Abstract: The invention relates to polyester-modified poly-siloxanes of the general formula (I) where A is an alkyl group having 1 to 8 carbon atoms, Z is an aliphatic group having 1 to 14 carbon atoms, R is an aliphatic and/or cycloaliphatic and/or aromatic poly-ester group containing at least 3 ?and having a weight-average molecular weight of 200 to 4000 g/mol, with no Zerewitinoff hydrogen atoms, Q is a group which contains no Zerewitinoff hydrogen atoms and is free from reactive carbon-carbon multiple bonds, m is 3 to 200 and o+n=2, with both o and n being other than zero. The invention further relates to the use of the compounds of the invention in thermoplastics, moulding compounds and coating materials.

Abstract: The invention relates to a process for the preparation of branched siloxanes containing R—SiO3/2 units, where R=organic radical, wherein straight-chain polysiloxanes containing silane hydrogen in the polymer chain are reacted in the presence of ammonium or metal carboxylates as a catalyst in the absence of hydroxy-functional organic compounds, and to siloxanes thus prepared and the use thereof in the preparation of polyurethane foams and antifoam formulations.

Abstract: An insulating film material formed by chemical vapor deposition, which contains an organic silane compound having such a structure that at least one secondary hydrocarbon group and/or tertiary hydrocarbon group is directly bonded to a silicon atom.

Abstract: Process for the preparation of a functionalized silicone oil by hydrosilylation of synthons in the presence of at least one organohydrosilicon compound, characterized in that: (1) the synthons hydrosilylated with the organohydrosilicon compound are identical or different, and comprise at least one hydrocarbon-comprising ring in which is included at least one oxygen atom, (2) the said hydrosilylation reaction is carried out in the presence of a homogeneous catalytic system comprising (i) a metal, preferably a complexed metal, chosen from the group consisting of cobalt, rhodium, ruthenium, platinum and nickel and (ii) a heterocyclic organic compound chosen from lactones, lactams, cyclic carbonates and cyclic carbamates.

Abstract: Polymerizable silicon-containing compounds of formula (1) wherein R1 is hydrogen, halogen or monovalent organic group are polymerized into polymers.

Abstract: Process for the preparation of organosilylated carboxylate monomers comprising the step of reacting an acyloxysilane with an unsaturated carboxylic acid, the monomers and their use as comonomer unit in the binder of antifouling coating compositions.

Abstract: Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R—siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.

Abstract: The invention relates to linear carboxy-functional organosiloxane compounds of the general formula (I) in which a is from 1 to 200, R1 are identical or different aliphatic or aromatic hydrocarbon radicals and R2 is —(Y)[O(C2H4-b(R3)bO)c(CdH2dO)e]fX, and the use thereof for the treatment of the surface of leather.

Abstract: The method for producing polyorganosiloxane from at least one type of organosilicon compound having a siloxane unit or alkoxysilane by the equilibrating reaction involving cleavage and recombination of the silicon-oxygen bond as a method carried out in the presence of an acidic catalyst capable of giving the product in high productivity and yield, corrosive to the system to a limited extent, and remaining in the product to a limited extent or degrading product quality to a limited extent if it remains, wherein a solid, acidic zirconium oxide catalyst is used as the acidic catalyst.

Abstract: By reacting a branched siloxane compound of formula (2) containing compounds of formula (1) as an impurity with a disiloxane compound of formula (3) in the presence of an acid compound, there is prepared a branched siloxane of formula (2) containing a reduced level of compounds of formula (1). R1nSi(OSiR23)3-n(OR3)??(1) R1nSi(OSiR23)4-n??(2) R23SiOSiR23??(3) R1 is a monovalent hydrocarbon group, R2 and R3 are H or monovalent hydrocarbon groups, and n is 0 or 1.

Abstract: Yellow dye moiety-containing prepolymers with blue light absorbing priorities and methods for producing the same for use in the production of relatively high refractive index polymeric compositions are described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices such as for example intraocular lenses and corneal inlays.

Abstract: A branched tetrasiloxane is prepared by preforming a liquid mixture of a disiloxane compound, an alcohol and an acid catalyst, adding a trialkoxysilane compound to the mixture for reaction, and adding water to the reaction mixture for co-hydrolysis, thereby forming a branched tetrasiloxane. The method is capable of preparing a branched tetrasiloxane, especially methyltris(trimethylsiloxy)silane having a sufficiently high purity to use as cosmetic oil in good yields.

Abstract: The specification describes preparation of materials comprising selected boron anions and processes using them as catalysts for condensation reaction of compounds having silicon-bonded hydroxy or alkoxy groups. Preferred anion compounds comprise borates incorporating quadri-substituted boron in which the substituents include highly halogenated hydrocarbon groups for example pentafluorinated phenyl groups or bis (trifluoromethyl) phenyl groups. Preferred anions are {B(C6F5)4}− and {B(C6(CF3)2H3)4}−.

Abstract: An unpurified silicone oil is treated with fibrous activated carbon, yielding a silicone oil of high purity, which will find use in the electric and electronic industry and as cosmetics.

Abstract: Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R—siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.

Abstract: This invention relates to a series of fluoroalkylsilane compounds of formula I. These compounds are silylation reagents which enhance the solubility of the silylated products in fluorocarbon solvents for preferred use in fluorous phase synthesis. Use of these compounds protects fragile hydrogen groups and also provides for the straightforward separation of the ultimate reaction products though fluorous phase extraction. This invention also relates to a two-step process for making compounds of formula I. The process comprises reacting an alkyldialkoxysilane with a perfluoroalkyl-substituted silane to produce a perfluoroalkyl-substituted dialkylsiloxyalkylsilane intermediate; and reacting the intermediate with halogen.

Abstract: A fluorine-containing organic silicon compound of the following formula (1): wherein Rf is a fluorine-containing C1-20 monovalent organic group, X1 is an alkylene group, n is an integer of from 0 to 100, R is a C1-5 monovalent hydrocarbon group, X is a hydrolyzable group, and p is 0, 1 or 2.

Abstract: A low molecular weight branched siloxane, typically methyltris(trimethylsiloxy)silane is effectively prepared in high yields by reacting a trichlorosilane, typically methyltrichlorosilane with a disiloxane, typically hexamethyldisiloxane in the presence of a linear phosphonitrilic chloride (LPNC) catalyst.

Abstract: A process for reducing the level(s) of water and/or other impurities from cyclosiloxanes by either azeotropic distillation, or by contacting the cyclosiloxane compositions with an adsorbent bed material. The purified cyclosiloxane material is useful for forming low-dielectric constant thin films having dielectric constants of less than 3.0, more preferably 2.8 to 2.0.

Abstract: The present application describes a porous polymethylsilsesquioxane (PMS) having a specific surface area between approximately 50 m2/g and 500 m2/g, a pore volume between approximately 0.1 cm3/g and 0.8 cm3/g, a monolayer volume between approximately 10 cm3/g and 60 cm3/g, a pore radius smaller than 1 nm for 90% of the pores and insolubility in water and organic solvents. The PMS according to the invention is prepared by precipitation of a polymethylsiliconate of the general formula in which n is a whole number between approximately 20 and 100 and M is an alkaline metal or alkaline-earth metal or NH4+.

Abstract: The invention relates to a method for producing organopolysiloxane terminated with alkoxy groups, wherein A) organopolysiloxane terminated with HO is reacted with B) alkoxysilane having at least three alkoxy groups and/or whose partial hydrolysate is made to react in the presence of C) acid phosphoric acid ester of general formula (I): (HO)aOP(—O—[(CR12)b—O]c[(CR22)d]e—L—M)(3−a), wherein a=1 or 2; R1 and R2=a hydrogen, methyl or hydroxyl radical; b and d=2 or 3; c=integral values from 2 to 15; e=0 or 1; L=a radical from the group —O—, —COO—, —OOC—, —CONR3—, —NR4CO— and —CO—; R3 and R4=a hydrogen or a C1-C10-alkyl radical and M=a monovalent, optionally a hydroxyl, fluorine, chlorine, bromine, C1-C10-alkoxylalkyl or cyano group substituted C1- to C20-hydrocarbon radical, provided that the radicals R1 and R2 can only be at one give

Abstract: The present invention relates to a process for protecting hair and skin from the deleterious effects of ultra violet radiation using topical applications of a novel dimethicone copolyol compounds bearing ultra violet absorbing substituents.

Abstract: The invention relates to block copolymers of the general average formula with siloxane blocks which are linked via rigid spacers, and to their use as surface-active agents.

Abstract: Disclosed is a holographic recording medium. The novel holographic recording mediums disclosed herein comprises: a) at least one polyfunctional epoxide monomer or oligomer which undergoes acid initiated cationic polymerization. Each epoxide in the monomer or oligomer is linked by group comprising a siloxane to a silicon atom and each monomer or oligomer has an epoxy equivalent weight of greater than about 300 grams/mole epoxide; b) a binder which is capable of supporting cationic polymerization; c) an acid generator capable of producing an acid upon exposure to actinic radiation; and optionally d) a sensitizer.

Abstract: An oligosiloxane having the formula (R1O)aSi(OSiR22R3)4−a wherein R1 is alkyl; each R2 is independently selected from C1 to C10 monovalent hydrocarbyl free of aliphatic unsaturation; R3 is hydrocarbly free of aliphatic unsaturation and having at least 11 carbon atoms; and a is 1, 2, or 3; and a method of preparing an alkoxy-functional oligosiloxane.

Abstract: The present invention relates to novel dimethicone copolyol compounds bearing ultra violet absorbing substituents. This invention also relates to compositions of matter, in particular cosmetic compositions, comprising the above novel compounds, which are especially well suited for the photoprotection of the skin and/or the hair against the deleterious effects of UV radiation, in particular solar radiation.

Abstract: This invention relates to methods for the preparation of hyperbranched siloxane polymers by anionic polymerization of a cyclotrisiloxane having the functional group Si—OH, and for the preparation of linear siloxane polymers by cationic or anionic polymerization of a cyclotrisiloxane having a vinylterminated functional group. Furthermore, this invention concerns novel cyclotrisiloxanes useful for the preparation of the aforementioned polymers.

Abstract: The invention relates to new, cross-linkable compounds containing (A1) linear organopolysiloxanes with aliphatically unsaturated hydrocarbon radicals, said organopolysiloxanes being of general formula (I) R1aR3-aSiO(R2SiO)c[R2Si—Y—SiR2O(R2SiO)c]dSiR3-bR1b, wherein R can be the same or different, and represents a monovalent, optionally halogenated hydrocarbon radical which is free of terminal aliphatic carbon—carbon multiple bonds, R1 represents a monovalent aliphatically unsaturated hydrocarbon radical, Y represents a bivalent organic radical which is free of terminal aliphatic carbon—carbon multiple bonds, a is 0 or 1, b is 0 or 1, and the sum of a+b per molecule is 1 or 2, c is a whole number to the value of 1 to 1000, d is 0 or a whole number to the value of 1 to 10, and optionally, (A2) MQ silicone resins which are soluble in (A1), on the condition that if MQ silicone resins (A2) are not used, the sum of a+b in the formula (I) is 1.3 to 1.

Abstract: The present invention relates to multifunctionalized alkoxy, the alkoxy functionality Y being introduced onto a suitable polyhydroorganosiloxane by a dehydrogenation/condensation reaction from the alcohol from which Y derives and then the functionality W by a hydrosilylation reaction from the olefinic compound form which W derives. The multifunctionalized alkoxy polyorganosiloxanes can be used as antiadhesion modulators in silicone compositions and as silica covering agents in silicone compositions containing fillers.

Abstract: The invention describes new organosilicon compounds containing alkenyl groups, comprising units of the formula A a ⁢ R b ⁡ ( R 1 ⁢ O ) c ⁢ SiO 4 - ( a + b + c ) 2

Abstract: Linear organopolysiloxanes containing alpha, omega terminal Si bonded omega-alkenyl groups or alpha, omega Si bonded H are prepared via hydrosilylation.

Abstract: A process for making organosilyl end-stopped diorganopolysiloxane fluid is provided comprising the steps of reacting an organic end-stopping compound with a fluorosilicone trimer in the presence of a catalytic amount of linear phosphonitrilic acid, and inactivating the linear phosphonitrilic acid, thereby forming organosilyl end-stopped diorganopolysiloxane fluid.

Abstract: For the continuous hydrolysis of organochlorosilane, a reaction system comprising at least three stages of hydrolysis is used. Each stage includes a reactor and a phase separator wherein hydrolysis is effected to form a hydrolysis mixture which is separated into a hydrolyzate and a hydrogen chloride-containing aqueous medium. The separated aqueous medium is circulated to the reactor. The hydrolyzate is conveyed to the reactor of the subsequent stage. The organochlorosilane is fed into the first stage reactor, the aqueous medium containing an amount of water corresponding to the consumption in one stage is fed into one stage reactor from the subsequent stage, and an amount of water corresponding to the consumption in the overall reaction system is fed in the last stage. Then the entire amount of hydrogen chloride generated in multiple stages of hydrolysis is recovered as anhydrous hydrogen chloride from the first stage.

Abstract: The present invention relates to triorganosiloxy-endblocked poly(methyl(C6-C40alkyl)siloxane)-poly(methyl(aralkyl)siloxane)-poly(methyl(C2-C4alkyl)siloxane) terpolymers. This invention also relates to two different methods of making these terpolymers. The triorganosiloxy-endblocked poly(methyl(C6-C40alkyl)siloxane)-poly(methyl(aralkyl)siloxane)-poly(methyl(C2-C4alkyl)siloxane) terpolymers of this invention are useful as mold release agents in aluminum die cast release agents, rubber lubricants, and as high reflexive index additives for the personal care industry.

Abstract: The use of linear or cyclic silicon compounds containing at least one chromophoric group of quinone or azo type as direct dyes in dye compositions intended for dyeing human keratin fibres and in particular the hair. The invention also relates to novel silicon compounds and dye compositions containing them, as well as to the corresponding direct dyeing process.

Abstract: The use of linear or cyclic silicon compounds containing at least one chromophoric group of quinone or azo type as direct dyes in dye compositions intended for dyeing human keratin fibers and in particular the hair. The invention also relates to novel silicon compounds and dye compositions containing them, as well as to the corresponding direct dyeing process.

Abstract: A mixture of a short chain linear phosphazene having the formula:X.sub.3-p (HO).sub.p P(NPX2).sub.m NP(O)X.sub.2,where X is a halogen selected from the group consisting of F, Cl, Br, and I, and m is an integer ranging from 0 to 6 and p is 0 or 1; anda linear sifoxane having a viscosity ranging from 1 to 5,000 centistokes is a catalyst for the polymerization, condensation, or redistribution of siloxanes; the process of making the catalyst and the process of using the catalyst.

Abstract: Novel liquid organopolysiloxane resins of the average composition[R.sup.1 Si(CH.sub.3).sub.2 O.sub.1/2 ].sub.a [(CH.sub.3).sub.3 SiO.sub.1/2 ].sub.b [R.sup.2 O.sub.1/2 ].sub.c [R.sup.1 Si(CH.sub.3)O].sub.d [(CH.sub.3).sub.2 SiO].sub.e [SiO.sub.2 ],whereinR.sup.1 is a C.sub.2 -C.sub.8 -alkenyl group,R.sup.2 is an optionally substituted, linear or branched C.sub.1 -C.sub.8 -alkyl group or a mixture thereof,a+b+c+d+e is about 1 to 6,d+e is about 0 to 3,the resin has a viscosity of 0.1 to 1000 Pas at 25.degree. C., andthe alkenyl or vinyl content of the resin is in the range of 0.4 to 4 mmol/g,and their preparation by reacting at least one of tetraalkoxysilane and its partial hydrolyzate with at least one organosiloxane and a strong acid as catalyst in the presence of water and optionally an organic solvent at a temperature of about >40.degree. C. They are formulated into novel low viscosity polydiorganosiloxane compositions.

Abstract: The use of linear or cyclic silicon compounds containing at least one chromophoric group of quinone or azo type as direct dyes in dye compositions intended for dyeing human keratin fibres and in particular the hair. The invention also relates to novel silicon compounds and dye compositions containing them, as well as to the corresponding direct dyeing process.

Abstract: The invention relates to aliphatically unsaturated organosilicon compounds having 2 to 17 silicon atoms, to processes for their preparation and to their use in crosslinkable organopolysiloxane compositions, especially in compositions which can be crosslinked peroxidically or by hydrosilylation.

Abstract: The present invention relates to a wipe-on polish composition which contains no wax or abrasive components. The polish requires minimal effort to wipe out to a thin, glossy, streak-free, hydrophobic film. The polish is comprised of an emulsion that contains an organopolysiloxane and a volatile diluent.

Abstract: A process for forming a partially polymerized DVS resin comprising heating DVS monomer (1,3-bis(2-bicyclo?4.2.0!octa-1,3,5-trien-3-ylethenyl)-1,1,3,3-tetramethyl disiloxane) in a solvent at a concentration of DVS monomer in the solvent such that:(a) the DVS resin, when applied and polymerized in a thin layer on a solid substrate does not craze; and(b) the DVS resin, is rendered photocurable by the addition of at least one photosensitive agent in an amount sufficient to convert the mixture to an organic-insoluble solid upon exposing the mixture to photon radiation and the film retention upon development with a solvent is at least 50 percent. The DVS resin may be used as an interlayer dielectric to fabricate thin film multichip modules.

Abstract: Chemically stable, perfluorinated, linear or cyclic polyorganosiloxanes (POS), and a process for the preparation thereof. Antifoams, agents for lowering surface tension, dirt repellents, antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings and other compositions containing the perfluorinated POS are disclosed.

Abstract: The invention relates to a process for the preparation of polyorganosiloxanes by hydrolysis of organohalosilanes of formula (I) R.sub.a R.sup.1.sub.b SiX.sub.c, wherein R and R.sup.1 identical or different, are an hydrogen atom or a linear or branched C.sub.1 -C.sub.6 alkyl, aryl, alkylaryl or aralkyl group; X is a halogen atom; and a+b+c=4 and 0<c<4; said process comprising the steps of carrying out three or more successive hydrolysis steps (1), (2), (3), in which the reaction medium is capable of exerting an increasing hydrolysing force on the organohalosilanes (I), wherein step (1) is a hydrolysis under pressure in the presence of an aqueous solution S.sub.1 of saturated hydrogen halide, at the pressure and temperature of the reaction medium; and, optionally, carrying out one or more coalescence step (4).

Abstract: This invention relates to a filtering cosmetic composition characterized in that it is comprised, in a cosmetically acceptable carrier, at least one nanopigment of metal oxides selected amongst titanium, zinc, cerium, zirconium, iron oxides or mixtures thereof, having an average diameter lower than 100 nm, and at least one polymer carrying at least one ultraviolet absorbing group selected amongst liposoluble polymers having a hydrocarbonated structure and the polymers of siloxanic structure and such compositions are useful for the protection of human epidermis and hair against UV radiation or as make-up composition.

Abstract: Organopolysiloxane oils and gums are produced by the condensation of silanol-terminated organosiloxane in the presence of an effective amount of a peralkylated phosphazene base as a catalyst and at reduced pressure.

Abstract: A method for the preparation of very pure organopentasiloxane having the hydrogen atom or an aliphatically unsaturated monovalent hydrocarbon group bonded to the silicon atom at one molecular chain terminal and having a hydrolyzable group or groups bonded to the silicon atom at the other molecular chain terminal.

Abstract: New alkyl substituted siloxanes and alkyl substituted polyether fluids are prepared by reacting an unsaturated alkyl, a aralkyl or ether with alkylhydrido siloxanes such as (i) comonomers RSi(OSiMe.sub.2 H).sub.3, (ii) oligomers (HMe.sub.2 SiO).sub.2 --Si(R)--O--Si(R)--(OSiMe.sub.2 H).sub.2, and (iii) higher molecular weight siloxane species RSi?(OSiMe.sub.2).sub.x OSiMe.sub.2 H!.sub.3 and ?HMe.sub.2 SiO(Me.sub.2 SiO).sub.x !.sub.2 Si(R)O(R)Si?(OSiMe.sub.2).sub.x OSiMe.sub.2 H!.sub.2. R is a C.sub.2 to C.sub.18 straight-chain or branched-chain alkyl substituent.

Abstract: This invention relates to a process for the manufacture of a silane or polyorganosiloxane containing a cycloalkyl substituent by hydrogenation of a silane or polyorganosiloxane containing at least one aromatic hydrocarbon substituent in the presence of a Raney nickel catalyst without a solvent.

Abstract: Use of a certain class of acid washed clays enables a fixed bed process for the production of very low viscosity low silanol content silicone fluids to be produced in a fixed bed single reactor process.