Shin-etsu Chemical Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

The Procter Gamble Company

Takato Sakurai

Akihiro Kobayashi

Hideto Kato

Chinami Matsui

Rajan Keshav Panandiker

Bernard William Kluesener

Takanobu Takeda

Shunji Aoki

Sherri Lynn Randall

Rebecca Ann Langevin

Hiroyuki Moriya

Michihiro Sugo

Hiroyuki Yasuda

Shinji Irifune

Shohei Tagami

Shogo Kamenoue

Yasuaki Kodama

Kazuhito Yaeda

Masayuki Nagasawa

Yoichiro Yoshii

Tomoyuki Nakano

Kazuyuki Takewaki

Yosuke Kishino

Hideo Kato

An automotive engine coolant composition includes: a non-silicone surfactant; an anti-foaming agent containing a mineral oil and silica; and a base, in which the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm/s or more at 25&#xb0; C. and 2.0 mm/s or less at 100&#xb0; C., and with respect to 100 parts by mass of the coolant composition, a content of the mineral oil is 0.01 to 0.4 parts by mass and a content of the silica is 0.003 to 0.1 parts by mass.

Automotive engine coolant composition, automotive engine concentrated coolant composition, and method of operating internal combustion engine

The present invention relates to a defoamer oil compound that contains an organopolysiloxane (A), a fine silica powder (B), and a group (C) that is represented by the organopolysiloxanes of formulas (I) and/or (II) (in the formulas, c, d, and e are each an integer of 0 or more, and at least one of Xto Xis the group represented by formula (i)). The component (C) is used as a surface treatment agent for the component (B). The present invention makes it possible to obtain a silicone-based defoamer composition that imparts good initial defoaming properties even in an alkaline foaming liquid, that exhibits very little loss in performance over time, and that has excellent defoaming performance.

Defoamer oil compound, production method therefor, and defoamer composition

Provided are a Gemini-type alkyl-polyoxyalkylene-modified silicone suitable for use in preparing a silicone emulsion; a production method of thereof; and a defoaming agent composition containing such Gemini-type alkyl-polyoxyalkylene-modified silicone. The Gemini-type alkyl-polyoxyalkylene-modified silicone is expressed by the following general formula (A): wherein each of R, R, R, R, Rand Rrepresents an alkyl group or the like; n represents an integer of 0 to 300; and (B) represents a group expressed by the following general formula (1) or general formula (2): wherein each of Rand X represents a hydrocarbon group; Rrepresents a hydrogen atom, a hydrocarbon group, a formyl group or an acyl group; and a and b represent numbers satisfying 2&#x2266;a&#x2266;200 and 0&#x2266;b&#x2266;200, provided that a+b=2 to 200.

Defoaming agent composition

The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.

Anti-foam compositions comprising an organomodified silicone comprising one or more 2-phenylpropylmethyl moieties

Anti-foam compositions

An oil compound used for defoaming includes (A) a substantially hydrophobic organopolysiloxane having a viscosity of 10 to 100,000 mm/second at 25&#xb0; C., and (B) finely divided silica that has undergone surface hydrophobization treatment, wherein when an insoluble matter is collected from the oil compound by using hexane and the spectra of the insoluble matter are measured bySi-CP/MAS-NMR, the peaks of the silica due to the SiO(Q) units on the silica surface are such that a ratio [(Q2+Q3)/Q4] between a total area (Q2+Q3) wherein Q2 is a peak area of a silicon atom having two unreacted silanol groups and Q3 is a peak area of a silicon atom having one unreacted silanol group and an area Q4 wherein Q4 is a peak area of a silicon atom having no unreacted silanol group is at 70/30 to 20/80.

Oil compound and defoamer composition

Disclosed is a powder antifoaming agent containing: (A) a hydrophobic organopolysiloxane that has a viscosity at 25&#xb0; C. of 10-100,000 mm2/s; (B) a fine silica powder; (C) a surfactant; and (D) a water-soluble encapsulating agent that is in a solid state at 25&#xb0; C. This powder antifoaming agent is characterized by being obtained by spray drying a dispersion liquid that is obtained by dispersing a silicone oil compound, which is obtained by mixing the component (A) and the component (B), and the component (D) in water in the presence of the component (C), and is also characterized in that the silicone oil compound is encapsulated by the component (D) that serves as an outer shell. Since the present powder antifoaming agent does not contain water by being produced by a spray drying method, the powder antifoaming agent is free from problems of emulsion antifoaming agents such as separation and putrefaction.

Powder antifoaming agent and method for producing same

Provided is a silphenylene-containing photocurable composition including: (A) a specific silphenylene having both terminals modified with alicyclic epoxy groups, and (C) a photoacid generator that generates acid upon irradiation with light having a wavelength of 240 to 500 nm. Also provided is a pattern formation method including: (i) forming a film of the photocurable composition on a substrate, (ii) exposing the film through a photomask with light having a wavelength of 240 to 500 nm, and if necessary, performing heating following the exposure, and (iii) developing the film in a developing liquid, and if necessary, performing post-curing at a temperature within a range from 120 to 300&#xb0; C. following the developing. Further provided is an optical semiconductor element obtained by performing pattern formation using the method. The composition is capable of very fine pattern formation across a broad range of wavelengths, and following pattern formation, yields a film that exhibits a high degree of transparency and superior light resistance. The composition may also include: (B) a specific epoxy group-containing organosilicon compound.

Silphenylene-containing photocurable composition, pattern formation method using same, and optical semiconductor element obtained using the method

There is disclosed a silphenylene skeleton-containing silicone type polymer comprising a repeating unit represented by the following general formula (1) and having a weight average molecular weight of 5,000 to 40,000. There can be a novel silphenylene skeleton-containing silicone type polymer which enables to satisfy both chemical resistance and adhesiveness to a substrate and can be used as a material for a thermosetting resin for forming coatings for protecting substrates, circuits, and interconnections; and a method for manufacturing the same. 

Silphenylene skeleton-containing silicone type polymer and method for manufacturing the same

Bisphenol derivatives having both alcoholic hydroxyl and allyl groups are novel and useful as reagents for modifying organic resins and silicone resins.

Alcoholic hydroxyl-containing compounds and making method

Growing community of inventors

Annaka, Japan

Takato Sakurai