Abstract: A colorless and transparent thermosetting polyimidesilicone resin comprising structural units of the following general formula (1) and structural units of the general formula (4), said resin being soluble in an organic solvent 1

Abstract: The invention relates to novel crosslinkable copolymers of formula wherein the variables are as defined in the claims. The copolymers of the invention are especially useful for the manufacture of biomedical moldings, for example ophthalmic moldings such as in particular contact lenses.

Abstract: A glycol-organosilane composition and a process for producing the composition are disclosed. The composition comprises or is produced by combining (a) a glycol and (b) an organosilane. This composition is preferably substantially soluble in glycol and water. Also disclosed is a polyester composition and a process to produce the composition. The composition comprises repeat units derived from (a) a carbonyl compound or its oligomer, (b) a glycol, (c) a crosslinker, and (d) optionally a comonomer. The crosslinker can be the glycol-organosilane, a carbonyl compound containing 3 or more carboxyl groups, or an alcohol containing 3 or more hydroxyl groups. The comonomer is a dicarboxylic compound, a diol compound, or a carbonyl alcohol. The polyester composition can be used to increase the rate of polymerization, to increase pilling resistance and strength of polyester, to decrease crystallization rate and improve object forming process such as fibers and containers.

Abstract: A polyimide silicone resin composition comprising a polyimide silicone resin having recurring units of formula (1), a (meth)acrylic compound, and a polymerization initiator has fluidity at 25° C. despite the substantially absence of a solvent. In formula (1), X is a tetravalent organic group, Y is a divalent organic group, Z is a divalent organic group having an organosiloxane structure, p and q are positive numbers.

Abstract: A polyimide silicone resin which is obtained from a diamine containing an acid dianhydride and a diaminopolysiloxane, contains 50% by weight or more of a siloxane residual group and has an elongation at rupture of 400% or higher and a modulus of elasticity of 500 N/mm2 or lower. Also disclosed are a polyimide silicone resin solution composition comprising this polyimide silicone resin and a ketone solvent having a boiling point of 130° C. or below, and a polyimide silicone resin film comprising this polyimide silicone resin and formed on a substrate. The polyimide silicone resin can form films at relatively low temperature, has superior adhesiveness to substrates and durability under conditions of high humidity and also has low stress and high elongation.

Abstract: The present invention provides a polyimide resin, a resin composition, an adhesive solution, a film-state joining component, and an adhesive laminate film soluble in a solvent having excellent heat resistance and adhesion, capable of bonding and curing at relatively low temperatures.

Abstract: A polyimide resin having phenolic hydroxyl radicals in its skeleton is prepared using a diamine bearing an aromatic ring having an amino radical attached thereto and another aromatic ring having a phenolic hydroxyl radical. The polyimide resin and a composition comprising the polyimide resin, an epoxy resin and a curing agent are suited for use as varnish, adhesive and adhesive film for which adhesion and heat resistance are required.

Abstract: This invention relates to asymmetrical, substituted polysiloxanes which show good compatibility in a variety of oils and improve the spreading behavior of oil-based formulations, to a process for preparing these asymmetrical polysiloxanes and to oil formulations containing said asymmetrical polysiloxanes. The asymmetrical polysiloxanes of this invention are used in herbicidal and pesticidal compositions, in cosmetic and pharmaceutical preparations as well as in industrial applications. The assymmetrical substituted polysiloxanes have the following formula wherein R1, R2, Z a and b are described herein.

Abstract: Aspartate-functional silicone and the process for its preparation is disclosed. Also disclosed are aromatic polycarbonate that contains the inventive aspartate-functional silicone, a process for its preparation and its use in making molded articles.

Abstract: Compositions are provided which contain (a) one or more polysiloxanes comprising at least one reactive functional group; a plurality of particles; and, optionally, one or more curing agents comprising at least one functional group that is reactive with any reactive functional group of polysiloxane (a). Additionally, a process for applying the multi-component composite coatings described above to a substrate and coated substrates are provided. A process for preparing the coating compositions also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.

Abstract: Block copolymers suitable as molding resins are provided having polycarbonate blocks and polysiloxane blocks of the structure where R1, R2, Y and m are as defined herein, and where the weight percentage of blocks of polycarbonate blocks is from 92 to 96% and the weight percentage of siloxane from blocks of polysiloxane blocks is from 4 to 8%.

Abstract: This invention related to silicone elastomer compositions in the form of gels and/or organized structures. The silicone elastomer compositions are produced by reacting a siloxane having a first reactive group with a crosslinker having a second reactive group in a diluent. One reactive group is selected from epoxy-functional groups or chlorohydrin functional groups while the other reactive group is a functional group that reacts with epoxy-functional groups or chlorohydrin functional groups (i.e. amine, hydroxyl). The silicone elastomer compositions of the instant invention are particularly useful in personal care products, textiles, auto care products, and laundry products and for the delivery of active ingredients.

Abstract: A photoactive polymer of the general formula I: in which: P is a photoactive group which can photoisomerise and/or photodimerise; B represents an aromatic or alicyclic group, or B further represents a nitrogen atom or —CR2—; A, C, D each independently of the other represents an aromatic or alicyclic group; M represents a repeating monomer unit in a homo- or copolymer; S1, S2, S3, S4, S5 represent a single covalent bond or a spacer unit; n1, n2 are each independently a positive integer up to 2 with the proviso that n1+n2≦2; R1 is a hydrogen atom, or a straight-chain or branched alkyl residue wherein R2 represents a hydrogen atom or lower alkyl. The photoactive polymers may be used as orientation layers for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems.

Abstract: A silicone rubber adhesive composition comprising (A) a heat curable organopolysiloxane composition of the addition curing type or peroxide curing type, (B) reinforcing silica fines, (C) an adhesive agent, and (D) a compound having at least one ester group in a molecule is easily moldable within a short time by injection molding, suitable in primerless molding, and bondable with various thermoplastic resins. Integrally molded articles in which the silicone rubber adhesive composition is firmly bonded to the thermoplastic resin are obtainable without a need for modification of the resin.

Abstract: Compositions are provided which contain (a) one or more polysiloxanes comprising at least one reactive functional group; a plurality of particles; and, optionally, one or more curing agents comprising at least one functional group that is reactive with any reactive functional group of polysiloxane (a). Additionally, a process for applying the multi-component composite coatings described above to a substrate and coated substrates are provided. A process for preparing the coating compositions also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.

Abstract: The polymer for cosmetics produced by polymerizing (A) a fluorine-containing (meth)acrylate, and (B) at least one silicon-containing polymerizable compound selected from the group consisting of a mercapto-modified silicone, an azo group-containing silicone and a polymerizable silane can be blended easily in cosmetic preparations and can form a film excellent in a water proofing property, a water- and oil-repellency, feelings in use and safety. This copolymer for cosmetics can improve the drawbacks of fluorine compound-treated powders.

Abstract: The present invention provides a thermal stable low elastic modulus material, which has high thermal stability, is little in change in dynamic characteristics such as coefficient of thermal expansion and elastic modulus within a temperature of −50° C. to 300° C., has an elastic modulus at room temperature of 2-0.01 GPa and is high in reliability of electric insulation regardless of a temperature fluctuation, and provides a semiconductor device using the same. The present invention also provides a thermal stable low elastic modulus resin composition obtained by heat-curing a mixture containing a polyimide, polyamide-imide or polyamide resin or resin precursor, whose cured product has an elastic modulus measured at −50° C. of 2-0.01 GPa, and an oligomer of an organosilicon compound having a functional group capable of causing addition reaction with an NH and/or COOH group.

Abstract: A silicone composition that includes at least one functionalized polydiorganosiloxane, at least one cure catalyst, at least one reactive diluant, and at least one thermally conductive filler is provided in the present invention. Further embodiments of the present invention include a method for substantially increasing the thermal conductivity of a silicone composition and a thermal interface material containing the aforementioned silicone composition.

Abstract: A coating composition having (A) an alcohol dispersion which includes silica having the hydrophobic surface and dispersed in an alcohol dispersion medium, the content of silica in a solid substance being 80% by weight or more; (B) a solution including a silicone oligomer which is obtained by a reaction of an alkoxysilane with water and has an average structural unit represented by R1nSiOx/2(OH)y (OR2)z (R1 representing an alkyl group, phenyl group or vinyl group, R2 representing an alkyl group and n, x, y and z representing numbers satisfying relations: 0.8≦n≦1.7, 2<x<3.2, y>0, z>0 and y+z=4−n−x); and (C) a curing agent. The coating composition exhibits excellent storage stability after the curing agent is added, suppresses aggregation of fine silica particles in spray coating and provides coating films having a high hardness and exhibiting excellent weatherability, water resistance, chemical resistance and adhesion.

Abstract: It is an object of the invention to provide a clear coating composition, which can give coating films showing good water repellency, in other words a factor giving a care-free and deluxe feeling to car owners, and which are excellent in non-sanding recoatability in recoating dirtied coatings after due repair, as well as a method of forming a coating film and a multilayerd coating film. The invention provides a clear coating composition which comprises (A) 100 parts by mass of the sum of a crosslinkable coating film-forming resin and a crosslinking agent on the solid basis and (B) 0.01 to 2 parts by mass of a ladder silicone copolymer obtainable by copolymerizing (b-1) a (meth)acryloxyalkyl-containing ladder silicone oligomer, (b-2) a crosslinkable functional group-containing ethylenically unsaturated monomer and optionally (b-3) another copolymerizable ethylenically unsaturated monomer.

Abstract: An adhesive composition that bonds at low temperatures is disclosed. The composition is a solution in an organic solvent of a polyimide, an epoxy resin, and a cyanate. The polyimide can be a polyimidesiloxane, made from a dianhydride, an aromatic diamine that does not contain siloxane, and a siloxane diamine. The adhesive composition can be used to make a single layer tape, a coated tape, or a double-sided trilayer tape. The tape can bond an article, such as a chip, to a substrate, such as a circuit board.

Abstract: Synthetic polymers having hydrogen bonding capability and one or more polysiloxane moieties are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.

Abstract: The present invention relates to polymers of the general formula I: in which M1, M1′, M2 denote a recurring monomer unit from the group: acrylate, methacrylate, 2-chloroacrylate, 2-phenylacrylate; w, w1, w2 are molar fractions of the comonomers with 0<w≦1, 0≦w1<1 and 0≦w2≦0.

Abstract: Additives for paints and inks which are suitable to be blended in paints and inks for high quality finishing are provided. The additive is characterized by comprising a copolymer having a number-average molecular weight of from 1,000 to 60,000 which is obtained by copolymerizing 2-50% by weight of reactive monomer containing in its molecule polydimethylsiloxane having a degree of polymerization of 5 to 100 with 98-50% by weight of reactive monomers which have been heretofore used as flow-and-leveling agents for paints and inks. When minor amounts of those additives are incorporated in paints or inks, drawbacks on painted or printed planes caused by environmental staining substances are prevented and the appearance of the painted or printed objects is improved.

Abstract: The present invention relates to a material having improved mechanical properties, clarity, processability and/or degradation resistance comprising a polyurethane elastomeric composition which includes a soft segment derived from at least one polysiloxane macrodiol and at least one polyether and/or polycarbonate macrodiol. This material can function as a degradation-resistant material or biomaterial and is particularly useful in the manufacture of medical devices, articles or implants which contact living tissue or bodily fluids. The present invention also provides a polyurethane elastomeric composition which includes a soft segment derived from at least one polysiloxane and at least one polyether and/or polycarbonate macrodiol and processes for its preparation.

Abstract: Coating compositions are provided which include a polysiloxane comprising at least one reactive functional group, at least one material comprising at least one reactive functional group, and at least one boron-containing compound. Also provided are multi-layer composite coatings formed from a basecoat deposited from a pigmented coating composition and a topcoat applied over the basecoat, the topcoat deposited from the aforementioned coating composition. Methods for repairing a multi-layer composite coating and coated substrates are also provided. The compositions of the invention provide highly scratch resistant coatings, particularly highly scratch resistant color-plus-clear coatings, which have excellent intercoat adhesion to subsequently applied coating layers.

Abstract: Disclosed is an organic domain/inorganic domain hybrid material comprising: an organic domain comprising at least one water-soluble or water-dispersible organic polymer having a plurality of functional groups, and an inorganic domain, the organic domain and the inorganic domain being ionically bonded to each other through the functional groups of the organic polymer to form an ionically crosslinked structure, the inorganic domain comprising a plurality of inorganic bridges, each of which independently comprises at least one silicon atom, at least two oxygen atoms and at least two divalent metal atoms, wherein the weight ratio of the organic domain to the inorganic domain is at least 1.0.

Abstract: The present invention relates to mixtures prepared from (A) at least one linear, branched, or cyclic monomeric organosilane having at least two silicon atoms with hydrolyzable and/or condensation-crosslinking groups in which the silicon atoms are bonded to one another through at least one carbon atom in a linking unit, and (B) at least one boron- and/or aluminum-containing compound having the formula (I) RxM(OR′)3-x  (I)  wherein M is Al or B, x is 0, 1, or 2, R is C1-C6-alkyl, C6-C12-aryl, or (O)1/2, with the proviso that if R is (O)1/2, then the compound of the formula (I) is a chain when x is 1 and a cyclic or cage-form compound when x is 2, and each R′ is independently H, C1-C10-alkyl, or C6-C12-aryl. The invention further relates to hybrid materials prepared from such mixtures and to coatings produced therefrom.

Abstract: Coating compositions are provided which include a polysiloxane comprising at least one reactive functional group and at least one material comprising at least one reactive functional group. Also provided are multi-layer composite coatings formed from a basecoat deposited from a pigmented coating composition and a topcoat applied over the basecoat, the topcoat deposited from the aforementioned coating composition. A method for improving the scratch resistance of a coated substrate, as well as coated substrates also are provided. The compositions of the invention provide highly scratch resistant coatings, particularly highly scratch resistant color-plus-clearcoatings.

Abstract: A polyamic ester prepared by partially substituting hydrogen atoms of carboxylic groups of a polyamic acid with acid labile groups, the polyamic ester comprising one or more repeating units represented by Formula 1, and each of at least one terminal of the polyamic ester molecule terminates with the same or different reactive end-capping monomer: wherein in Formula 1, R1 and R2 are independently a hydrogen atom, or an acid labile group; X is a tetravalent, an aromatic or an aliphatic organic group; Y is a divalent, an aromatic or an aliphatic organic group; and m is an integer equal to or greater than 1.

Abstract: This invention provides a one-part, room temperature moisture curable resin composition which comprises a ketimine prepared by reacting a ketone having a substituent at &agr; position and a polyamine having at least two amino groups within its molecule wherein &agr; position is methylene, and a main polymer which is an epoxy resin and/or a modified silicone having at least two hydrolyzable alkoxysilyl groups in its molecule, and which exhibits good shelf stability and high curing rate once taken out of the container, and which may further exhibit flexibility; a one-part, room temperature moisture curable resin composition which exhibits good shelf stability and curability as well as wet surface adhesion or initial thixotropic properties; a silicon containing compound having ketimine group whose reaction with the epoxy resin during the storage is prevented by the presence of a bulky alkyl group near the ketimine group and which exhibits good shelf stability and curability, and its production method; a one-part

Abstract: Coating compositions are provided which are formed from components comprising (a) at least one polysiloxane comprising at least one reactive functional group; (b) at least one reactant comprising at least one functional group that is reactive with at least one functional group selected from the at least one reactive functional group of the at least one polysiloxane and at least one functional group of at least one reactant; and (c) a plurality of particles, wherein each component is different, and wherein the at least one reactive functional group of the at least one polysiloxane and the at least one functional group of the at least one reactant are substantially nonreactive with the particles. A multi-component composite coating composition formed from a basecoat and a topcoat deposited from the curable coating composition also is provided.

Abstract: Improved multi-layer composites are provided. The multi-layer composites include at least a first polymeric layer and a second polymeric layer formed over the first polymeric layer thereby forming an interface region there between. At least one of the polymeric layers is formed from a thermosetting composition which contains an adhesion promoter composition. The adhesion promoter composition is formed from (1) at least one adhesion promoting component, and (2) at least one surface active component. The improvement is represented by the presence of the adhesion promoting component (1) at the interface region.

Abstract: The invention concerns a polymerization and/or crosslinking method under electron beam and/or gamma radiation for compositions based on monomers, oligomers and/or polymers with organic functional groups. The invention is characterized in that the crosslinking and/or polymerization is carried out in the presence of an initiator capable of being activated under electron beam and/or gamma radiation comprising a boron derivative of formula (I) M+B(Ar) 4 wherein: M+, a unit bearing a positive charge, is an alkaline metal selected among those of columns IA and IIA of the periodic table; Ar is an aromatic derivative, optionally substituted by at least a substituent selected among a fluorine radical, a chlorine radical, a linear or branched alkyl chain, which itself can be substituted by at least a fluorine atom.

Abstract: Provided are modified carboxyl-terminated polyorganosiloxanes having a mean molecular weight of from 500 to 120,000 and represented by the following formula (1), and a method for producing them. The modified polyorganosiloxanes have a carboxyl group at one terminal position, and have a polyoxyalkylene moiety in the center of the molecular chain. They are highly miscible with various polar solvents and monomers. The method for producing them comprises reacting a polyorganosiloxane having a hydroxyl group at one terminal position and having a polyoxyalkylene moiety in the center of the molecular chain, with a cyclic acid anhydride having a specific structure, and it does not require plural reaction steps. In the method, various types of carboxyl-terminated polyorganosiloxanes can be easily produced, depending on the type of the cyclic acid anhydride used.

Abstract: An aqueous dispersion of a polymer synthesized from free-radical polymerizable compounds (monomers), wherein the dispersed polymer particles comprise compounds containing carbodiimide groups (carbodiimides for short) and the carbodiimides are not attached to the polymer by free-radical copolymerization.

Abstract: The invention relates to dental materials which contain at least one polysiloxane based on one or several silanes according to formula (I) [(Wq—R6—Z)p—R3]mY—R2—SiXnR13−n  Formula (I) in which X stands for a halogen atom, a hydroxyl, alkoxy and/or acyloxy group; n is equal to 1 to 3, R1 stands for an alkyl, alkenyl, aryl, alkylaryl, arylalkyl group; R2 stands for an alkylene group; R3 stands for a p-time substituted, straight, branched or cyclic, saturated or unsaturated, aromatic or aliphatic organic radical with 2 to 40 carbon atoms and optionally 1 to 6 heteroatoms; R6 stands for a q-times substituted, straight, branched or cyclic organic radical with 1 to 20 carbon atoms or is absent; p is equal to 1 to 6; q is equal to 1 to 6; Y stands for —NR4—, N or —(C═O)—NH—; m is equal to 2 for Y═N and equal to 1 for Y═—NR4—, or —(C═O)—NH—; R4 stands for an alkyl or aryl group; Z s

Abstract: A method for producing polysiloxane compositions, including an amphoteric class of organosilicone compositions, is provided.

Abstract: Disclosed are silicone polymer based compounds, which include a hydrophobic silicone polymer backbone and a hydrophilic component. The hydrophilic component may act as a chelating agent to bind a metal. The hydrophilic component may be hydrophilic prior to binding with a metal or after binding. Also disclosed are methods of making these compounds. The compounds are useful in a variety of applications.

Abstract: A compound represented by the following structural formula: 1

Abstract: A silicon-based polycarbonate of formula (I): 1

Abstract: A primer composition comprising (A) a diorganopolysiloxane having an average degree of polymerization of 500-2,000 and alkenyl groups at both ends of its molecular chain in an amount of 0.001-0.005 mol per 100 g of the diorganopolysiloxane, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, (C) a platinum base curing catalyst, and (D) a retarder is effective for improving the adhesion between various plastic films and silicone pressure-sensitive adhesives and thus forming satisfactory pressure-sensitive adhesive tapes.

Abstract: A polysiloxane-urethane macromonomer having an unsaturated bond on one end thereof was co-polymerized with acrylic acid or acrylate monomers to form a copolymer having polysiloxane-urethane groups as a side chain thereof.

Abstract: This invention relates to polyurethane prepolymers which comprise alkoxysilane terminal groups and which are based on special, very high molecular weight polyurethane prepolymers, to a method of producing them and to their use as binders for low-modulus sealing materials.

Abstract: The invention relates to a binder for powder coating materials having an oligomeric or polymeric substructure which are curable thermally and/or by means of high-energy radiation, said binder comprising in each case terminally and/or laterally at least one vinyl ether group a) and at least one group b) which is different from the vinyl ether groups a) but is coreactive with said groups a), there being on average at least one vinyl ether group a) and one coreactive group b) per oligomer or polymer molecule. The invention also relates to powder coating materials comprising such a binder and to the use of said powder coating materials for coating surfaces, especially in the form of an automotive top coat and a coil coating material.

Abstract: The object of the present invention is to provide a method capable of producing polyimide resins having excellent heat resistance, which can utilize inexpensive monomers and does not use solvents. The method comprises mixing, in the absence of a solvent, a diamine and at least one tetracarboxylic acid component selected from the group consisting of a tetracarboxylic acid, a tetracarboxylic acid monoanhydride and a tetracarboxylic acid dianhydride capable of forming two imide rings upon cyclization, and then heat-treating the mixture.

Abstract: The present invention discloses compositions as well as methods of making and using said compositions, having improved stability which, when applied to a variety of substrates and cured, form transparent coatings having abrasion resistant properties and a matched refractive index to that of the substrate. The compositions comprise an aqueous-organic solvent mixture containing a mixture of hydrolysis products and partial condensates of an epoxy-functional silane, a carboxylic acid functional compound selected from the group consisting of carboxylic acids, multifunctional carboxylic acids, anhydrides, and combinations thereof, a metal oxide composite colloid, a colloidal silica material, and a tetrafunctional silane. The coating compositions of the present invention may further include a mixture of hydrolysis products and partial condensates of one or more silane additives.

Abstract: There is provided an elastomer composition for an impact modifier and a thermoplastic resin composition having improved impact resistance using the same. An elastomer composition comprises a block copolymer (a) containing a methacrylate polymer and a siloxane polymer, and a graft copolymer (b) containing a polymer component having a glass transition temperature of lower than 25° C. And the composition is mixed with a thermoplastic resin (c).

Abstract: An aqueous treatment agent for wiping paper is capable of rendering tissue paper, toilet paper, and other types of wiping paper dry to the touch, highly smooth, nonsticky, and extremely soft while suppressing the slippery or wet feel thereof. The aqueous treatment agent comprises a water dispersion of a silicone rubber powder with an average particle diameter of 0.1 to 500 micrometers, a silicone oil, a surfactant, and water.

Abstract: A method of making siloxane-based polyamides which includes at least one repeating unit represented by the formula wherein X is a linear or branched C1-C30 alkylene chain; Y is a linear or branched C1-C20 alkylene chain; DP is an integer having a value of 10-500; n is an integer having a value 1-500. The method involves heating an intimate reaction mixture containing an olefinic acid and an organic diamine at a temperature greater than 100° C. and forming an organic diamide; and thereafter reacting the organic diamide with a hydride-terminated polydimethylsiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide.