Shin-etsu Chemical Co., Ltd.

Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Nissin Chemical Industry Co., Ltd.

Sunline Co., Ltd.

Toshiaki Ihara

Ataru Kobayashi

Akira Yamamoto

Masaki Tanaka

Kazuyuki Matsumura

Ichiro Ono

Norio Nakamura

Shunji Aoki

Shinji Irifune

Kenji Yamamoto

Masahiko Minemura

Harukazu Okuda

Hiroshi Nakayama

Tsutomu Nakajima

Takashi Aketa

Ken Nakayama

Kenji Tanaka

Hidenobu Tsutsumi

Ichiro Tanii

Yoshitaka Koshiro

Junji Nakazaki

Shigemi Suzuki

Manabu Hamamoto

Yoshio Fujiwara

Sinobu Sato

In the present invention, compounding an addition-reaction-curable organopolysiloxane composition with a specific amount of an organopolysiloxane compound that has three or more (meth)acryl groups in the molecule and a weight-average molecular weight of 1,000 or greater yields an organopolysiloxane composition for use in a release paper or release film in which addition reactions can occur using a small amount of platinum family metal catalyst, cured films can be formed having a peeling strength approximating levels encountered in the past, and addition-reaction-prompted curing will proceed even on a base material containing a catalyst-poisoning component.

Organopolysiloxane composition for use in release paper or release film

The object of the present invention is to provide a silicone composition which provides a release coating having excellent adhesion to a substrate, in particular a plastic film substrate, such as a polyester film. Further, an object of the present invention is to provide a release sheet having a cured coating of the silicon composition. It is also an object of the present invention to provide a silicone composition which has improved storage stability and does not cause separation of the functional compound during long-term storage or transportation. The present invention provides a silicone composition comprising the following components (A) to (C):

Silicone composition, a release sheet, a release film and methods for preparing the release sheet and the release film

Provided is a silicone composition having components (A) to (E):100 parts by mass of (A) a linear, branched, or network organopolysiloxane having a vinyl value of 0.01 mol/100 g or more and 0.04 mol/100 g or less and a viscosity of 100 mm/sec or more and 500 mm/sec or less at 25&#xb0; C., wherein each of terminals of the organopolysiloxane has one or more alkenyl groups; 0.01 to 3 parts by mass of (B) a linear, branched, or network organopolysiloxane having a vinyl value of 0.2 mol/100 g or more and 1.2 mol/100 g or less and a viscosity of 2 mm/sec or more and 60 mm/sec or less at 25&#xb0; C., wherein each of terminals of the organopolysiloxane has one or more alkenyl groups; (C) an organohydrogenpolysiloxane having an amount of 1 mol/100 g or more and 2 mol/100 g or less of an SiH group, wherein a ratio of the number of the SiH group in component (C) to a total number of the alkenyl groups in components (A) and (B) is 1 to 5; 0.01 to 10 parts by mass of (D) an addition-reaction control agent, relative to total 100 parts by mass of components (A), (B), and (C); and a catalytic amount of (E) a platinum group metal catalyst.

Curable silicone release composition

An organopolysiloxane composition obtained by dissolving in a solvent an organopolysiloxane crosslinked product obtained by repeating one or more times a process of again introducing an organopolysiloxane and an organohydrogenpolysiloxane to a product, obtained by conducting an addition reaction of an organopolysiloxane of a specific structure and an organohydrogenpolysiloxane of a specific structure using a platinum group metal-based compound in 10-50 times the total mass of these polysiloxanes, and conducting an addition reaction using a platinum group metal-based compound.

Organopolysiloxane composition and method for producing same, and silicone composition for mist suppressor as well as solvent-free release paper or release film

Provided are a siloxane composition, said siloxane composition showing physical properties between a dimethyl polysiloxane oil and a gelatinous crosslinked siloxane and being fluid or becoming fluid when dissolved in a solvent, and a method for producing the same. The siloxane composition, which is obtained by subjecting specific starting organopolysiloxane materials to an addition reaction in a large excess (i.e., 8 times by mass or greater as much as the starting materials) of a solvent, comprises a crosslinked organopolysiloxane, said crosslinked organopolysiloxane having a weight-average molecular weight of 5,000-300,000,000 and containing 0.1-50 mol of silethylene bond per 1,000 mol of siloxane unit, dissolved in the solvent.

Siloxane composition and method for producing same

Provided are: a crosslinked organopolysiloxane which has properties intermediate between a dimethylpolysiloxane oil and a gel-like crosslinked siloxane; and a method for producing the crosslinked organopolysiloxane. An oil-like organopolysiloxane which is produced by: adding a compound having a siloxane unit represented by formula (3) to a gel-like silicone, wherein the gel-like silicone is produced by a hydrosilylation reaction of an organopolysiloxane having an alkenyl group with an organohydrogenpolysiloxane having a hydrogen atom bonded to a silicon atom in the presence of a platinum-group metal catalyst; and then equilibrating the resultant product with an acid or alkali catalyst.RSiO&#x2003;&#x2003;(3)(Rrepresents a group selected from a monovalent hydrocarbon group having no aliphatic unsaturated bond and an alkenyl group represented by the formula: &#x2014;(CH)&#x2014;CH&#x2550;CH(wherein a represents a numerical value of 0 to 6), and the average polymerization degree of formula (3) is 3 to 2,000).

Crosslinked organopolysiloxane and method for producing same, mist suppressant, and solvent-free silicone composition for release paper

Provided are: a crosslinked organopolysiloxane which has properties intermediate between a dimethylpolysiloxane oil and a gel-like crosslinked siloxane; and a method for producing the crosslinked organopolysiloxane. An oil-like organopolysiloxane which is produced by: adding a compound having a siloxane unit represented by formula (3) to a gel-like silicone, wherein the gel-like silicone is produced by a hydrosilylation reaction of an organopolysiloxane having an alkenyl group with an organohydrogenpolysiloxane having a hydrogen atom bonded to a silicon atom in the presence of a platinum-group metal catalyst; and then equilibrating the resultant product with an acid or alkali catalyst.RSiO&#x2003;&#x2003;(3)(Rrepresents a group selected from a monovalent hydrocarbon group having no aliphatic unsaturated bond and an alkenyl group represented by the formula: &#x2014;(CH)&#x2014;CH&#x2550;CH(wherein a represents a numerical value of 0 to 6), and the average polymerization degree of formula (3) is 3 to 2,000.)

The present invention relates to an emulsion-based high release additive for a release sheet, the additive being characterized by being obtained by dispersing in water a condensation product (A) obtained by subjecting the following to a dehydration condensation reaction: (A-1) a polydiorganosiloxane which has an average degree of polymerization of 100-300,000 and which has one or more hydroxyl groups or hydrolyzable groups per molecule; and (A-2) a polyorganosiloxane resin, which contains (SiO) units and (RSiO) units (in the formulae, the R groups each represent independently a monovalent hydrocarbon group having 1-12 carbon atoms and not having an aliphatic unsaturated bond or an alkenyl group having 2-6 carbon atoms) as primary components, in which the molar ratio of (RSiO) units relative to (SiO) units is 0.6-1.2 and in which the total content of hydroxyl groups and hydrolyzable groups is not lower than 2.1 mass % and lower than 10.0 mass %. The present invention can obtain a silicone cured coating film having a high release force by adding the additive to a curable composition for a release sheet such as a release paper or release film, coating the same on a variety of base materials and curing.

Emulsion-based high release additive for release sheet, emulsion composition for release sheet, and mold release sheet

A heavy release additive for a release sheet comprises a condensation reaction product of dehydrative condensation reaction between (A) a polydiorganosiloxane of average polymerization degree of 500 to 10,000 and has at least one hydroxy or hydrolysable group per molecule and (B) a polyorganosiloxane resin composed of a (SiO) unit and a (RSiO) unit (wherein R's independently represent a Cmonovalent hydrocarbon group or a Calkenyl group each having no aliphatic unsaturated bond), has a ratio of the (RSiO) unit to the (SiO) unit of 0.6 to 1.2 by mole, and contains the hydroxy group and the hydrolysable group in the total content of 2.1 mass % or more and less than 10.0 mass %. The heavy release additive can have the effect of achieving an extremely great peel force compared with cases in which no additive is added.

Heavy release additive for release sheet, polyorganosiloxane composition for release sheet, and release sheet

A polyurethane resin composition comprising (A) a polycarbonate base polyurethane resin, (B) a P and N-containing non-halogen flame retardant, (C) a polyhydric alcohol, and (D) a silicone containing at least two reactive functional groups in the molecule obviates the problems of safety, environment and price and has sufficient flame retardance and improved mechanical properties such as tensile strength and elongation.

Flame retardant polyurethane resin composition and making method

A fishing line is produced by forming a monofilament by subjecting a resin composition (C) containing 90 to 99.3% by weight of a polyamide resin (A) and 0.7 to 10% by weight of a silicone compound (B) having a number average molecular weight of 100,000 to 2,000,000 to melt-spinning and then drawing. This method can provide a fishing line which is excellent in abrasion resistance and also excellent in visibility. In this method, it is preferable to conduct melt-kneading of a part of the polyamide resin (A) with the silicone compound (B) in advance, adding of the residual polyamide resin (A) and further melt-kneading, subsequent melt-spinning, and drawing at a draw ratio of from 4 to 7.

Fishing line and method for production thereof

A method for preparing a vehicle interior material comprises the steps of feeding 100 parts by weight of phosphorus and nitrogen-containing non-halogen flame retardant particles and 0.1 to 20 parts by weight of hydrophobic inorganic oxide fine particles having hydrophobic groups and having an average particle size of 0.001 to 5 &#x3bc;m to a mixer equipped with a high-speed agitation means having a revolution capability of about 100 to 5,000 rpm, agitating and mixing the phosphorus and nitrogen-containing non-halogen flame retardant particles and the hydrophobic inorganic oxide fine particles to produce the phosphorus and nitrogen-containing non-halogen flame retardant particles coated with the hydrophobic inorganic oxide fine particles, mixing 100 parts by weight as solids of a synthetic resin emulsion and 1 to 300 parts by weight of the phosphorus and nitrogen-containing non-halogen flame retardant particles coated with the hydrophobic inorganic oxide fine particles to produce a coating composition, coating the coating composition onto the vehicle interior material, and drying the coated vehicle interior material.

Method for preparing a vehicle interior material

Provided by the invention is a non-halogen flame-retardant thermoplastic resin composition not requiring crosslinking with a peroxide, having excellent in moldability, and moreover, having high flame-retardancy to pass the test for V-0 grade of the UL-94. standards The non-halogen flame-retardant thermoplastic resin composition comprises, as a uniform blend: (A) 100 parts by mass of a thermoplastic resin other than polycarbonate and polyphenylene ether resins, (B) 10 to 300 parts by mass of an inorganic powder, (C) 1 to 50 parts by mass of an organopolysiloxane having a specified structure, and (D) 0.01 to 10 parts by mass of an organic compound having a specified structure.

Non-halogen flame-retardant resin composition

A flame retardant additive comprises (A) a gassing agent which is a compound containing both phosphorus and nitrogen, typically ammonium polyphosphate, which is surface coated with (B) a silicone-base water repellent treating agent comprising a co-hydrolytic condensate obtained through co-hydrolytic condensation of (i) an organosilicon compound and (ii) an amino group-containing alkoxysilane or a partial hydrolyzate thereof in the presence of an organic or inorganic acid. The additive is improved in moisture absorption resistance and dispersion and suited for use in resins or elastomers.

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Annaka, Japan

Toshiaki Ihara