摘要:
The electroviscous suspension is based on a mixture of aqueous silica gel with silicone oil as the liquid phase to which a dispersant is added. The dispersant consists of amino functional or silicon-functional polysiloxanes having a molecular weight above 800. The concentration of the dispersant is from 1 to 30% by weight and preferably from 5 to 20% by weight, based on the silica gel particles. Electroviscous suspensions such as these are distinguished by the fact that they are highly compatible with elastomeric materials, non-sedimenting, non-inflammable and physiologically acceptable. In addition, they are heat- and freeze-resistant over a wide temperature range and are largely unaffected by temperature and pressure in their viscosity.
摘要:
A grease composition having high thermal conductivity and excellent heat dissipation ability, comprising (A) 100 parts by weight of a base oil and (B) 500 to 1,200 parts by weight of metallic aluminum powder having the average particle size in the range of 0.5-50 mu m; and a semiconductor device utilizing the aforesaid grease composition.
摘要:
Lubricating agents for the production of carbon yarns comprise at least one organo polysiloxane of the general formula I wherein R , R , R , R and R each represent a methyl group or ethyl group; R represents a hydrogen atom, or an alkyl group with 1 to 5 carbon atoms or a -a phenyl group; R and R each represents a methyl group, ethyl group or hydroxyl group, and m and n are integers such that the viscosity of the organo polysilosane at 25 DEG C is in the range of 5 to 1000 centistokes, together with at least one amino-modified polysiloxane. The amino-modified polysiloxane is preferably of the general formula (II) where R represents a hydrogen atom, or an alkyl group with 1 to 5 carbon atoms or phenyl group; R , R , R and R each represent a methyl group or an ethyl group; R and R each represent a methyl group, an ethyl group or a hydroxyl group; R , R and R each represent a hydrogen atom, (a methyl group or an ethyl group; X represents an alkylene group with 3 to 5 carbon atom; Y represents an alkylene group with 2 to 6 carbon atoms; and p and q are integers such that the viscosity at 25 DEG C of the amino-modified polysiloxane is in the range of 10 to 10000 centistokes.
摘要:
PURPOSE: To provide the titled compsn. having excellent durability at a high temp., by mixing an arom. amine-modified organopolysiloxane with an organopolysiloxane. CONSTITUTION: A heat-resistant silicone oil compsn. consists of 100pts.wt. organopolysiloxane (A) having a viscosity of 10W1,000,000cs and of formula I (wherein R 1 is alkyl, phenyl; a=1.95W2.25) and 0.01W5pts.wt. arom. amine-modified organopolysiloxane (B) of formula II or III (wherein R 1 is as defined above; R 2 is a group of formula IV, V or VI; l is 1W50; m is 0W47; n is 1W10 and m+n =1W48). When conventional silicone oil is exposed to a high temp. of 200°C or higher, an oxidation reaction slowly proceeds so that lubricating oil and hydraulic fluid exposed to a relatively high temp. can not have sufficient durability by the use of the silicone oil alone. However, by blending component B, durability at a high temp. of 200°C or higher can be greatly improved with good compatibility, the thickening rate bodying speed under a condition of heating in the open air is largely decreased and a long-term service at a high temp. becomes possible. COPYRIGHT: (C)1984,JPO&Japio
摘要翻译:目的:提供标题化合物。 通过混合芳香剂在高温下具有优异的耐久性。 胺改性的有机聚硅氧烷与有机聚硅氧烷。 构成:耐热硅油。 由100pts.wt 粘度为10-1,000,000cs和式I(其中R 1为烷基,苯基; a = 1.95-2.25)和0.01-5pts.wt。的有机聚硅氧烷(A) 芳香。 式II或III的胺改性的有机聚硅氧烷(B)(其中R 1如上所定义; R 2是式IV,V或VI的基团; I是1-50; m是0-47; n为1-10,m + n = 1-48)。 当常规硅油暴露于高温时 200℃以上时,缓慢进行氧化反应,使润滑油和液压油暴露于较高温度。 通过使用单独的硅油不能具有足够的耐久性。 然而,通过混合组分B,在高温下的耐久性。 可以大大提高200℃以上的良好的相容性,在露天加热条件下的增稠速率主体化速度大大降低,在高温下长期使用。 成为可能
摘要:
Organic peroxide curable polydiorganosiloxane compositions having improved release from metal molds upon curing are disclosed. In addition to the conventional high molecular weight polydiorganosiloxane gum, reinforcing filler, structure control additives, and curing agent, the improved compositions of this invention contain from 0.05 to 3 parts by weight of a polydiorganosiloxane fluid having methyl groups and carboxyfunctional groups as substituents.
摘要:
PROBLEM TO BE SOLVED: To provide a fiber treatment agent that can sufficiently suppress the accumulation of scum in a vortex flow air fine spinning and can give high-speed spinnability.SOLUTION: A fiber treatment agent comprising one or two or more lubricants selected from among a lubricant (A), a lubricant (B) and a lubricant (C) as given below and having a kinematic viscosity at 30°C of 1×10to 100×10m/s is used as a fiber treatment agent for use in a vortex flow air fine spinning. A lubricant (A): a 5-70C aliphatic ester compound; a lubricant (B): a linear polyorganosiloxane having a kinematic viscosity at 30°C of 5×10to 100×10m/s; and a lubricant (C): a mineral oil having a kinematic viscosity at 30°C of 5×10to 100×10m/s.
摘要:
PROBLEM TO BE SOLVED: To provide dry film lubricant coatings by using a silicone resin binder, either as an aqueous emulsion or in a solvent-based system, to fix an alkaline earth metal fluoride to a substrate.SOLUTION: The compositions used to apply the coatings may also include relatively minor amounts of xylene, ammonium benzoate, a wetting agent, and/or a porosity-inducing agent, although none of those additives remains in the cured coating. Multi-layer dry film lubricant coatings are also disclosed, with the multi-layer coating having a basecoat layer as described above, and a topcoat layer made of a layer-lattice solid such as graphite or molybdenum disulfide, and a silicone resin, aluminum phosphate or an alkali metal silicate binder.
摘要:
PROBLEM TO BE SOLVED: To provide a non-phosphorus and non-sulfur additive suitable for use as an antiwear additive, an antifatigue additive, and an extreme pressure agent, and a method for using these additives in a lubricating oil composition. SOLUTION: The method for forming an antiwear film on an internal engine component comprises: a step for contacting a surface of an internal wearing component of the engine with a tetra-functional hydrolyzable silane compound of the general formula: Si-X 4 (wherein, X is independently selected from the group consisting of hydroxy, an alkoxy, an aryloxy, an acyloxy, amino, a monoalkyl amino and a dialkyl amino) or a hydrolysis product thereof; and a step for hydrolyzing and condensing the tetra-functional silane to thereby form a film. The mixed silane film and the products produced by these methods are also provided. COPYRIGHT: (C)2008,JPO&INPIT