Abstract: The invention provide a class of actinically-crosslinkable silicone-containing prepolymers which comprise dangling polysiloxane chains each having a terminal ethylenically-unsaturated group and are obtained in a one-step of RAFT polymerization of a reactive mixture comprising a polysiloxane crosslinker, a hydrophilic vinylic monomer, a RAFT agent, and a free-radical initiator. The present invention is also related to silicone hydrogel contact lenses made from a prepolymer of the invention and methods for making the contact lenses in a cost-effective way and with high consistency and high fidelity to the original lens design.

Abstract: A prepolymer for biomedical materials has the following formula: wherein X1 represents aliphatic compounds or aromatic compounds, X3 represents alkene-containing compounds, and X2 represents siloxane compounds having the following formula. In one embodiment of the present invention, n is between 1 and 20, m is between 10 and 20, and y is between 1 and 7.

Abstract: A coating composition comprising a Photocatalyst Composition comprising a photocatalyst and a pendent silyl ester group, wherein the photocatalyst produces singlet oxygen in the presence of light and ambient air. In certain embodiments, the coating composition further comprises a singlet oxygen scavenger.

Abstract: The invention relates to compounds having the general formula (I), the method of preparation thereof and the use thereof in organic radical synthesis. The invention also relates to compounds having the formula (II), the method of preparation thereof and a method for preparing compounds having the formula (VIII).

Abstract: The present invention provides a contrast agent which ensures 1) high contrast performance, 2) low toxicity, and 3) a simple production process. The present invention provides a contrast agent containing a silsesquioxane represented by General Formula (I), wherein R1, the same or different, is a substituent bonded to Si through a carbon atom, the substituent having, at its terminal, a group represented by General Formula (II), wherein p represents an integer of from 1 to 5; q is the same or different, and represents an integer of from 1 to 5; R2 is the same or different, and represents hydrogen atom, alkyl group, aralkyl group or acyl group, or a group represented by General Formula (III), wherein p, q and R2 are the same as above.

Abstract: The invention provides epoxy and oxetane compositions including the novel acyloxy and N-acyl curing agents described herein. Use of invention curing agents result in cured adhesive compositions with remarkably increased adhesion and reduced hydrophilicity when compared to resins cured with other types of curing agents. Furthermore, the curatives of this invention do not interfere with free-radical cure and are thus suited for use in hybrid cure thermoset compositions.

Abstract: The present invention provides a method of preparing a cross-condensed compound of an amino-acid derivative and (aminoalkyl) trialkoxysilane using microwave, including: irradiating and heating an amino-acid derivative and (aminoalkyl) trialkoxysilane in a microwave reactor to obtain a reaction product (step 1); and refining the reaction product obtained in the step 1 by removing an unreacted solid material from the reaction product and then leaving the reaction product at room temperature under vacuum to remove excess (aminoalkyl) trialkoxysilane therefrom (step 2). According to the method, since a cross-condensation reaction is performed using microwave, unlike a conventional condensation reaction, economic efficiency is increased due to no catalyst, short reaction time and no solvent. Further, the yield and selectivity of products is increased, and the condensation reaction can be environment-friendly performed because a solvent which can badly influence the environment may not be used.

Abstract: A crosslinker (i.e., a curing agent) for polymerizing a film-forming material. The crosslinker is an organic compound including at least two functional groups reactive with a film-forming material and at least one pendent group comprising a —Si(OR)3 group, wherein each R is independently an alkyl group including from 1 to about 12 carbon atoms or an aryl group including substituted and unsubstituted phenyl and benzyl groups. Functional groups reactive with a film-forming materials include isocyanate, blocked isocyanate, uretdione, epoxide, hydroxyl, carboxyl, ester, ether, carbamate, aminoalkanol, aminoalkylether, amide, or amine groups. Embodiments include derivatives of the various crosslinkers as disclosed elsewhere herein, where the crosslinker has at least two functional groups reactive with a film-forming material and at least one pendent group comprising a —Si(OR)3 group.

Abstract: The present invention relates to silanes, in particular amphiphilic silanes, to processes for the preparation of the silanes, to the use thereof for the surface modification of particles, and to particles whose surface has been modified by means of the silanes.

Abstract: The present invention is a fluorine-containing acrylate or alpha-substituted, fluorine-containing acrylate, represented by the following formula (1): wherein a is an integer of from 1 to 4 and b is an integer of from 1 to 4, provided that a total of a and b is 3, 4, or 5; R1 is a group represented by the following formula (2): —(C4H8O)d(C3H6O)e(C2H4O)f(CH2O)g—??(2) wherein d, e, f, and g are, independently of each other, an integer of from 0 to 4, provided that a molecular weight of R1 is in a range of 30 to 300, and these repeating units may be sequenced at random; R2 is an acryl group- or alpha-substituted acryl group-containing group having 4 to 20 carbon atoms and represented by the following formula (3): wherein R3 is, independently of each other, a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group, R4 is a divalent or trivalent linking moiety having 1 to 18 carbon atoms, optionally having an ether bond and/or an ester bond, and n is 1 or 2; Rf is a perfluoropol

Abstract: The present invention provides a compound that exhibits an excellent antitumor effect and reduces side effects, such as skin disorders, of the existing retinoid by selectively activating on the nuclear receptor RAR?, thereby possibly producing significant improvement of clinical profits. Specifically, the present invention provides a bis(trimethylsilyl)phenyl compound represented by Formula (I): wherein X is N or CH; Y is O or S; R1, R2, and R3 are the same or different and are hydrogen or lower alkyl; R4 and R5 are the same or different and are hydrogen, lower alkyl, or halogen; and a bond between a carbon atom to which R1 is attached and a carbon atom to which R2 is attached is a single bond or a double bond; or a salt thereof.

Abstract: Functionalized nanoparticles, which are obtainable by combining in a first step a functionalized dyestuff, a silicon-based spacer and a catalyst, and in a second step reacting the product obtained in the first step with a co-reactive organic silicon, aluminum, zirconium or titanium compound. Optionally, the thus obtained functionalized nanoparticles can be combined or encapsulated with a polymer. The functionalized nanoparticles are useful as colorants and fluorescents in plastics, paints, inks, electronic materials, cosmetic articles, and the like.

Abstract: The purpose of the present invention is to provide an organic silicon compound which has a vinyl group more reactive than those of the conventional organic silicon compounds and can be bonded with another compound. The present organic silicon compound is represented by the following formula (1), wherein R1 is, independently of each other, a vinyl group or an alkyl group having 1 to 4 carbon atoms, R2 is an alkylene group having 3 to 6 carbon atoms, and R3 is, independently of each other, a hydrogen atom or an alkyl group having 1 to 4 carbon atoms and optionally substituted with one or more fluorine atoms.

Abstract: The present invention is a fluorine-containing acrylate or alpha-substituted, fluorine-containing acrylate, represented by the following formula (1): wherein a is an integer of from 1 to 4 and b is an integer of from 1 to 4, provided that a total of a and b is 3, 4, or 5; R1 is a group represented by the following formula (2): —(C4H8O)d(C3H6O)e(C2H4O)f(CH2O)g—??(2) wherein d, e, f, and g are, independently of each other, an integer of from 0 to 4, provided that a molecular weight of R1 is in a range of 30 to 300, and these repeating units may be sequenced at random; R2 is an acryl group- or alpha-substituted acryl group-containing group having 4 to 20 carbon atoms and represented by the following formula (3): wherein R3 is, independently of each other, a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group, R4 is a divalent or trivalent linking moiety having 1 to 18 carbon atoms, optionally having an ether bond and/or an ester bond, and n is 1 or 2; Rf is a perfluoropolyether

Abstract: The invention provides epoxy and oxetane compositions including the novel acyloxy and N-acyl curing agents described herein. Use of invention curing agents result in cured adhesive compositions with remarkably increased adhesion and reduced hydrophilicity when compared to resins cured with other types of curing agents. Furthermore, the curatives of this invention do not interfere with free-radical cure and are thus suited for use in hybrid cure thermoset compositions.

Abstract: Disclosed is a silicon containing compound represented by Formula 1 which has high optical anisotropy and high compatibility with a polymer resin. Also, a resin composition including the compound and a polymer resin, and an optical member including the resin composition are disclosed. Since the silicon containing compound represented by Formula 1 has high compatibility with a polymer resin and high optical anisotropy, in the case of an optical member obtained by using a polymer resin composition including the silicon containing compound, there is no phase separation, and it is possible to achieve a required optical characteristic with only a small amount thereof.

Abstract: A coating composition is provided which includes an adhesion promoter or a crosslinker silane which, upon hydrolysis, of its hydrolyzable sites, produces a reduced amount of volatile organic compound compared to that produced by the hydrolysis of a silane possessing an equivalent number of hydrolyzable sites all of which are hydrolyzable alkoxy groups.

Abstract: Novel compositions of lipophilic organosulfur compounds, their preparation and use in methods for treating disease are described. Silicon confers lipophilicity that can enhance the penetration of the silicon derivative compounds across the gut wall, cell membranes and blood brain barrier, thus improving therapeutic properties including bioavailability, metabolism, and/or pharmacokinetics. The organosilyl group provides compounds having improved pharmacokinetics. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, polymorphic forms, crystalline forms or an amorphous form, pharmaceutical compositions and methods for treatment of diseases, maladies or conditions. Also disclosed are processes for making such compounds as well as intermediates useful in such processes.

Abstract: The invention relates to novel polyamide-polysiloxane compounds, processes for their preparation, their use, precursors for their preparation and reactive compositions which contain the precursors.

Abstract: The invention relates to the cosmetic use, as a skin moisturizer, of a compound of formula (I): with (i) R1 and R2 represent a hydrogen atom or a C1-C6-alkyl group, or (ii) R1 and R2 can form, together with the nitrogen atom which bears them, a saturated heterocycle with 5 to 7 ring members; R5 representing a hydrogen atom or a (C1-C3) alkyl group; R6 representing a hydrogen atom or a (C1-C4) alkyl group; R3 represents a hydrogen atom or a (C1-C6) alkyl-group, or —OR3 represents a phosphate group; it being possible for the two groups R3 to form, together, an isopropylidene group; R4 represents a hydrogen atom or —OR4 represents a-phosphate group; and the salts, solvates and isomers thereof. The invention also relates to a cosmetic composition comprising a compound (I) and the corresponding new compounds.

Abstract: Novel compositions of silicon-containing sulfhydryl compounds, their preparation and use in methods for treating disease are described. Silicon confers lipophilicity that can enhance the penetration of the silicon derivative sulfhydryl compounds across the gut wall, cell membranes and blood brain barrier, thus improving therapeutic properties including bioavailability, metabolism, and/or pharmacokinetics. The organosilyl group provides compounds having improved pharmacokinetics. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, pharmaceutical compositions and methods for treatment of diseases and other maladies or conditions and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.

Abstract: The invention generally relates to di-cinnamyl compounds useful in a variety of adhesive applications. More specifically, the invention provides chain-extended bismaleimides and methods for generating them by reaction with di-cinnamyl compounds, including particular di-cinnamyl compounds disclosed herein. Invention di-cinnamyl compounds can also be used as co-monomers in a Diels-Alder type cure, and can act as a co-monomer in a thermoset composition with a maleimide monomer.

Abstract: The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain cationic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. Such properties include the ability to extract the polymerized medical devices with water. This avoids the use of organic solvents as is typical in the art. The polymeric compositions comprise polymerized cationic hydrophilic siloxanyl monomers.

Abstract: Silanes of the formula: [(ZmRnSi—R1o—)pR2q—Y—C(X)—Y—]rG[—Y—(X)C—Y—R3]s??(I), in which m+n=3; m=1, 2 or 3; n=0, 1 or 2; o=0 or 1, and q=1 if o=0; p=1, 2, 3 or 4; q=0 or 1, and p=1 if q=0; r, s=1, 2 or 3; and Z is a hydrolyzable atom or group; R is a nonhydrolyzable group without an epoxide group; R1 is a divalent group; R2 is a (p+1)-valent group; R3 is a nonhydrolyzable, epoxy-containing group; X is an oxygen atom and/or sulfur atom; G is an (r+s)-valent cyclic group; Y is an oxygen atom, sulfur atom or imino group >NR4 where R4=hydrogen atom, group R, group (ZmRnSi—R1o—)pR2q—, group R3—, group (ZmRnSi—R1o—)pR2q—NH—C(X)— or group R3—NH—C(X)—; processes for their preparation, and their use.

Abstract: Light protective additive based on a polybranched organic/inorganic hybrid polymer manufactured by a sol-gel process and method for its manufacture, having a chemical structure: R1-R4 may be hydrogen, unsubstituted saturated or unsaturated C1-C24 alkyl, substituted saturated or unsaturated alkyl, substituted or unsubstituted aryl, halogen, hydroxyl, substituted or unsubstituted amine, aliphatic or aromatic carbonyl, or where R1-R4 are chosen among the condensation products or addition products of one or more types of chemical compositions such as acids, alcohols, phenols, amines, aldehydes, or epoxides.

Abstract: A surface modifier comprising an organosilicone compound represented by General Formula (A) and/or General Formula (B): F—(CF2)q—(OC3F4)m—(OC2F4)n—(OCF2)o(CH2)pXX?Si(X?)3-a(R1)a (A) and F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o(CH2)pXX?(X?)2-a(R1)aSiO(F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o—(CH2)pXX?(X?)1-a(R1)aSiO)zF—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o(CH2)pXX?(X?)2-a(R1)aSi(B) wherein q is an integer from 1 to 3; m, n, and o are independently integers from 0 to 200; p is 0, 1 or 2; X is oxygen or a bivalent organic spacer group: X? is a bivalent organosilicone spacer group; X? is hydrolysable group; and z is an integer from 0 to 10 when a is 0 or 1.

Abstract: Nucleating agent compounds are used in polymers, such as polypropylene, to improve both the properties and processing characteristics of the polymer. Some nucleating agents may be used also as clarifiers to reduce the visual haze in finished polymeric articles, thereby increasing clarity of finished polymeric articles. Compounds of a carboxylate salt which employ a combination of an amide group and a metal cation salt perform well as nucleating agents, and provide substantial clarity benefits in a polymer. Other compounds of the invention may employ metal carboxylate salts in combination with an ester group. In other embodiments of the invention a dimer of such compounds may be employed.

Abstract: The present invention is a process for the preparation of diphenylazetidinone derivatives of the formula (I) or forms thereof comprising the substituents X, R1 and/or R2 as defined herein. More specifically, the invention comprises methods for the preparation of these compounds by cyclization of certain ?-amino carboxamides or ?-amino carboxylic esters. These diphenylazetidinone compounds are useful in the treatment of high blood serum cholesterol levels and the maintenance of the reduced cholesterol levels achieved thereby.

Abstract: Inorganic particles hydrophobized with fluorosilanes have been used to impart hydrophobic as well as oleophobic properties as exemplified by U.S. Patent Application, US2006/0222815, filed by Oles et al. which teaches making such hydrophobized particles by the covalent bonding (i.e. grafting) of fluorosilanes upon the surface of inorganic particles (e.g. silica). The fluorosilanes employed by Oles et al. consist of a silicon atom having four bonds, three of which are direct bonds to hydrolysable groups which can react with the surface of an inorganic particle thereby covalently bonding the fluorosilane to particle. The remaining bond is a direct bond from the silicon atom to a perfluoroalkyl group. In contrast, the hydrophobized inorganic particles of the present invention comprise residues from fluorosilanes wherein the silicon atom is first bonded to a divalent organic linking group which in turn is bonded to a perfluoroalkyl group.

Abstract: The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain carboxylic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. The polymeric compositions comprise polymerized carboxylic hydrophilic siloxanyl monomers.

Abstract: Transesterified organosilicon compounds, including ionic organosilicon compounds and coupling agents, and aqueous-based compositions including transesterified organosilicon compounds are provided. Compositions comprising at least one transesterified organosilicon are suitable for application to various inorganic, organic and cullulosic surfaces for imparting water repellency and improved wetting. Compositions comprising transesterified organosilicon compounds exhibit reduced flammability, improved hydrolytic stability, reduced gloss and improved water repellency while maintaining reactivity with various substrates.

Abstract: The object of the present invention is to inexpensively produce a carrier having a hydrophilic spacer, for immobilizing biological materials, etc., which has been very expensive so far.

Abstract: Fluoroalkyl silanes are a class of compounds useful for various industrial purposes. For example, fluoroalkyl silanes which have hydrolysable groups (called hydrolysable fluoroalkyl silanes), are compounds useful as surface treatment agents which provide durable hydrophobic and oleophobic coatings. In general, hydrolysable fluoroalkyl silanes can be represented with the following formula: (RO—)3Si—RT wherein R is H or an alkyl; and RT is a monovalent organic compound terminated by a perfluoroalkyl group. When used to coat a surface, the (RO—)3 moiety reacts (via hydrolysis) with various chemical groups of the surface (e.g., hydroxyl, amine, or other reactive groups) thereby bonding the fluoroalkyl silane to the surface The RT moiety comprises a divalent organic linking group which links the silicon atom to a terminal group rich in fluorine atoms whose unique electronic properties impart desirable hydrophobic and oleophobic properties in a surface coating.

Abstract: The present invention provides novel silicon compounds, methods for making these novel silicon compounds, compositions comprising these novel silicon compounds attached to substrates, methods for attaching the novel silicon compounds to substrates and methods for using the compositions in a variety of chromatographic applications.

Abstract: The present invention relates to organoalkoxysilanes containing a urea or thiourea or carbamate or thiocarbamate group of formula (I), as well as preparation and use thereof. It further relates to a composition containing the organoalkoxysilane of formula (I). Such compositions are especially suitable as adhesives and sealants, and have high stretchability and high strength.

Abstract: ?-ketocarbonyl-functional organosilicon compounds are prepared by reacting, organosilicon compounds containing an SiC-bonded organic radical having a primary amino group, with organic ester compounds containing a group of the formula —O—C(?O)— and, reacting the product with diketenes or diketene derivatives, to produce ?-ketocarbonyl-functional organosilicon compounds containing at least one SiC-bonded radical of the formulae —R1{—N[C(?O)—CHR5—C(?O)—CH2R5]—R1}x—NH—C(?O)—(O)v—R4{—O—[C(?O)—CHR5—C(?O)—CHR5]yH}z or —R1(—NR2?—R1)x—NH—C(?O)—(O)v—R4{—O—[C(?O)—CHR5—C(?O)—CHR5]yH}z R1 is a divalent C1-18 organic radical R2 is a hydrogen atom or a monovalent C1-18 organic radical, R5 is hydrogen, v is 1, x is 0 or an integer from 1 to 10, R2? has one of the meanings of R2 with the proviso that R2? is not a hydrogen atom, y is 0 or 1, and z is 1 or 2.

Abstract: The present invention relates to novel compounds suitable for or already radiolabeled with 18F, methods of making such compounds and use of such compounds for diagnostic imaging. Such labeled compounds are characerized by Formula II, wherein the moieties F, R1, R2, B1,2, Y1,2, Z1,2 and E have the meaning as defined in the specification and claims.

Abstract: The invention relates to novel silane compounds corresponding to the formula (I) below: A-E-X??(I) in which: X represents a silyl group capable of creating a covalent bond after reaction with the hydroxyl or hydride functional groups of a support; E represents an organic spacer group; A represents a group chosen from the groups of formulae below: in which: Z1 to Z5 independently represent a hydrogen atom or a halogen atom; Z6 and Z7 represent a group for protecting the phosphonic acid functional group, a hydrogen atom or a monovalent cation; Z8 to Z12 independently represent a group for protecting the carboxylic acid functional group, a hydrogen atom or a monovalent cation; and Z13 represents an imidazole, N-hydroxysuccinimide, nitrophenyl, pentafluorophenyl or acid anhydride group. Use of these silane compounds for functionalizing solid supports and for immobilizing biological molecules on these supports.

Abstract: In one aspect, the invention relates to silicon-based prepolymers. The disclosed prepolymers exhibit satisfactory solubility in aqueous solutions or hydrophilic solutions and can overcome undesirable shrinkage, expansion, and related problems possessed by conventional silicone monomers and related conventional polymerization techniques by producing hydrogels from a crosslinkable prepolymer. Also disclosed are polymers and molded articles produced from the disclosed prepolymers, which attain a satisfactory oxygen permeability. Also disclosed are methods for producing the disclosed prepolymers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Cyclic silazanes containing an oxamido ester group and methods of making these compounds are described. The compounds can be used, for example, to make oxamido ester-terminated siloxanes, which can be precursors for the preparation of various polymeric materials such as, for example, polydiorganosiloxane polyoxamides.

Abstract: The invention relates to compounds having the general formula (I), the method of preparation thereof and the use thereof in organic radical synthesis. The invention also relates to compounds having the formula (II), the method of preparation thereof and a method for preparing compounds having the formula (VIII).

Abstract: A process is provided for preparing unsaturated imidoalkoxysilane which comprises imidating substantially water-free Diels-Alder protected unsaturated N-substituted cyclic imide with aminosilane to provide Diels-Alder protected unsaturated imidoalkoxysilane without the use of chemical desiccants. The Diels-Alder protected unsaturated imidoalkoxysilane produced is then deprotected to provide unsaturated imidoalkoxysilane and the Diels-Alder protecting diene is regenerated to the process. A Diels-Alder intermediate is also provided.

Abstract: Novel 4,4-diarylbutadiene-substituted diorganopolysiloxanes having the structural formulae (1) or (2): in which A is a radical of formula (3) below: are useful sunscreens for UV-photoprotecting human skin against the damaging effects of UV-radiation, notably UV-A radiation.

Abstract: Provided is an organosilane compound expressed by any one of the following general formulae (1) to (7): (wherein: Ar represents a phenylene group or the like; R1 represents a hydrogen atom or the like; R2 to R8 each represent a methyl group or the like; n represents an integer in a range from 0 to 2; m represents an integer of 1 or 2; L represents a single bond or the like; X represents a hydrogen atom or the like; and Y represents a hydrogen atom or the like).

Abstract: The present invention, provides novel silicon compounds, methods for making these novel silicon compounds, compositions comprising these novel silicon compounds attached to substrates, methods for attaching the novel silicon compounds to substrates and methods for using the compositions in a variety of chromatographic applications.

Abstract: Blocked silyl isocyanates contain a methylene group between the blocked isocyanate group and silicon. The blocked isocyanates are easily prepared in high yield and purity.

Abstract: The purpose of the invention is to develop a silyl linker that can be efficiently introduced on a solid-phase support used for the synthesis of nucleic acid oligomers such as DNA. The present invention relates to a silyl linker for use in the solid-phase synthesis of nucleic acid, comprised of a compound of the general formula or its ester or salt: H—(R1)Si(R2)—(C6H4)—CONH-(A)-COOH ??(I) wherein each of R1 and R2 is an alkyl or aryl group, and (A) represents a spacer moiety; a 3?-end nucleoside unit having said compound linked via an oxygen atom to the 3-position of a sugar of the nucleoside or its derivative, a solid-phase support having the 3?-end nucleoside unit, and a method for synthesis of nucleic acid oligomer with the use of said solid-phase support.

Abstract: A method of preparing a disilanol compound by hydrolyzing a dichlorosilane compound having Si—Cl bonds at both ends, characterized in that the method comprises the step of hydrolyzing the dichlorosilane compound in the presence of a tertiary amine compound.

Abstract: The present invention relates to an acrylic pressure sensitive adhesive composition containing organic functional groups of urethane and pyridine, more precisely an acrylic pressure sensitive adhesive composition which has excellent removability owing to its low initial peel strength on glass and excellent long-term durability since the peel strength of the pressure sensitive adhesive composition onto glass is being increased under high temperature and high humidity. The present invention also relates to an acrylic pressure sensitive adhesive composition for a polarizer having excellent adhesive functions and durability, a polarizer and a LCD containing the same.

Abstract: ?-ketocarbonyl-functional organosilicon compounds are prepared by reacting, organosilicon compounds containing an SiC-bonded organic radical having a primary amino group, with organic ester compounds containing a group of the formula —O—C(?O)— and, reacting the product with diketenes or diketene derivatives, to produce ?-ketocarbonyl-functional organosilicon compounds containing at least one SiC-bonded radical of the formulae —R1{—N[C(?O)—CHR5—C(?O)—CH2R5]—R1}x—NH—C(?O)—(O)y—R4{—O—[C(?O)—CHR5—C(?O)—CHR5]yH}z or —R1(—NR2—R1)x—NH—C(?O)—(O)y—R4{—O—[C(?O)—CHR5—C(?O)—CHR5]yH}z R1 is a divalent C1-18 organic radical R2 is a hydrogen atom or a monovalent C1-18 organic radical, R5 is hydrogen, v is 1, x is 0 or an integer from 1 to 10, R2? has one of the meanings of R2 with the proviso that R2? is not a hydrogen atom, y is 0 or 1, and z is 1 or 2.