Abstract: The fluorine-containing epoxy(meth)acrylate resin of the invention is represented by the following general formula (I). ##STR1## wherein R.sub.f is selected from the group consisting of --.phi.--C(CF.sub.3).sub.2 --.phi.--(where .phi. stands for ##STR2## --C(CF.sub.3).sub.2 --.phi.'--C(CF.sub.3).sub.2 --(where .phi.' stands for and --CH.sub.2 (CF.sub.2).sub.6 CH.sub.2 --; n is zero or a positive interger; and X is hydrogen or methyl group. The resin of the invention may be prepared by reacting a diglycidyl ether of a fluorine-containing hydrocarbon (R.sub.f) with acrylic acid or methacrylic acid. Further provided is an adhesive composition comprising the aforementioned fluorine-containing epoxy(meth)acrylate resin and a photo-polymerization initiator, which can be cured at room temperature within a short time by irradiation with UV rays to form a cured product having a refractive index N.sub.D.sup.20 ranging from 1.434 to 1.532.

Abstract: The fluorine-containing epoxy(meth)acrylate resin of the invention is represented by the following general formula (I). ##STR1## wherein R.sub.f is selected from the group consisting of --.phi.--C(CF.sub.3).sub.2 --.phi.-- (where .phi. stands for ##STR2## --C(CF.sub.3).sub.2 --.phi.'--C(CF.sub.3).sub.2 -- (where .phi.' stands for ##STR3## and --CH.sub.2 (CF.sub.2).sub.6 CH.sub.2 --; n is zero or a positive integer; and X is hydrogen or methyl group. The resin of the invention may be prepared by reacting a diglycidyl ether of a fluorine-containing hydrocarbon (R.sub.f) with acrylic acid or methacrylic acid. Further provided is an adhesive composition comprising the aforementioned fluorine-containing epoxy(meth)acrylate resin and a photo polymerization initiator, which can be cured at room temperature within a short time by irradiation with an UV ray to form a cured product having a refractive index n.sub.D.sup.20 ranging from 1.434 to 1.532.

Abstract: An optically active compound of the formula: ##STR1## wherein R is alkyl or alkoxy, R* is an optically active alkyl group, X is alkyl or halogen, Y is a single bond ##STR2## and C* is an asymmetric carbon, is chemically stable and shows or induces large spontaneous polarization and is useful in a chiral liquid crystal composition.

Abstract: A liquid crystal compound of the formula: ##STR1## wherein m and n are independently integers of 1 to 22; k and l are independently integers of 1 to 2; and C* is an asymmetric carbon atom, is chemically stable and can be applied to liquid crystal display devices operable at room temperature.

Abstract: The fluorine-containing epoxy(meth)acrylate resin of the invention is represented by the following general formula (I). ##STR1## wherein R.sub.f is selected from the group consisting of --.phi.--C(CF.sub.3).sub.2 --.phi.-- ##STR2## --C(CF.sub.3).sub.2 --.phi.'--C(CF.sub.3).sub.2 -- ##STR3## and --CH.sub.2 (CF.sub.2).sub.6 CH.sub.2 --; n is zero or a positive integer; and X is hydrogen or methyl group.The resin of the invention may be prepared by reacting a diglycidyl ether of a fluorine-containing hydrocarbon (R.sub.f) with acrylic acid or methacrylic acid. Further provided is an adhesive composition comprising the aforementioned fluorine-containing epoxy(meth)acrylate resin and a photo polymerization initiator, which can be cured at room temperature within a short time by irradiation with an UV ray to form a cured product having a refractive index n.sub.d.sup.20 ranging from 1.434 to 1.532.

Abstract: An optically active compound represented by the general formula (I) of:R--Z--COO--(Ph).sub.k --Ph(Y)--CO--(CH.sub.2).sub.m C*HE L (1)In the general formula (I); R is an alkyl or alkoxy group having 4 to 22 carbon atoms; Z is the one selected from the group consisting of --Ph--, --Ph(X)--, --Ph--Ph--, Ph(X)--Ph--, --Ph--cy--, --Ph(X)--cy-- and --py--Ph-- is a 1,4-substituted phenylene group; --Ph--Ph-- is a 4,4'-substituted diphenylene group; --cy-- is a trans-1,4-cyclohexane group, --py is 2,5-substituted pyrimide group; X is a halogen atom at the ortho-position to R; k is zero or 1, Y is the one selected from the group consisting of H, OH, halogen atoms and methyl group; C* is an asymmetric carbon atom; E is the one selected from the group consisting of methyl group, halogen atoms and CF.sub.3 ; L is an alkyl, aryl or aralkyl group having not more than 10 carbon atoms; and m is an integer of zero to 6 where m takes zero when Y is H and Z is --Ph-- or --Ph--Ph--.