-cyclohexanedimethanol in which the transform content is at least 80 mole%. A polyester copolymer as set forth in claim 1, wherein the derivative of terephthalic acid is a dialkyl ester of terephthalic acid having 1 to 10 carbon atoms in the alkyl group or a diaryl ester of terephthalic acid having 6 to 14 carbon atoms in the aryl group. A polyester copolymer as set forth in claim 1, wherein the glycol component (B) comprises 30 to 70 mole% of the aliphatic diol (B-1) and 70 to 30 mole% of 1,4-cyclohexanedimethanol (B-2). A polyester copolymer as set forth in claim 1, wherein the aliphatic diol is ethylene glycol. A polyester copolymer as set forth in claim 1, wherein the aliphatic diol is at least one member selected from the group consisting of propylene glycol, tetramethylene glycol and hexamethylene glycol.
References Cited (Backward Citations)
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