Shin-Etsu Chemical Co., Ltd.

Yoshihito Osawa

Satoshi Kuwata

Akira Yamamoto

Kenji Yamamoto

Yasunori Watanabe

Masaaki Yamaya

Tomoyuki Goto

Naoki Omura

Hiroshi Ohashi

Yoshinobu Takahashi

Yukio Morimoto

Sachiko Nezu

The present invention aims to provide a (meth)acrylic-modified silicone macromonomer, which may be used as a raw material for a (meth)acrylic copolymer capable of forming a coating having excellent antifouling properties and surface smoothness. A (meth)acrylic-modified silicone macromonomer of formula (b1) is provided, which has 1 to 80 branches attached to a linear polysiloxane backbone and the branch has a (poly)oxyalkylene structure of the formula &#x2014;(CHO)&#x2014; and a (meth)acryloyl group at a terminal. The (meth)acrylic-modified silicone macromonomer is a raw material for a polymer used in an antifouling paint.

(Meth)acrylic-modified silicone macromonomer

An organopolysiloxane containing at least two silicon-bonded hydroxyl groups, the reaction product of an amino-containing organoalkoxysilane with a dicarboxylic anhydride, and an organopolysiloxane containing long-chain alkyl and alkoxy groups, but free of hydroxyl groups are emulsified and dispersed in water in the presence of a surfactant to form a coating emulsion composition.

Coating emulsion composition, and water/oil-repellent paper and making method

An organosilicone emulsion composition comprising (A) 100 parts by weight of an organopolysiloxane having a viscosity of at least 500 Pa&#xb7;s at 25&#xb0; C., (B) 1-50 parts by weight of a polyether-containing organosiloxysilicate, (C) 1-50 parts by weight of a nonionic surfactant, and (D) 10-1,000 parts by weight of water is stable.

Organosilicone emulsion composition

An emulsion coating agent composition containing: (A) one hundred parts by weight of an organosilicone resin obtained by hydrolysis and/or condensation of a mixture of a silicone oil having both reactive terminals represented by X&#x2014;[RSi&#x2014;O&#x2014;]&#x2014;RSi&#x2014;X (R is selected from monovalent hydrocarbon groups containing one to twenty carbon atoms and/or aryl groups, and each R is same or different groups, X is a hydrolyzable group and/or an OH group, and m is a natural number from three to one hundred), a silane and/or a silicone in which the organosilicone resin containing a continuous linear chain structure indicated by &#x2014;[RSi&#x2014;O&#x2014;]&#x2014; (R and m are both identical to the R and m in the formula showing the silicone oil with both reactive terminals), and 5 mole % to 60 mole % of the total Si atoms in the organosilicone resin form the chain-like continuous structure; (B) one part by weight to fifty parts by weight of an emulsifier; and (C) twenty-five parts by weight to two thousand parts by weight of water.

Emulsion coating agent composition and coated products thereof

An organopolysiloxane emulsion composition comprising (A-1) the reaction product of a hydroxy-terminated organopolysiloxane with an organopolysiloxane comprising trialkylsiloxy and silicate units and having silanol groups and (A-2) silica, or (A-3) the reaction product of a hydroxy-terminated organopolysiloxane with an organopolysiloxane comprising trialkylsiloxy and silicate units and having silanol groups and silica having silanol groups on its surface, (B) an emulsifier, and (C) water remains fully stable and can form an organopolysiloxane film having a rubber strength simply by drying.

Film-forming organopolysiloxane emulsion composition

A crosslinkable organopolysiloxane composition comprising (A) a keto-containing organopolysiloxane and (B) a compound having at least two hydrazido and/or semicarbazido groups cures at room temperature into a film having safety and weathering resistance.

Crosslinkable organopolysiloxane compositions

An organosilicone resin emulsion composition comprising (A) an organosilicone resin having the compositional formula: [RSiO][RSiO]wherein R is a monovalent organic group, m is from 0.2 to 1.0, and n is from 0 to 0.8, (B) a water-miscible organic solvent having an SP value of 8.0-11.0, (C) an emulsifier, and (D) water, the composition being substantially free of an organic solvent other than component (B), has good water resistance, weather resistance, and stability and is free of environmental problems. An article having a coating of the composition formed thereon is also provided.

Organosilicone resin emulsion composition and article having coating thereof

A high polymeric organosiloxane cationic emulsion composition comprising (A) a polydiorganosiloxane of formula: HO&#x2014;[RSiO]&#x2014;H wherein R is an organic group and n is a number to give a viscosity of at least 300 Pa-s at 25&#xb0; C., (B) a cationic surfactant of formula: Q(CH)N&#xb7;Xwherein Q is an organic group and X is halogen or carboxyl, and (C) water is fully stable. It is prepared by dispersing a corresponding organosiloxane and the cationic surfactant in water to form an emulsion, polymerizing in the presence of an alkali catalyst at 0-90&#xb0; C. for 10-150 hours, and neutralizing with an acidic compound.

Cationic emulsion composition of high polymeric organosiloxane and preparation thereof

A branched organopolysiloxane is prepared by polymerizing an organopolysiloxane mixture of a branch unit-containing organopolysiloxane and a low molecular weight organopolysiloxane in the presence of an acidic or basic catalyst, or by adding a surfactant to the organopolysiloxane mixture, dispersing it in water to form an emulsion, and polymerizing the emulsion.

Method for preparing branched organopolysiloxane

A novel silicone-based coating composition in the form of an aqueous emulsion is proposed which is capable of giving a rubber-like cured coating film of excellent mechanical strengths and flexibility on the surface of various substrate materials exhibiting high adhesive bonding thereto. The composition comprises:

Silicone-based aqueous emulsion composition

Provided are an organopolysiloxane represented by the following formula (I), which has at least one norbornane skeleton and at least one amino group, and a fiber finishing composition containing as a main component the aforesaid organopolysiloxane: ##STR1## wherein R groups are the same or different, and each of them represents an alkyl group containing 1 to 20 carbon atoms or an aryl group containing 6 to 20 carbon atoms; X is a group represented by the following formula (II); A groups are the same or different, and each of them represents an alkoxy group containing 1 to 10 carbon atoms, a hydroxyl group, R or X; m is from 10 to 10,000; and n is from 0 to 500, wherein when n is 0 at least one A group represents X; ##STR2## wherein Q.sup.1 and Q.sup.2 are the same or different, and each represents a divalent organic group containing 1 to 20 carbon atoms.

Organopolysiloxane and fiber finishing composition containing the same

Disclosed is a method of producing an epoxy-modified silicone, which comprises causing a reaction between (A) 100 parts of an ethylenic unsaturated group-containing epoxide and (B) from 50 to 40,000 parts of an organohydrogenpolysiloxane and/or an organohydrogensilane in the presence of (C) from 0.00001 to 0.5 part by weight, on a platinum basis, of a platinum compound as catalyst and (D) from 0.1 to 1,000 parts by weight of an aliphatic alcohol containing from 1 to 10 carbon atoms.

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Annaka, Japan

Yoshihito Osawa