The invention discloses one method of producing polyether polymer dispersant and polyether polymer, wherein the dispersant is a copolymer macromolecule prepared by the propylene oxide or ethylene oxide with an average molecular weight of 6000 to 20000, with containing at least one benzene ring group and one polymerizable carbon-carbon double or triple bond polymer. The preparation method of the dispersant is: synthesizing a basic polyether polyol, adding a cyclic dicarboxylic anhydride into the polyether polyol, then the polyether polyol is reacted with an epoxy compound with the polymerizable double bond, and capping with an epoxy compound to obtain the dispersant; preparing the polymer polyol by the basic polyol, an unsaturated vinyl monomer styrene and acrylonitrile, a polymerization initiator, the dispersant and an optional chain transfer agent; the basic polyether is a polyether polyol with a functionality of 3 to 8.

A curable composition includes a (meth)acrylic acid ester polymer (A), wherein the (meth)acrylic acid ester polymer (A) includes a monomer and a macromonomer (a). The monomer includes a reactive silicon group represented by the general formula (1): SiR.sup.1.sub.aX.sub.3-a (1) (in the formula, R.sup.1 represents a substituted or unsubstituted hydrocarbon group with 1 to 20 carbon atoms, X each independently represents a hydroxyl group or a hydrolyzable group, and a represents 0 or 1.) and a polymerizable unsaturated group. The macromonomer (a) is a (meth)acrylic acid ester polymer having a polymerizable unsaturated group.

A curable composition includes a (meth)acrylic acid ester polymer (A), wherein the (meth)acrylic acid ester polymer (A) includes a monomer and a macromonomer (a). The monomer includes a reactive silicon group represented by the general formula (1): SiR.sup.1.sub.aX.sub.3-a (1) (in the formula, R.sup.1 represents a substituted or unsubstituted hydrocarbon group with 1 to 20 carbon atoms, X each independently represents a hydroxyl group or a hydrolyzable group, and a represents 0 or 1.) and a polymerizable unsaturated group. The macromonomer (a) is a (meth)acrylic acid ester polymer having a polymerizable unsaturated group.

A curable composition containing a polymerizable compound (A) and a polymerization initiator (B). A half width of a temperature-loss tangent (tan ) graph is 90 C. or higher and 150 C. or lower, where the half width is obtained by measuring a dynamic viscoelasticity of a cured substance of this curable composition under measurement conditions of frequency: 1.0 Hz, mode: tensile mode, measurement temperature range: 50 C. to 200 C., and temperature rising rate: 2 C./min.

A method for synthesizing Janus dendrimers, including synthesizing a hydrophobized dendrimer by reacting a dendrimer with a carboxylic acid, forming a first dendron with a thiol group by splitting the hydrophobized dendrimer through breaking a disulfide bond of the core into thiol groups, forming a reactive dendron by reacting the thiol group of the first dendron with methyl acrylate and a radical initiator, synthesizing a primary core by reacting the reactive dendron with ethylenediamine (EDA), and forming a Janus dendrimer by synthesizing a second dendron on the primary core. The hydrophobized dendrimer includes a core containing a disulfide bond.

A method for synthesizing Janus dendrimers, including synthesizing a hydrophobized dendrimer by reacting a dendrimer with a carboxylic acid, forming a first dendron with a thiol group by splitting the hydrophobized dendrimer through breaking a disulfide bond of the core into thiol groups, forming a reactive dendron by reacting the thiol group of the first dendron with methyl acrylate and a radical initiator, synthesizing a primary core by reacting the reactive dendron with ethylenediamine (EDA), and forming a Janus dendrimer by synthesizing a second dendron on the primary core. The hydrophobized dendrimer includes a core containing a disulfide bond.

An example of a bottlebrush polymer has a polymer backbone and a plurality of individual brush moieties bonded to the polymer backbone. The individual brush moieties respectively including a ketone, a hydrophilic segment, and a surface adhesive terminal group. The brush moieties can be functionalized and/or cross-linked.

A novel photocurable resin composition including: a polymer with a weight average molecular weight of 1,000 to 50,000, the polymer having a structural unit of formula (1), and having a structure of formula (2) at an end: wherein X is a C.sub.1-6 alkyl group, vinyl group, allyl group, or glycidyl group; m and n are each independently 0 or 1; Q is a divalent hydrocarbon group having a carbon atom number of 1 to 16; Z is a divalent linking group having a carbon atom number of 1 to 4, wherein the divalent linking group is attached to the O group in formula (1); and R.sup.1 is a hydrogen atom or methyl group; a radical photopolymerization initiator; and a solvent. ##STR00001##

The present invention provides a water-soluble silicone macromer. The water-soluble silicone macromer has a general formula: E(M.sub.1).sub.x(M.sub.2).sub.y, wherein M.sub.1 is a repeating unit which is derived from a silicone containing monomer, M.sub.2 is a repeating unit which is derived from a first hydrophilic monomer, and E is an ethylenically unsaturated group. The amount of M.sub.1 is in a range of 30-60 wt % based on the total weight of the water-soluble silicone macromer, and the amount of M.sub.2 is in a range of 40-70 wt % based on the total weight of the water-soluble silicone macromer. A silicone hydrogel composition containing the water-soluble silicone macromer and a silicone hydrogel lens made of the silicone hydrogel composition are also provided herein.

The present invention has an object to provide a photocurable resin composition which can be quickly cured by irradiation with active energy rays such as ultraviolet rays and achieves excellent adhesion to an electrolyte membrane having properties difficult to bond. Specifically, provided is a photocurable resin composition containing the following (A) to (C) ingredients: (A) ingredient: a polymer having a polyisobutylene backbone containing a [CH.sub.2C(CH.sub.3).sub.2] unit, the polymer having one or more (meth)acryloyl groups; (B) ingredient: a photo-radical polymerization initiator; and (C) ingredient: one or more compounds selected from the group consisting of silicone oligomers each having one or more alkoxy groups and one or more (meth)acryloyl groups, silicone oligomers each having one or more alkoxy groups and one or more amino groups, and silane compounds each having one or more isocyanate groups.