Dow Corning Toray Silicone Company Limited

Masayuki Hayashi

Hideki Kobayashi

Tadashi Okawa

Makoto Iwai

An organopolysiloxane-modified polysaccharide prepared by esterification reacting (A) an organopolysiloxane having residual carboxylic anhydride groups and (B) a polysaccharide having hydroxyl groups, wherein the organopolysiloxane is bonded to the polysaccharide through half ester groups, and a process for the preparation of organopolysiloxane-modified polysaccharide, in which component (A) and component (B) are subjected to an esterification reaction in the presence of (C) a non-protonic polar solvent. The organopolysiloxane-modified polysaccharide comprising polysaccharide and organopolysiloxane bonded thereto through half ester groups is novel. The process for the preparation of organopolysiloxane-modified polysaccharide permits introduction of organopolysiloxane into polysaccharide at a high introduction ratio.

Organopolysiloxane-modified polysaccharide and process for producing the same

A vibration damping silicone composition with excellent long term storage stability and vibration damping ability contains as components (A) a silicone oil, (B) hollow particles of an organic resin having an inorganic material powder supported on its surfaces, and (C) a solid inorganic material powder.

Vibration damping silicone composition

A vibration damping silicone composition of superior vibration damping properties and superior long-term storage stability contains (A) a silicone oil, and (B) a silicone resin powder. Component (B) is a solid at room temperature, and has a volatile component content of not more than one percent by weight, after being heated for two hours at 200&deg; C.

A vibration damping silicone composition having excellent vibration damping ability and good storage stability contains (A) a silicone oil, (B) calcium carbonate powder, (C) a solid inorganic material powder other than powder (B) having a mean particle size of 20-200 &mgr;m, and (D) a fatty acid or fatty acid derivative.

A vibration damping silicone composition that exhibits an excellent vibration damping performance and long-term storage stability comprising a silicone oil, a silicone resin powder that is solid at room temperature, and a surface-hydrophobic silica powder having a pH of greater than 6 but less than 9. The composition is particularly useful in shock absorbers for electronic and/or electrical equipment such as compact disk players, compact disk changers, mini-disk players, and car navigation devices.

A high energy radiation-curable composition comprising a partial hydrolysis-condensation product of (A) a mixture of an alkoxy containing organopolysiloxane and alkoxysilanes and (B) a multifunctional acrylate, and a resin molding coated with the composition. The composition forms coatings of superior curability, water repellency, water resistance, oil repellency, transparency, flexibility, and scratch resistance, especially on resin moldings.

High energy radiation-curable composition and resin molding

A vibration damping silicone composition of superior long term storage stability and vibration damping properties contains (A) a silicone oil, (B) a heavy calcium carbonate powder, (C) a light calcium carbonate powder, and (D) a fatty acid or a fatty acid derivative.

The invention relates to a gas barrier composition as well as to composite structures having at least one surface of a molded resin coated with the composition, said composition comprising:

Gas barrier composition and molded resin

This invention relates to treating agents, glass fiber substrates treated with such agents, and the use of such treated glass fiber substrates in molded, glass fiber reinforced resins that are suited to copper clad laminates, composite base materials, printed wiring boards such as mass lamination boards, and, in particular, multilayer printed wiring boards.

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Chiba Prefecture, Japan

Masayuki Hayashi