Daihachi Chemical Industry Co., Inc.

Osaka Research Institute of Industrial Science and Technology

Osaka Municipal Technical Research Institute

Manabu Hirata

Kimihiro Matsukawa

Seiji Watase

Satoru Ono

Noriaki Tokuyasu

Kazuo Fujimoto

Makoto Kyoda

Koji Mitamura

The present invention provides a polyurethane which has excellent flame retardance and various excellent performances. A phosphoramidate compound having a specific structure is used as a flame retardant for a polyurethane foam or a polyurethane elastomer. By mixing this flame retardant with a raw material of a polyurethane resin (polyol, polyisocyanate and various additives), a polyurethane reactive raw material composition is obtained. By reacting the polyisocyanate and active hydrogen-containing compounds such as polyol in the polyurethane reactive raw material composition, a curing reaction takes place and a polyurethane foam composition or polyurethane elastomer composition is obtained. The obtained polyurethane resin composition has excellent flame retardance and other excellent performances as the polyurethane foam or polyurethane elastomer.

Flame retardant and flame retardant polyurethane resin composition

An objective of the present invention is to provide an organic-inorganic hybrid acrylic polymer having an increased refractive index, which has a higher transparency and a less impaired scratch resistance; a metal oxide dispersion and a polymerizable composition as materials for the polymer; and the organic-inorganic hybrid polymer capable of being produced in a crack-free manner. Another objective of the present invention is to provide a high-performance antireflection film using the organic-inorganic hybrid polymer. The metal oxide dispersion of the present invention comprises a phosphorus compound represented by Formula (1): (wherein, Ris a hydrogen atom, an alkyl group, an alkynyl group, an alkenyl group, an aryl group, an aliphatic heterocyclic group, or an aromatic heterocyclic group; Ris an organic residue; and n is 1 or 2) and a metal oxide.

Metal oxide dispersion, polymerizable composition comprising the metal oxide dispersion, and polymer thereof

Provided are a method for easily and quickly producing a patterned thin film having a high refractive index and a high transparency, and a highly refractive thin film produced by the method. The method comprises a first step: a step of forming, on a substrate, a coating using a sol containing a metal oxide modified with a phosphorus compound represented by the following formula (1): (wherein Ris a hydrogen atom, an alkyl group, an alkynyl group, an alkenyl group, an aryl group, an aliphatic heterocyclic group, or an aromatic heterocyclic group; Ris a divalent organic residue; and n is 1 or 2); a second step: a step of curing the coating on the substrate obtained in the first step by light irradiation; and a third step: a step of further adding energy to the cured film obtained in the second step by heating and/or light irradiation.

Method for producing thin film having high refractive index and high transparency, and thin film produced by the method

A novel process for preparing in a high purity and in a high yield phosphonates having a secondary and/or tertiary alcoholic hydroxyl group at the end of a P&#x2014;C bond chain thereof with the use of a phosphite and a carbonyl compound as raw materials.

Process for preparing phosponates having alcoholic hydroxyl group

A phosphate-phosphonate compound which is lowly volatile, has a high phosphorus content, and does not influence various properties of a product when used as a material therefor. It is reduced in environmental burden in view of suitability for recycling and contains no halogen atoms including chlorine and bromine. The phosphorus compound has a phosphate-phosphonate bond within the molecule and has a specific ring structure. Because of this, the compound has excellent flame retardancy. Addition of the phosphate-phosphonate compound as a flame retardant for polyurethanes or polyesters imparts satisfactory plasticity and flame retardancy. The flame retardant is reduced in the exertion of adverse influences on the material properties of, in particular, polyurethane foams, polyester fibers, and the like.

Organophosphorus compound having phosphate-phosphonate bond, and flame-retardant polyester fiber and flame-retardant polyurethane resin composition each containing the same

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Osaka, Japan

Manabu Hirata