Abstract: A urethane (meth)acrylate metal salt obtained by reacting (A) one or more polyisocyanates, (B) one or more hydroxy functional (meth)acrylates, and (C) one or more metal salt polyols which are the reaction product of a metal oxide and a half ester containing a hydroxy group and a carboxylic acid group. Processes of preparing such salts and polymers prepared from such salts are also disclosed. The polymers are useful for coating and adhesive compositions prepared by radiation or peroxide curing processes.

Abstract: A liquid precursor for forming a transparent metal oxide thin film comprises a first organic precursor compound. In one embodiment, the liquid precursor is for making a conductive thin film. In this embodiment, the liquid precursor contains a first metal from the group including tin, antimony, and indium dissolved in an organic solvent. The liquid precursor preferably comprises a second organic precursor compound containing a second metal from the same group. Also, the liquid precursor preferably comprises an organic dopant precursor compound containing a metal selected from the group including niobium, tantalum, bismuth, cerium, yttrium, titanium, zirconium, hafnium, silicon, aluminum, zinc and magnesium. Liquid precursors containing a plurality of metals have a longer shelf life. The addition of an organic dopant precursor compound containing a metal, such as niobium, tantalum or bismuth, to the liquid precursor enhances control of the conductivity of the resulting transparent conductor.

Abstract: An absorbing ether-like compound including a siliconethoxy, silicondiethoxy, or silicontriethoxy species attached to a naphthalene or anthracene chromophore via an oxygen linkage is used as an organic light-absorbing compound. The absorbing ether-like compound is incorporated into spin-on glass materials to provide anti-reflective coating materials for deep ultraviolet photolithography. A method of synthesizing the light-absorbing ether compounds is based on the reaction of an alcohol-substituted chromophore with an acetoxysilicon compound in the presence of alcohol. A method of making absorbing spin-on-glass materials including the absorbing ether-like compounds is also provided.

Abstract: Process for the stereoselective reduction of chiral &agr;- or &bgr;-keto esters which have a chiral center in the &ggr; position in an inert solvent at temperatures from −80 to +50° C. using a reductant obtained by reaction of NaBH4 and (D)- or (L)-tartaric acid, to give the corresponding diastereomeric hydroxy compounds in each case.

Abstract: A room temperature curable organopolysiloxane composition comprising (1) a hydroxyl end-blocked organopolysiloxane having a viscosity of 10-1,000,000 centistokes at 25° C. in admixture with a premix of (2) methyltriacetoxysilane or a partial hydrolyzate thereof as a curing agent and (3) methanol is improved in shelf stability, physical properties and outer appearance as well as adhesion to aluminum.

Abstract: The present invention is directed to a process for the preparation of a compound of formula (X-a): or a pharmaceutically acceptable salt form thereof, wherein: R1 is selected from the group consisting of: C1-5 alkyl substituted with 0-5 R1a, —(CH2)r—C3-10 cycloalkyl substituted with 0-5 R1a, and —(CH2)r-aryl substituted with 0-5 R1a. Compounds of Formula (X-a) are macrocyclic molecules containing anti-succinate residues which inhibit metalloproteinases such as aggrecanase, and the production of tumor necrosis factor (TNF). The anti-succinates are formed by an Ireland Claisen rearrangement of a silyl ketene acetal which proceeds with high stereoselectivity.

Abstract: A hydrolyzable group end-blocked organopolysiloxane is prepared by reacting (A) an organopolysiloxane having a silanol group at each end of its molecular chain with (B) an organosilicon compound having hydrolyzable groups or a partial hydrolyzate thereof in the presence of (C) a condensation catalyst. Use is made of a vibratory mixer comprising a conduit through which a fluid flows in an axial direction and an agitating element disposed in the conduit for reciprocal motion in the flow direction. A reactant mixture of necessary components is introduced into the conduit where the components are vibro-agitated by the agitating element while reaction takes place.

Abstract: To the surface of a semiconductor substrate made of silicon, isopropenoxytrimethylsilane is supplied as a surface treating agent to render the surface of the semiconductor substrate hydrophobic and increase adhesion to the semiconductor substrate. Thus, Si(CH3)3 (trimethylsilyl group) is substituted for the hydrogen atom of an OH group on the surface of the semiconductor substrate, resulting in (CH3)2CO (acetone). Subsequently, a chemically amplified resist is applied to the surface of the semiconductor substrate and exposed to light by using a desired mask, followed sequentially by PEB and development for forming a pattern. Since the surface treating agent does not generate ammonia, there can be formed a pattern in excellent configuration with no insoluble skin layer formed thereon.

Abstract: A method for the preparation of a hydrophobic clay by contacting an aqueous suspension of the clay with an organosilane of formula R.sup.1.sub.a SiX.sub.4-a or an organosiloxane comprising units of formula R.sup.2.sub.n SiO.sub.(4-n)/2 in the presence of an acid and a water-miscible solvent. The resulting clay suspension is then contacted with a water-immiscible solvent to effect separation of the hydrophobed clay from the suspension.

Abstract: The present invention relates to asymmetrical siloxy compounds of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R.sup.4 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; and n is an integer of from 1 to 8.

Abstract: Acetoxysilanes are prepared by a process comprising:(i) reacting at least one chlorosilane with acetic acid in a medium containing acetyl chloride and a catalyst, and removing the hydrogen chloride which is formed during the reaction;(ii) reacting the reaction mixture from step (i) with acetic anhydride; and(iii) separating and obtaining the product acetoxysilane.

Abstract: A 1-acyloxy-organotetrasiloxane represented by the general formula: ##STR1## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, and a process for producing the above mentioned 1-acyloxy-organotetrasiloxane, which is characterized by subjecting hexamethylcyclotrisiloxane to a ring-opening reaction with an acyloxysilane represented by the general formula: ##STR2## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, in the presence of an acidic catalyst.

Abstract: A method of manufacturing acyloxysilane compounds having functional groups bonded to a silicon atom via Si--C bonds comprising reacting in a hydrosilation reaction an unsaturated compound (a) selected from the group consisting of (i) styrene or styrene derivative, (ii) vinylsilane compound, (iii) siloxane compound having a vinyl group bonded directly to a silicon atom, (iv) epoxy-functional olefin, (v) diene compound, (vi) allyl compound described by formula CH.sub.2 .dbd.CHCH.sub.2 X, where X is a halogen atom, an alkoxy group, or an acyloxy group, (vii) olefin compound having a terminal vinyl group, and (viii) acetylene-type compound with a silicon compound (b) that contains hydrogen atom bonded to the silicon atom and acyloxy group in the presence of a platinum catalyst.

Abstract: Fluorinated alkene compounds useful for and methods of controlling nematodes, insects, and acarids that prey on agricultural crops. Polar compounds are particularly useful for systemic control of pests.

Abstract: Silane compounds are described having the formula:Si(OR.sup.1).sub.a (O.sub.2 CR.sup.2).sub.b F.sub.cwherein:R.sup.1 is alkyl, alkenyl, alkynyl, aryl or benzylic and is optionally non-fluorinated, partially fluorinated or perfluorinated;R.sup.2 is --CH.sub.2 F, --CHF.sub.2 or --CF.sub.3 ;a is 1, 2 or 3;b is 1 or 2;c is 0, 1 or 2; andwherein a+b+c equals 4. Methods of making and using these silane compounds in integrated circuit fabrication processes also are described.

Abstract: Acyloxysilanes are prepared by a process of reacting an organochlorosilane with an excess of monocarboxylic anhydride at elevated temperature, thereby forming product acyloxysilane and by-product acyl chloride transferring the reaction mixture to the middle inlet of a separation tower having a still pot at its base, removing excess carboxylic anhydride by distillation at the tower top under reduced pressure, removing acyl chloride by-product from the separation tower, uniformly removing acyloxysilane from the tower still pot, and reacting virtually quantitatively the residual acid chloride present in the acyloxysilane removed from the still pot by adding a metal carboxylate to the acyloxysilane and separating the metal chlorides formed from the product.

Abstract: A process for producing surface modified metal oxide and/or organo-metal oxide compositions comprising esterifying at least a portion of the metal oxide and/or organo-metal oxide composition through contact with at least one esterification agent and at least one catalyst wherein the esterification agent and the catalyst are in the liquid phase. The process may be utilized to produce hydrophobic metal oxide and/or organo-metal oxide compositions at ambient temperature and/or ambient pressure conditions.

Abstract: Acyloxysilanes are prepared by the anhydrous reaction of stoichiometric amounts of a carboxylic acid with a mixture of a halosilane and a silazane in an aprotic solvent, such as diethyl ether, acetonitrile, tetrahydrofuran or toluene, in an inert gas atmosphere. In a preferred embodiment the silazane is prepared in situ by the reaction of the corresponding halosilane and ammonia. No catalyst is necessary and the reaction preferably is performed at a temperature of -5.degree. C. to 45.degree. C.

Abstract: Organosilicon aldehydes and ketones are prepared by a method in which an organosilicon compound containing ozonide functionality is first formed by exposing an organosilicon compound containing unsaturation to ozone. The organosilicon compound containing ozonide functionality is then reduced to the corresponding organosilicon aldehyde or ketone with a reducing agent. One preferred reducing agent is a combination of zinc and acetic acid. Complete conversion of the ozonide to the carbonyl (.dbd.C.dbd.O) compound is obtained when the ozonide containing the reducing agent is heated briefly to about 30.degree. C.

Abstract: Silanes of the general formula I ##STR1## wherein n is an integer of from 1 to 5, at least one of the residues R represents a hydrolyzable residue selected from the group of substituents consisting of halogen, alkoxy, sec. amino and oxycarbonyl hydrogen or oxycarbonyl alkyl, and the other residues represent alkyl, cycloalkyl, aryl or one of the said hydrolyzable residues, a process for their preparation, and their use.

Abstract: A process for the production of organopentasiloxane represented by the general formula: ##STR1## wherein R.sup.1 is an acryloyloxy-containing monovalent organic group or a methacryloyloxy-containing monovalent organic group; R.sup.3 is a monovalent hydrocarbon group; X is a hydrolytic group; and the subscript n is 0, 1, or 2; which is characterized subjecting (A) 1-hydroxy-organotetrasiloxane, or an organosiloxane oligomer mixture comprising it as the main component, which is obtained by hydrolyzing 1-acyloxy-organotetrasiloxane or an oganosiloxane oligomer mixture comprising it as the main component; and (B) hydrolytic silane represented by the general formula R.sup.3.sub.n SiX.sub.(4-n) to a condensation reaction.

Abstract: A process for removing residual acidic chlorine from acyloxysilanes, comprises virtually quantitatively reacting metal carboxylates with the acidic chlorine present in the acyloxysilane, and the metal chlorides formed being separated off.

Abstract: A process for preparing a silane of the formula IR.sup.1.sub.n SiR.sup.2.sub.m (I)whereR.sup.1 is --O--Y, n is an integer from 1 to 3, R.sup.2 is ##STR1## m is an integer from 1 to 3 and n+m=4, and Y and Z are each, independently of one another, unsubstituted or mono- or polyhalo-substituted C.sub.1 --C.sub.20 -alkyl, C.sub.2 --C.sub.20 -alkenyl, C.sub.2 --C.sub.20 -alkynyl and --(CH.sub.2).sub.p --A, where p is an integer from 0 to 6 and A, which is unsubstituted or substituted by one or more C.sub.1 -C.sub.6 -alkyls, is a 3- to 20-membered hydrocarbon ring entails reacting a halosilicon compound of the formula IISiX.sub.4 (II)whereX is fluorine, chlorine, bromine and iodine, with compounds of the formula III and IV, or with an anhydride of the formula V and the compound of the formula IV ##STR2## where R.sup.1 and R.sup.2, and Z have the above meanings, M is a metal of main group one and two.

Abstract: Organocarbonoyloxysilanes are prepared by reacting an organochlorosilane with a carboxylic acid in a first step which liberates HCl, removing the HCl which is formed, reacting the reaction mixture from the first step with a carboxylic acid anhydride in a second reaction step, the first and/or second reaction steps being conducted in the presence of a catalyst, and isolating the resulting organocarbonoyloxysilane product from the reaction mixture.

Abstract: Compounds of the formula ##STR1## where the symbols have the meaning described in the application, have retinoid-like or retinoid antagonist-like biological activity.

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: The present invention provides an industrially advantageous process for preparing a 2-alkyl-3-(biphenyl-4-yl)methyl-3H-imidazo[4,5-b]pyridine derivative represented by the following formula (II) which is a precursor of an antagonist against an angiotensin II receptor useful as an antihypertensive drug, a biphenyl derivative which is a precursor of the substituent of the pyridine derivative, a process for the preparation thereof, and an intermediate useful for the preparation of the biphenyl derivative: ##STR1##

Abstract: A process for making .beta.-alkenyltrimethylsilanes and trimethylsilyl carboxylates. The process comprises contacting a mixture comprising hexamethyldisilane and an alkene carboxylate having a .beta.-unsaturated carbon atom with novel organo-palladium and organo-nickel complexes, as catalysts, at a temperature within a range of about 100.degree. C. to 250.degree. C. The present process is especially useful for making allyltrimethylsilane and trimethylsilyl acetate.

Abstract: The present invention provides an industrially advantageous process for preparing a 2-alkyl-3-(biphenyl-4-yl)methyl-3H-imidazo[4,5-b]pyridine derivative represented by the following formula (II) which is a precursor of an antagonist against an angiotensin II receptor useful as an antihypertensive drug, a biphenyl derivative which is a precursor of the substituent of the pyridine derivative, a process for the preparation thereof, and an intermediate useful for the preparation of the biphenyl derivative: ##STR1## The 2-alkyl-3-(biphenyl-4-yl)methyl-3H-imidazo[4,5-b]pyridine derivative can be prepared in a high yield according to the present invention from a 2-amino-5-halogeno-3-nitropyridine derivative through amidation, N-alkylation and reductive cyclization. The halogen atom introduced at the 5-position as a protective group against nitration can be eliminated simultaneously in the step which is conducted thereafter. Thus, this process is industrially advantageous.

Abstract: Silanes of the general formula (I):{X.sub.a R.sub.b Si(R'(A).sub.c).sub.(4-a-b) }.sub.x B (I)in which the groups and indices have the following meaning:X: hydrogen, halogen, hydroxy, alkoxy, acyloxy, alkyl carbonyl, alkoxycaryl or --NR".sub.2 ;R: alkyl, alkenyl, aryl, alkaryl, or aralkyl;R': alkylene, arylene or alkylene arylene;R": hydrogen, alkyl or aryl;A: O, S, PR", POR", NHC(O)O or NHC(O)NR";B: straight chain or branched organic group, which is derived from a B' compound with at least one C.dbd.C double bond for c.dbd.1 and A.dbd.NHC(O)O or NHC(O)NR") or at least two C.dbd.C double bonds, and 5 to 50 carbon atoms;a: 1, 2 or 3;b: 0, 1 or 2;c: 0 or 1;x: whole number, whose maximum value corresponds to the number of double bonds in compound B' minus 1, or is equal to the number of double bonds in compound B', when c.dbd.

Abstract: A continuous method is provided for making a mixture of alkylpolyacyloxysilane and alkoxyacyloxysilane which is useful as a curing catalyst for a one part moisture curable silicone RTV. A steady-state mixture of alkylpolyacyloxysilane and alkoxyacyloxysilane is established in the reboiler of a distillation system having a reboiler, a distillation column, and a condenser as a result of the continuous introduction into the distillation column of a mixture of an alkyltrichlorosilane and silicon tetrachloride and the direct feeding of an alcohol such as tertiary butanol into the reboiler. A mixture comprising alkylpolyacyloxysilane and alkoxyacyloxysilane and aliphatic carboxylic is continuously pumped to a collection vessel. The continuous stripping and recycling of the aliphatic carboxylic from the collection vessel results in the continuous production of the desired silane mixture.

Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which ##STR2## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.

Abstract: There is disclosed a method for preparing a diorganopolysiloxane having a functional group at only one end of the molecular chain and having the formulaR(R.sub.2 SiO).sub.p Bwherein R is an independently selected monovalent hydrocarbon group, B is selected from the group consisting of a hydrogen atom and an organosilyl group having the formula--SiR.sub.

Abstract: Silanes of the general formula (I):{(X.sub.a R.sub.b Si(R'(A).sub.c).sub.(4-a-b) }.sub.x B (I)in which the groups and indices have the following meaning:X: hydrogen, halogen, hydroxy, alkoxy, acyloxy, alkyl carbonyl, alkoxycaryl or --NR".sub.2 ;R: alkyl, alkenyl, aryl, alkaryl, or aralkyl;R': alkylene, arylene or alkylene arylene;R": hydrogen, alkyl or aryl;A: O, S, PR", POR", NHC(O)O or NHC(O)NR";B: straight chain or branched organic group, which is derived from a B' compound with at least one C.dbd.C double bond for c=1 and A=NHC(O)O or NHC(O)NR") or at least two C.dbd.C double bonds, and 5 to 50 carbon atoms;a: 1, 2 or 3;b: 0, 1 or 2;c: 0 or 1;x: whole number, whose maximum value corresponds to the number of double bonds in compound B' minus 1, or is equal to the number of double bonds in compound B', when c=1 and A stands for NHC(O)O or NHC(O)NR";are suitable to prepare homo and copolycondensates and homo or copolymers according to the sol-gel method or by photochemical or thermal polymerization.

Abstract: A two step process, each of the steps being novel, for the production of trifluorovinyl ethers by reaction of a siloxane with selected acyl fluorides or carboxylic anhydrides, is disclosed. Also disclosed is a novel silyl ester intermediate.

Abstract: A process for the preparation of acyloxysilanes. The process comprises contacting a chlorosilane with a carboxylic acid in a film forming an equilibrium mixture of acyloxysilane and hydrogen chloride. The film is heated at a temperature sufficient to cause vaporization of the hydrogen chloride from the equilibrium mixture thereby increasing the yield of acyloxysilane in the equilibrium mixture. In a preferred process, the process is run in a falling-film type reactor or a wiped-film type reactor.

Abstract: Anionically polymerizable monomers containing at least one silicon or titanium atom form polymeric photoresists having good dry etch resistance for use in microlithography. The monomers are of the formula ##STR1## wherein A is --H or --CH.dbd.CH.sub.2 ; X is a strong electron withdrawing group;Y is a strong electron withdrawing group containing at least one silicon or titanium atom.Preferably Y is ##STR2## wherein n is 1-5 and R.sup.2, R.sup.3 and R.sup.4 are C.sub.1 -C.sub.10 alkyl. A particularly preferred monomer is 3-trimethylsilylpropyl 2-cyanoacrylate.Methods for applying a resist coating by vapor deposition of these monomers and exposure to radiation are described. A positive or negative tone image can be produced, depending upon the imaging method employed. The imaging layer may be applied over a planarizing layer to form a multilayer photoresist.

Abstract: The present invention discloses pesticidally active compounds of formula (II) ##STR1## or a salt thereof, wherein Q is an monocyclic aromatic ring, or fused bicyclic ring system of which at least one ring is aromatic containing 9 or 10 atoms of which one may be nitrogen and the rest carbon each ring system being optionally substituted, or Q is a dihalovinyl group or a group R.sup.6 --C.tbd.C-- where R.sup.6 is C.sub.1-4 alkyl, tri C.sub.1-4 alkylsilyl, halogen or hydrogen; R.sup.2, R.sup.3 , R.sup.4 and R.sup.5 are the same or different with at least one being hydrogen and the others being independently selected from hydrogen, halo, C.sub.1-4 alkyl or C.sub.1-4 haloalkyl; and R.sup.1 is selected from hydrogen and C.sub.1-8 hydrocarbyl optionally substituted by dioxalanyl, halo, cyano, trifluoromethyl, trifluoromethylthio or C.sub.1-6 alkoxy and X.sup.1 is hydrogen, fluoro or chloro.

Abstract: A chiral catalyst is disclosed together with methods of using it for enantioselective syntheses. The chiral catalyst includes a nucleus with two metal atoms that has four bridging ligands oriented radially to the axis of the nucleus. Each of these ligands includes a two complexing atoms each complexed to one of the metal atoms. At least one of the bridging ligands includes a chiral center which is bonded to one of the complexing atoms. Preferably, all four of the bridging ligands include a chiral center bonded to one of the complexing atoms. The catalyst of the invention has been found to be useful in catalyzing carbenoid transformation reactions such as cyclopropanation.

Abstract: A fluoroalkyl group-containing organosilicon oligomer is represented by the following formula (I) or (IV) of: ##STR1## wherein R, R.sub.1, R.sub.2, X and Y each are the same or different groups and stand for an alkyl, alkoxy or alkylcarbonyloxy group having 1 to 10 carbon atoms, n represents an integer of 1 to 3, m.sub.1 and m.sub.3 represent an integer of 1 to 10, m.sub.2 represents an integer of 0 to 10, m.sub.4 represents an integer of 1 to 5 and R.sub.F represents --CF.sub.2).sub.n.sbsb.1 A or ##STR2## where A stands for a hydrogen atom, a fluorine atom or a chlorine atom, n.sub.1 represents an integer of 1 to 10 and n.sub.2 represents an integer of 0 to 8. A surface treating agent contains the oligomer defined by the formula (I) or (IV).

Abstract: A fluorine-containing organosilicon compound according to the present invention is expressed by the general formula: ##STR1## wherein Rf is a perfluoropolyether group having 3 to 17 carbon atoms, R is an alkylene group having 1 to 6 carbon atoms or an ether group expressed by the general formula:--R.sup.1 --O--R.sup.2 --wherein R.sup.1 and R.sup.2 may be the same or different and are each alkylene groups having 1 to 6 carbon atoms. The fluorine-containing organosilicon compound is highly useful as a curing agent for organopolysiloxane compositions that are condensation curable at room temperature.

Abstract: The process for preparing a high molecular weight organopolysiloxane comprises subjecting a hydroxyl-containing organosiloxane, as a starting material, to a dehydration condensation reaction in the presence of an acidic compound selected from the acidic compounds represented by the following general formulas (1) and (2): ##STR1## wherein in the formulas n is an integer of from 1 to 10, k is an integer of from 0 to 8, and 1 and m are each an integer of 0 or above, with 1+m being in the range from 1 to 10. The process is advantageous over the conventional methods in that compounds having toxicity or the like are neither used nor by-produced. The process also has the merit of easy control of the molecular weight of the intended organopolysiloxane.

Abstract: Di-tert.butoxydiacetoxysilane is prepared by reacting tetraacetoxysilane with tert.butanol at a reaction temperature of up to 60.degree. C., and the resulting di-tert.butoxydiacetoxysilane is isolated.

Abstract: Novel fluorinated carboxylic acid derivatives of the general formula: ##STR1## wherein Rf is a divalent perfluoroalkyl or perfluoropolyether group and Z is halogen, hydroxyl or triorganosiloxy are useful intermediate for the synthesis of various fluorinated compounds. Compounds [I-i] wherein Z in formula [I] is F are prepared by reacting acid fluoride-terminated compounds of the formula: ##STR2## with an alkali fluoride and further with an allyl halide. Compounds [I-ii] wherein Z in formula [I] is a halogen are preparred by reacting compounds [I-i] with lithium halide. Compounds [I-iii] wherein Z in formula [I] is OH are prepared through hydrolysis of compounds [I-ii]. Compounds [I-iv] wherein Z in formula [I] is triorganosiloxy are prepared by reacting compounds [I-iii] with a triorganosilylating agent.

Abstract: Acyloxysilanes and carboxylic acid chlorides can be prepared simultaneously and continuously from organochlorosilanes and monocarboxylic acid anhydrides. Catalytically active amounts of organic bases soluble in the reaction mixture, their salts or organic acid amides are employed here.

Abstract: A cycloalkoxysilane, having utility as an electron donor in the Ziegler-Natta polymerization of olefinic monomers, of the structure(R'O).sub.x (R').sub.y Si(OR).sub.4-x-ywherein R is independently selected from the group consisting of alkyl radicals having 1 to 5 carbon atoms and acyl radicals having 2 to 5 carbon atoms, R' is independently selected from the group consisting of a cyclopentyl radical, a cyclohexyl radical a cycloheptyl radical, and substituted radicals thereof, x is 1, 2, 3 or 4 and y is 0, 1 or 2.

Abstract: There is disclosed an organopolysiloxane having a molecular weight of 200 to 100,000 which contains at least one silicon-bonded, chloroformyl group-containing organic group, said organopolysiloxane being prepared by reacting (I) the corresponding organopolysiloxane which contains at least one silicon-bonded, triorganosiloxycarbonyl group-containing organic group; and (II) an inorganic halide, such as thionyl chloride. By virtue of its highly reactive chloroformyl group, the organopolysiloxane of the invention find utility as modifiers for polyamide resins, polyester resins, and the like.

Abstract: A process and intermediates useful for the preparation of (E)-alkene dipeptide isosteres are disclosed.

Abstract: This invention relates to silicone surfactants, and more particularly, to synthesis of siloxane-polyether surfactants having polyether backbones.

Abstract: Compositions containing an acryloxysilane or a methacryloxysilane and an N,N-dialkylaminomethylene phenol in an amount at least sufficient to inhibit polymerization of the silane during its formation, purification and storage. Methods for producing such compositions are also provided.