申请人:Motoyoshi Tetsuya
公开号:US20110288261A1
公开(公告)日:2011-11-24
The object of this invention is to provide an optical film formed of a copolycarbonate having a desired chromatic dispersion and low photoelasticity and having excellent melt processability.
The optical film comprises a copolycarbonate composed of 25 to 90 mol % of unit (A) of the following formula,
wherein each of R
1
and R
2
is independently a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms or a halogen atom, each of R
3
and R
4
is independently a hydrocarbon group having 1 to 10 carbon atoms, each of m and n is independently an integer of 0 to 4, and each of p and q is independently an integer of 0 or more,
and 10 to 75 mol % of unit (B) of the following formula,
wherein R
a
is a monocyclic or polycyclic alicyclic hydrocarbon group having 4 to 20 carbon atoms, the alicyclic hydrocarbon group may contain a hetero atom or may have a bridge structure, and q is 0 or 1,
the optical film satisfying the following expression (1),
R
(450)<
R
(550)<
R
(650) (1)
wherein R(450), R(550) and R(650) are in-plane retardation values of the film at wavelengths of 450 nm, 550 nm and 650 nm.
本发明的目的是提供一种光学薄膜,其由具有所需色散和低光弹性以及优异的熔融加工性的共聚碳酸酯形成。该光学薄膜包括由以下式中25至90摩尔%的(A)单元组成的共聚碳酸酯,其中R1和R2各自独立地为氢原子,具有1至10个碳原子的烃基或卤素原子,R3和R4各自独立地为具有1至10个碳原子的烃基,m和n各自独立地为0至4的整数,p和q各自独立地为0或更多的整数,并且由以下式中10至75摩尔%的(B)单元组成,其中Ra是具有4至20个碳原子的单环或多环脂环烃基,脂环烃基可以含有杂原子或具有桥式结构,q为0或1,该光学薄膜满足以下式(1),R(450)
Curable epoxy resin composition
申请人:ASAHI DENKA KOGYO KABUSHIKI KAISHA
公开号:EP0197458A2
公开(公告)日:1986-10-15
A thermosetting epoxy resin composition of one pack type is provided which contains as indispensable constituents (I) an epoxy resin containing more than one adjacent epoxy groups on the average in the molecule and (II) curing amount or curing-accelerating amount of a compound obtained by reacting (a) a specified amine/epoxy adduct with (b) phenolic , resin(s) and/or polyhydric phenol compound(s) in a weight ratio of (a) to (b) of 1/0.1 to 1/0.8. The composition of the present invention has excellent storage stability and it is curable at a relatively low temperature to form a cured product having excellent mechanical strength, adhesiveness and water resistance.
本发明提供了一种单组分热固性环氧树脂组合物,其不可或缺的成分包括:(I) 分子中平均含有一个以上相邻环氧基团的环氧树脂;(II) 固化量或固化加速量的化合物,该化合物由(a)特定的胺/环氧加合物与(b)酚醛树脂和/或多羟基酚化合物反应而得,(a)与(b)的重量比为 1/0.1 至 1/0.8。本发明的组合物具有极佳的储存稳定性,可在相对较低的温度下固化,形成具有极佳机械强度、粘合性和耐水性的固化产品。
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