Dainippon Ink and Chemicals, Incorporated

Masataka Ooka

Nobuo Harui

Shigeru Komazaki

Hiroshi Kinoshita

Masaki Watanabe

Yuji Ohashi

Shinichi Kuwamura

Hajime Suganuma

Makoto Tsuboi

Goro Iwamura

Yoichi Murakami

Hidetoshi Konno

Hirofumi Takeda

Hiroo Tanaka

Satoshi Hiyoshi

Motoyasu Kunugiza

Kazuo Yamamura

Hiroshi Sakamoto

Eiichi Yoshikawa

Asako Oda

Hiroshi Matsuzawa

Yasutaka Nakama

Shinichi Kudo

Yasuhiro Yuki

Yaeko Okuda

Shinichi Kawamura

Hiroshi Ozawa

Koji Tokunaga

Shin-ichi Kudo

A water-dispersible polyisocyanate composition comprises a hydrophobic polyisocyanate (A) and a vinyl polymer (B) having a nonionic group and an isocyanate group, in which the hydrophobic polyisocyanate (A) can be dispersed in a water-based medium by the vinyl polymer (B) having a nonionic group and an isocyanate group. The water-dispersible polyisocyanate composition is produced by reacting a hydrophobic polyisocyanate with a vinyl polymer (b) having a nonionic group and an active hydrogen group-containing group capable of reacting with an isocyanate group at a molar ratio of the isocyanate group to the active hydrogen group-containing group of 3 to 350.

Water-dispersible polyisocyanate composition, production thereof, and water-based curable composition and application thereof

Water-dispersible polyisocyanate composition, process for its production, water-base curable composition and its application

An antifouling coating composition having an excellent coating film strength and also has markedly superior antifouling properties, and a novel resin which is useful as a matrix resin for the composition are provided. The antifouling coating composition comprises a vinyl polymer (A) having, as a repeating unit, a structural unit (a) represented by the following formula (1):(in the formula (1), Xand Xeach independently represents an ester bond or a carbonyl group; Rrepresents an ethylene structure which forms a covalent bond with the carbonyl carbon atom and Xin the formula (1) at the same or adjacent carbon atom; Rrepresents a gem-alkylene group, a vic-alkylene group, an arylmethylidene group or an arylethylene group; and Rand Rrepresent an alkyl group or an aryl group, or a hydrocarbon group having a carbonyl group, an ether bond or an ester bond) and an antifouling agent (B).

Antifouling coating composition and novel resin

A curable composition useful in water-based paints comprises a water-based product obtained by dispersing or dissolving in water a vinyl polymer (II) containing tertiary amino and/or acidic groups which have been neutralized by an acidic or basic compound, an epoxy and hydrolysable silyl groups-containing compound (B), and a hydrolysable silyl and/or silanol groups-containing compound (F).

Water-based neutralized tertiary amino and/or acidic vinyl polymer with epoxy and hydrolyzable silyl compound

A water-base resin has both excellent storage stability and excellent curability at room temperature, the water base resin being obtained by mixing a composite resin (C) and a polysiloxane (D), bringing about a condensation reaction partially between them if necessary, and thereafter dispersing or dissolving the resulting mixture or partially condensed product into a water-base medium, wherein the composite resin (C) comprises a polysiloxane segment (A) and a polymer segment (B), the polysiloxane segment (A) having at least one silicon atom selected from the group consisting of a silicon atom bearing at least one organic group having a total carbon number of at least 3 together with at least one hydrolyzable group and/or at least one hydroxyl group, a silicon atom bearing one hydrolyzable group or one hydroxyl group together with two groups selected from the group consisting of methyl groups and ethyl groups, and a silicon atom bearing at least one triorganosiloxy group together with at least one hydrolyzable group and/or at least one hydroxyl group, and the polymer segment (B) having at least one type of hydrophilic group selected from the group consisting of an anionic group, a cationic group, and a non-ionic group, and wherein the polysiloxane (D) has a hydrolyzable group bonded to a silicon atom and/or a hydroxyl group bonded to a silicon atom, the polysiloxane (D) having a structure represented by the following structural formula (S-I) as an essential structural unit:

Process for preparing aqueous resin, aqueous curable resin composition, aqueous paint, and method for formation of coating therefrom

The present invention proposes highly practical curable resin compositions for use in water based paints, which contain no, or much less organic solvent when compared with current organic solvent based paints, and which produce painted surfaces which have excellent curability and weather resistant properties, as well as excellent resistance to solvents, chemicals and water. These curable resin compositions include a compound combining both epoxy and hydrolyzable silyl groups, and a water based product obtained by dispersing or dissolving in water, a tertiary amino vinyl polymer, a vinyl polymer containing both tertiary amino and acidic groups, or an acidic vinyl polymer, which has been either partially or completely neutralized by an acidic or basic compound.

Curable resin composition for use in water based paint

A curable resin composition of use in water-based paints comprises a water-based product obtained by dispersing or dissolving in water a vinyl polymer (II) containing tertiary amino groups, acidic groups, or both tertiary amino and acidic groups which has been either partially or completely neutralized by an acidic or basic compound, an epoxy and hydrolyzable silyl groups-containing compound (B), and a composition further containing a hydrolyzable silyl and/or silanol groups-containing compound (F).

Water-based neutralized tertiary amino and/or acidic vinyl polymer and

Curable resin compositions

Curable composition and method for forming a film using the same

A coating resin composition comprising (I) a vinyl polymer obtained by polymerizing (A) 1 to 100% by weight of a vinyl monomer having at least one unsaturated double bond and at least one siloxy group per molecule and (B) 99 to 0% by weight of a copolymerizable vinyl monomer other than (A) in the presence of a radical generator and (II) a curing agent having reactivity with the hydroxyl groups generated from the polymer (I), and optionally (III) a siloxy group-dissociating catalyst.

Coating resin composition

A magnetic paint and objects coated with same are disclosed, where the magnetic paint is characterized by comprising, as its essential components, a block copolymer and magnetic powder, said block copolymer having polyurethane and vinyl polymer segments. The magnetic paint of the present invention exhibits good dispersability of the magnetic powder, and good surface smoothness, durability, and wear resistance of the magnetic recording medium. Objects which may be appropriately coated with the magnetic paint of the present invention include high-quality magnetic recording media, such as magnetic tapes, magnetic cards, prepaid cards, magnetic disks and so on.

Magnetic paint and magnetic recording medium

The methacrylic ester polymers produced according to this invention are uniquely distinguished from the radically prepared polymers of similar composition by the fact that both polymers produced: by anionic living polymerization and by deactivating the active terminals of anionic living polymers; contain acetal and/or ketal groups as the blocked hydroxyl groups and have narrow molecular weight distribution. Hydroxyl group-containing methacrylic acid ester polymers are produced by hydrolysis of the above-mentioned polymers. The anionic living polymers are produced in high yields by anionically polymerizing methacrylic acid esters containing an acetal or ketal group in the presence of initiators such as alkaline metal alkoxides. The polymers of the present invention can be used in various fields of applications such as coatings and adhesives. The polymers of the present invention yield curable high solids compositions.

Anionic living polymers, their derivatives and composition comprising

An ordinary temperature-curable resin composition comprising (A) a hydrolyzable silyl group-containing fluoroolefin copolymer obtained by polymerizing a monomeric mixture comprising a fluoroolefin as an essential component in the presence of a hydrolyzable silyl group-containing compound, (B) a curing catalyst, and (C) an organic solvent.

Resin composition

A room temperature-curable resin composition consisting essentially of (A) a vinyl polymer containing a basic nitrogen atom and (B) a compound containing both an epoxy group and a hydrolyzable silyl group in each molecule. The composition is especially useful as a paint, an adhesive, or a sealing agent.

Room-temperature-curable resin composition

Growing community of inventors

Ikoma, Japan

Masataka Ooka