摘要:
An organopolysiloxane composition that can be crosslinked by addition, comprisinga) a branched organopolysiloxane having unsaturated hydrocarbon groups, and triorganosiloxy end unitswherein at least 90% of the organo groups are methyl groups,the number average molecular weight of which is on average from 9,000 to 60,000,wherein the ratio of the number of diorganosiloxy units (D-units) to the number of branch points is on average between 15 and 40, andwherein at least one triorganosiloxy unit (M-unit) and at maximum half of all the M-units are free of unsaturated radicals, the remaining M-units each have only one unsaturated radical and the content of unsaturated radicals is from 0.2 to 1 mmol/g andb) a linear hydrogenpolysilxoane,wherein the number of siloxy units per molecule is greater than the ratio of the number of D-units to the number of branch points of component a),wherein at least half of the difunctional siloxy units (D-units) have hydrogen atoms directly bonded to silicon, andwherein the components a) and b) are present in a relative proportion such that the ratio of the number of SiH groups of component b) to the number of unsaturated hydrocarbon atoms of component a) is between 1.5 and 3.5, andc) a catalyzing quantity of a platinum catalyst, thereby a single composition can be used to coat a variety of substances without need for changing the reservoir containing the coating composition.
摘要:
A coating composition for coating thin-layer substrates, containing a Si-bonded organopolysiloxane (A) containing unsaturated hydrocarbon radicals and having a viscosity of 50 to -10.sup.7 MpA.s, an organopolysiloxane (B) containing at least three hydrogen-silicon atoms, a noble metal catalyst (C) and an additive (D) which retards the addition reaction at room temperature, wherein polymer (A) contains a number of trifunctional and/or tetrafunctional branch points T.sub.n, and/or Q.sub.n' and a number of Si atoms X.sub.m containing unsaturated hydrocarbon radicals, in whichn is 0 to 10 andn' is 0 to 10 andthe sum of N+n' is 1 to 10, andwherein ##EQU1## the terminal groups of polymer (A) formed by triorganosiloxy units containing at least one unsaturated hydrocarbon radical.
摘要:
Disclosed are electroviscous liquid essentially containingA) A linear and/or branched, eventually functionalized, polyether or the monomers thereof, the conversion product of such polyether resp. such monomer with mono- or oligo functional compounds and eventually additional additives, andB) a dispersing agent, andC) a non-aqueous dispersion-medium.In an embodiment a cavity contains the electroviscous liquid and has parts movable with relation to each other and electrode means for generating an electrical field within the cavitywherein applying the electrical field increases the viscosity of the liquid.
摘要:
A photographic recording material which contains a support and thereupon at least one light-sensitive silver halide emulsion layer together with a protective layer containing gelatine over the light-sensitive layer and optionally a layer on the reverse side containing gelatine, and the protective layer containing gelatine and/or the reverse side layer containing gelatine contains a silicone oil of the formula I ##STR1## in which R.sub.1 means hydroxy, alkoxy, cycloalkoxy, aryloxy,R.sub.2 means a residue of the formula ##STR2## or R.sub.1 R.sub.3, R.sub.4 means alkyl, aryl, cycloalkyl,R.sub.5, R.sub.6 means H, alkyl, aminoalkyl, polyaminoalkyl,A means a straight-chain or branched alkene residue with 3 to 20 C atoms, wherein there is between the Si atom and the N atom a carbon chain of at least 3 C atoms,m means 10 to 1000 andp means 1 to 350 and is hardened, distinguished by equally good coefficients of static friction and sliding friction before and after processing and by constantly good dry scratch resistance.
摘要翻译:一种照相记录材料,其含有至少一种感光卤化银乳剂层的支持体,以及在感光层上含有明胶的保护层和任选地在含有明胶的反面上的层,以及含有明胶的保护层 和/或含有明胶的反面层含有式I(* CHEMICAL STRUCTURE *)(I)的硅油,其中R 1表示羟基,烷氧基,环烷氧基,芳氧基,R 2表示下式的残基:(*化学结构* )或R 1 R 3,R 4表示烷基,芳基,环烷基,R 5,R 6表示H,烷基,氨基烷基,聚氨基烷基,A表示具有3至20个C原子的直链或支链烯烃残基,其中在Si原子和 N原子为至少3个C原子的碳链,m表示10至1000,p表示1至350,并且硬化,区分为处理前后静态摩擦系数和滑动摩擦系数,以及常数 耐干擦伤性好。
摘要:
Low temperature lubricating oils are fluorosiloxane compounds of the formulaT.sub.a M.sub.b D.sup.F.sub.c D.sub.dwhereinT represents phenyl trisiloxy groups or mixed phenyl trisiloxy-and alkyl trisiloxy groups;M represents trialkyl monosiloxy groups triphenyl monosiloxy groups or tri-alkyl/phenol-monosiloxy groups;D represents dialkyl disiloxy groups, diphenyl disiloxy groups, or phenyl-alkyl disiloxy groups and;D.sup.F represents disiloxy groups with a methyl or phenyl substituent and a fluorinated substituent of the formula C.sub.n F.sub.2n+1 --CH.sub.2 --CH.sub.2 --;a is a number from 0 to 5;b is a number from 3 to 7;c is a number from 3 to 7;d is a number from 30 to 70; andn is a number from 1 to 12.
摘要:
A water-repellent plaster molding is produced by forming a foam of water, surfactant and polyalkyl-hydrogen-siloxane adding this foam to a paste of plaster powder in water, and letting the mixture set.
摘要:
An aqueous alkylhydridopolysiloxane emulsion is stabilized against loss of hydrogen by addition thereto of about 0.1 to 5% by weight of an emulsifier containing perfluoroalkyl groups. The emulsion may further contain a fluoroalkyl-substituted siloxane of the formula ##STR1## wherein R each independently is alkyl with 1 to 6 carbon atoms or phenyl,R.sub.F is fluoroalkyl with 4-12 carbon atoms,a is about 5 to 70, andb is about 5 to 70.Advantageously the emulsifier is a member selected from the group consisting of a perfluoroalkyl ether of the formulaC.sub.x F.sub.2x+1 SO.sub.2 N (CH.sub.3) CO--(OCH.sub.2 --CH.sub.2).sub.n --(OCH CH.sub.3 CH.sub.2).sub.m --OC.sub.4 H.sub.9,whereinX=about 6-12,n=2-about 40 andm=2-about 40,and a perfluorinated alkane sulphonic acid salt of the formulaC.sub.x F.sub.2x+1 SO.sub.3 N(C.sub.n H.sub.2n+1).sub.4whereinx=6-12 andn=1-3.
摘要翻译:通过加入约0.1至5重量%的含全氟烷基的乳化剂,使氢烷基氢化聚硅氧烷水溶液稳定,防止氢气流失。 乳液可以进一步含有下式的氟代烷基取代的硅氧烷:其中R各自独立地为具有1-6个碳原子的烷基或苯基,RF为具有4-12个碳原子的氟代烷基,a为约5至70,b为 有利的是,乳化剂是选自式C x F 2 x + 1 SO 2 N(CH 3)CO-(OCH 2 -CH 2)n - (OCH CH 3 CH 2)m OC 4 H 9的全氟烷基醚的成员,其中X = 约6-12,n = 2-约40和m = 2-约40,以及式CxF2x + 1SO3N(CnH2n + 1)4的全氟化烷烃磺酸盐,其中x = 6-12和n = 1-3 。
摘要:
Refrigerating oils useful in refrigerating devices to produce temperatures lower than -86.degree. C. and as low as -130.degree. C. and free from salts, alcohols, halogenated hydrocarbons and halocarbons and having a viscosity below 10 mm.sup.2 /s at -40.degree. C., consisting essentially of mixtures of at least two members selected from the group consisting of hexamethyl disiloxane, octamethyl trisiloxane, linear decamethyl tetrasiloxane, octamethyl cyclotetrasiloxane and decamethyl cyclopentasiloxane.
摘要翻译:用于制冷装置的制冷油,以产生低于-86℃,低至-130℃的温度,并且不含盐,醇,卤代烃和卤代烃并且在-40℃下的粘度低于10mm 2 / s 基本上由至少两种选自六甲基二硅氧烷,八甲基三硅氧烷,线性十甲基四硅氧烷,八甲基环四硅氧烷和十甲基环五硅氧烷的组分的混合物组成。
摘要:
A skin care or skin-protecting composition comprising a highly viscous polydimethylsiloxane which optionally contains OH, vinyl, phenyl or alkyl groups with 2 to 6 C atoms in the terminal and/or middle positions, the polydimethylsiloxane having a viscosity of 10.sup.6 to 5.times.10.sup.7 mPa.s, and a highly volatile, linear or cyclic siloxane.
摘要:
Fluorosiloxane lubricant comprising compounds corresponding to the formulaT.sub.a M.sub.b D.sup.F.sub.c D.sub.dwhereinT denotes alkyltrisiloxy having 1 to 12 alkyl carbon atoms,M denotes trialkylmonosiloxy having 1 to 12 carbon atoms in each alkyl,D denotes dialkylsiloxy having 1 to 12 carbon atoms in each alkyl,D.sup.F denotes a substituted alkyldisiloxy having 1 to 12 carbon atoms in the alkyl and substituted by a fluorinated moiety of the formula C.sub.n F.sub.2n+1 --CH.sub.2 --CH.sub.2,whereinn is a number from 2 to 10,a is a number from 1 to 5,b is a number from 3 to 7,c is a number from 3 to 7, andd is a number from 30 to 70.
摘要翻译:含有对应于式TaMbDFcDd的化合物的氟硅氧烷润滑剂,其中T表示具有1至12个烷基碳原子的烷基三甲氧基硅烷,M表示各烷基中具有1至12个碳原子的三烷基单甲硅烷氧基,D表示各烷基中具有1至12个碳原子的二烷基甲硅烷氧基,DF表示 在烷基中具有1至12个碳原子并被式C n F 2n + 1-CH 2 -CH 2的氟化部分取代的取代的烷基二甲氧基硅烷,其中n为2至10的数,a为1至5的数,b为 3为7,c为3〜7的数,d为30〜70的数。