Provided is an aqueous resin composition having a composite resin (ABC) dissolved or dispersed in an aqueous medium, and further containing a plasticizer (D), the composite resin (ABC) having a polysiloxane segment (B) and a polysiloxane segment (C) which are bonded through a silicon-oxygen bond, wherein the polysiloxane segment (B) is present in a composite resin (AB) having a polymer segment (A) having a neutralized acid group and the polysiloxane segment (B), which are chemically bonded to each other, and the polysiloxane segment (C) is derived from a condensation product (c) of an alkyltrialkoxysilane having an alkyl group having 1 to 3 carbon atoms, wherein the content of the total of the polysiloxane segment (B) and the polysiloxane segment (C) in the composite resin (ABC) is 15 to 85% by mass. The aqueous resin composition can form a coating film which is excellent in appearance of the coating film.

Provided is an aqueous resin composition having a composite resin (ABC) dissolved or dispersed in an aqueous medium, and further containing a plasticizer (D), the composite resin (ABC) having a polysiloxane segment (B) and a polysiloxane segment (C) which are bonded through a silicon-oxygen bond, wherein the polysiloxane segment (B) is present in a composite resin (AB) having a polymer segment (A) having a neutralized acid group and the polysiloxane segment (B), which are chemically bonded to each other, and the polysiloxane segment (C) is derived from a condensation product (c) of an alkyltrialkoxysilane having an alkyl group having 1 to 3 carbon atoms, wherein the content of the total of the polysiloxane segment (B) and the polysiloxane segment (C) in the composite resin (ABC) is 15 to 85% by mass. The aqueous resin composition can form a coating film which is excellent in appearance of the coating film.

Described are polymerizable high energy light absorbing compounds of formula I: ##STR00001##
Wherein Y, Pg, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are as described herein. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

Described are polymerizable high energy light absorbing compounds of formula I: ##STR00001##
Wherein Y, Pg, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are as described herein. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

One object of the present invention is to provide an emulsion composition comprising a silicone and an emulsion of a resin having a film forming property, which emulsion composition may provide a coating agent which effectively exhibits slidability of silicone on a substrate, while maintaining transparency. Another object of the present invention is to provide a laminate having a film made of the coating agent. The present invention provides an emulsion composition comprising (I) an emulsion of a resin having a film forming property in a solid content of 60 to 99.9 parts by mass and (II) an emulsion of a silicone-acrylic core-shell resin in solid content of 0.1 to 40 parts by mass, a total mass of the solid contents of components (I) and (II) being 100 parts by mass, wherein a core of the silicone-acrylic core-shell resin (II) is composed of an organopolysiloxane (A), a shell layer of the silicone-acrylic core-shell resin (II) is composed of a poly(meth)acrylate ester (B), a mass ratio of the organopolysiloxane (A) to the poly(meth)acrylate ester (B) is in a range of 40:60 to 95:5, and a covering ratio by the poly(meth)acrylate ester on a surface of the silicone-acrylic core-shell resin is at least 50%.

One object of the present invention is to provide an emulsion composition comprising a silicone and an emulsion of a resin having a film forming property, which emulsion composition may provide a coating agent which effectively exhibits slidability of silicone on a substrate, while maintaining transparency. Another object of the present invention is to provide a laminate having a film made of the coating agent. The present invention provides an emulsion composition comprising (I) an emulsion of a resin having a film forming property in a solid content of 60 to 99.9 parts by mass and (II) an emulsion of a silicone-acrylic core-shell resin in solid content of 0.1 to 40 parts by mass, a total mass of the solid contents of components (I) and (II) being 100 parts by mass, wherein a core of the silicone-acrylic core-shell resin (II) is composed of an organopolysiloxane (A), a shell layer of the silicone-acrylic core-shell resin (II) is composed of a poly(meth)acrylate ester (B), a mass ratio of the organopolysiloxane (A) to the poly(meth)acrylate ester (B) is in a range of 40:60 to 95:5, and a covering ratio by the poly(meth)acrylate ester on a surface of the silicone-acrylic core-shell resin is at least 50%.

The invention provides a class of photochromic polydiorganosiloxane vinylic crosslinkers. Each of the photochromic polydiorganosiloxane vinylic crosslinkers of the invention comprise (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and photochromic siloxane unit having one methyl substituent and one organic substituent having a photochromic moiety that capable of undergoing a reversible color change upon exposure to UV-irradiation or high-energy-violet light; (2) two terminal ethylenically-unsaturated groups. The invention also provides a soft photochromic contact lens, especially a photochromic silicone hydrogel contact lens, which comprises a crosslinked polymeric material comprising repeating units of at least one of such a class of photochromic polydiorganosiloxane vinylic crosslinkers. The invention further provides a method of producing a photochromic contact lens from a polymerizable composition comprising at least one of such a class of photochromic polydiorganosiloxane vinylic crosslinkers.

This invention includes a wettable biomedical device containing a high molecular weight hydrophilic polymer and a hydroxyl-functionalized silicone-containing monomer.

This invention includes a wettable biomedical device containing a high molecular weight hydrophilic polymer and a hydroxyl-functionalized silicone-containing monomer.

The present invention relates to an aqueous polymer dispersion containing a multistage emulsion polymer particle. The multistage emulsion polymer particle contains a polysiloxane formed in the first stage; a transition layer formed in the second stage; and a polyacrylate formed in the third stage. The transition layer is made of silane coupling agents. The present invention also relates to a method of preparing the aqueous polymer dispersion and use of the aqueous polymer dispersion for preparing coatings.