发明名称 |
Amorphous, high glass transition temperature copolyester compositions, methods of manufacture, and articles thereof |
摘要 |
An amorphous copolyester comprising the reaction product of: (a) a monomer of formula I;
wherein R1, R2, R3, and R5 are each independently hydrogen or a C1-3 alkyl group, a is 0-1, b is 0-4, c is 0-4 and d is 0-3, and each R4 is independently hydrogen or a C1-3 alkyl group; (b) a virgin monomer selected from terephthalic acid, a di(C1-3 alkyl) terephthalate, and combinations thereof, and (c) 1,4-cyclohexane dimethanol;
wherein the residue of monomer (a) is present in an amount from 7 to less than 12 mole % of the copolyester based on moles of repeat units in the polyester; and the copolyester has a glass transition temperature of at least 107° C., an intrinsic viscosity of at least 0.7 dl/g, and a molded sample has a Notched Izod value of at least 290 J/m determined in accordance with ASTM D256. |
申请公布号 |
US8969506(B2) |
申请公布日期 |
2015.03.03 |
申请号 |
US201213397200 |
申请日期 |
2012.02.15 |
申请人 |
Saudi Basic Industries Corporation |
发明人 |
Asthana Navinchandra S.;Kannan Ganesh |
分类号 |
C08G63/02;C08G63/185;C08L67/02;C08F8/00;C08L55/02;C08L51/04 |
主分类号 |
C08G63/02 |
代理机构 |
Cantor Colburn LLP |
代理人 |
Cantor Colburn LLP ;van Eyl Diderico |
主权项 |
1. A method of manufacture of an amorphous copolyester consisting essentially of polymerizing, in the presence of an esterification catalyst:
(c) a monomer of formula Iwherein
R1, R2, R3, and R5 are each independently a C1-3 alkyl group, a is 0-1, b is 0-4, c is 0-4, and d is 0-3, and each R4 is independently hydrogen or a C1-3 alkyl group; (b) more than 38 to 43 mol % of a virgin monomer selected from terephthalic acid, a di(C1-3 alkyl) terephthalate, and combinations thereof, and (c) about 50 mol % of 1,4-cyclohexane dimethanol; wherein the residue of monomer (a) is present in an amount from 7 to less than 12 mole % of the copolyester based on moles of repeat units in the polyester; and wherein the copolyester has a glass transition temperature of at least 107° C., an intrinsic viscosity of at least 0.7 dl/g, and a molded sample has a Notched Izod value of at least 290 J/m determined in accordance with ASTM D256 wherein the method further comprises heating the components to a temperature within the range of 220° C. to 270° C. during polymerization. |
地址 |
Riyadh SA |