Solid high polymer substance, process and use thereof
申请人:DAIKIN INDUSTRIES, LIMITED
公开号:EP0358195A2
公开(公告)日:1990-03-14
A solid high polymer substance obtained by dissolving in an acrylic monomer an amorphous fluorine-containing polymer soluble in the acrylic monomer, and subsequently subjecting the monomer to polymerization, or further forming an interpenetrating polymer network.
Polymer material having shape memory characteristics
申请人:DAIKIN INDUSTRIES, LIMITED
公开号:EP0385443A2
公开(公告)日:1990-09-05
The present invention provides a polymer material having shape memory characteristics and characterized in that the material is prepared from a polymer substance obtained by dissolving an amorphous fluorine-containing polymer in an acrylic monomer, and polymerizing the monomer with or without permitting the resulting polymer to form an interpenetrating polymer network, and a polymer material having shape memory characteristics and characterized in that the material is prepared from a blend of (a) and (b), (a) being an amorphous fluorine-containing polymer or crystalline polymer containing vinylidene fluoride, and (b) being an acrylic polymer.
This invention provides dental adhesive compositions consisting essentially of
(a) an aliphatic amine salt of a polymerizable phosphoric ester, as represented by the formula
where R and R′ are specific radicals;
(b) at least one radical-polymerizable unsaturated monomer; and
(c) a radical polymerization initiator. These compositions are useful in bonding living dental tissue restoration materials to living tooth tissues, particularly to dentin.
The present invention provides a coating composition which comprises (a) a polymer containing vinylidene fluoride, (b) an acrylic polymer and (c) acetylacetone, as essential components, and an article which is coated or impregnated with the coating composition.
A gasket for automotive engine transmission, made from a cross-linking composition comprising 100 parts by weight of a polymer prepared by dissolving or swelling a noncrystalline fluoropolymer in an acrylic monomer and polymerizing the monomer, 0.1 to 100 parts by weight of a filler, and 0.1 to 10 parts by weight of a cross-linking agent. This gasket is excellent in mechanical strength and resistance to engine oil bubbling at high temperatures and also in compression set, resistances to automatic transmission fluid and long-life coolant, and durability.