The present invention provides a bio-electrode composition including (A) an ionic material and (C) a metal powder, wherein the component (A) is a polymer compound containing a repeating unit-a having a structure selected from the group consisting of an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and fluorosulfonamide. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried.

The present invention provides a bio-electrode composition including (A) an ionic material and (C) a metal powder, wherein the component (A) is a polymer compound containing a repeating unit-a having a structure selected from the group consisting of an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and fluorosulfonamide. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried.

The present invention aims to provide a polymeric material having reduced coloration in the visible light region, a high refractive index, and low optical dispersion. The present invention relates to a polymeric material having a sulfoxide structure in a main chain.

A bio-electrode, excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried, includes an electro-conductive base material and a living body contact layer formed on the electro-conductive base material. The living body contact layer is a cured material of a bio-electrode composition including (A) an ionic material and (C) a metal powder, wherein the component (A) is a polymer compound containing a repeating unit-a having a structure selected from an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and fluorosulfonamide.

A bio-electrode, excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried, includes an electro-conductive base material and a living body contact layer formed on the electro-conductive base material. The living body contact layer is a cured material of a bio-electrode composition including (A) an ionic material and (C) a metal powder, wherein the component (A) is a polymer compound containing a repeating unit-a having a structure selected from an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and fluorosulfonamide.

To provide one liquid type dental adhesive composition that exhibits excellent adhesive property to glass ceramics, oxide-base ceramics and tooth substance, and has excellent storage stability, which are contrary features. One liquid type dental adhesive composition contains (a) silane coupling agent represented by general formula (1), (b) acidic group-containing polymerizable monomer, (c) volatile organic solvent, and (d) water.

##STR00001##

(In the formula, R.sup.1 represents an organic group having at least one functional group selected from the group consisting of a (meth)acryloyl group, a vinyl group and an epoxy group, R.sup.2 represents C4-C8 linear alkyl group, R.sup.3 represents C1-C8 alkyl group, and n is integer selected from 1 to 3.)

To provide one liquid type dental adhesive composition that exhibits excellent adhesive property to glass ceramics, oxide-base ceramics and tooth substance, and has excellent storage stability, which are contrary features. One liquid type dental adhesive composition contains (a) silane coupling agent represented by general formula (1), (b) acidic group-containing polymerizable monomer, (c) volatile organic solvent, and (d) water.

##STR00001##

(In the formula, R.sup.1 represents an organic group having at least one functional group selected from the group consisting of a (meth)acryloyl group, a vinyl group and an epoxy group, R.sup.2 represents C4-C8 linear alkyl group, R.sup.3 represents C1-C8 alkyl group, and n is integer selected from 1 to 3.)

The present invention relates to the use of copolymers as binders for pelletizing metal containing ores such as iron containing ores. The copolymers comprise monomer units derived from at least one monomer C of formula (I).

The present invention relates to the use of copolymers as binders for pelletizing metal containing ores such as iron containing ores. The copolymers comprise monomer units derived from at least one monomer C of formula (I).

The present invention addresses the problem of providing a crosslinked film and a hydrocarbon-based proton conducting solid electrolyte having a proton conductivity equal to that of a perfluorosulfonate ion exchange polymer. Disclosed as a means for solving this problem is a proton conducting polymer electrolyte which is composed of a sulfonated polyphenyl compound having a plurality of repeating units, and wherein two or more (for example, four or six) sulfonic groups are introduced into one repeating unit on average. The sulfonated polyphenyl compound may be a polymer or copolymer having a skeleton structure selected from among a polyaryl sulfide, a polyaryl ether, a polyarylsulfone, a polyarylketone and a polyaryl hexafluoroisopropylidene. A proton conducting solid polymer electrolyte membrane is able to be produced by shaping this proton conducting polymer electrolyte into a film form and crosslinking this proton conducting polymer electrolyte via sulfonic groups.