Abstract: Hardener composition for condensation-crosslinking RTV-2 silicone compositions contain: (A) at least one crosslinker, (B) at least one catalyst, (C) at least one extender polymer, wherein the sum of the molar proportions of T and Q units in the extender polymer (C) is at least 25%.

Abstract: Disclosed herein are manganese, iron, cobalt, or nickel complexes containing 2,8-bis(imino)quinoline ligands and their use as catalysts or catalysts precursors for hydrosilylation reactions.

Abstract: A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrogenative condensation reaction in the presence of a zinc catalyst and requiring a low activation temperature.

Abstract: The present invention relates to an obtainment process of biodegradable polymers from a citric residue resulting from the processing of orange juice. The polymers obtained are polyesters classified as polyhydroxyalkanoates including, among them the poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate). The biodegradable polymer is obtained from the batch culture process or fed batch culture process with or without recirculation of the cells, using as a carbon source the pre-treated pressing liquor and/or the citric molasses. The polyhydroxyalkanoates, herein described, can be used as substitutes of the synthetic polyesters in different areas, including the food, pharmaceutical, medical, agricultural and other areas.

Abstract: Disclosed is a composition comprising a hydrolysate of an alkoxysilane compound, a hydrolysate of a siloxane compound represented by Formula (1), a surfactant, and an element having an electronegativity of 2.5 or less. In Formula (1), RA and RB independently represent a hydrogen atom, a phenyl group, —CaH2a+1, —(CH2)b(CF2)cCF3 or —CdH2d?1, RA and RB are not both hydrogen atoms simultaneously, RC and RD independently represent a single bond that links a silicon atom and an oxygen atom to form a cyclic siloxane structure, or each independently represent a hydrogen atom, a phenyl group, —CaH2a+1, —(CH2)b(CF2)cCF3, or —CdH2d?1, a represents an integer of 1 to 6, b represents an integer of 0 to 4, c represents an integer of 0 to 10, d represents an integer of 2 to 4, and n represents an integer of 3 or greater.

Abstract: Hardener composition for condensation-crosslinking RTV-2 silicone compositions contain (A) at least one crosslinker, (B) at least one crosslinking catalyst which is an alkali metal or alkaline earth metal compound which is not a hydroxide, and (D) at least one functional silane as a coupling agent.

Abstract: A polyorganosiloxane polyoxyalkylene block copolymer having one or more polyorganosiloxane blocks and one or more polyoxyalkylene blocks linked to each other via divalent radicals which comprises at least two silicon-bonded alkoxy groups, preferably of the form PS (A PO)m (A PS)n, wherein PO is a polyoxyalkylene block, PS represents a polyorganosiloxane block, A is a divalent radical, m and n have independently a value of at least 1, comprising at least one alkoxy-substituted siloxane unit of the formula (R?)q(OR)—SiO3?q/2 ?, wherein R represents an alkyl group having 1 to 4 carbon atoms and each R? represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or an alkoxy group of the formula —OR and q has a value of 0, 1 or 2, provided at least two silicon-bonded groups OR are present in the block copolymer.

Abstract: Carbanionic polymer chains that contain polyene mer can be provided with a block derived from one or more ethylenically unsaturated functional monomers after being reacted to include, at their respective termini, one or more, although preferably one, unit that is the radical of a cyclic compound, the ring structure of the cyclic compound comprising silicon atoms alternating with O, S or N atoms.

Abstract: The invention relates polysilazane-containing coatings for increasing the light permeability of sun-facing covers of solar cells. The coating for surfaces contains at least one polysilazane of formula (1) —(SiRR?R?—NR??1)n- (1), wherein R?, R?, R?? are the same or different or represent an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group, n being an integer and n being chosen in such a manner that the perhydropolysilazane has a number average molecular weight of 150 to 150,000 g/mol, a solvent and a catalyst. The cured coating has a thickness of at least 0.50-10 micrometer, preferably 0.2 to 5 micrometer, especially preferred 0.5 to 1.5 micrometer. It is especially suitable as transmission-promoting coating for use in sun-facing covers of solar cells.

Abstract: Provided is a process for making a saturated star hydrocarbon polymer. The process has the following steps: (A) hydrosilylating tetraethylene silicon with methyldichlorosilane in the presence of a hydrosilylating catalyst to form a chlorosilane dendrimer; (B) reacting the chlorosilane dendrimer with vinylmagnesium bromide in the presence of a lithium and/or organolithium initiator stepwise to build a higher generation chlorosilane dendrimer; (C) anionically polymerizing polybutadiene in the presence of a lithium and/or organolithium initiator to form living poly(butadienyl)lithium; (D) attaching the living poly(butadienyl)lithium to the higher generation dendrimer to form a star polybutadiene; and (E) hydrogenating the star polybutadiene to form the saturated star hydrocarbon polymer. There is also provided a saturated star hydrocarbon polymer made according to the above process and a polymer composition of a matrix ethylene polymer and the saturated star hydrocarbon polymer.

Abstract: A corrosion protection composition includes a mixture of three different silanes selected to interact and form a coating on metal substrates that has improved adhesion and durability as well as UV protection properties. Methods of manufacturing the corrosion protection composition include mixing the silanes together and further combining the silane mixture with other mixtures to arrive at the corrosion protection composition. Sonication may be a preferred manner of mixing together the various components of the mixtures.

Abstract: A process for the preparation of an organosilicon condensate which comprises reacting together a silicon containing a compound having at least one silanol group and a silicon containing compound having at least one —OR group or at least one silanol group (or a compound having both groups) in the presence of strontium oxide, barium oxide, strontium hydroxide or barium hydroxide and optionally a solvent such as water, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol and 2-butanol, acetone or toluene.

Abstract: Disclosed are a method for polymerizing polysilsesquioxane from a trialkoxysiloxane monomer, including: preparing an aqueous organic solution including a trialkoxysiloxane monomer, an organic solvent, water and a catalyst; and selectively preparing a polysilsesquioxane with a cage structure or a polysilsesquioxane with a ladder structure by adjusting the amount of the organic solvent or water in the aqueous organic solution, and a polysilsesquioxane with a cage structure or a polysilsesquioxane with a ladder structure prepared therefrom.

Abstract: Low molecular weight siloxane materials having one functional group are provided which have reduced tendency to form phase separated domains after polymerization. Two classes of siloxane materials are included: (1) symmetric siloxane macromonomers containing at least two monomer termini and one polymerizable functional group which is equidistant from the termini, and (2) assymetric siloxane macromonomers having at least one polymerizable functional group terminus and at least one oxygen-containing polar hydrophilic terminus selected from the group consisting of hydroxyl, ether, and polyether. Symmetric siloxane macromonomers having hydroxyl termini are useful for forming biocompatible materials, such as for contact lenses, tissue regeneration scaffold polymers, and coatings to reduce non-specific binding of proteins.

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts and also to novel organopolysiloxane polycondensation catalysts.

Abstract: Disclosed herein are metal-terpyridine complexes and their use in hydrosilylation reactions.

Abstract: A process for producing a polymer includes mixing (A) a polysiloxane compound and (B) a polycarbosilane compound in the presence of a catalyst, water, and an organic solvent, and heating the mixture.

Abstract: This invention relates to acrylic functional resin compositions. More particularly, this invention relates to Poly [organ-co-(meth)acryloxyorgano]silsequioxane resins that are curable upon exposure to ultraviolet radiation with photo initiator or upon heating with or without a free radical generator. The resin compositions have high storage stability at room temperature and produces films that are useful as planarization layer, interlayer dielectric, passivation layer, gas permeable layer, negative photoresist, antireflective coating, conformal coating and IC packaging.

Abstract: The present invention relates to new high-functionality, highly branched or hyperbranched polylysines, to processes for preparing them, and to their use.

Abstract: The present invention relates to a process for making up and/or caring for keratin materials, in which a composition is applied to the keratin materials, and especially to the lips, this composition containing, in a physiologically acceptable medium: a) a siloxane resin comprising the following units: (i) (R13SiO1/2)a (ii) (R22SiO2/2)b (iii) (R3SiO3/2)c and (iv) (SiO4/2)d with R1, R2 and R3 independently representing an alkyl group containing from 1 to 8 carbon atoms, an aryl group, a carbinol group or an amino group, a being between 0.05 and 0.5, b being between 0 and 0.3, c being greater than 0, d being between 0.05 and 0.6, a+b+c+d=1, on condition that more than 40 mol % of the groups R3 of the siloxane resin are propyl groups, and b) at least one phenyl silicone oil.

Abstract: RTV-organopolysiloxane compositions are crosslinkable by polycondensation and are devoid of alkyltin-based catalysts; novel organopolysiloxane polycondensation catalysts are useful therefor.

Abstract: Materials crosslinkable at room temperature by condensation are based on organosilicon compounds which cure to give permanently resilient materials, and which employ one or more compounds of the metals Li, Na, K, Mg, Ca, or Sr as catalyst.

Abstract: A curable silicone resin composition has excellent closed-system curability, adhesiveness, heat-resistant coloration stability, and balance between transparency and adhesive strength. The curable silicone resin composition is a curable silicone resin composition comprising 100 parts by mass of a silicone A, the weight-average molecular weight of which is 20,000 to 200,000, and which has 2 or more (meth)acryloyl groups per molecule; 10 parts by mass or more of a silicone B, the weight-average molecular weight of which is 1,000 or greater but less than 20,000, and which has 2 or more (meth)acryloyl groups per molecule; 2 parts by mass or more of a silicone C, the weight-average molecular weight of which is 300 or more but less than 1,000, the (meth)acrylic equivalent of which is less than 450 g/mol, and which has 2 or more (meth)acryloyl groups per molecule; and a radical initiator.

Abstract: The present invention relates to a process for producing an aramid silicone polymer. The present invention is characterized by reacting (A) a both-terminal amino-modified diorganopolysiloxane having a group represented by the following formula: —B—NH2 wherein B represents a divalent hydrocarbon group, at both terminals of a molecular chain, (B) an aromatic diamine, and (C) an aromatic dicarboxylic acid dihalide, in the presence of (D) an inorganic base, in (S1) water and (S2) an aprotic organic solvent, at a temperature of 10° C. or more. The present invention does not have to be carried out at a low temperature, and by-products can be easily treated. Furthermore, the present invention does not require a large amount of a reprecipitation solvent, and therefore it can be suitably used in mass production of an aramid silicone polymer.

Abstract: RTV-organopolysiloxane compositions are crosslinkable by polycondensation and are devoid of alkyltin-based catalysts; novel organopolysiloxane polycondensation catalysts are useful therefor.

Abstract: Dental article for preparing a dental impression comprising (i) a first paste composition, and (ii) a second paste composition reactive upon mixing with the first paste composition in a curing reaction, characterized in that the dental article is obtainable by forming a predetermined amount of the first paste composition and a predetermined amount of the second paste composition into a body wherein the first and second paste compositions are separated by an interface preventing mixing and curing of the first paste composition and the second past composition during storage of the dental article.

Abstract: Materials crosslinkable at room temperature by condensation, based on organosilicon compounds which cure to give permanently resilient materials, are catalyzed by a compound of the main or subgroups I and II in conjunction with an inorganic acid as a catalyst.

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts and also to novel organopolysiloxane polycondensation catalysts.

Abstract: Disclosed herein are manganese, iron, cobalt, or nickel complexes containing terdentate pyridine diimine ligands and their use as efficient and selective hydrosilylation catalysts.

Abstract: The invention relates to compounds (K) comprising A) 100 parts by weight of a pre-polymer (P) comprising units (E) in the backbone thereof that are selected from polyether and polyester units, wherein the pre-polymer (P) comprises at least one end group of the general formula (1) -L1-(CH2)y—SiR23-x(OR1)x (1), B) 1 to 100 parts by weight of silane (S) of the general formula (2) R4SiR23-Z(OR1)z (2), (G) 0 to 10 parts by weight of a curing catalyst (HK) that accelerates the curing of the compounds (K) in the presence of humidity, wherein L1 represents a divalent linking group selected from —O—, —S—, —(R3)N—, —O—CO—N(R3)—, —N(R3)—CO—O—, —N(R3)—CO—NH—, —NH—CO—N(R3)—, —N(R3)—CO—N(R3) and R1, R2, R3, x, y and z have the meanings cited in claim 1. R4 are hydrocarbon radicals having at least 7 hydrogen atoms. According to the invention, after hardening, the compounds (K) have high shear strength and are used as adhesives (K).

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts and also to novel organopolysiloxane polycondensation catalysts.

Abstract: MQ-T propyl siloxane resins comprising (R13SiO1/2)a, (R22SiO2/2)b, (R3SiO3/2)c, and (SiO4/2)d units, where at least 40 mole % of the R3 groups are propyl are disclosed. A method of preparing such siloxane resins by reacting a MQ siloxane resin with a T propyl siloxane resin is also disclosed. These siloxane resins are useful in a variety of personal, household, and medical care applications, and in particular, as a resin additive in pigmented cosmetic formulations.

Abstract: A triorganosiloxy end-capped organopolysiloxane, i.e., organopolysiloxane having a backbone consisting essentially of repeating (3,3,3-trifluoropropyl)methylsiloxane units and end-capped with triorganosiloxy groups is prepared by copolymerizing tris(3,3,3-trifluoropropyl)trimethylcyclo-trisiloxane with a silanol end-capped organopolysiloxane in the presence of an alkyllithium or lithium silanolate catalyst to form a silanol end-capped copolymer, and adding a trialkylsilyl triflate or strong acid in excess relative to the catalyst and a hexaorganodisilazane for effecting end-capping and neutralization.

Abstract: The invention relates azide functionalized poly(3-hexylthiophene)s. Various azide functionalized poly(3-hexylthiophene)s and intermediates are disclosed and described, as well as method for making novel monomers that are synthesized and transformed into P3HT-Nmp for use as organic conducting polymers in organic photovoltaic devices.

Abstract: The invention is a composition comprising a) one or more prepolymers having on average three or more aliphatic isocyanate groups and further containing alkoxysilane groups; b) one or more aromatic polyisocyanates; c) one or more compounds having at least one heterocyclic ring which hydrolyzes when exposed to moisture to form at least one isocyanate reactive group; d) one or more solvents; and e) one or more amine and/or organometallic polyurethane catalysts; wherein the ratio of aromatic isocyanate groups to aliphatic isocyanate groups in the composition is from about 0.5:1.0 to about 1.5:1.0, preferably about 0.9:1.0 to about 1.5:1.0, and the equivalent ratio of isocyanate groups to isocyanate reactive groups derivable from the one or more compounds having at least one hydrolyzable heterocylic ring is from about 0.8:1.0 to about 5.3:1.0, and most preferably about 1.5:1.0 to about 1.7:1.0.

Abstract: A novel multi-functional linear siloxane compound, a siloxane polymer prepared from the siloxane compound, and a process for forming a dielectric film by using the siloxane polymer. The linear siloxane polymer has enhanced mechanical properties (e.g., modulus), superior thermal stability, a low carbon content and a low hygroscopicity and is prepared by the homopolymerization of the linear siloxane compound or the copolymerization of the linear siloxane compound with another monomer. A dielectric film can be produced by heat-curing a coating solution containing the siloxane polymer which is highly reactive. The siloxane polymer prepared from the siloxane compound not only has satisfactory mechanical properties, thermal stability and crack resistance, but also exhibits a low hygroscopicity and excellent compatibility with pore-forming materials, which leads to a low dielectric constant.

Abstract: The membrane electrode assembly 1 has an anode 10, a cathode 20, and an electrolyte membrane 30 disposed between the anode and cathode; the anode and cathode are gas diffusion electrodes; the electrolyte membrane contains a solid electrolyte in which a plurality of pores with mean pore diameters of 1 to 30 nm are formed; and the solid electrolyte has a backbone comprising organic groups having one or more metal atoms, oxygen atoms bonded to the metal atoms, and carbon atoms bonded to the metal atoms or oxygen atoms, and also has functional groups with ion-exchange capabilities that are bonded to the organic groups in the pores.

Abstract: Provided are polycarbosilane and a method of producing the same. The polycarbosilane contains an allyl group, and thus can be cured by UV absorption when not exposed to the air.

Abstract: The present invention provides a silicone resin composition for an optical semiconductor device, comprising (A) 100 parts by mass of an organopolysiloxane having a weight average molecular weight of from 500 to 20000, reduced to polystyrene, and represented by the following average compositional formula (1), (CH3)aSi(OR1)b(OH)cO(4-a-b-c)/2??(1) wherein R1 is an organic group having 1 to 4 carbon atoms and a, b, and c are numbers satisfying the equations: 0.8?a?1.5, 0?b?0.3, 0.001?c?0.5, and 0.801?a+b+c<2, (B) 3 to 200 parts by mass of a white pigment, (C) 400 to 1000 parts by mass of an inorganic filler other than said white pigment, (D) 0.

Abstract: The present invention relates to a process for the preparation of composites from thermoplastic polymers and (semi)metal oxides, in particular silicon dioxide, wherein at least a part of the (semi)metal oxides is dispersed in the polymers in nanodispersed manner (nanocomposites). The invention relates to the composites obtainable by this process and their processing to give molded articles.

Abstract: Curable polyorganosiloxanes are provided that cure in the absence of a hydrosilylation catalyst. The cured polyorganosiloxanes have increased stability and can be used as encapsulation resin is at a temperature far lower than 300° C., have excellent light transmission properties (colorless transparency. in a wavelength region of from ultraviolet light to visible light, light resistance, heat resistance, resistance to moist heat and UV resistance, and do not generate cracks and peeling even in use over a long period of time.

Abstract: The invention provides a radiation-curable alkoxy silanized hyperbranched polyester acrylate, characterized in that the radiation-curable alkoxy silanized hyperbranched polyester acrylate is produced by using a hyperbranched molecule with at least 16 functionalities as a core; acrylating or methacrylating a portion of the terminal groups of the hyperbranched molecule; and terminating a portion of the end groups of the hyperbranched molecule with an isocyanated silane coupling agent. The acrylate of the invention can be formed into a coating on polar substrates, such as glass or metal, or used as an adhesive.

Abstract: A triorganosiloxy end-capped organopolysiloxane, i.e., organopolysiloxane having a backbone consisting essentially of repeating (3,3,3-trifluoropropyl)methylsiloxane units and end-capped with triorganosiloxy groups is prepared by copolymerizing tris(3,3,3-trifluoropropyl)trimethylcyclo-trisiloxane with a silanol end-capped organopolysiloxane in the presence of an alkyllithium or lithium silanolate catalyst to form a silanol end-capped copolymer, and adding a trialkylsilyl triflate or strong acid in excess relative to the catalyst and a hexaorganodisilazane for effecting end-capping and neutralization.

Abstract: RTV-1 compositions are continuously produced from essentially linear organosilicon compounds having at least two condensable groups bound to silicon, filler and, optionally, further constituents, by mixing in one step in a single pass through the mixing zone of a rotor-stator mixer, wherein the pressure at the outlet of the mixing apparatus is at least 100 hPa greater than that at the inlet of the mixing apparatus.

Abstract: The invention relates to a method for producing cross-linkable formulations. In a first step of the method, at least one ?,?-difunctional organic polymer of formula (1) X-A-X (1) is converted into organyloxysilyl-terminated polymers P1, using organofunctional silanes of formula (2) Y—R—Si—(R1)m(—OR2)3m (2), in the presence of catalysts (A) selected from the group consisting of potassium, iron, indium, zinc, bismuth and copper compounds.

Abstract: Novel silicone polyether copolymers of inverse structure of the formula 1, characterized in that no unsaturated functional groups caused by side reactions or conversion products thereof are present in the copolymer, and a process for preparation thereof, in which a polyether modified terminally and/or laterally with alkoxysilyl groups is reacted with silanes and/or siloxanes which bear one or more hydrolysis-labile groups, in a hydrolysis and condensation reaction.

Abstract: A method of making a polyether-polydialkylsiloxane block copolymer is provided. The method comprises providing a mixture comprising at least one alkylene oxide and at least one silanol-terminated polydialkylsiloxane; and polymerizing the mixture in the presence of a double metal cyanide complex catalyst, and optionally in the presence of an aprotic solvent and/or an antioxidant. A polyether-polydialkylsiloxane block copolymer having a molecular weight of 150-50,000 g/mole and having a polydispersity index of 1.0 to 1.5 made by the above method is also provided.

Abstract: To provide a material for forming an exposure light-blocking film which includes at least one of a silicon compound expressed by the following structural formula (1) and a silicon compound expressed by the following structural formula (2), wherein at least one of R1 and R2 is replaced by a substituent capable of absorbing exposure light. (where R1 and R2 may be the same or different, and each represents any one of a hydrogen atom, alkyl group, alkenyl group, cycloalkyl group and aryl group which are optionally substituted, and n is an integer of 2 or greater) (where R1, R2 and R3 may be the same or different, at least one of R1, R2 and R3 represents a hydrogen atom and the others represent any one of an alkyl group, alkenyl group, cycloalkyl group and aryl group which are optionally substituted, and n is an integer of 2 or greater).

Abstract: The invention relates to a process for the preparation of branched siloxanes containing R—SiO3/2 units, where R=organic radical, wherein straight-chain polysiloxanes containing silane hydrogen in the polymer chain are reacted in the presence of ammonium or metal carboxylates as a catalyst in the absence of hydroxy-functional organic compounds, and to siloxanes thus prepared and the use thereof in the preparation of polyurethane foams and antifoam formulations.

Abstract: The invention provides branched copolymers as precursors for preparing silicon carbide (SiC) ceramics represented by the general formulae: [Si(˜)RC(˜)H]xn[SiR1R2CH2]yn,??Formula Type-I wherein n is the degree of polymerization, 0.1?x<0.8, 0.2?y<0.9 and x+y=1; and R=methyl or H, R1 and R2 are randomly composed of hydrogen (H), allyl, methyl (Me), phenyl (Ph), propargyl or vinyl. Another branched copolymer is represented by the general formula: [Si(˜)RC(˜)H]xn[SiR1R2CH2]yn[SiR3R4CH2]zn??Formula Type-II wherein n is the degree of polymerization, 0.1?x<0.8, 0?y<0.8, 0.2?z<0.8 and x+y+z=1; and R=methyl or H, R1 and R2 are randomly composed of hydrogen (H), methyl (Me) and phenyl; R3 and R4 are randomly composed of H, allyl, methyl, phenyl (Ph), propargyl, and vinyl. The invention also provides methods for the preparation of such branched copolymers.