Abstract: This invention relates to an optically clear one-phase microemulsion which is transparent at a temperature range of from 0-70° C. comprising (i) at least one non-aqueous polar solvent, (ii) at least one non-polar solvent immiscible with (i), and (iii) at least one oxyalkylene-containing polydiorganosiloxane. The microemulsions of this invention are useful as delivery vehicles for personal care active ingredients such as antiperspirant salts, sunscreens, alpha-hydroxy fatty acids, and Vitamin E.

Abstract: A composition is disclosed that comprises non-hydrolyzable, block, non-(AB)n type copolymers comprising units of the formula {XR2[(SiO(R1)2]xSi(R1)2R2X}, units of the formula {YO(CaH2aO)bY}, and linking groups —NR3—, wherein R1 is alkyl, R2 is a divalent organic moiety, X and Y are independently selected divalent organic groups formed by the ring opening of an epoxide, R3 is selected from the group consisting of alkyl, aryl, aralkyl, oxygen-containing alkyl, oxygen-containing aryl, and oxygen-containing aralkyl, a=2 to 4, b=2 to 100, and x=1 to 500.

Abstract: The present invention relates to compounds of the formula where R1, R2 and R3 are independently selected from alkoxy radicals having from 1 to 8 carbon atoms; R4 and R5 are independently selected from the group consisting of alkylene having 1 to 12 carbons, arylenes having 6 carbon atoms and alkarylenes having 7 to 10 carbon atoms and n is an integer of from 1 to 10. These compounds may be used in rubber compositions.

Abstract: Textiles treated with a textile treating composition containing a silane or organosiloxane containing both an Si—C bonded aminoalkyl group containing a primary, secondary, or tertiary amine group, and at least one Si—O—C bonded (iso) oxyalkyl radical exhibit excellent soft hand while maintaining superior water-wettability.

Abstract: The present invention relates to linear polyether-polysiloxane copolymers of the general formula A(BC)nBA, in which linear polyether and linear polysiloxane units are linked via Si—C bonds, and to a process for their preparation.

Abstract: This Invention discloses the use of ascorbic and citric acid, their salts, ethers, acid esters and mixtures thereof in a method for the prevention of peroxide formation, and/or for decomposing peroxides already formed in polyethers. Hereby, the polyethers are made reactive to hydrosilylation by silanes and hydrosiloxanes. When the polyether treatment is done with mixtures of ascorbic acid and sodium ascorbate and allyl polyethers, the hydrosilylation product contains reduced levels of propanal. The copolymers prepared using the treated polyethers are efficient stabilizers of flexible polyurethane foams and rigid polyurethane and polyisocyanurate foams.

Abstract: A dental material is described which is characterized by a content of silicic acid condensates of norbornene or mercapto silanes, and which, after thiol-ene polymerisation with suitable reactants, shows only slight polymerisation shrinkage and produces polymerisates with high mechanical strength.

Abstract: Disclosed is an improved process for the manufacture of silicone containing copolymers via a hydrosilation reaction, in which the catalyzed reaction of organohydrosiloxane and olefinic polyether is carried out at between 20.degree.-120.degree. C., preferably 70.degree.-120.degree. C., under a vacuum between 750-1 mmHg. The reaction under these conditions results in a copolymer of a higher quality as compared to copolymers made by the traditional method without the benefit of a vacuum. If desired, the reaction can be taken to its clear point in a volatile compatibilizing solvent (for example toluene, xylene, or isopropyl alcohol), this solvent can then be removed from the reaction system, and another less volatile solvent, such as dipropylene glycol or polypropylene glycol, may then be added.

Abstract: Cyclic silane esters and solvolysis products thereof and processes for making these materials. The cyclic silanes and their solvolysis products are useful as adhesives, crosslinking agents and reagents for modifying polymers containing ester groups.

Abstract: Organosilicon compounds are described which contain a cyclic organic moiety between at least two reactive silane groups. The compounds are useful in coatings, adhesives, and sealants, and the like.

Abstract: The present invention provides a novel synthesis of the compounds of Formula (I): ##STR1## The compounds are produced in high yield and without utilizing expensive chromatographic separations. The synthesis is particularly advantageous because it is stereoselective.

Abstract: The invention is directed to water soluble silane compositions that are essentially alcohol free comprising compounds of the structure:(RO).sub.3-x (HO).sub.x Si(CH.sub.2).sub.3 (OCH.sub.2 CH.sub.2).sub.b OH(Ia ){(RO).sub.2-y (HO).sub.y Si(CH.sub.2).sub.3 (OCH.sub.2 CH.sub.2).sub.b O}.sub.z (IIa)wherein x ranges from 1 to 3, b ranges from 1 to 30, y is 0 or 1, and z ranges from 1 to 3, and R is an aryl or alkyl having from 1 to 10 carbon atoms. The invention further comprises methods for forming such compounds and for their use in preparing water soluble silane compositions by reaction with relative insoluble silane compounds terminated in functional groups selected from the group comprising epoxies, vinyls, mercaptos and acrylates.

Abstract: The present invention relates to a method of preparing an aerosol suppressant composition and to use of the composition to reduce or suppress silicone mist in high speed coating processes and significantly increase the adhesion of the coating to the substrate. More particularly, the present invention relates to a method of preparing an aerosol suppressant composition by reacting an organosilicon compound, an oxyalkylene containing compound, and a catalyst. The composition, when added to curable silicone coatings, reduces the amount of silicone mist in high speed coating processes.

Abstract: The present invention provides a novel synthesis of the compounds of Formula (I): ##STR1## The compounds are produced in high yield and without utilizing expensive chromatographic separations. The synthesis is particularly advantageous because it is stereoselective.

Abstract: A method is described for strengthening or restoring strength to a brittle oxide substrate which includes the steps of coating the brittle oxide substrate with an aqueous solution containing a silane-based composition, and curing the coating to form a transparent layer on the brittle oxide substrate. Also disclosed are novel compositions used to coat brittle oxide substrates, and silane-coated brittle oxide containers.

Abstract: The present invention relates to cyclic organosilicon compounds which are viscous liquids at room temperature and have a high surface tension. The present invention also relates to methods of making the cyclic organosilicon compounds which easily produce these compounds in good yields.

Abstract: The novel organosiloxane compounds of the present invention are characterized by the presence of 1) a silicon atom containing at least two alkoxy or other hydrolyzable groups and the group --OR.sup.1 Si.dbd. wherein R.sup.1 represents a divalent organic group comprising carbon, hydrogen, and, optionally, oxygen, and 2) a silicon bonded hydrogen atom or alkenyl radical. A preferred method for preparing the compounds is by the reaction of 1) a silane containing a silicon-bonded alkenyloxy group and at least two silicon-bonded hydrolyzable groups or a precursor of said hydrolyzable groups and 2) an organohydrogensiloxane. The reaction is conducted in the presence of a hydrosilation catalyst.

Abstract: The present invention relates to organosiloxane compositions that are reaction products of 1) a silane containing at least 3 hydrolyzable groups per molecule, 2) a monohydric or polyhydric alcohol containing at least one organofunctional group and 3) a polyhydric alcohol containing no organofunctional groups or ethylenic unsaturation, wherein said reaction products contain at least two silicon atoms. The organosiloxane compositions are particularly useful as adhesion promoting additives for curable organosiloxane compositions, particularly those that cure by a platinum group metal-catalyzed hydrosilation reaction.

Abstract: New compounds of the formula ##STR1## where Y' represents hydroxy, protected-hydroxy, O-tosyl, O-mesyl, bromine, chlorine, or iodine and X.sup.1 and X.sup.2 may independently represent hydrogen or a hydroxy-protecting group are useful as intermediates for the production of 19-nor vitamin D derivatives, particularly 1.alpha.,25-dihydroxyvitamin D.sub.3, from (-)quinic acid.

Abstract: The invention is drawn to cholesterol derivatives in which a cyclopentane ring has been introduced onto the 25-carbon of the side chain and to 24-epimers of these compounds. The compounds are useful intermediates in the production of 26,27-dimethylene-1.alpha.,25-dihydroxyvitamin D.sub.2 and 26,27-dimethylene-24-epi-1.alpha.,25-dihydroxyvitamin D.sub.2. These vitamin D derivatives are useful for the treatment of diseases such as osteoporosis.

Abstract: The invention relates to novel organosilyl and organosiloxanyl derivatives of glycerin ethers of the general formula ##STR1## wherein R represents --OH or the --OCH.sub.2 --CH.dbd.CH--(CH.sub.2).sub.3 --CH.dbd.CH.sub.2 group or the --(R.sup.5).sub.a --R.sup.6 group or the --OCH.sub.2 --CH.dbd.CH--(CH.sub.2).sub.5 --R.sub.4 group.

Abstract: The presence in curable organosiloxane compositions of a specified group of hydrocarbyloxy-substituted organosilicon compounds and condensation products of these compounds imparts cohesive bonding to a variety of substrates during curing of the compositions. At least one hydrocarbyloxy group on each silicon atom is derived from an alcohol containing at least two hydroxyl groups per molecule and the remaining hydrocarbyloxy groups are alkoxy. The adhesion additives are particularly effective for compositions cured at temperatures up to 100.degree. C.

Abstract: Adhesion additives for curable organosiloxane compositions comprise (I) a silane containing at least one alkoxy or enoloxy group, the remaining valences of the silicon atom being satisfied by groups bonded to silicon through oxygen and containing at least one H.sub.2 C.dbd.CR-- radical, where R is hydrogen or monovalent hydrocarbon, and (II) at least one organosilicon compound comprising (a) at least one group capable of participating in a hydrosilation reaction, and (b) at least one silicon-bonded alkoxy, enoloxy or silanol group.

Abstract: The invention relates to a process for the manufacture of 6-trans-leukotriene B.sub.4 (LTB.sub.4) of formula ##STR1## in which a butadienediol is prepared; the hydroxyl groups are esterified to produce a diester and this diester is subjected to a stereospecific reductive elimination using low valency titanium [Ti(0)] to produce a 6-trans triether of formula: ##STR2## the groups --OA in positions 5 and 12 of which are then converted to --OH groups and the group --CH.sub.2 OA in position of which is then converted to a --COOH group, to produce 6-trans-LTB.sub.4.The invention also relates to intermediates obtained in the said manufacturing process.

Abstract: The invention relates to compounds of the formula ##STR1## in which R.sup.3 is a hydrogen atom or a radical of the formulaR.sup.1 --R.sup.5 --O--(CH.sub.2).sub.y --,in which R.sup.1 is a halogen atom, a hydroxyl group, a C.sub.1 - to C.sub.18 -alkoxy group, a C.sub.1 - to C.sub.18 -alkyl group or a cholesteryl radical, R.sup.5 is a phenylene or biphenylene radical which may be linked to a phenylene radical via the --OOC-- group or a phenylene radical linked the --OOC-- group, y is an integer of from 3 to 12, R.sup.2 is selected from the group consisting of a radical of the formulaR.sup.6 --R.sup.1 and R.sup.7 --SiCH.sub.3).sub.2 H,where R.sup.6 is a single chemical bond or a phenylene, biphenylene or cyclohexylene racial or a phenylene radical linked to the --OOC-- or --COO-- radical or a phenylene radical linked to a cyclohexyl radical through the --OOC-- group, R.sup.

Abstract: The invention disclosed herein deals with acyloxy endblocked polyethers having improved hydrolytic stability. This invention also deals with polysiloxane-polyoxyalkylene copolymers having improved hydrolytic stability and, with compositions which include the polysiloxane-polyoxyalkylene copolymers in the presence of water, and to methods for use of the polysiloxane-polyoxyalkylene copolymers to prepare polyurethane foams.

Abstract: There is provided a process for preparing a hydrogensiloxane of the following general formula (2): ##STR1## wherein Rf is a perfluoropolyether or perfluoroalkylene group, n is equal to 1, 2 or 3, and p is equal to 0 or 1, said process comprising the step of hydrolyzing a chlorosilane of the following general formula (1): ##STR2## wherein Rf, n and p are as defined above, along with 1,1,3,3-tetramethyldisiloxane.

Abstract: Compositions and a method of delivering a humectant to a surface such as skin by forming a reaction product of the humectant with an organosilicon compound. The reaction product is applied to the skin surface and contacted with moisture which causes the reaction product to undergo hydrolysis on the skin surface. This releases free humectant onto the skin surface and the silanol functional organosilicon compound formed as a result of the hydrolysis can be utilized on the skin surface as a durable water repellent and softening ingredient for the skin.

Abstract: The present invention is a process for preparation of silyl ketene acetals. The process comprises contacting a mixture containing an organosilane having a silicon-bonded hydrogen (organohydrosilane) and a vinylic compound with RhCl(di-tert-butylsulfide).sub.2 as catalyst at a temperature within a range of about 20.degree. C. to 100.degree. C. The RhCl(di-tert-butylsulfide).sub.2 catalyst demonstrates higher activity than that typically described for rhodium catalysts, allowing for lower concentrations of catalyst and lower reaction temperatures to be used while maintaining high conversion to the desired silyl ketene acetals.

Abstract: A process for the conversion of FK-506 (I,R=allyl;1) to FK-525 (XV) and analogous 23-membered ring macrolides differing in the C.1-N.7 segment of the molecule (e.g. XVI) and is also applicable to the analogs FK-523 (XVII) and FK-520 (XVIII). The overall process consists of three stages: (a) initial degradation of the primary macrolide to an acyclic fragment containing a selectively protected C.10-C.34 framework with a protected aldehyde function at C.10 and a free hydroxyl function at C.26, (b) reacylation of the C.26 hydroxyl function with an appropriately N-protected alpha-amino acid moiety, and (c) reintroduction of the C.8 and C.9 carbons followed by regeneration of the FK-macrolide system.

Abstract: The invention provides an improved solventless hydrosilation process for preparing a siloxane-oxyalkylene copolymers, the improvement comprising conducting the reaction in the presence of at least one sodium metal phosphate.

Abstract: Novel, alkenyloxy-functional organosilicon compounds are described which contain at least one Si-bonded Y radical per molecule having the formula--(CH.sub.2).sub.2 --R.sup.2 --(A--R.sup.3).sub.z --O--CH.dbd.CH--CH.sub.2 --R.sup.4 (I),in whichA represents --O--, --S-- or ##STR1## R.sup.2 represents a linear or branched alkylene radical having from 1 to 7 carbon atom(s) per radical or a cycloalkylene radical having from 5 to 7 carbon atoms per radical, R.sup.3 represents a linear or branched alkylene radical having from 2 to 4 carbon atoms per radical, which may be substituted by a hydroxyl group, methoxy group, ethoxy group or trimethylsiloxy group, R.sup.4 represents a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms(s) per radical, and z is 0, 1 or 2.The alkenyloxy-functional organosilicon compounds are preferably silanes or organopolysiloxanes.The alkenyloxy-functional organopolysiloxanes can be crosslinked, for example, with ultraviolet light.

Abstract: There is disclosed a herbicidal composition in which a foliar-applied herbicide is activated by the inclusion of a silicone glycol-silicone alkane terpolymer adjuvant. The composition provides enhanced phytotoxicity in the control of narrowleaf weeds, particularly Barnyardgrass, Quackgrass and Johnsongrass, and often also shows an improved degree of rainfastness relative to similar herbicidal compositions employing prior art silicone glycol adjuvants.

Abstract: This invention reltes to vinyl ether siloxanes having the formula ##STR1## wherein Y is alkylene or phenylene optionally substituted with fluorine,R is alkylene or alkylene phenylene,R.sub.1 and R.sub.2 are lower alkyl,R.sub.3 is C.sub.1 to C.sub.20 alkyl,A is --CH.sub.2 --, ##STR2## W is ##STR3## with the proviso W is ##STR4## when p is one and at least one of W is ##STR5## when p is greater than one; Z is C.sub.2 to C.sub.3 alkylene,X is hydrogen or methyl,B is halo or lower alkyl,m has a value of from 1 to 10,n has a value of from 1 to 20,p has a value of from 0 to 10,r has a value of from 0 to 20,t has a value of from 1 to 100 andv has a value of from 0 to 4.The invention also relates to the process of preparing the present vinyl ether siloxanes and to their use as coating materials.

Abstract: A process is described for the improved synthesis of the optically pure C.sub.10 -C.sub.24 fragment of the macrolide structure of the immunosuppressant FK-506. This compound is also useful as an intermediate for preparing FK-506 derivatives.

Abstract: Fast high resolution separations of biopolymers with retention of biological activity have been achieved by hydrophobic interaction chromatography using trialkoxy silyl ethers of the general formula(RO).sub.3 Si--(CH.sub.2).sub.m --O--(CH.sub.2 CH.sub.2 O).sub.n 13 (CH.sub.2).sub.p R'chemically bonded to silica-based chromatographic supports. In the formula R is alkyl of from one to five carbons, m is an integer from two to five, n is an integer from one to five, p is an integer from zero of ten, and R' is methyl, phenyl, or substituted phenyl. Stable and reproducible bonded phases are prepared in a novel solventless procedure by a bonding process which uses a defined and controlled amount of water on the silica surface and a gaseous or volatile basic catalyst such as ammonia to produce a controlled amount of silane polymerization and cross-linking in addition to extensive bonding between silane and silica.

Abstract: A method is provided for silylating aromatic acylhalide by effecting reaction between an aromatic acylhalide and halogenated polysilane in the presence of an effective amount of a supported transition metal catalyst, such as a transition metal catalyst supported by an organic or inorganic substrate.

Abstract: Compounds of the general formula ##STR1## wherein R.sup.1 is alkyl with 1 to 8 carbon atoms,R.sup.2 is --O-- or --(CH.sub.2).sub.p O--, in which p=2, 3 or 4,R.sup.3 is hydrogen, alkyl with 1 to 4 carbon atoms or acyl,n is 40 to 60m is 0 to 3,x and y being selected so that the molecular weight of the polyoxyalkylene block is 1400 to 3000 and the molar ratio of x:y is 0.8 to 2.2, are added to coating compositions, such as paint, varnish or lacquer, in amounts of 0.001 to 0.5% by weight, based on the coating composition. This improves the scratch resistance and the sliding ability of the cured coatings.

Abstract: The compounds of the formula (I) ##STR1## in which X denotes CH.sub.2, O, S or NR.sup.6,R.sup.1 denotes alkyl, cycloalkyl, alkenyl, (substituted) phenyl, or (substituted) naphthyl,R.sup.2 and R.sup.3 denote alkyl, alkenyl or phenyl, or R.sup.2 and R.sup.3 together denote an alkylene chain,R.sup.4 denotes --H, --CN, --CCl.sub.3, --C.tbd.CH, alkyl, F, or --C(S)--NH.sub.2,R.sup.5 denotes pyridyl, furyl, thienyl, phthalimidyl, di(C.sub.1 -C.sub.4)alkylmaleinimidyl, thiophthalimidyl, dihydrophthalimidyl or tetrahydrophthalimidyl, which may all be substituted, or substituted phenyl, orR.sup.4 and R.sup.5 --together with the carbon atom bridging them--denote an optionally substituted indanyl, cyclopentenoyl or cyclopentenyl radical,with the proviso that compounds of the formula I in whichR.sup.1 denotes phenyl which is substituted in the para-position by (C.sub.1 -C.sub.4)alkoxy, halogen or (C.sub.1 -C.sub.4)alkyl;R.sup.2 and R.sup.3 denote CH.sub.3 ;X denotes O;R.sup.4 denotes H andR.sup.

Abstract: An improved process is provided for the preparation of siloxane-oxyalkylene copolymers by a solventless process via hydrosilation of oxyethylene-rich polyethers in the presence of carboxylic acids or carboxylic acid salts as a catalyst modifier. The use of a carboxylic acid or salt prevents acetal formation through the hydroxyl groups of the polyether and/or copolymer. The use of solvent, acetal treatment and solvent stripping steps of the conventional processes are eliminated and accordingly, environmental as well as economic benefits are achieved.

Abstract: The present invention relates to the preparation of bis(siloxane) derivatives of the chemical formula(I) which are useful for as an initiator to group transfer polymerization.The initiators of the formula(I) can be obtained from reacting lithium diisoalkylamide of the formula (III) and diester compounds of the formula(IV) with trialkylchlorosilicon of the formula(V) ##STR1## Wherein, R and R' stand for a straight or branched chain of aliphatic hydrocarbons, n is integer of 0-2. ##STR2## Wherein R is the same as the R in formula(I) ##STR3## Wherein R and n are the same as the R and n in the formula(I)(R).sub.3 SiCl (V)Wherein R stands for methyl or ethyl group.

Abstract: Alkoxysilanes containing low levels of chlorine compounds are prepared by stepwise etherification of chlorosilanes with alcohols in liquid phase and removal of the resulting hydrogen chloride by reacting the alkoxysilane obtained, which still contains a small amount of chlorine compound, with a metal alkoxide in an amount which corresponds to a small stoichiometric excess based on the proportion of chlorine compound, and freeing the reaction product from the resulting salt.

Abstract: This invention pertains to a new method for killing and controlling worms (Helminths), new formulations for killing and controlling worms in animals, new chemical compounds, and a new synthesis of northern hemisphere intermediates for the synthesis of milbemycin and avermectin macrolides.

Abstract: This invention resides in a process for production of predominantly a 1,4-O-metallation product of a hydride of silicon, germanium, or tin with an .alpha.,.beta.-unsaturated carbonyl compound. The reaction involved takes place in the presence of a heterogeneous noncomplexed rhodium-containing catalyst. This invention also resides in 1,4-O-metallation compositions having perfluoroalkyl R groups on either side of the C.dbd.C bond of an enol ether or on the acetal side of the C.dbd.C bond of a ketene acetal.

Abstract: A bis (alkoxysilyl) polyether is produced and utilized as a fabric sizing agent.

Abstract: A novel family of modified polyols suitable for use in the preparation of fluid polymer/polyols. The modified polyols are the reaction product obtained by reacting a silicon atom containing compound with an unmodified polyol, the silicon atom compound being one which has (a) at least olefinically unsatured hydrocarbyl group and (b) at least one functional group which is reactable with the hydroxy groups on the polyol. Examples of such silicon atom containing compounds include vinyltriethoxysilane and vinyltrimethoxysilane. Modified polyols of the type described are particularly useful in the preparation of polymer/polyols containing high levels of polymer since they reduce the viscosity of the final polymer/polyol and decrease the tendency of the polymer/polyol to produce polymer sediment.

Abstract: This invention provides novel silanes and bis-silylhydrocarbons that contain a plurality of silicon-bonded alkoxy groups and at least one substituent that is bonded to silicon through oxygen and contains at least four carbon atoms, two of which form a terminal group of the formula CH.sub.2 .dbd.CH--. A preferred class of these compounds will cohesively bond polyorganosiloxane elastomers and resins to both organic and inorganic substrates.

Abstract: A method is provided for silylating organic substrates, utilizing a halogenated polysilane, such as 1,1,2,2-tetrachloro dimethyldisilane and an aromatic acyl halide, for example, trimellitic anhydride acid chloride in the presence of a transition metal catalyst.

Abstract: Ethoxylated siloxane surfactants, and mixtures of such surfactants with curable silicone prepolymers. The mixtures are hydrophilic after cure, have semipermanent hydrophilicity, and are especially useful as dental impressions.

Abstract: This invention relates to the production of novel intermediate compounds which are useful in the process for producing 16-phenoxy- and 16-substituted phenoxy-9-keto-prostatrienoic acid derivatives, the antisecretory agents of U.S. Pat. No. 4,178,457.