申请人:Miyaki Nobuyuki
公开号:US20060041092A1
公开(公告)日:2006-02-23
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, X
1
is an ethylene or vinylene group, R
1
and R
2
are individually a hydrogen atom or a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms, and R
3
is a group of the general formula (I-1) or (I-2), in which in the general formulae (I-1) and (I-2), R
11
to R
27
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, R
12
and R
15
, or R
19
and R
15
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,X
1
是乙烯基或乙烯基,R
1
和 R
2
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,以及 R
3
是通式(I-1)或(I-2)的基团,其中在通式(I-1)和(I-2)中,R
11
至 R
27
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,R
12
和 R
15
或 R
19
和 R
15
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。