发明名称 |
Polyester with excellent thermostability and manufacturing method therefor |
摘要 |
A polyester has excellent thermostability with only a small reduction in intrinsic viscosity during melt molding. The polyester is obtained from a dicarboxylic acid, and/or an ester-forming derivative thereof, and an ethylene glycol, a catalyst selected from the group consisting of a titanium compound, aluminum compound and antimony compound, a phosphorous compound selected from the group consisting of phosphoric acid, trimethyl phosphate, ethyl diethylphosphonoacetate, 3,9-bis(2,6-di-t-butyl-4-methylphenoxy) -2,4,8, 10-tetraoxa-3,9-diphosphaspiro[5,5]undecane and tetrakis(2,4-di-t-butyl-5-methylphenyl) [1,1-biphenyl]-4,4′-diylbisphosphonite, wherein the polyester contains 15 to 203 ppm of a sum of copolymerized 1,2-propanediol and/or uncopolymerized 1,2-propanediol wherein ethylene glycol is obtained from biomass and has content of 1,2-propanediol of 45 to 1000 ppm. |
申请公布号 |
US9175133(B2) |
申请公布日期 |
2015.11.03 |
申请号 |
US201214114937 |
申请日期 |
2012.08.24 |
申请人 |
Toray Industries, Inc. |
发明人 |
Okubo Takuro;Tanaka Youichiro;Morimoto Kunihiro |
分类号 |
C08G63/183;C08G63/00;C08G63/672;C08G63/688;C07C29/76;C07C29/80 |
主分类号 |
C08G63/183 |
代理机构 |
DLA Piper LLP (US) |
代理人 |
DLA Piper LLP (US) |
主权项 |
1. A polyester obtained from a dicarboxylic acid and/or an ester-forming derivative thereof, and an ethylene glycol, a catalyst selected from the group consisting of a titanium compound, aluminum compound and antimony compound, a phosphorous compound selected from the group consisting of phosphoric acid, trimethyl phosphate, ethyl diethylphosphonoacetate, 3,9-bis(2,6-di-t-butyl-4-methylphenoxy) -2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane and tetrakis(2,4-di-t-butyl-5-methylphenyl) [1,1-biphenyl]-4,4′-diylbisphosphonite, wherein the polyester contains 15 to 203 ppm of a sum of copolymerized 1,2-propanediol and/or uncopolymerized 1,2-propanediol, and wherein a thermostability index (ΔIV) of the polyester is 0.051 to 0.069 dl/g. |
地址 |
JP |