Abstract: A novel coating for glass with an adhesive strength of >45 Kg/cm.sup.2 and improved resistance to moisture and sunlight, which may contain opacifying pigments for decorating glass surfaces, is a hard (Shore D 84), crosslinked siloxane-urea, siloxane-urethane, siloxane-sulfide or siloxane-amide which adheres covalently to the glass surface and is resistant to scratching and delamination.

Abstract: Compounds useful for improving the intra-film binding of micaceous particulates in films formed from coating compositions which contain such micaceous particulates comprise urethanes or ureas which are the reaction products of silylalkyl- or silylaryl isocyanates with blocked or unblocked alcohols, aminoalcohols, or polydiol alcohols. The compounds may also be the reaction products of silylalkyl- or silylarylamines with half-blocked diisocyanates which are themselves the reaction products of a diisocyanate with a blocked or unblocked alcohol, aminoalcohol, or polydiol alcohol.Micaceous particulates which have been surface modified by reaction with these compounds, as well as coating compositions comprising such surface-modified micaceous particulates, and coated substrates are also disclosed.

Abstract: The invention relates to a series of novel silicone alkanolamides a process or their preparation and the application of these materials in textile and personal care applications. This class of compounds are prepared by the reaction of a orboxy silicone and an alkanolamine. The products provide unique solubility in many organic solvents as well as being very substantive to hair skin and fiber. The compounds are useful or conditioning hair, skin and fiber and are particularity useful in personal care products like two in one shampoos.

Abstract: An aqueous glass fiber sizing composition acetate file former and an effective amount of a lubricant additive having the formula: ##STR1## where R is an alkyl or alkenyl group of 6 to 20 carbons, A is a divalent organic--S--or--NH--group, R.sup.1 is an alkyl group of 1 to 4 carbons, m is or 1 and n is 0 to 10 with the proviso that when n is O, m is also O.

Abstract: Novel tert-alkyl carbamate silicon compounds are provided which are useful as coupling agents. The compounds have the formulas: ##STR1## wherein the R groups can represent various hydrocarbon and other groups, n has a value of 1 to 10, b has a valueof from 2 to 5 and a has a value of 1, 2 or 3.Processes are also provided for the preparation of the carbamate compounds and their use as coupling agents.

Abstract: This invention provides a process for making a silylorganocarbamate or a silylisocyanurate which process comprises reacting an aminosilane with a dialkyl carbonate, diaryl carbonate or a mixture thereof in the presence of a basic catalyst to obtain the silylorganocarbamate; optionally, neutralizing the basic catalyst and residual aminosilane with a neutralizing agent; and adding a cracking catalyst and heating at subatmospheric pressure to obtain the silylisocyanurate; or heating a silylorganocarbamate at a temperature sufficient for dissociation of the carbamate at subatmospheric pressure in the presence of a cracking catalyst and a timerization catalyst to obtain a silylisocyanurate.

Abstract: The present invention provides novel fluorinated acrylamide silane monomers which are useful as adhesion promoting agents in optical fiber cladding compositions. Polymerization of the novel monomers, optionally in the presence compatible ethylenically-unsaturated monomers, provides homopolymers and copolymers which are useful as non-wetting agents.

Abstract: The invention relates to copolymers of siloxanes with the formula:(R.sub.a).sub.3 SiO(V).sub.v --(W).sub.w --(Y).sub.y --(Z).sub.z --Si(R.sub.a).sub.3whereV=SiR.sub.a R.sub.b O--;W=SiR'.sub.a (R.sub.c --R.sub.d --OCH.dbd.CH.sub.2)O--;Y=SiR.sub.a R.sub.g O--;Z=R.sub.a R.sub.g SiC.sub.n H.sub.2n R'.sub.f C.sub.n H.sub.2n SiR.sub.a R.sub.g O-- where n=2, 3 or 4;v, y, z=0 or an integer, w.noteq.0 with v+y+z.noteq.0;R.sub.a =alkyl or phenyl; R.sub.b =R.sub.a ; R'.sub.a =R.sub.a or alkoxy; R.sub.c =alkylene, for example:R.sub.d =--OCONHR.sub.e NHCO--, --NH--COOC.sub.2 H.sub.4 --, or --NHCOOC.sub.3 H.sub.6 --;R.sub.e =divalent hydrocarbon radicals; R.sub.g, R.sub.f and R'.sub.f are fluorinated or perfluorinated radicals.The above copolymers are used for the preparation of antiadhesive coatings, for example on paper.

Abstract: Silicon and aluminum N,N-dialkylcarbamates are prepared by reacting a secondary amine and CO.sub.2 with respectively a silicon and an aluminum halide in a reaction medium consisting of an organic solvent and then hydrolyzed by treatment with water in an anhydrous organic solvent.

Abstract: A silicone compound of the rational formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently a hydrogen atom or a hydrocarbon radical free from acetylenic unsaturaiton; Z is --O--, --S-- or --NH--; Y is a divalent organic group; R.sup.3 is a hydrogen atom, an akyl, alkenyl, alkoxy or phenyl group; and m and n are rational numbers satisfy the ration of 4>m+n.gtoreq.2. The compound is useful as a precursor of nonemanating, self-curing and heat resistant silicone resins.

Abstract: Polydiorganosiloxane/thiuram disulfide block copolymers having the formula: ##STR1## well adapted as "polyiniferters" in the radical polymerization of vinyl monomers, e.g., the (meth)acrylates or styrene, are prepared by reacting a corresponding .alpha.,.omega.-(amino)diorganopolysiloxane with CS.sub.2 in the presence of a tertiary amine and an oxidizing agent, e.g., iodine.

Abstract: Compounds of general formula I ##STR1## wherein R.sup.2 is hydrogen unsubstituted C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkyl substituted by --OH, --CN or by --Si(OR.sup.3).sub.3-q R.sup.4.sub.q, or C.sub.2 -C.sub.6 alkenyl,R.sup.3 is C.sub.1 -C.sub.4 alkyl, or two radicals R.sup.3 together are C.sub.1 -C.sub.4 alkylene,R.sup.4 is C.sub.1 -C.sub.4 alkyl or phenyl, andq is from 0 to 2, andE is a radical of the formula ##STR2## wherein R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl andR.sup.6 is hydrogen, orR.sup.5 and R.sup.6 together are C.sub.4 -C.sub.8 alkylene, orandA is --(CH.sub.2).sub.r --O--, wherein r is 1,2 or 3, and p is 0 or 1, andY is oxygen or sulfur; andwhereinT is a radical --R.sup.9 --Si(OR.sup.3).sub.3-q R.sup.4.sub.q, a radical of the formula ##STR3## X is --S-- or --NH--, and Z is an organic radical derived from a polyisocyanate or polyisothiocyanate having at least 2 NCO or NCS groups, respectively,are suitable as adhesion promoters, especially for moisture-curing polyurethane resins.

Abstract: A silylation reagent is useful for preparing binders which are soluble in aqueous alkali and contain silanyl groups in the side chain, comprises a compound having the formula I(A-B.sub.n).sub.m C (I)whereinA denotes a silanyl group containing at least 2 silicon atoms in total linked to each other, but not more than 3 silicon atoms linked to each other in an unbranched chain of silicon atoms;B denotes a bridging group;C denotes a functional group which is capable of forming a covalent bond with an aromatic, aliphatic or cycloaliphatic hydroxyl group;n denotes 0 or 1; andm denotes 1 or 2.Binders prepared with the silylation reagents described are soluble in aqueous alkali and exhibit a high resistance to plasma etching and a high storage stability, and are resistant to rediation with a wavelength of greater than 300 nm.

Abstract: Novel iminosilanes of the general formula Ia or Ib ##STR1## in which R.sub.1 is alkyl, cycloalkyl or aralkyl containing at least on the .alpha.-C atom substituents which are inert towards isocyanate groups, so that no hydrogen atom is present on this C atom, R.sub.2 is as defined for R.sub.1 or is hydrogen, or R.sub.1 and R.sub.2 , together with the common C atom, form a cyclohexylene ring which has on the two C atoms substituents which are inert towards isocyanate groups, R.sub.3 to R.sub.7 are organic radicals, p is 0,1 or 2, m is 1 or 2, n is an integer from 1 to 5 and X is --S-- or --NH--, are described.

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

Abstract: The present invention relates to N,N-disubstituted compounds containing urethane groups and terminal hydroxyl groups corresponding to the general formula ##STR1## wherein X is the residue of a strong memobasic or polybasic acid remaining after dissociation of the proton or protons of said acid or a hydroxyl group;Y is an n-functional hydrocarbon group having a molecular weight of from about 15 to about 8000 (preferably from about 300 to about 4000) and optionally interrupted by oxygen, sulfur, or silicon atoms, or by ester, carbonate, urea, N-monosubstituted urethane, or N,N-disubstituted urethane groups;1.sub.R hydrogen or a hydrocarbon group having a molecular weight of from about 15 to about 200;2.sub.R is the radical of an alkylating or arylating agent; and is an integer of from 2 to about 6.The present invention further relates to a process for preparing such compounds and to a method for using such compounds in the production of plastics.

Abstract: One-component, moisture-curable sealant compositions having fast cure times comprise a mixture of a silane-capped polyurethane polymer, an aminosilane cross-linking agent, and a silyl-substituted guanidine accelerator.

Abstract: Iniferter prepared release coating compositions comprising vinyl-siloxane block copolymer and blends thereof with other polymeric materials on sheet materials and the backside of adhesive tapes are provided. Controlled and predictable release is obtained through variation of the molecular weight and weight percent of the siloxane block as well as the molecular weight and composition of the vinyl block or blocks.

Abstract: A novel N-substituted peptidyl compound represented by the general formula (1): ##STR1## where R.sub.1 is a straight-chained or branched acyl group having 2-10 carbon atoms, a branched, cyclic or partly branched cyclic alkyloxycarbonyl group having 4-15 carbon atoms, a substituted or unsubstituted benzyloxycarbonyl group, a 2,2,2-trichloroethyloxycarbonyl group, a 2-(trimethylsilyl)ethyloxycarbonyl group, a p-toluensulfonyl group, an o-nitrophenylsulfenyl group, a diphenylphosphonothioyl group, a triphenylmethyl group, a 2-benzoyl-1-methylvinyl group or a 4-phenylbutyryl group; R.sub.2 is a hydrogen atom or when taken together with R.sub.1, may form a phthaloyl group; R.sub.3 is an isobutyl group, a n-butyl group or an isopropyl group; R.sub.4 is a butyl group, a benzyl group or a methylthioethyl group; and R.sub.5 is a hydrogen atom or a chloromethyl group, which inhibits the activity of cysteine proteinases.

Abstract: Silicon and aluminium N,N-dialkylcarbamates are prepared by reacting a secondary amine and CO.sub.2 with respectively a silicon and an aluminium halide in a reaction medium consisting of an organic solvent. The respective hydrolysis products are obtained from said N,N-dialkylcarbamates by treatment with water in tetrahydrofuran.

Abstract: A dithiocarbamate group-containing polysiloxane represented by the following general formula (I): ##STR1## wherein X.sup.1, X.sub.2 and X.sup.3 each stand for: (a) a dithiocarbamate-containing group represented by the formula: ##STR2## wherein R.sup.8 and R.sup.9 each denote a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and R.sup.10 stands for a benzyl-containing group ##STR3## with a being a natural number of 1 to 10 or an alkylene group having 1 to 10 carbon atoms,(b) a dithiocarbamate group represented by the formula: ##STR4## wherein R.sup.11 and R.sup.12 each denote a hydrogen atom or an alkyl group having 1 to 10 carbon atoms,(c) a hydrocarbyl or hydrocarbyloxy group having 1 to 10 carbon atoms,(d) a fluoroalkyl group having 1 to 10 carbon atoms and 1 to 17 fluorine atoms, or(e) a hydroxyl group; provided that at least one of X.sup.1, X.sup.2 and X.sup.3 is the dithiocarbamate-containing group (a) or the dithiocarbamate group (b); andR.sup.1 to R.sup.

Abstract: Novel monomers of the general formula ##STR1## where b is 0 or 1, a is 1, 2, 3 or 4, R.sup.2 is a monovalent alkyl radical and R is an organic radical. The novel monomers may be employed to produce novel copolymers useful as hydrogel, soft non-hydrogel and/or rigid gas permeable contact lens materials.

Abstract: Disclosed are thioglycolamide functional siloxanes and their salts which are prepared from the reaction between an amine-functional siloxane and thioglycolic acid or a thioglycolic ester. These materials are useful as reducing agent in the perming process. They are also useful in conditioning the hair.

Abstract: The present invention provides novel siloxane iniferter compounds, block copolymers made therewith, and a method of making the block copolymers. The siloxane iniferter compounds can be represented by the formula ##STR1## wherein T and X are organic groups selected so that the T-X bond is capable of dissociating upon being subjected to an appropriate energy source to form a terminator free radical of the formula T and an initiator free radical.r.sub.1, R.sub.2, R.sub.5 and R.sub.6 are monovalent moieties selected from the group consisting of hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy and aryl which can be the same or are different;R.sub.3 and R.sub.4 are monovalent moieties which can be the same or different selected from the group consisting of hydrogen, C.sub.1-4 alkyl, C.sub.

Abstract: An improved process for preparing trialkylsilyl ester and acid halide derivatives of carboxylic acids is provided along with novel trialkylsilyl ester intermediates of 2-(2-furyl)-2-methoximinoacetic acid.

Abstract: A polish formulation containing as components at least one member selected from the group consisting of waxes, solvents, surfactants, thickening agents, abrasives, dyes, odorants, and other ingredients normally used in making polishes, and as an improvement incorporating a composition which is the reaction product of an acid anhydride and an aminofunctional siloxane. The resulting zwitterionic aminofunctional siloxane can, if desired, be further reacted with a strong acid to provide an equilibrium of the zwitterion and a conjugate acid base pair of the zwitterion and the acid. The invention also includes a method of sheeting water on a surface with the polish, a method of making an aminofunctional siloxane zwitterionomer, and an aminofunctional zwitterionomeric siloxane compound which is the reaction product.

Abstract: Linear silicone-urethane copolymers which contain tertiary amine or quaternary ammonium groups on the polymer backbone of the general formula:{R'NR"SiMe.sub.2 (OSiMe.sub.2).sub.b OSiMe.sub.2 R"NR'CONHR"NHCO.sub.2 (Y)O.sub.2 CNHR"NHCO}wherein Me represents a methyl group; R' represents a hydrogen atom or a lower alkyl group having one to three carbon atoms; R" represents a divalent hydrocarbon group having at least three carbon atoms such as (CH.sub.2).sub.3-12 ; and Y represents (C.sub.z H.sub.2Z+1 N) where Z.gtoreq.5 and .ltoreq.22 and may be quaternized by use of a quaternizing agent R'X wherein X is selected from the group consisting of a halide atom, an acetate or higher carboxylate group, and an alkylsulfate group where the alkyl moiety has 1 to 12 carbon atoms and where R', R" and b may vary within each copolymer are described.

Abstract: A compound of formula I ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.4 alkyl, phenyl or benzyl,R.sub.2 is C.sub.1 -C.sub.4 alkyl, phenyl or benzyl,a is 0, 1 or 2,R.sub.3 is linear or branched unsubstituted or OH-substituted C.sub.1 -C.sub.12 alkylene or is phenylene,R.sub.5 is the divalent radical, diminished by the --CO--O group, of a lactone having a total of 4 to 7 ring members and containing at least one chiral carbon atom and corresponding predominantly to an optically active enantiomeric form,R.sub.4 is a direct bond, C.sub.1 -C.sub.4 alkyl--CH or CF.sub.3 --CH, andY is phenyl, naphthyl, fluorenyl or anthryl, each unsubstituted or substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, halogen, --CN or --NO.sub.2.These compounds are suitable for the preparation of stationary phases for the chromatographic separation of chiral compounds.

Abstract: Compounds of formula I ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.4 alkyl, phenyl or benzyl,R.sub.2 is C.sub.1 -C.sub.4 alkyl, phenyl or benzyl,a is 0, 1 or 2,R.sub.3 is linear or branched unsubstituted or OH-substituted C.sub.1 -C.sub.12 alkylene or is phenylene,X is --O--, --X-- or --NR.sub.6, wherein R.sub.6 is H, C.sub.1 -C.sub.4 alkyl or --CO--R.sub.5 --OH,b is 0, orb is an integer from 1 to 6 and R.sub.4 is linear or branched unsubstituted or OH-substituted C.sub.1 -C.sub.12 alkylene,Y is --O--, --S-- or --NR.sub.7, wherein R.sub.7 is H or C.sub.1 -C.sub.4 alkyl,R.sub.5 is the divalent radical, diminished by the --CO--O group, of a lactone having a total of 4 to 7 ring members and containing at least one chiral carbon atom and corresponding predominantly to an optically active enantiomeric form, and e is an integer from 1 to 10.These compounds are suitable for the preparation of stationary phases for the chromatographic separation of chiral compounds.

Abstract: The invention relates to carbonates of formula: ##STR1## in which X is a fluorine, chlorine or bromine atom and R.sup.1 is different from the ##STR2## group and represents: a substituted or non-substituted, saturated or unsaturated, aliphatic, araliphatic, primary, secondary, tertiary or cycloaliphatic radical. These .alpha.-chlorinated carbonates are prepared by the action of a compound of formula R.sup.1 OH on a chloroformate of formula: ##STR3## in a solvent medium in the presence of an acid scavenger which is added after the two preceding compounds. They are used to block the amine function of amino acids. The .alpha.-chlorinated carbonate and amino acid are reacted in a solvent medium at a temperature of -5.degree. to 100.degree. C. in the presence of an acid scavenger. Blocked amines are very useful in peptide synthesis.

Abstract: A liquid polymer which is rapidly curable, at room temperature, to a solid hydrolytically stable elastomer having high tensile and tear strengths, said liquid polymer having the formula: ##STR1## wherein R is a liquid polymeric backbone selected from the group consisting of polyether and polythioether, said backbone having a number average molecular weight of at least 1,500 and having no carboxyl or hydroxyl groups; R.sup.1 is lower alkyl, R.sup.2 is lower alkyl, R.sup.3 is a divalent organic radical having no sulfur atoms, R.sup.4 is alkylene of from 3 to 6 carbon atoms, and which separates the oxygen atom from X by at least 3 carbon atoms, X is sulfur or --S--R.sup.5 --S-- wherein R.sup.5 is alkylene having from 2 to 12 carbon atoms, alkylene thioether of from 4 to 12 carbon atoms or hydrocarbon ether of from 4 to 20 carbon atoms, p is 2 to 4, m is 1 to 3, n is 0 to 2 and the sum of m and n is 3. There is also disclosed a method for curing such liquid polymers.

Abstract: A process for producing a silane or siloxane compound containing at least one cycloalkyl ring by hydrogenation of a corresponding derivative containing at least one aromatic ring in the presence of a Raney nickel catalyst modified with chromium.

Abstract: One-component, moisture-curable sealant compositions having fast cure times comprise a mixture of a silane-capped polyurethane polymer, an aminosilane cross-linking agent, and a silyl-substituted guanidine accelerator.

Abstract: A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F); the prepolymer (C) having the formula (I): ##STR1## and the prepolymer (F) having the formula (III): ##STR2##The curable resin of our invention has excellent flexibility, solvent resistance and adhesion to organic materials. Furthermore our process for preparing the resin is simpler, more easily reproducible, and results in less unwanted by-prodducts than earlier processes for preparing similar silane resins.

Abstract: Product of condensation of a silanol or a silanol derivative, which comprises an Si atom carrying two organic radicals and two oxygen atoms connected to organic groups other than the radicals; at least one of these organic groups carries at least one NH and a NH.sub.2.

Abstract: Organometal-containing styrene derivatives of the formula I ##STR1## in which, for example, M is Si, X is 0, R.sup.1 and R.sup.2 are hydrogen, R.sup.4 to R.sup.6 are each methyl, a is zero and R.sup.7 is hydrogen or methyl, and organometal-containing compounds of the formula VII ##STR2## in which M and R.sup.1 to R.sup.6 are, for example, as defined above and Y is, for example, 4-nitrophenoxy, are valuable starting materials for the preparation of organometal-containing polymers. The polymers are suitable for the preparation of photoresists which can be developed under dry conditions, such as are required in the production of structured images, particularly in microelectronics.

Abstract: An antifoamer which comprises a polyperfluoroether group-containing organopolysiloxane comprising from 20 to 100 mole % of the polyperfluoroether group-containing organopolysiloxane units of a specific type is described. The content of fluorine atoms in the polyperfluoroether group-containing organopolysiloxane is in the range of from 20 to 70 wt % by which foams of organic solvent systems can be inhibited to a substantial extent.

Abstract: A polish formulation containing as components at least one member selected from the group consisting of waxes, solvents, surfactants, thickening agents, abrasives, dyes, odorants, and other ingredients normally used in making polishes, and as an improvement incorporating a composition which is the reaction product of an acid anhydride and an aminofunctional siloxane. The resulting zwitterionic aminofunctional siloxane can, if desired, be further reacted with a strong acid to provide an equilibrium of the zwitterion and a conjugate acid base pair of the zwitterion and the acid. The invention also includes a method of sheeting water on a surface with the polish, a method of making an aminofunctional siloxane zwitterionomer, and an aminofunctional zwitterionomeric siloxane compound which is the reaction product.

Abstract: A silicon-urethane (meth) acrylate which is a reaction product of an isocyanato-alkylsilane compound represented by the following general formula: ##STR1## wherein R.sub.1 represents an alkylene group having 2 to 5 carbon atoms, R.sub.2 represents an alkyl group having 1 to 5 carbon atoms or alkoxy group having 1 to 5 carbon atoms, and R.sub.3 and R.sub.4 each represents an alkyl group having 1 to 5 carbon atoms, and a hydroxyl group-containing ester of (meth) acrylic acid, a resin composition and a coating material for optical glass fiber comprising said silicon-urethane (meth) acrylate.

Abstract: A process for making 2,6-disubstituted tyrosine by the noble metal coupling of a disubstituted aromatic halide or diazonium salt with an amino-protected 2-aminoacrylic acid to form a (Z)-.beta.-(disubstituted phenyl)-.alpha.-acylaminoacrylate, and asymmetrically hydrogenating the acrylate to produce the 2,6-disubstituted tyrosine.

Abstract: The novel urethanes are composed essentially of fluoroalcohol-isocyanate adducts as the fluoro component and a polysiloxane component, the two components being combined in a structurally specific manner. The novel urethanes are prepared by reacting the fluoroalcohol-isocyanate adducts with the polysiloxane in a molar ratio of 1 to 2:1 at a temperature of 30.degree. to 130.degree. C. The novel urethanes are preferably used for finishing textiles, to which they also impart the property of a soft handle in addition to good hydrophobicity and oleophobicity. They are also suitable for finishing leather, skins and wood.

Abstract: An organosilicon compound represented by the general formula (I): ##STR1## wherein R.sup.1 may be the same or different and represents an alkyl group having 1 to 8 carbon atoms; R.sup.2 and R.sup.3 may be the same or different and represents an alkylene group having 1 to 8 carbon atoms; and R.sup.4 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms,and a process for preparing the same. This compound is useful for improving adhesive properties of UV curable silicone compositions and the like.

Abstract: Organopolysiloxane products containing acyl thiourea groups and from the units: ##STR1## are disclosed. R.sup.1 stands for an optionally substituted phenyl group or an alky group and R.sup.2 and R.sup.3 forR.sup.4 --SiO.sub.3/2 (2)units. R.sup.4 is alkylene. The free valences of the oxygen atoms are saturated by Si atoms of further R.sup.4 --SiO.sub.3/2 groups and/or by Si atoms of: ##STR2## amine units, wherein R.sup.5 =H; R.sup.2 or R.sup.3 and/or by cross-linking compounds of Si, Ti or Al. The ratio between the Si atoms in (1) and (3) to the Si, Ti, Al cross-linking atoms is 1:0 to 1:10. Various methods of preparing the products are described. These polymers to separate metals from solutions.

Abstract: New (meth)-acrylates of siloxanes containing tricyclodecane groups having the formula ##STR1## are prepared by reacting poly(hydroxymethyl-tricyclo [5.2.1.0.sup.2.6 ]decanyl)siloxanes, or the alkylene oxide adducts thereof with (meth)acrylic acid or a derivative thereof or with an isocyanato (meth)acrylate.These compounds can be employed as monomers to prepare polymers and dental materials.

Abstract: A t-butyldimethylsilyl carbamate derivative and a process for producing the same are disclosed. Tertiary-butyldimethylsilyl carbamate derivatives having the following general formula (1) are intermediates for the production of a variety of carbamate esters that can be extensively used as drugs acting on the central nervous system or circulatory organs, as agrichemicals (e.g. insecticides and herbicides), or as antimicrobial agents; a process capable of economical and efficient production of such intermediates is also disclosed: ##STR1## where R.sup.1 is an alkyl group having 1-3 carbon atoms or a hydrogen atom; R.sup.2 is ##STR2## (where R.sup.3 is a hydrogen atom, an alkyl, alkenyl or aralkyl group having 1-10 carbon atoms, each of which groups may be substituted by a hydroxyl group, a t-butyldimethylsilyloxy group, a methylthio group, a lower alkoxycarbonyl group, a lower alkoxy group, an indolyl group or an imidazolyl group; R.sup.

Abstract: The invention relates to new compounds of the general formulae (I) and/or (II), ##STR1## wherein R.sup.1 is a C.sub.1-6 alkyl or an aralkyl group, andR.sup.2 is hydrogen or a C.sub.1-6 alkyl group.According to another aspect of the invention there are provided processes for the preparation of these compounds.The compounds of the general formulae (I) and/or (II) are utilizable for the oxymation and/or trimethylsilylation of any substrate bearing an oxo group and/or a silylable polar hydrogen.The compounds of the general formula (VI):(CH.sub.3).sub.3 Si--Y--Z=N--OR.sup.1 (VI)whereinR.sup.1 is as defined aboveY is oxygen, nitrogen or sulphur atom or a carboxylate anion, andZ is the skeleton of the substrate,said compounds being formed in the oxymation and/or trimethylsilylation reaction, are also within the scope of the invention.

Abstract: This application relates to a stereospecific process for preparing specific enantiomers of 4-amino-4,5-dihydro-2-furancarboxylic acid and C.sub.1-6 lower alkyl esters thereof. These compounds are .gamma.-aminobutyric acid transaminase inhibitors useful in the treatment of epilepsy.

Abstract: This invention relates to chiral compositions.

Abstract: Novel substituted organosilicon carboxylates characterized by the following formula: ##STR1## wherein M is a monovalent cation: Z represents a moiety hydrolyzable to silanol; R.sup.

Abstract: There is here provided a modifier for a resin containing an active hydrogen capable of reacting with an isocyanate group. The modifier of the present invention can give characteristics such as low frictional properties, water repellency, oil repellency and antithrombotic properties to the resin, and when the modifier of the present invention is used, neither bleeding phenomenon nor deterioration in mechanical strength takes place.The present modifier comprises a modified polyorganosiloxane containing an isocyanate group which is represented by the general formula (A) ##STR1## wherein Me is a methyl group, Ph is a phenyl group, R is a methyl or phenyl group, R.sup.1 is H or a methyl group, each of m and n is 0 or more and a value of m+n is within the range of 0 to 600, a is 1, 2 or 3, b is 1, 2 or 3, c is a value of 1 to 300, and Q is a residue obtained by subtracting one isocyanate group from a compound having at least two isocyanate groups.