- 专利标题: POLYESTER COMPOSITIONS WHICH COMPRISE TETRAMETHYLCYCLOBUTANDIOL AND ETHYLENE GLYCOL, WITH IMPROVED CATALYST SYSTEM
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申请号: US16326292申请日: 2017-08-17
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公开(公告)号: US20200165379A1公开(公告)日: 2020-05-28
- 发明人: Emmett Dudley Crawford , James Thomas Goetz , Michael Keith Coggins , Douglas Weldon Carico, JR.
- 申请人: Eastman Chemical Company
- 申请人地址: US TN Kingsport
- 专利权人: Eastman Chemical Company
- 当前专利权人: Eastman Chemical Company
- 当前专利权人地址: US TN Kingsport
- 国际申请: PCT/US2017/047367 WO 20170817
- 主分类号: C08G63/183
- IPC分类号: C08G63/183 ; C08G63/199 ; C08G63/85
摘要:
Described as one aspect of the invention are polyester compositions comprising at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 90 to about 100 mole % of terephthalic acid residues; (ii) about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprising: (i) about 30 to about 42 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) about 58 to about 70 mole % ethylene glycol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; wherein the inherent viscosity of the polyester is from 0.50 to 0.70 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.; and wherein the L* color values for the polyester is 90 or greater. The polyesters may be manufactured into articles.
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