A polysiloxane-polyalkylene glycol block copolymer is obtained by reacting a polysiloxane (A) having any functional group selected from a carboxylic anhydride group, a hydroxyl group, an epoxy group, a carboxyl group, and an amino group with a polyalkylene glycol (B) having any functional group selected from a carboxylic anhydride group, a hydroxyl group, a carboxyl group, an amino group, an epoxy group, a thiol group, and an isocyanate group, wherein a content of a structure derived from the polysiloxane (A) is 20% by mass or more and 90% by mass or less with respect to 100% by mass of the polysiloxane-polyalkylene glycol block copolymer.

A polysiloxane-polyalkylene glycol block copolymer is obtained by reacting a polysiloxane (A) having any functional group selected from a carboxylic anhydride group, a hydroxyl group, an epoxy group, a carboxyl group, and an amino group with a polyalkylene glycol (B) having any functional group selected from a carboxylic anhydride group, a hydroxyl group, a carboxyl group, an amino group, an epoxy group, a thiol group, and an isocyanate group, wherein a content of a structure derived from the polysiloxane (A) is 20% by mass or more and 90% by mass or less with respect to 100% by mass of the polysiloxane-polyalkylene glycol block copolymer.

The present invention provide a composition comprising: a polyacrylate-polysilane block copolymer of structure (I) and an organic polymer which is different from the block copolymer of formula (I) wherein m and n independent of one another, are integers ranging from 2 to 4000; p is an integer ranging from 0 to 5; q is an integer ranging from 1 to 5; R.sub.1 represents hydrogen, straight-chain or branched alkyl group having 1 to 4 carbon atoms; R.sub.2 represents hydrogen, straight-chain or branched alkyl group having 1 to 18 carbon atoms; R.sub.3 represents hydrogen, hydroxyl group, straight-chain or branched alkyl group having 1 to 4 carbon atoms, or an C.sub.6-C.sub.14-aryl group; L is a single bond or a bivalent group NH, C(O)NH, NHC(O)NH, OC(O)NH or CH.sub.2; R.sup.4, R.sup.5 and R.sup.6 independent of one another, represent hydrogen, straight-chain or branched alkyl group having 1 to 8 carbon atoms or a polydimethylsiloxane residue; and R.sup.7 represents hydrogen or methyl group. ##STR00001##

The present invention provide a composition comprising: a polyacrylate-polysilane block copolymer of structure (I) and an organic polymer which is different from the block copolymer of formula (I) wherein m and n independent of one another, are integers ranging from 2 to 4000; p is an integer ranging from 0 to 5; q is an integer ranging from 1 to 5; R.sub.1 represents hydrogen, straight-chain or branched alkyl group having 1 to 4 carbon atoms; R.sub.2 represents hydrogen, straight-chain or branched alkyl group having 1 to 18 carbon atoms; R.sub.3 represents hydrogen, hydroxyl group, straight-chain or branched alkyl group having 1 to 4 carbon atoms, or an C.sub.6-C.sub.14-aryl group; L is a single bond or a bivalent group NH, C(O)NH, NHC(O)NH, OC(O)NH or CH.sub.2; R.sup.4, R.sup.5 and R.sup.6 independent of one another, represent hydrogen, straight-chain or branched alkyl group having 1 to 8 carbon atoms or a polydimethylsiloxane residue; and R.sup.7 represents hydrogen or methyl group. ##STR00001##

The invention relates to a method for preparing polyorganosiloxanes functionalized by (meth)acrylate groups, preferably acrylate groups.

The invention relates to a method for preparing polyorganosiloxanes functionalized by (meth)acrylate groups, preferably acrylate groups.

Provided is a method for preparing a (meth)acryloyl group-containing organopolysiloxane having a step of transesterification between the components (a1) and (a2) in the presence of the components (a3) and (a4) to obtain the (meth)acryloyl group-containing organopolysiloxane, wherein component (a1) is an organopolysiloxane represented by the average composition formula (1) which has a hydroxy group-containing group, component (a2) is a (meth)acrylic acid ester represented by the general formula (2), component (a3) is a zirconium metal complex in an amount such that a molar ratio of component (a3) to the hydroxy group of component (a1) is 0.001 to 0.1, and component (a4) is a hydroxy group-containing amine represented by HON(R.sup.4).sub.2 in an amount such that a molar ratio of component (a4) to component (a3) is 0.10 to 1.5, wherein R.sup.4 is, independently of each other, a linear or branched aliphatic hydrocarbon group having 1 to 6 carbon atoms.

An adhesive composition including a resin and electro-conductive material, wherein the electro-conductive material is an ammonium salt of fluorosulfonic acid having 5 or more carbon atoms shown by the general formula (1): (R.sup.1XZSO.sub.3.sup.).sub.n M.sup.n+ (1), wherein, R.sup.1 represents a monovalent hydrocarbon group having 1 to 40 carbon atoms and optionally substituted by a heteroatom or optionally interposed by heteroatom; X represents any of a single bond, ether group, ester group, and amide group; Z represents an alkylene group having 2 to 4 carbon atoms, containing 1 to 6 fluorine atoms, and optionally containing a carbonyl group; M.sup.n+ represents a cation having one or two ammonium cation structures. This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility, and light weight, which manufactures at low cost and does not cause large lowering of the electric conductivity even when it is wetted with water or dried.

An adhesive composition including a resin and electro-conductive material, wherein the electro-conductive material is an ammonium salt of fluorosulfonic acid having 5 or more carbon atoms shown by the general formula (1): (R.sup.1XZSO.sub.3.sup.).sub.n M.sup.n+ (1), wherein, R.sup.1 represents a monovalent hydrocarbon group having 1 to 40 carbon atoms and optionally substituted by a heteroatom or optionally interposed by heteroatom; X represents any of a single bond, ether group, ester group, and amide group; Z represents an alkylene group having 2 to 4 carbon atoms, containing 1 to 6 fluorine atoms, and optionally containing a carbonyl group; M.sup.n+ represents a cation having one or two ammonium cation structures. This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility, and light weight, which manufactures at low cost and does not cause large lowering of the electric conductivity even when it is wetted with water or dried.

A water absorbing resin has a siloxane skeleton which is a copolymer containing a structural unit derived from a polymerizable vinyl monomer (A) shown by the general formula (1), a structural unit derived from a polymerizable vinyl monomer (B) shown by the general formula (3), and a structural unit derived from an organopolysiloxane (C) having polymerizable groups at the both terminals thereof shown by the general formula (4). The water absorbing resin has a siloxane skeleton that is capable of thickening an aqueous composition without making it sticky, together with a cosmetic containing the same. ##STR00001##