Abstract: The present invention relates to a thermoplastic silicone-polyurethane elastomer and a method for preparing the same. The elastomer is prepared from raw materials comprising: 25-80 parts of a macromolecular polyol, 0-60 parts of a silicone oil or a liquid silicone rubber, 10-50 parts of a diisocyanate, 3-20 parts of a small molecular diol as a chain extender, and 0.1-3 parts of an auxiliary agent. The macromolecular polyol is selected from a silicon-free polyol having a molecular weight of between 1,000 and 4,000 g/mol and a polyol modified by silicone through copolymerization or grafting. The small molecular diol is a small molecular diol comprising 10 or less carbon atoms.

Abstract: The present invention provides a curable adhesive composition comprising at least one curable silylated polymer and at least one curing catalyst obtained by reaction of a metal alkoxide and an oxime. The present invention also provides the use of a metal compound obtained by reaction of a metal alkoxide and an oxime as curing catalyst for silylated polymers.

Abstract: A method of producing a layer of a UV-cured silicone rubber composition on a substrate surface, including applying a primer composition to the substrate surface and hardening the primer composition followed by applying a UV-curable silicone rubber composition, and UV-curing the curable silicone rubber composition. At least one UV-sensitive crosslinking catalyst selected from compounds which initiate and promote curing of UV-curable silicone rubber compositions, is added to the silicone primer composition in any desired sequence before, during or after hardening of the silicone primer composition.

Abstract: Embodiments of the invention provide silicon-based nanoparticle composites, where the silicon nanoparticles are highly luminescent. Preferred embodiments of the invention are Si—O solid composite networks, e.g., glass, having a homogenous distribution of luminescent hydrogen terminated silicon nanoparticles in a homogenous distribution throughout the solid. Embodiments of the invention also provide fabrication processes for silicon-based silicon nanoparticle composites. A preferred method for forming a silicon-based nanoparticle composite disperses hydrogen terminated silicon nanoparticles and an inorganic precursor of an organosilicon gel in an aprotic solvent to form a sol. A catalyst is mixed into the sol. The sol is then permitted to dry into a gel of the silicon-based nanoparticle composite.

Abstract: A fast curable non-isocyanate-based polyurethane- and polyurethane-epoxy network nanocomposite polymeric compositions are derived upon crosslinking a mixture comprising of natural or modified nano-clay [ionic phyllosilicate] with platelet thickness in the scale of ? (˜1 nm) and aspect ratio (length/thickness) higher than 10 (nm)] preferably natural or modified montmorillonite with either a monomer(s) or oligomer(s) bearing at least one cyclocarbonate group or a mixture of the latter with an epoxy resin, with a hardener, which is a monomer or oligomer or mixtures therefrom, bearing primary and/or secondary amino groups. The use of the nanoclays reduces the gel time and increases the adhesion of the cured polyurethane and polyurethane/epoxy hybrid and also reduces its water absorption.

Abstract: This invention relates to a method for producing a transparent composite material comprising a first step of subjecting a synthetic smectite having a number average particle diameter of from 10 to 300 nm and an aspect ratio of from 10 to 300 to organizing treatment with an organic quaternary ammonium salt and/or an organic quaternary phosphonium salt; a second step of mixing the synthetic smectite subjected to organizing treatment and a curable resin to prepare a resin composition containing the synthetic smectite in an amount of 10 to 40 mass %; a third step of curing the resin composition to obtain a cured product; and a forth step of removing the organic volatile components remaining in the cured product. According to the method, a transparent composite material which is flexible and has a low coefficient of thermal expansion can be obtained which is reduced in outgassing at high temperature under vacuum as in vapor deposition of a conductive thin film.

Abstract: A hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.

Abstract: A dental filler and dental resin restorative composition containing the dental filler is provided. The dental filler is prepared by pre-treating an acid-reactive filler with a polymerizable monomer or oligomer pre-treatment chemical having at least one acid or acid-precursor functional group, at least one polymerizable unsaturated carbon-carbon bond, and a molecular weight of about 1,000 grams per mole or less.

Abstract: A mixture of a benzophenone derivative having hydroxyl and alkoxysilyl groups and a benzophenone derivative having silyloxy and alkoxysilyl groups provides a reactive UV absorber which is unlikely to gel, stable during shelf storage, and curable. A coating solution comprising the UV absorber cures at room temperature to form a UV-screening film which has adhesion to glass and plastic substrates, scratch resistance, and bleed resistance, and maintains a UV-screening function over time.

Abstract: A (thio)phenoxyphenyl phenyl silane composition is disclosed. A method of making the (thio)phenoxyphenyl phenyl silane composition is also disclosed, the method further including a step of purification. A high purity (thio)phenoxyphenyl phenyl silane composition suitable for use in the preparation of encapsulants for high brightness light emitting devices is further disclosed.

Abstract: Provided is a chromium-free metal surface treatment agent excellent in rust inhibitive performance which can be used in a surface treatment of metal products, in particular, galvanized metal products. The metal surface treatment agent consists essentially of a siliceous binder solution comprising water and/or alcohol as a solvent, and the concentration of the silica component is 8 to 25% by weight. In particular, a metal surface treatment agent containing an alcoholic solution of alkoxysilane oligomer having a weight averaged molecular weight of 1000 to 10000, which is obtained by hydrolyzed condensation polymerization of alkoxysilane, can suppress the occurrence of white rusting for a long time. It is preferred that 3 to 25 parts by weight of a dispersed nano-sized titanium dioxide powder having an average primary particle size of not more than 70 nm, per 100 parts by weight of the silica component be suspended in the siliceous binder solution.

Abstract: A process of repairing a plasma etched low-k dielectric material having surface-bound silanol groups includes exposing at least one surface of the dielectric material to (a) a catalyst so as to form hydrogen bonds between the catalyst and the surface-bound silanol groups obtaining a catalytic intermediary that reacts with the silane capping agent so as to form surface-bound silane compounds, or (b) a solution comprising a supercritical solvent, a catalyst, and a silane capping agent so as to form hydrogen bonds between a catalyst and the surface-bound silanol groups obtaining a catalytic intermediary that reacts with the silane capping agent so as to form surface-bound silane compounds. Horizontal networks can be formed between adjacent surface-bound silane compounds.

Abstract: A coating composition that is capable of forming a coating film that combines abrasion resistance and crack resistance. The composition comprises: (A) a silicone resin obtained by hydrolysis and condensation of an alkoxysilane that includes an alkoxysilane represented by a general formula (1): (R1)mSi(OR2)4-m??(1) (wherein, R1 represents a hydrogen atom, or a substituted or unsubstituted monovalent hydrocarbon group, R2 represents an alkyl group of 1 to 3 carbon atoms, and m represents either 0 or 1), (B) hydrophobic silica microparticles, (C) a curing catalyst, and (D) a solvent.

Abstract: Disclosed is a coating composition that can provide structural materials having hydrophilicity, excellent self-cleaning property and long service life. The present invention also discloses a method for preparing the composition, a substrate, such as a film or structural exterior material like vinyl sidings, with the applied coating composition, and a method to prepare a substrate with the coating composition. The coating composition has hydroxy group-containing inorganic particles that improve the initial hydrophilicity of conventional coating agents. Additionally, by using two types of inorganic particles having different particles diameters, the coating composition can form a hydrophilic coating layer having a contact angle with water of 30° or less.

Abstract: The present invention provides a method for producing polyorganosiloxane particles through the step of hydrolyzing and condensing a silicon compound having a non-hydrolyzable group and a hydrolyzable alkoxyl group bonded to its silicon atom in the presence of a catalyst and thereby forming seed particles of polyorganosiloxane particles to obtain a seed-particles-containing solution and the step of adding a particle-diameter-growing aqueous solution containing the same silicon compound or a hydrolyzate thereof to the above seed-particles-containing solution to grow the above seed particles, the method comprising the step of obtaining the seed-particles-containing solution, in which particles are measured for a particle diameter continuously or at intervals of a constant time period and terminating the reaction at a time when an intended particle diameter is reached.

Abstract: A Chromium VI-free coating composition comprises a binder and a corrosion inhibitor in a solvent, wherein the binder comprises a silicate and an organic titanate, and the corrosion inhibitor comprises aluminium particles and zinc particles preferably flakes. The composition may also comprise an anti-corrosion additive which comprises a metal phosphate, a lubricant which comprises a polyolefin wax, and/or a thickener. The coating composition is useful for coating substrates such as nuts, bolts and other fasteners, door, bonnet and boot lock parts, hinges, door stoppers, window guides, seat belt components, brake rotors and drums, and other transportation industry related parts.

Abstract: The invention is drawn to silane copolymers prepared from the reaction of one or more polyisocyanates with one or more lubricious polymers having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and with one or more organo-functional silanes having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and at least one functional group reactive with a silicone rubber substrate. The silane copolymers of the invention can be used as coatings that are elastic when dry, lubricious when wet, and resist wet abrasion. These copolymers are useful as coatings for polysiloxane (rubber) and other difficult to coat substrates, especially for medical devices, such as catheters. These silane copolymers can contain active agents such as antimicrobials, pharmaceuticals, herbicides, insecticides, algaecides, antifoulants, and antifogging agents.

Abstract: The adhesion of overlying layers to a silicalite-plus-binder dielectric layer is enhanced by forming a layer that includes the binder in a higher concentration. The overlying layer, e.g., silicon dioxide, silicon carbide or silicon nitride, adheres more tightly to the higher-concentration binder layer. Although the presence of the higher-concentration binder layer may increase the dielectric constant of the overall silicalite-plus-binder stack, the increase is generally minimal.

Abstract: A nonstaining coating composition which comprises as essential components (A) a specific aliphatic sulfonic acid compound or amine salt thereof, (B) a compound having per molecule at least one functional group selected among carboxly, a carboxly anhydride group, and a carboxyl group blocked with an alkyl vinyl ether, (C) a specific organosilicate and/or a condensate thereof, and (D) a resin having epoxy groups and/or alkoxysilyl groups in the molecule; and a method of finish coating. They give a cured coating film which has nonstaining properties based on a high degree of hydrophilicity from immediately after the formation thereof and has satisfactory long-term weatherability, water resistance, and chemical resistance.

Abstract: An Ormosil composite coating that provides good corrosion and abrasion resistance of the underlying substrate. The Ormosil composite coating of the present invention is entrapped with a plurality of inorganic particles of a size greater than 1 micron to produce a coating of a sufficient, desired thickness. The coating of the present invention, generally includes an ormosil composite including a plurality of entrapped inorganic particles wherein each of the plurality of inorganic particles is at least one (1) micron in its maximum dimension but not greater than 75 microns (however, a maximum dimension of 5 microns is preferred).

Abstract: This invention provides a curable resin composition for one-pack type water-based paint which is readily cured regardless of coating environment, said resin composition comprising copolymer (I) which is produced by the copolymerization of unsaturated group-containing urethane prepolymer (A) which is obtained from a reaction of diisocyanate compound (a), glycol compound (b), carboxyl group-containing glycol compound (c) and hydroxyl group-containing ethylenically unsaturated monomer (d), with maleimide group-containing ethylenically unsaturated monomer (e), carbonyl group-containing ethylenically unsaturated monomer (f) and another ethylenically unsaturated monomer (g), and compound (II) which has, per molecule, two or more same or different functional groups selected from hydrazide group, semicarbazide group and hydrazone group

Abstract: The invention relates to soluble organic-inorganic compositions comprising linear and cyclic hydrosiloxanes, to a novel process for preparing them and to their use as coating materials.

Abstract: 3-methacryloxy- and 3-acryloxyisobutylalkoxysilanes of the general formula (I) and R is a linear alkyl radical having from 1 to 4 carbon atoms, R1 is a linear or branched alkyl radical having from 1 to 3 carbon atoms, and m is 0 or 1.

Abstract: The present invention relates to a silicon-containing liquid composition comprising (A) 100 parts by weight of an organosilicate, calculated as SiO2, (B) 0.1 to 10 parts by weight of a catalyst, (C) 100 to 50,000 parts by weight of water, and (D) 100 to 50,000 parts by weight of a solvent, a weight ratio of the water (C) to the solvent (D) being in the range of 30:70 to 80:20.

Abstract: Methods for elastifying and extending polymers with EVA copolymers, PVC homopolymers or PVC copolymers in gel form are described. The elastified and extended polymers are useful as sealing materials, adhesives and sealants.

Abstract: A two-component porous material including small silicalite crystals in a porous binder provides a low dielectric constant material useful as an insulating layer in microelectronic devices. The silicalite/binder porous material uses silicalite nanocrystals smaller than the characteristic dimensions of the features on the integrated circuit device. The binder is an amorphous porous material that links the silicalite nanocrystals together, formed from a precursor which polymerizes on heating. The silicalite nanocrystals are supplied as a colloidal suspension or slurry. The slurry and binder precursor are spincoated onto a substrate and thermally treated to polymerize the binder precursor and drive off solvent in the slurry, forming the porous silicalite/binder material. The silicalite/binder porous material is readily integrated into standard damascene fabrication processes.

Abstract: A composition comprising (1) 0.1-50 parts by weight of the reaction product of a hydroxyl group-containing benzophenone compound with a silane and/or a hydrolyzate thereof and (2) 100 parts by weight of a silane compound and/or a hydrolyzate thereof is applied to a polycarbonate sheet to form a protective coating having mar and weather resistance. A composition comprising the reaction product of a hydroxyl group-containing benzophenone compound with a silane and/or a hydrolyzate thereof is useful for undercoating.

Abstract: Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane in the presence of organic film-forming polymers are disclosed. Alkali metal carboxylic acid catalyst is also disclosed, as well as the incorporation of cerium oxide for attenuation of ultraviolet radiation.

Abstract: Disclosed is a silicon-containing flame retardant for an organic polymer, comprising a monomer, a polymer or a mixture thereof, which is represented by the following formula (1): wherein each of R1 and R2 independently represents a monovalent C1-C20 hydrocarbon group; each of R3 and R4 independently represents a monovalent or divalent C1-C20 hydrocarbon group, with the proviso that, when each of R3 and R4 independently represents a divalent C1-C20 hydrocarbon group, R3 and R4 are bonded to each other to form a ring; and n is 1 or more in terms of the number average n-value.

Abstract: A coating liquid for forming a silica-containing film with a low-dielectric constant, which enables the formation of a low-density film having a dielectric constant as low as 3 or less and being excellent not only in resistance of oxygen plasma and in process adaptation but also in adhesion to a substrate and in film strength, is provided. A substrate coated with the silica-containing film having the above characteristics, which is obtained by the use of the above coating liquid, is further provided.

Abstract: Disclosed is an alkoxysilane/organic polymer composition for use in producing an insulating thin film, comprising (A) a specific alkoxysilane; (B) a specific organic polymer; and (C) a solvent for alkoxysilane (A) and organic polymer (B), wherein solvent (C) comprises at least one organic solvent selected from the group consisting of amide linkage-containing organic solvents and ester linkage-containing organic solvents. Also disclosed are a silica-organic polymer composite thin film which is produced by a process comprising: forming a thin film of the composition of the present invention; subjecting the thin film to a hydrolysis and dehydration-condensation reaction with respect to the alkoxysilane thereof, to thereby cause the alkoxysilane to be gelled in the thin film; and removing the solvent remaining in the thin film by drying, and a porous silica thin film which is obtained by removing the organic polymer from the silica-organic polymer composite thin film.

Abstract: A two-component porous material including small silicalite crystals in a porous binder provides a low dielectric constant material useful as an insulating layer in microelectronic devices. The silicalite/binder porous material uses silicalite nanocrystals smaller than the characteristic dimensions of the features on the integrated circuit device. The binder is an amorphous porous material that links the silicalite nanocrystals together, formed from a precursor which polymerizes on heating. The silicalite nanocrystals are supplied as a colloidal suspension or slurry. The slurry and binder precursor are spincoated onto a substrate and thermally treated to polymerize the binder precursor and drive off solvent in the slurry, forming the porous silicalite/binder material. The silicalite/binder porous material is readily integrated into standard damascene fabrication processes.

Abstract: Anti-reflective coating materials for deep ultraviolet photolithography include one or more organic dyes incorporated into spin-on-glass materials. Suitable dyes are strongly absorbing over wavelength ranges around wavelengths less than 260 nm such as 248 nm and 193 nm, that may be used in photolithography. A method of making dyed spin-on-glass materials includes combining one or more organic dyes with alkoxysilane reactants during synthesis of the spin-on-glass materials.

Abstract: A composition and devices utilizing these compositions for providing protection against electrical overstress including a matrix formed of a mixture of an insulating binder, conductive particles having an average particle size of less than 10 microns, and semiconductive particles having an average particle size of less than 10 microns. The compositions exhibit improved clamping voltages in a range of about 30 volts to greater than 2,000 volts.

Abstract: A composition is comprised of the following: a) a hydrolyzed or partially hydrolyzed alkoxysilane; b) a solvent consisting of an organic liquid or mixture of two or more organic liquids in which component (a) and component (c) are soluble and c) a cross linking prepolymer, oligomer, resin or mixtures thereof that forms a low dielectric constant crosslinked polymer. Preferred crosslinked polymers are of a arylcyclobutene or polyphenylene prepolymer, oligomer, resin or mixtures thereof. A coating may be made using the composition wherein the coating is comprised of a crosslinked polymer of a low dielectric crosslinking prepolymer, oligomer, resin or mixture thereof and a hydrolyzed or partially hydrolyzed alkoxysilane, said coating being adhered to a surface of a substrate wherein said surface is comprised of a first material that is a metal, ceramic or polymer and a second material that is (i) a metal, ceramic, or polymer and (ii) different than the first material.

Abstract: A condensation curable coating composition comprises the following and any reaction product thereof: (A) a room temperature vulcanizable polyorganosiloxane composition; and (B) a marine foul release-enhancing proportion of at least one organic compatible silicone fluid free from silanol groups and being capable of blooming to the surface of a cured product of component A.

Abstract: A radiation curable coating composition for forming a primary polymeric coating on having good adhesion to a glass optical fiber is disclosed. The coating composition is formed by a mixture of a base radiation curable liquid composition capable of forming a polymeric coating; and a hydrolyzed coupling agent mixture comprising N-beta (aminoethyl)-gamma-aminopropylmethyldimethoxysilane, N-beta (aminoethyl)-gamma-aminopropyltrimethoxysilane, isocyanatopropyltriethoxysilane, and gamma-(trimethoxylsilyl)propylacrylate.

Abstract: A process for the preparation of a photosensitive body surface coating material comprises hydrolytically condensing an alkoxysilane in a mixed solvent comprising an alcohol and water in the presence of finely divided silica. A polysiloxane resin is produced by heat curing the silane after its hydrolytic condensation. The polysiloxane resin has the formula: R.sup.1 SiO.sub.3/2, and R.sup.1 comprises fluorohydrocarbon groups. The photosensitive body surface coating material is not detrimental to the functionality required of the electrophotographic photosensitive bodies, has superior optical uniformity, has low surface energy, and has superior surface hardness.

Abstract: Anti-fouling coatings comprise a room temperature vulcanizable polyorganosiloxane composition and a polyorganosiloxane free from silanol groups and comprising at least one hydroxy- or alkoxy-terminated polyoxyalkylenealkyl radical. The latter is capable of blooming to the surface of the cured room temperature vulcanizable composition, thus inhibiting the deposition of marine life on the coated article.

Abstract: A coating composition comprising a mixture of a methyl-rich silicone resin (S-1) and an acrylic resin (A-1) obtained by polymerizing at least one radical polymerizable vinyl monomer (M-1), or a reaction product obtained by reacting the silicone resin (S-1) with the radical polymerizable vinyl monomer (M-1) is suitable for coating carrier particles to form an electrophotographic carrier.

Abstract: Alkoxides with polymerizable groups are single source precursors for organic-inorganic hybrid composites possessing good mechanical properties. Additional function groups of the alkoxides provide enhanced adhesion to other surfaces, such as dentin. The selection of specific organic monomers having functional groups that are responsible for enhanced properties of the organic-inorganic hybrid composites is important. Single source precursors containing the desired functional groups are condensed and polymerized into the organic-inorganic hybrid composites with enhanced properties which are particularly useful as dental composites.

Abstract: Finishing agents comprise the combination of an alkoxysilane surface active agent, a silanol condensing catalyst, and a nonaqueous liquid or solid medium, or the combination of an alkoxysilane surface active agent, an acid catalyst and a liquid or solid medium. In the latter embodiment, it is preferred that at least one of the alkoxysilane surface active agent and the acid catalyst be microencapsuled. The finishing agent permits formation of chemically adsorbed protecting films. Such protecting films are used for substrates of such equipments as electronics products, electric domestic products, automobiles, industrial equipments, mirrors, lenses for glasses and the like. The protecting films have a durability and heat, weather and abrasion resistance, and also water and oil repellent properties.

Abstract: The present invention provides a composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curing reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in said thermosetting resin with a good interfacial wettability without causing macroscopic phase separation. Thus, the present invention can provide a cured or uncured composite of a thermosetting resin with a metallic oxide which can be used as a molding material, sliding material, friction material, coating material, film-forming material, etc.

Abstract: Finishing agents comprise the combination of an alkoxysilane surface active agent, a silanol condensing catalyst, and a nonaqueous liquid or solid medium, or the combination of an alkoxysilane surface active agent, an acid catalyst and a liquid or solid medium. In the latter embodiment, it is preferred that at least one of the alkoxysilane surface active agent and the acid catalyst be microencapsuled. The finishing agent permits formation of chemically adsorbed protecting films. Such protecting films are used for substrates of such equipments as electronics products, electric domestic products, automobiles, industrial equipment, mirrors, lenses for glasses and the like. The protecting films have a durability and heat, weather and abrasion resistance, and also water and oil repellent properties.

Abstract: An improved silane/silica sol copolymer hardcoating composition for protecting optical plastic substrates from scratching is able to be manufactured at lower costs and to provide much-improved ease of use in transportation, storage, dipbath stability, and blush resistance in ordinary cleanroom atmospheres. The silane/silica sol copolymer is formed as a direct reaction product of an acidic silica sol and an monomethyl trialkoxy silane, preferably substantially monomethyltriethoxysilane, in ratios of 30:70 to 70:30, most preferably about 40:60. A tail solvent aids blush resistance and adhesion to unprimed polycarbonate. Optionally, colloidal silica sol dissolved in water-miscible solvent may be reacted in a second stage with acidic aqueous colloidal silica sol earlier silanized with monomethyl trialkoxy silane.

Abstract: It has been found that silicone resins which contain alkoxy functional groups and harden rapidly in the presence of moisture allow suitable one-component formulations as provisional fixing materials. The hardening rate can be adjusted by addition of suitable activators.

Abstract: A protective coating is made by polymerizing in water an amino oxysilane having at least one primary amine group to control pH and water solubility, the amino oxysilane comprising a saturated or unsaturated hydrocarbon group containing up to 12 carbon atoms, and having multiple hydrolyzable side groups selected from the group consisting of alkyl, aryl, alkaryl, alkoxy and alkoxyalkyl groups having from 1 to 6 carbon atoms, where the number of repeating units of the oxysilane is in the range of from 1 to 3, and metal silicates comprising a cation from the group consisting of alkali metals and alkaline-earth metals, the metal silicate having multiple hydroxy side groups to facilitate polymerization.

Abstract: A one-component moulding and sealing compound based on prepolymers with terminal silyl groups with at least one hydrolyzable substituent on the Si atom, organo-metallic tin compounds as the catalyst and also inorganic fillers containing a polyvinyl chloride and fatty acid amide having thixotropic effect to reduce surface tackiness.

Abstract: A primer composition has blended therein an organic silicon compound having in a molecule at least one group of the formula: ##STR1## wherein R.sup.1 is a monovalent hydrocarbon group or a group represented by QSi( R.sup.4 O).sub.a (R.sup.5).sub.3-a, Q is a divalent organic group, R.sup.4 and R.sup.5 each are a monovalent hydrocarbon group, a is an integer of 0 to 3, R.sup.2 and R.sup.3 each are a hydrogen atom or a monovalent hydrocarbon group, and n is 0, 1 or 2. The primer composition is a useful adhesive since it is effective for joining silicone elastomers and similar adherends to supports such as paint coated metals and resins.

Abstract: A coating composition comprising (A) a polyorganosiloxane graft copolymer emulsion, (B) a reaction product between an amino functional silane and/or a hydrolyzate thereof and an acid anhydride, (C) colloidal silica, (D) a curing catalyst, and (E) an inorganic filler is useful in coating exterior and interior building materials. The composition is applicable to a substrate to form a coating at room temperature having sufficient extensibility to follow cracks in the underlying substrate as well as low-to-high temperature sensitive performance, moisture permeability, flame retardance, and decorative effect.