The invention provides a chain-extended polydiorganosiloxane vinylic crosslinker which comprises (1) a polymer chain comprising at least two polydiorganosiloxane segments and one hydrophilized linker between each pair of polydiorganosiloxane segements, wherein each polydiorganosiloxane comprises at least 5 dimethylsiloxane units in a consecutive sequence, wherein the hydrophilized linker is a divalent radical having at least two (meth)acrylamide moieties; (2) two terminal (meth)acryloyl groups, wherein the chain-extended polydiorganosiloxane vinylic crosslinker has an average molecular weight of at least about 1500 Daltons. The present invention is also related to a silicone hydrogel contact lens, which comprises repeating units derived from a chain-extended polydiorganosiloxane vinylic crosslinker of the invention. In addition, the invention provides a method for making silicone hydrogel contact lenses using a lens-forming formulation comprising a chain-extended polydiorganosiloxane vinylic crosslinker of the invention.

The present invention is a curable composition comprising a component (A), a component (B), a component (C), and a component (D), the curable composition comprising the component (A) and the component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:20, the component (A) being a silane compound (co)polymer that is represented by a formula (a-1) or a formula (a-2),
(CHR.sup.1X.sup.0-D-SiO.sub.3/2).sub.m(R.sup.2SiO.sub.3/2).sub.n(CHR.sup.1X.sup.0-D-SiZ.sup.1O.sub.2/2).sub.o(R.sup.2SiZ.sup.2O.sub.2/2).sub.p(CHR.sup.1X.sup.0-D-SiZ.sup.3.sub.2O.sub.1/2).sub.q(R.sup.2SiZ.sup.4.sub.2O.sub.1/2).sub.r (a-1)
(R.sup.3SiO.sub.3/2).sub.s(R.sup.3SiZ.sup.5O.sub.2/2).sub.t(R.sup.3SiZ.sup.5.sub.2O.sub.1/2).sub.u (a-2) the component (B) being fine particles having an average primary particle size of more than 0.04 m and 8 m or less, the component (C) being a silane coupling agent that comprises a nitrogen atom in its molecule, and the component (D) being a silane coupling agent that comprises an acid anhydride structure in its molecule, and an optical element-securing composition, and a cured product, and an optical element-securing material, and a method for using the curable composition, and an optical device.

The present invention is a curable composition comprising a component (A), a component (B), a component (C), and a component (D), the curable composition comprising the component (A) and the component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:20, the component (A) being a silane compound (co)polymer that is represented by a formula (a-1) or a formula (a-2),
(CHR.sup.1X.sup.0-D-SiO.sub.3/2).sub.m(R.sup.2SiO.sub.3/2).sub.n(CHR.sup.1X.sup.0-D-SiZ.sup.1O.sub.2/2).sub.o(R.sup.2SiZ.sup.2O.sub.2/2).sub.p(CHR.sup.1X.sup.0-D-SiZ.sup.3.sub.2O.sub.1/2).sub.q(R.sup.2SiZ.sup.4.sub.2O.sub.1/2).sub.r (a-1)
(R.sup.3SiO.sub.3/2).sub.s(R.sup.3SiZ.sup.5O.sub.2/2).sub.t(R.sup.3SiZ.sup.5.sub.2O.sub.1/2).sub.u (a-2) the component (B) being fine particles having an average primary particle size of more than 0.04 m and 8 m or less, the component (C) being a silane coupling agent that comprises a nitrogen atom in its molecule, and the component (D) being a silane coupling agent that comprises an acid anhydride structure in its molecule, and an optical element-securing composition, and a cured product, and an optical element-securing material, and a method for using the curable composition, and an optical device.

A method for producing a liquid crystal panel of the present invention is a method for producing a liquid crystal panel including paired substrates, a liquid crystal layer between the substrates, and a horizontal photo-alignment film between at least one of the substrates and the liquid crystal layer, the method including the steps of: forming a film containing a polymer having a specific structure on a surface of at least one of the substrates; and irradiating the film with S-polarized light from a direction oblique to the normal to the substrate surface to perform an alignment treatment on the film and thereby form a horizontal photo-alignment film, wherein the horizontal photo-alignment, film aligns liquid crystal molecules perpendicularly to the polarization direction of light applied from the substrate normal.

The present disclosure relates to a copolycarbonate having improved flowability while maintaining excellent impact strength at room temperature and low temperature, and a composition including the same.

The present disclosure relates to a copolycarbonate having improved flowability while maintaining excellent impact strength at room temperature and low temperature, and a composition including the same.

The invention provides a hydrophilized polydiorganosiloxane vinylic crosslinker which comprises (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and hydrophilized siloxane units each having one methyl substituent and one monovalent C.sub.4-C.sub.40 organic radical substituent having two to six hydroxyl groups, wherein the molar ratio of the hydrophilized siloxane units to the dimethylsiloxane units is from about 0.035 to about 0.15, and (2) two terminal (meth)acryloyl groups. The hydrophilized polydiorganosiloxane vinylic crosslinker has a number average molecular weight of from about 3000 Daltons to about 80,000 Daltons. The present invention is also related to a silicone hydrogel contact lens, which comprises repeating units derived from a hydrophilized polydiorganosiloxane vinylic crosslinker of the invention.

The invention provides a hydrophilized polydiorganosiloxane vinylic crosslinker which comprises (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and hydrophilized siloxane units each having one methyl substituent and one monovalent C.sub.4-C.sub.40 organic radical substituent having two to six hydroxyl groups, wherein the molar ratio of the hydrophilized siloxane units to the dimethylsiloxane units is from about 0.035 to about 0.15, and (2) two terminal (meth)acryloyl groups. The hydrophilized polydiorganosiloxane vinylic crosslinker has a number average molecular weight of from about 3000 Daltons to about 80,000 Daltons. The present invention is also related to a silicone hydrogel contact lens, which comprises repeating units derived from a hydrophilized polydiorganosiloxane vinylic crosslinker of the invention.

A process includes utilizing biorenewable cis-3-hexenol to form a bio-derived cross-linker and utilizing the bio-derived cross-linker to form a cross-linked polymeric material.

A process includes utilizing biorenewable cis-3-hexenol to form a bio-derived cross-linker and utilizing the bio-derived cross-linker to form a cross-linked polymeric material.