495 results about "Methyl polysiloxane" patented technology

A heat-conductive silicone rubber composition is provided. This composition comprises (A) an organopolysiloxane with an average of at least 0.1 alkenyl groups bonded to silicon atoms within each molecule, (B) an organopolysiloxane with an average of at least 2 hydrogen atoms bonded to silicon atoms within each molecule, (C) a heat-conductive filler, (D) a platinum catalyst, and (E) a methylpolysiloxane with a hydrolyzable group and a vinyl group, as represented by a general formula shown below. This composition displays superior molding workability and adhesion, even if a large quantity of a heat-conductive filler is added to the composition

The invention relates to a preparation method of a organic-inorganic porous composite material for absorbing carbon dioxide, which comprises the following steps: adding hydrogen-containing methyl polysiloxane into anhydrous ethanol, adding alkaline solution, mixing for 20-24 hours, adding deionized water into the solution, mixing for 0.5-5 hour(s), adding ethyl orthosilicate, mixing for 1-6 hour(s) to obtaining Solution A, dissolving organic amine into ethanol, mixing for 1-3 hour(s) to obtaining Solution B, adding the Solution B into the Solution A, mixing 3-5 hours, keeping static and aging for 3-5 days to obtain gel, and drying the gel for 24-30 hours at the temperature of 80-100 DEG C to remove ethanol in the system, thereby obtaining the organic-inorganic porous composite material. The invention has the advantages of low desorption temperature and high adsorption capacity. Simultaneously, the invention needs no template removing agent, thereby saving the cost and achieving good thermal stability.

An object of the present invention is to provide an electrophotographic photoconductor having an extremely low increase in friction coefficient and wear, while also having superior cleanability even after long-term or large-volume printing, and to provide an electrophotographic apparatus for forming an image using a polymerization toner without providing a unit for externally supplying a lubricant to a photoconductor. Namely, the present invention provides an electrophotographic photoconductor having a photosensitive layer and a crosslinked resin surface layer over a conductive substrate, wherein the crosslinked resin surface layer at least contains trimethylolpropane triacrylate, a dimethylpolysiloxane having a radically polymerizable functional group, and lubricating fine particles.

A thermally conductive silicone grease composition comprising:(A) an organopolysiloxane having at least two alkenyl groups in one molecule and having a kinetic viscosity of 5,000 to 100,000 mm2 / s at 25° C.;(B) a hydrolyzable methylpolysiloxane having a trifunctional termination at one end and represented by the following general formula (2):wherein R2 represents an alkyl group having 1 to 6 carbon atoms and b is an integer of 5 to 100;(C) a thermally conductive filler having a thermal conductivity of at least 10 W / m·° C.;(D) an organohydrogenpolysiloxane containing from 2 to 5 hydrogen atoms in one molecule directly bound to silicon atoms (Si—H groups);(E) a bonding aid having a triazine ring and at least one alkenyl group in one molecule; and(F) a catalyst selected from the group consisting of platinum and platinum compounds.

The invention discloses a double-component silicone structural sealant for sealing insulating glass, and belongs to the technical field of sealants. The sealant provided by the invention comprises a component A and a component B, wherein the component A contains the following ingredients of: by weight, 100 parts of alpha-omega-dihydroxyl-terminated polysiloxane, 10-15 parts of alkyl-terminated dimethyl polysiloxane and 75-88 parts of a filler; the component B contains the following ingredients of: by weight, 50 parts of alkyl-terminated dimethyl polysiloxane, 8 parts of carbon black, 20 parts of an alkoxysilane crosslinking agent, 15.5 parts of a coupling agent, 1-1.5 parts of a catalyst and 0.05-1 part of an ultraviolet absorbent. The double-component silicone structural sealant has good aging resistance and bonding performance.

A metal particle dispersion structure characteristically comprising (B) 0.005 to 100 weight parts of metal nanoparticles dispersed in (A) 100 weight parts of polymerized polymer, wherein the metal nanoparticles are metal particles obtained by mixing (b1) organohydrogenpolysiloxane and (b2) at least one metal compound which is soluble in component (b3) to uniformity in (b3) cyclic or chain dimethylpolysiloxane or at least one organic solvent.

{Object} To provide an oil-in-water emulsified hair cosmetic of the present invention manifests good absorption and spreadability into the hair, doesn't cause dripping during use, and yet has an aesthetic appearance of transparent or semi-transparent gel despite the fact that it has a high mending effect and a rich sensation as is found in oil-based hair care agents.{Means to achieve the object} (a) Silicones chosen from high polymer silicone that is gum-like or has a viscosity of 1 million cs or higher, silicone with both ends hydroxy-modified, amino-modified silicone, ammonium-modified silicone, and polyalkylene glycol-modified silicone: 0.1-10 wt %, (b) Dimethylpolysiloxane having a viscosity of 100 cs or less: 0.5-79 wt %, (c) Polyhydric alcohol: 1-25 wt %, and (d) Hydrophilic surfactant: 1-10 wt % are blended in, the blend ratio of the oil phase is made to be 50-80 wt %, and the blend ratio (mass ratio) between (a) and (b) is made to be (a):(b)=1:5-1:100.[Selected drawings] None

The invention provides an antistatic surface protection film, the pollution to a pasted body is light, and the antistatic surface protection film is provided with excellent anti-stripping electrostatic properties without time dependent degradation. The antistatic surface protection film is formed in a way that a binder layer (2) composed of a binder composition is formed on one side of a base film (1) formed by a transparent resin, the binder composition comprises an acrylate-based polymer containing copolymers, (F) an isocyanate compound containing more than two functional groups, (G) a crosslinking accelerator and (H) a ketone-enol tautomer compound, a stripping agent layer (4) containing an antistatic agent is laminated on one side of a resin film (3) to form a stripping film (5), and the stripping film (5) is attached to the surface of the binder layer (2) through the stripping agent layer (4). The stripping agent layer (4) is formed by a resin composition, and the resin composition comprises a stripping agent taking dimethyl polysiloxane as the key component, a polysiloxane compound which is liquid under 20 DEG C and an antistatic agent, and the stripping electrostatic pressure of the binder layer (2) is lower than + / -0.6kV.

The invention discloses a reactive organosilicon waterproofing agent as well as a preparation method and an application thereof. The method comprises the following steps: selecting reactive MDTQ silicon resin as a base raw material, matching methyl polysiloxane containing a reactive silicon functional group or a modifier or a room-temperature curing catalyst in an organic solvent, and preparing the reactive organosilicon waterproofing agent by compounding chemical and physical methods. The organosilicon waterproofing agent can be sprayed on a to-be-waterproofed base body for waterproofing or can be added to a to-be-waterproofed organic material, so as to form a waterproof material with an interpenetrating network structure or a hard / soft block by cross-linking and solidification in the base material. According to the method, the functional assistants such as a cross-linking agent, graphite, metal powder, color paste, an enhancer, a high-temperature resistant assistant, a mildew preventive and a corrosion inhibitor can be selected and added according to the special requirements of users on the waterproofing agent; a plurality of methods such as spraying, brushing, rolling or soaking can be adopted to construct when the organosilicon waterproofing agent is applied; and the organosilicon waterproofing agent is cured at a room temperature after being constructed.

The invention provides a surface protective film which has low pollution on an adhered object , will not be degradated over time and has an excellent release static prevention property, and a optical component attached with the surface protection film. A binder layer (2) is formed on a single surface of a transparent substrate film, the surface protection film (10) with a release film is attached on the binder layer (2), the binder film (2) contains an antistatic agent, the release film (5) is formed by stacking a release agent layer (4) on the single surface layer of a resin film (3), and the release agent layer (4) contains a release agent using dimethyl polysiloxane as a main component, and a silicon compound which is a liquid under 20 DEG C. The binder layer (2) is formed by a (methyl) acrylic copolymer copolymerized with a compound with a polyoxyalkene group, or is formed by the (methyl) acrylic copolymer mixed with the compound with the polyoxyalkene group.

The invention relates to a low-diffusion polypropylene composition which comprises the following components in percentage by weight: 55-99.8 percent of polypropylene composite material and 0.2-5 percent of organopolysiloxane silicone oil, wherein the organopolysiloxane silicone oil comprises one or a plurality of hydrogen-type polysiloxane, hydroxyl polysiloxane, methyl polysiloxane, ethenyl polysiloxane, amino polysiloxane, epoxy polysiloxane and methoxyl polysiloxane silicone oil. A preparation method of the low-diffusion polypropylene composition comprises the following steps of: weighing the components of polypropylene, talcum powder, a toughening agent, an antioxidant, a light stabilizer and the organopolysiloxane silicone oil in percentage by weight; mixing the polypropylene, the toughening agent, the antioxidant, the light stabilizer and the organopolysiloxane silicone oil for 1-2 minutes in a high speed mixer firstly and then adding the talcum powder and mixing for 3-5 minutes; and extruding and pelletizing the mixed materials by using a double screw extruder, wherein the process conditions are that: the temperature of a first area is 200-210 DEG C, the temperature of a second area is 210-220 DEG C, the temperature of a third area is 210-220 DEG C and the temperature of a fourth area is 200-215 DEG C, the retention time is 1-2 minutes, and the pressure is 10-20MPa. The low-diffusion polypropylene composition has the advantages that: the organopolysiloxane silicone oil forms a layer of even film on the surface of the talcum powder, which can block up a TVOC (Total Volatile Organic Compound) of the polypropylene material so as to reduce the pollution.

The present invention is proposed is an oil-based white ink composition for ink jet recording, comprising a white pigment, a glycol ether dialkyl ether compound solvent, a polymeric dispersant, and a specific acrylic resin. The white pigment is formed of titanium oxide fine particles having an average particle diameter of not less than 0.15 μm and not more than 0.25 μm and coated with at least one of aluminum oxide and silicon oxide. The white pigment is further coated with not less than 0.01% by mass and not more than 2.5% by mass of at least one of an SiH-containing polysiloxane and dimethylpolysiloxane.

A method of forming an insulating film which includes the steps of: dissolving in a solvent a first and second polymer which each comprise methylpolysiloxane as the main component and one of which has a weight average molecular weight at least 10 times that of the other to thereby prepare a chemical solution; applying the chemical solution to a semiconductor substrate to form a coating film; and heat-treating the coating film to thereby form an organosilicon oxide film. The weight-average molecular weight of the first polymer is preferably at least 100 times that of the second polymer. Thus, an insulating organosilicon oxide film having a low dielectric constant and high cracking resistance is formed from a coating fluid.

To provide: a novel polyether-polysiloxane block copolymer composition having excellent foam stabilizing properties, homogeneity in a premixed solution, and stability, and also having excellent compatibility with various components; a method for preparing the copolymer composition; a foam stabilizer and the like including the copolymer composition; and a polyurethane foam. This polyether-polysiloxane block copolymer composition contains: (A) a polyether-polysiloxane block copolymer in which molecules have a structural unit represented by the following general formula (1), -[-SiR2O-(SiR2O)a-SiR2-CH2-CH(CH3)-CH2-O(CxH2xO)y-CH2-CH(CH3)-CH2-]n-, and the end group of which is an alkenyl group bonded to a polyether moiety; and (B) a liquid monool organic compound which is (B1) a glycol ether compound of low polymerization degree in which hydrogen at one end is substituted by a hydrocarbon group and which has a secondary alcoholic hydroxyl group at the other end thereof, or (B2) a higher alcohol compound having a branched alkyl group containing 12 or more carbon atoms, wherein the amount of dimethyl polysiloxane contained in the composition is less than the mass of component (A).

The preparation process of the metal sealing filling piece with the fluorine rubber coat used in gas engine is provided in invention. The coat is made up of the 100 parts of the 26 type fluorine raw rubber, 250-350 parts of the mixing solvent, the 25-35 parts of the carbon black, 1.5-3 parts of the KH-560 silane resin acceptor, 30-50 parts of the 3# vulcanized agent, 5-15 parts of the MgO, 3-7 parts of the phenyl-methyl polysiloxane resin and 3-7 parts of Supramoly. The advantage of the invention is: (1) the process batch formula is proper and the dope has good flow level; (2) it needn't the bottom coating; (3) it can use the flame plating or screen printing process to operate on the fluorine rubber.

A method of forming an insulating film which includes the steps of: dissolving in a solvent a first and second polymer which each comprise methylpolysiloxane as the main component and one of which has a weight average molecular weight at least 10 times that of the other to thereby prepare a chemical solution; applying the chemical solution to a semiconductor substrate to form a coating film; and heat-treating the coating film to thereby form an organosilicon oxide film. The weight-average molecular weight of the first polymer is preferably at least 100 times that of the second polymer. Thus, an insulating organosilicon oxide film having a low dielectric constant and high cracking resistance is formed from a coating fluid.

To provide an antistatic surface protective film causing little contamination on an adherend and having an excellent antistatic performance on peeling while preventing degradation with time. The antistatic surface protective film is produced successively through steps of: forming a pressure-sensitive adhesive layer 2 made of a pressure-sensitive adhesive composition comprising an acrylic polymer as a copolymer and containing (F) an isocyanate compound having two or more functional groups, (G) a crosslinking accelerator, and (H) a ketoenol tautomer, on one surface of a base film 1 made of a resin having transparency; and bonding a release film 5 including a release agent layer 4 containing an antistatic on one surface of a resin film 3 to the surface of the pressure-sensitive adhesive layer 2 via the release agent layer 4. The release agent layer 4 is formed from a resin composition comprising a release agent essentially comprising dimethyl polysiloxane, a silicone compound that is liquid at 20 DEG C, and the antistatic. The pressure-sensitive adhesive layer 2 shows an electrification voltage on peeling within +-0.6 kV.

The invention discloses a shampoo containing marine biological degerming components and a preparation method of the shampoo. The shampoo comprises the following components by weight percent: 2.0-4.0% of marine biological degerming agent, 8.0-14.0% of alkyl glycoside, 7.0-10% of cocamidopropyl betaine, 6.0-10.0% of coco fatty acid diethanol amide, 0.5-2.0% of alkyl dimethyl polysiloxane, 1.0-1.5% of sodium chloride, 1.0-1.5% of sodium citrate, 0-5.0% of essence, and the balance of water. The shampoo containing the marine biological degerming components has itch relieving and dandruff removal functions and further has the advantages that the shampoo has no stimulation and corrosion to hairs.

The invention provides a method for producing an antistatic surface protection film, and the antistatic surface protection film which produces less pollution on a bonded body, does not degrade gradually, and has an excellent anti-peeling static performance. The method produces the antistatic surface protection film (10) through the steps of forming a bonding agent layer (2) on a single surface of a substrate film (1) made of transparent resin, laminating a peeling agent layer (4) containing an antistatic agent on a single surface of a resin film (3) to form a peeling film (5), and bonding the peeling agent layer (4) onto the surface of the bonding agent layer (2), wherein the peeling agent layer (4) is composed of a peeling agent taking dimethyl polysiloxane as a main component, a polyorganosiloxane compound being liquid under 20 DEG C, and a resin composition of the antistatic agent.

The invention discloses BB cream containing nostoc sphaeroide extract. The BB cream containing nostoc sphaeroide is prepared from the following raw materials: nostoc sphaeroide extract, cetyl PEG / PPG-10 / 1 polydimethylsiloxane, PEG-10 polydimethylsiloxane, ethyl hexyl methoxycinnamate, isononyl isononanate, C12-15 cholesteryl benzoate, octyl methyl polysiloxane, tocopherol acetate, cyclopentasiloxane, glycerine, butanediol, sodium chloride, glycine betaine and essence, wherein water is taken as a solvent. The BB cream containing the nostoc sphaeroide extract can be used for hiding pores, improving skin colour, effectively covering facial defects, smoothening skin wrinkles, promoting synthesis of collagen and inhibiting production of melanin, so that skin shows beauty of naked makeup and is also brighter and tighter. The invention also provides a preparation method of the BB cream containing the nostoc sphaeroide extract. The preparation method of the BB cream containing the nostoc sphaeroide extract is simple and effective, and production cost can be reduced.

The invention relates to an organic silicon rubber for LED packaging. In order to solve the problems that during direct physical blending of POSS (polyhedral oligomeric silsesquioxane) with vinyl silicone oil and hydrogen containing silicone oil, POSS has poor compatibility with vinyl silicone oil and hydrogen containing silicone oil and is very easy to precipitate, so that the light transmittance and mechanical properties of the product can be affected, the invention provides a preparation method of a POSS skeleton containing vinyl silicone oil. The method includes: mixing POSS with one or two of dimethyl polysiloxane and methylphenyl polysiloxane at any proportion to obtain a mixture, in the presence of a catalyst, carrying out end-capping with a vinyl end-capping reagent, and performing a polymerization reaction to obtain the POSS skeleton containing vinyl silicone oil. The preparation method is simple. The invention also provides application of the POSS skeleton containing vinyl silicone oil in LED packaging materials.

The invention discloses a fireproof silicone foam material and a preparation method of the fireproof silicone foam material. The fireproof silicone foam material is composed of a component A and a component B, wherein the component A and the component B are mixed according to volume ratio of 1: 1 to generate foams after being cured at 15-40 DEG C; the component A is composed of hydroxyl-terminated polysiloxane, dyhydroxyl-terminated polysiloxane, amino-polysiloxane, dimethyl polysiloxane, hydrosilicone oil, reinforcing filler and fire retardant according to a certain proportion; the component B is composed of hydroxyl-terminated polysiloxane, dyhydroxyl-terminated polysiloxane, amino-polysiloxane, dimethyl polysiloxane, platinum group catalyst, fire retardant and black pigment according to a certain proportion. The fireproof silicone foam material not only has good flame retardation, but also has good mechanical property such as tensibility and compression elasticity, does not produce toxic gas when meeting fire, can be widely applied to plugging structures with high fireproof requirements such as mechanical pipes, cables and the like.

The invention discloses a carbon nanotube in situ reinforced LED packaging silica gel and a preparation method of the carbon nanotube in situ reinforced LED packaging silica gel and relates to an LED packaging silica gel and the preparation method of the LED packaging silica gel. The carbon nanotube in situ reinforced LED packaging silica gel comprises the preparation steps of: 1, carrying out plasma treatment on carbon nanotubes for 1 to 2hours; 2, adding a certain amount of treated carbon nanotubes into an appropriate amount of dimethyl polysiloxane monomer, carrying out in-situ polymerization under the action of an acidic catalyst, after the polymerization is finished, adding an alkaline neutralizing agent to be neutralized in a neutral state, or carrying out water washing to be neutral, and removing residual moisture and obtaining simethicone which is modified by carbon nanotubes and of which the tail end is hydroxyl; and 3, uniformly mixing the product obtained in the step 2 with a crosslinking agent and a catalyst to prepare a potting silica gel which comprises a component A and a component B. With the adoption of the carbon nanotube in situ reinforced LED packaging silica gel, the mechanical property of the silica gel is improved, simultaneously, the silica gel is ensured to have high light transmittance.

A thermally conductive silicone grease composition comprising:(A) an organopolysiloxane having at least two alkenyl groups in one molecule and having a kinetic viscosity of 5,000 to 100,000 mm2 / s at 25° C.;(B) a hydrolyzable methylpolysiloxane having a trifunctional termination at one end and represented by the following general formula (2):wherein R2 represents an alkyl group having 1 to 6 carbon atoms and b is an integer of 5 to 100;(C) a thermally conductive filler having a thermal conductivity of at least 10 W / m·° C.;(D) an organohydrogenpolysiloxane containing from 2 to 5 hydrogen atoms in one molecule directly bound to silicon atoms (Si—H groups);(E) a bonding aid having a triazine ring and at least one alkenyl group in one molecule; and(F) a catalyst selected from the group consisting of platinum and platinum compounds.

The first water repellent agent composition contains amino-modified silicone, a silicone resin, and a polyfunctional isocyanate compound. The second water repellent agent composition comprising dimethylpolysiloxane having a hydroxyl group and / or an alkoxy group having 1 to 3 carbon atoms, an amino group-containing silane coupling agent, a silicone resin, and a polyfunctional isocyanate compound.

The invention provides a surface protective film which has low pollution on an adhered object, will not be degraded over time and has an excellent stripping static prevention property, and provides an optical component attached with the surface protection film. A binder layer (2) is formed on a single surface of a substrate film (1) formed by transparent resin, the surface protection film (10) with a stripping film (5) comprising a stripping agent layer (4) is attached on the binder layer (2), the stripping film (5) is formed by stacking the stripping agent layer (4) on the single surface layer of a resin film (3), and the stripping agent layer (4) contains a stripping agent adopting dimethyl polysiloxane as a main component, and an antistatic agent non-reacted to the stripping agent. By surface transferring of the antistatic agent from the stripping film (5) to the binder layer (2), stripping static voltage when the binder layer (2) is stripped from a bound object is reduced.

The invention provides a light-diffusing dimethyl organic silicone rubber composition and an LED light-diffusing molding body for molding and solidifying the light-diffusing dimethyl organic silicone rubber composition. The light-diffusing dimethyl organic silicone rubber composition provides a condensate excellent in weatherability, light transmittance and light diffusing properties. The light-diffusing dimethyl organic silicone rubber composition is characterized in that 0.1 to 100 parts by mass of a light diffusion agent is added and dispersed in 100 parts by mass of translucent or semitransparent unlinked dimethyl silicone rubber composition so as to form the composition. The light diffusion agent is formed by organic silicone elastomer particles containing phenyl-containing siloxane units with the average particle diameter thereof to be 0.5 -100 mu m. The dimethyl silicone rubber composition comprises dimethyl polysiloxane, or dimethyl polysiloxane and an inorganic filler, or a wetting agent of the dimethyl polysiloxane and the inorganic filler.

A gas chromatographic method for determining a residual solvent in a phthalide compound takes cyanopropyl phenyl-dimethyl polysilicone as a stationary liquid capillary chromatographic column, hydrogenas a flame ionization detector and nitrogen as a carrier gas and calculates content of the residual solvent in peak area according to an external standard process. The method can determine normal heptane and other residual solvents in the phthalide compound and has the advantages of high sensitivity, strong specificity and high accuracy.

The invention provides a dual-component dual-curing organic silicon composition which consists of a component A and a component B. The component A comprises vinyl-containing poly dimethyl organosiloxane, silicon hydrogen radical-containing methylpolysilicone and a cross-linking agent, and the component B comprises hydroxyl-terminated polydimethylsiloxane and a platinum catalyst, wherein the weight ratio of the component A to the component B is from (1:1) to (10:1). A dual-component dual-vulcanization silicone rubber composition provided by the invention can be rapidly vulcanized into a silicone rubber elastomer in a heating condition, can have excellent bonding force to a base material so as to realize cohesive failure, and the bonding strength is greater than or equal to 1.0MPA; the dual-component dual-vulcanization silicone rubber composition also has a vulcanized speed equal to dual-component room temperature vulcanized silicone rubber and forms bonding force quickly. The proportion of the component A and the component B is changeable within a certain scope to adjust the vulcanized speed, and the proportion can be adjusted according to the on-site working condition requirement of customers so as to adapt to customer requirement.