Polymerizable liquid crystal compound, liquid crystal...

Details Polymerizable liquid crystal compound, liquid crystal... Polymerizable liquid crystal compound, liquid crystal...

2006-12-26

2008-10-28

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299630, C252S299660, C252S299670, C560S008000, C560S055000, C560S059000, C560S061000, C560S064000, C560S076000, C560S084000, C560S102000

Reexamination Certificate

active

07442418

ABSTRACT:
The present compound represented by formula(I)in-line-formulae description="In-line Formulae" end="lead"?CH2═CR1—COO—(L)k-E1-E2-E3-(E4)m-(E5)n-R2  (1)in-line-formulae description="In-line Formulae" end="tail"?provided that the symbols in the formula have the following meanings:R1: a hydrogen atom or a methyl group;R2: a C1-8alkyl group;L: —(CH2)pO—, —(CH2)q—, -Cy-COO— (Cy is a trans-1,4-cyclohexylene group), -Cy-OCO—, -E6-(CH2)2—, -E7-CH2O— or -E8-O— (wherein each of p and q which are independent of each other, is an integer of from 2 to 8);E1, E2, E3E4, E5, E6, E7, E8: each independently a 1,4-pheneylene group or a trans-1,4-cyclohexylene group (provided that at least one of E1, E2and E3is a trans-1,4-cyclohexylene group, and in a case where L is-Cy-OCO—, E1is a trans-1,4-cyclohexylene group),andk, m, n: each independently 0 or 1, provided that when k is 1 and L is -Cy-COO—, -Cy-OCO—, -E6-(CH2)2—, -E7-CH2O— or -E8-O—, at least one of m and n is 0.The present compound is useful for liquid crystal composition and optical element.

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U.S. Appl. No. 11/616,126, filed Dec. 26, 2006, Kaida et al.
U.S. Appl. No. 12/104,998, filed Apr. 17, 2008, Nagayama et al.

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