Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

A functional polymer membrane including a porous support and a crosslinked polymer electrolyte, in which the film thickness of the functional polymer membrane is smaller than 100 ?m, the crosslinked polymer electrolyte is a crosslinked polymer formed by subjecting a composition including a monomer having a (meth)acrylamide skeleton to a polymerization curing reaction, and the proportion of elemental oxygen in the elemental composition excluding elemental hydrogen and helium at the surface of the porous support is from 14.0 atom % to 25.0 atom %; and a method for producing the same are provided.

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

The invention relates to compositions for inhibiting the formation of deposits in underground formations such as oil wells, comprising, in a solvent medium, polymers P resulting from the radical copolymerization, preferably controlled and in solution, of a mixture including: monomers having an ethylenically unsaturated structure, selected from monomers that form, by polymerization, a polymer that has an effect of inhibiting the formation of organic and/or inorganic deposits; and polyethylenically unsaturated, cross-linking monomers carrying at least one group that can be cleaved between two ethylene unsaturations, said polymers P being present in the solvent in the form of dispersed nanogels.

The present invention provides a dental adhesive exhibiting excellent initial bond strength and bond durability to both enamel and dentin. The present invention relates to a dental adhesive containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); and a water-soluble polymerizable monomer (c). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1): ##STR00001##
where X is an optionally substituted, linear or branched C.sub.1 to C.sub.6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of O, S, CO, COO, OCO, NR.sup.1, CONR.sup.1, NR.sup.1CO, COONR.sup.1, OCONR.sup.1, and NR.sup.1CONR.sup.1, and R.sup.1 is a hydrogen atom or an optionally substituted, linear or branched C.sub.1 to C.sub.6 aliphatic group.

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

The present invention provides a dental adhesive exhibiting excellent initial bond strength and bond durability to both enamel and dentin. The present invention relates to a dental adhesive containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); and a water-soluble polymerizable monomer (c). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1):

##STR00001##

where X is an optionally substituted, linear or branched C.sub.1 to C.sub.6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of O, S, CO, COO, OCO, NR.sup.1, CONR.sup.1, NR.sup.1CO, COONR.sup.1, OCONR.sup.1, and NR.sup.1CONR.sup.1, and R.sup.1 is a hydrogen atom or an optionally substituted, linear or branched C.sub.1 to C.sub.6 aliphatic group.

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.