申请人:JSR Corporation
公开号:EP1561766A1
公开(公告)日:2005-08-10
The invention provides a ring-opened polynorbornene that is relatively low in birefringence, has specific wavelength dependency about birefringence and is excellent in transparency and heat resistance.
[Solving means] The polymer of the present invention has a structural unit (I) of the general formula (I):
[Chemical formula 1]
wherein in the general formula (I), m and n are integers of 0 to 2, X1 is an ethylene or vinylene group, R1 and R2 are individually a hydrogen atom or a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms, and R3 is a group of the general formula (I-1) or (I-2), in which in the general formulae (I-1) and (I-2), R11 to R27 are individually a hydrogen atom; a halogen atom; a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms, which may have a linkage containing or not containing oxygen, sulfur, nitrogen and/or silicon atom(s); or a polar group, p and q in the general formula (I-1) are individually 0 or a positive integer, with the proviso that when both p and q are 0, R12 and R15, or R19 and R15 may be bonded to each other to form a carbon ring or heterocyclic ring, and the carbon ring or heterocyclic ring may be either a monocyclic structure or a polycyclic structure, and s in the general formula (I-2) is 0 or a positive integer.
本发明提供了一种双折射相对较低、对双折射具有特定波长依赖性、透明度和耐热性优异的开环聚降冰片烯。
[解决方法】本发明的聚合物具有通式(I)的结构单元(I):
[化学式 1]
其中在通式(I)中,m 和 n 是 0 至 2 的整数,X1 是乙烯基或乙烯基,R1 和 R2 分别是氢原子或具有 1 至 30 个碳原子的取代或未取代的烃基,R3 是通式(I-1)或(I-2)的基团,其中在通式(I-1)和(I-2)中,R11 至 R27 分别是氢原子;卤素原子; 具有 1 至 30 个碳原子的取代或未取代的烃基,该烃基可以具有含或不含氧、硫、氮和/或硅原子的连接;或极性基团,通式(I-1)中的 p 和 q 分别为 0 或正整数,但当 p 和 q 均为 0 时,R12 和 R15 或 R19 和 R15 可相互键合形成碳环或杂环,碳环或杂环可为单环结构或多环结构,通式(I-2)中的 s 为 0 或正整数。