A polymerizable composition is formed from (a) a polymerizable olefinically unsaturated substance, (b) a phosphorus oxyacid and an organic amine, at least one of which bears a polymerizable olefinically unsaturated group and optionally (c) a particulate inorganic material. Such compositions are useful in dental applications.

Polyphthalate polyesters or polyester/polycarbonates are prepared from phthalates and 4,4'-[1-methyl-4-(1-methyl-ethyl)-1,3-cyclohexandlyl]-bisphenol.

Polymeric articles, including membranes, with surfaces having a desired chemical functionality are created by surface segregation of a branched component blended with a compatible, matrix base component, the branched component having the desired chemical functionality. In particular, hydrophilic surfaces are created via surface segregation of a branched hydrophilic copolymer blended into a polymer matrix. The use of branched molecular architecture provides a thermodynamic mechanism for the segregation of the hydrophilic species to the surface and a means for achieving a high surface coverage of the hydrophilic moiety. The branched hydrophilic copolymer can be defined by a random copolymer including two or more methacrylate or acrylate monomers, at least one of which features a short hydrophilic side chain, such as a polyethylene glycol side chain. The branched hydrophilic copolymer is compatible, and well-entangled, with the acrylate polymer matrix.

A new hybrid resin having improved mechanical and fracture mechanical properties is provided which contains polyisocyanate and/or blocked polyisocyanate, water glass and organic phosphoric acid ester and/or other plasticizer, characterized in that it also contains vinyl ester and/or polyester as resin component. The invention also relates to the composite produced using such hybrid resin and the processes for producing the resin and the composite.

The invention relates to an adhesive composition which is suitable for use on a shaped part of polyester, in particular a polyester film, and comprises a copolyester, optionally in combination with light-sensitive substances, fillers and pigments, whereby the copolyester additionally contains at least one copolymer of vinylidene chloride, preferably in a weight ratio of about 3:1 to 1:1. The adhesive composition can furthermore contain cellulose acyl esters, such as low molecular-weight cellulose acetobutyrate or cellulose propionate. Polybasic oxycarboxylic acids and levelling agents can also be present. The adhesive composition can be employed in mixtures with, for example, light-sensitive lacquer systems.

The invention relates to an adhesive composition which is suitable for use on a shaped part of polyester, in particular a polyester film, and comprises a copolyester, optionally in combination with light-sensitive substances, fillers and pigments, whereby the copolyester additionally contains at least one copolymer of vinylidene chloride, preferably in a weight ratio of about 3:1 to 1:1. The adhesive composition can furthermore contain cellulose acyl esters, such as low molecular-weight cellulose acetobutyrate or cellulose propionate. Polybasic oxycarboxylic acids and levelling agents can also be present. The adhesive composition can be employed in mixtures with, for example, light-sensitive lacquer systems.

There is disclosed a composition for forming a protective coating upon a substrate. The composition has been found particularly useful for forming a protective coating upon components of automotive vehicles, such as a bedliner for a pick-up truck. The composition may include, without limitation, an isocyanate component and an amine component and optionally includes one or more of a catalyst, stabilizer, pigment, fire retardant or other additives.

A method of producing a polyurethane molded article is provided, in which one molding machine which can provide distinctly polyisocyanate component(s) and two kinds of polyol components is used, and prior to completion of the feed of a first polyurethane mixture liquid containing a polyisocyanate and a polyol component without a blowing agent into a mold, a second polyurethane mixture liquid containing a polyisocyanate and a second polyol component with a blowing agent is fed into the mold. The method produces, in a single stage, a polyurethane foam molded article having the skin or high density portion selectively formed on portions of the molded article actually requiring them, where the proportions of the skin and the high density portion and the foamed core can be varied freely.

The present invention relates to polyol mixtures which are suitable for the preparation of rigid polyurethane foams and comprise addition products of alkylene oxide on aromatic di- or polyamines, and rigid foams prepared with these polyol mixtures.

A polymerization curable composition comprising a specific polyfunctional polymerizable monomer having a hard molecular structure with an L-scale Rockwell hardness of its homopolymer of 60 or more, a specific polyfunctional polymerizable monomer and a photochromic compound, a photochromic lens substrate composed of a cured product of the polymerization curable composition, and a lens comprising the photochromic lens substrate. The substrate and lens show excellent photochromic properties such as high color development density and high fading rate, and the cured product has excellent substrate properties such as hardness, heat resistance and impact resistance as well as strength (toughness) that allows for its use in rimless spectacles.