Abstract: Equilibrated trifluoromethanesulfonic acid-acidified ?,?-diacetoxypolydimethylsiloxanes, processes for the production thereof and SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA and a process for the production thereof are described, wherein the production of SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA is effected by reacting trifluoromethanesulfonic acid-acidified acetoxysiloxane with polyetherols optionally in the presence of buffer mixtures and optionally an additional condensation catalyst and optionally in the presence of an inert solvent.

Abstract: Two part silicone lamination adhesive compositions which cure via a condensation cure chemistry using titanium and/or zirconium based catalysts at room temperature are disclosed. The compositions comprise: (i) at least one condensation curable silyl terminated polymer having at least one hydrolysable and/or hydroxyl functional group(s) per molecule; (ii) a cross-linker; and (iii) a condensation catalyst selected from the group of titanates and zirconates. Polymer (i) is not stored in the same part as cross-linker (ii) and catalyst (iii). Catalyst (iii) is present in a molar amount which is at least 50% of the moisture present cumulatively in the parts of the composition. The molar ratio of silicon bonded hydroxyl groups in polymer (i) to hydrolysable groups in cross-linker (ii) is above 0.15. The molar ratio of the silicon bonded hydroxyl groups in polymer (i) to M-OR functions is greater than 10, where M is titanium or zirconium.

Abstract: Siloxanes having terminal hydroxy groups, and which have a content of cyclic siloxanes of not more than 5% by weight, are stabilized by addition of ammonia in gaseous form or as a solution in a protic or aprotic solvent or in the form of an ammonia-releasing compound in amounts of at least 0.01 ppm by weight and not more than 100 ppm by weight, calculated as ammonia and based on the total weight of the siloxanes having terminal hydroxy groups. Ammonia in gaseous form is preferably used.

Abstract: A room-temperature-curable silicone rubber composition comprises: (A) an organopolysiloxane having on silicon atoms in the molecular chain in one molecule at least two specific alkoxysilyl-containing groups; (B) an organopolysiloxane having on silicon atom in the molecular chain neither a hydroxyl group nor an alkoxy group; (C) an alkoxysilane or its partial hydrolysis and condensation product; (D) a condensation reaction catalyst; and optionally comprises (E) an adhesion promoter and/or (F) a reinforcing filler. The composition cures at room temperature due to contact with atmospheric moisture and exhibits an excellent adhesiveness to substrate in contact with the composition during the cure of the composition.

Abstract: Compositions and methods for controlled polymerization and/or oligomerization of silane (and optionally cyclosilane) compounds, including those of the general formulae SinH2n and SinH2n+2, as well as halosilanes and arylsilanes, to produce soluble polysilanes, polygermanes and/or polysilagermanes having low levels of carbon and metal contaminants, high molecular weights, low volatility, high purity, high solubility and/or high viscosity. The polysilanes, polygermanes and/or polysilagermanes are useful as a precursor to silicon- and/or germanium-containing conductor, semiconductor and dielectric films.

Abstract: There is disclosed a thermosetting composition for forming a silicon-containing film to form a silicon-containing film formed in a multilayer resist process used in lithography, including at least (A) a silicon-containing compound obtained by hydrolyzing and condensing a hydrolyzable silicon compound using an acid as a catalyst, (B) a thermal crosslinking accelerator (C) a monovalent or bivalent or more organic acid having 1 to 30 carbon atoms, (D) trivalent or more alcohol and (E) an organic solvent. There can be provided a composition for a silicon-containing film which can form a good pattern in a photoresist film, can form a silicon-containing film for an etching mask having a good dry etching resistance, can give a good storage stability and can be delaminated with a solution used in a delamination process in a multilayer resist process used for lithography, a substrate on which the silicon-containing film is formed, and further a method for forming a pattern.

Abstract: The present invention is characterized in that it is a process for synthesizing an organic/inorganic composite that not only comprises an oxide of silicon and metal, oxide which includes a bond being expressed by “M-O-M” (where “M” independently represents silicon atom or metal atom), but also possesses an organic group which is bonded to a part of silicone atoms at least; and it includes: a preparation step of preparing a raw-material solution by dissolving an organo alkoxysilane, which possesses one or more alkoxy groups and has the silicon atom that is bonded with the organic group by covalent bond, and a metallic compound, which includes the metal atom, in a first solvent, which is a polar solvent; a reaction step of synthesizing the organic/inorganic composite by not only hydrolyzing the organo alkoxysilane and the metallic compound but also condensing them by means of dehydration; and a removal step of adding a second solvent, which does not dissolve compatibly with a solution that has undergone the rea

Abstract: One object of the present invention is to provide a method for preparing a polyorganosiloxane without using any catalyst having corrosivity and toxicity such as an alkaline earth metal catalyst in a condensation reaction of at least one organic silicon compound having a silanol group and/or an alkoxy silyl group. The present invention is a method for preparing a polyorganosiloxane, wherein the method includes a step of condensation reacting at least one organic silicon compound having at least one —OX group bonding to a silicon atom in the molecule, wherein X is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms, in the presence of a catalyst, wherein the catalyst is at least one selected from the group having hydroxides or oxides of elements in Groups 3-15 of the periodic table.

Abstract: A room-temperature-curable silicone rubber composition comprises: (A) an organopolysiloxane having on silicon atoms in the molecular chain in one molecule at least two specific alkoxysilyl-containing groups; (B) an organopolysiloxane having on silicon atom in the molecular chain neither a hydroxyl group nor an alkoxy group; (C) an alkoxysilane or its partial hydrolysis and condensation product; (D) a condensation reaction catalyst; and optionally comprises (E) an adhesion promoter and/or (F) a re-inforcing filler. The composition cures at room temperature due to contact with atmospheric moisture and exhibits an excellent adhesiveness to substrate in contact with the composition during the cure of the composition.

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: 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: High refractive index copolymers with reduced glistenings are disclosed. The copolymers, which are particularly suitable for use as ophthalmic device materials, comprise a high molecular weight, reactive, linear polyethylene glycol component.

Abstract: A transparent silicone epoxy composition is provided. The transparent silicone epoxy composition comprises (a) at least an epoxy modified siloxane, (b) at least a silanol-containing siloxane and (c) a catalyst. Each epoxy modified siloxane molecule comprises at least two cycloaliphatic epoxy groups and epoxy modified siloxane in the transparent silicone epoxy composition is about 10˜89 weight percentage. Silanol-containing siloxane can be cross-linked with epoxy modified siloxane. Silanol-containing siloxane comprises at least two hydroxyl groups. Silanol-containing siloxane in the transparent silicone epoxy composition is about 89˜10 weight percentage. The catalyst in the transparent silicone epoxy composition is about 0.01˜1 weight percentage.

Abstract: Methods are disclosed for making crosslinked polysilanes and polygermanes, preferably having either hydrogen or halogen substituent groups. These crosslinked polymers are prepared by catalytic polymerization such as the dehalogenative coupling or dehydrocoupling. The crosslinked polymers having no more than 10% of the chain atoms involved in crosslinking. Also disclosed are compositions containing these crosslinked polymers in a solvent to enable the composition to be deposited on a substrate using a liquid deposition technique.

Abstract: A composition comprising (A) a hydrolytic condensate of a bisphenol A alkoxysilane, (B) silica colloid sol, and (C) a curing catalyst is coated and cured to a transparent substrate to form a transparent film having crack resistance, flexibility and water vapor barrier properties.

Abstract: The present invention provides a polyurethane which is non-sticky, exhibits superior handling properties and superior moldability, and has superior adhesive properties with silicones even if a surface activation treatment is not carried out beforehand. The polyurethane of the present invention contains polyol units and organic polyisocyanate units. The polyol units contain an alkenyl group-containing organopolysiloxane structure in an amount ranging from 0.01 to 20% by weight with respect to the weight of the aforementioned polyurethane.

Abstract: The invention relates to new types of polyester-polysiloxane block copolymers, to processes for their preparation and to their use.

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: A thermosetting composition containing an aluminosiloxane, a silicone oil containing silanol groups at both ends, an epoxy silicone, and a silicone elastomer. The thermosetting composition of the present invention can be used for, for example, encapsulating materials, coating materials, molding materials, surface-protecting materials, adhesive agents, bonding agents, and the like. Especially, in a case where the thermosetting composition of the present invention is used as an encapsulating material, the thermosetting composition is suitably used for, for example, photosemiconductor devices mounted with blue or white LED elements (backlights for liquid crystal displays, traffic lights, outdoor big displays, advertisement sign boards, and the like).

Abstract: Methods are disclosed of making linear and cross-linked, HMW (high molecular weight) polysilanes and polygermanes, polyperhydrosilanes and polyperhydrogermanes, functional liquids containing the same, and methods of using the liquids in a range of desirable applications. The silane and germane polymers are generally composed of chains of Si and/or Ge substituted with R? substituents, where each instance of R? is, for example, independently hydrogen, halogen, alkenyl, alkynyl, hydrocarbyl, aromatic hydrocarbyl, heterocyclic aromatic hydrocarbyl, SiR?3, GeR?3, PR?2, OR?, NR?2, or SR?; where each instance of R? is independently hydrogen or hydrocarbyl. The cross-linked polymers can be synthesized by dehalogenative coupling or dehydrocoupling. The linear polymers can be synthesized by ring-opening polymerization. The polymers can be further modified by halogenation and/or reaction with the source of hydride to furnish perhydrosilane and perhydrogermane polymers, which are used in liquid ink formulations.

Abstract: There is provided a curable composition having good curability and adhesion by using a non-organotin catalyst. The curable composition comprising (A) an organic polymer having a reactive silicon group as a silicon-containing group being capable of crosslinking by forming siloxane bonds, (B) one or more kinds selected from a titanium catalyst, an aluminum catalyst and a zirconium catalyst, and (C) a low molecular weight compound containing a hydrolyzable silicon group and having a molecular weight of 100 to 1,000, characterized in that a ratio (a/b) of the total mole (a) of titanium atoms, aluminum atoms and zirconium atoms of the component (B) to the total mole (b) of silicon atoms of the component (c) is larger than 0.08.

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: The invention relates to coating agents, containing (A) at least 50 wt. %, (in relation to the content of non-volatile substances in said coating agent), of at least one compound (A1) and/or (A1?) comprising at least two reactive groups of formula (I): —X—SiR?x(OR?)3-x, in which R?=hydrogen, alkyl or cycloalkyl, whereby the carbon chain can be interrupted by non-adjacent oxygen, sulphur or NRa groups, Ra=alkyl, cycloalkyl, aryl or aralkyl, X=a linear and/or branched alkene or cycloalkene group comprising between 2 and 20 carbon atoms, R?=alkyl, cycloalkyl, aryl or aralkyl, whereby the carbon chain can be interrupted by non-adjacent oxygen, sulphur or NRa groups, and x=0 to 2, (B) a catalyst for cross-linking the —Si(OR?)3-x units, and (C) an organic solvent or a mixture of organic solvents.

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: A process for producing a conjugated diene-based polymer which comprises, in the first modification, modifying a conjugated diene-based polymer having active chain ends, which is obtained by polymerizing a diene-based monomer singly or with other monomers and has a content of a cis-1,4 unit of 75% by mole or greater in the conjugated diene portion of the main chain, by reacting the active chain ends with a hydrocarbyloxysilane compound and reacting the modified polymer with a specific compound such as a hydrocarbyloxysilane compound, and a rubber composition containing the polymer modified in accordance with the above process and, preferably, 10 to 100 parts by weight of silica and/or carbon black per 100 parts by weight of the rubber component containing the modified polymer, are provided. The rubber composition containing silica and/or carbon black exhibits improved fracture properties, abrasion resistance, low heat buildup property and excellent workability.

Abstract: The invention provides a process for preparing SiOC-bonded polyorganosiloxanes by reacting, by processes known per se, hydroxyl-containing compounds with a stoichiometric excess of polyorganosiloxanes which contain —Si(H) units and are of the general formula (I) in the presence of one or more element compounds of main group III and/or of transition group 3 as a catalyst, wherein the reaction, on completion of conversion of the compounds containing hydroxyl groups, is continued until no further ?Si—H groups are detectable by gas volumetric means, and also the compounds prepared in this way and their use.

Abstract: The invention relates to a process for the preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers having (AB) repeat units, via reaction by methods known per se of polyetherdiols with a stoichiometric excess of ?,?-dihydropolydimethylsiloxanes, in the presence of one or more compounds of elements of main group 13 and/or of transition group 3 as catalyst, which comprises, after completed reaction of the alcohol component, continuing the reaction until no remaining ?Si(H) groups are detectable by a gas-volumetric method, and also to the compounds thus prepared, and to their use as surfactant additives for the production of polyurethane ether foams.

Abstract: Cyclic oligosiloxane is prepared through disproportionation reaction of organopolysiloxane in the presence of a catalyst. Cyclic oligosiloxane of high purity can be produced in high yields by using a catalyst having formula (4): wherein M is Al, Ti, Zr, Sn or Zn, p is the valence of M, and R4 is a monovalent hydrocarbon group or the like.

Abstract: Disclosed is a resin composition for LED encapsulation including an organic oligosiloxane hybrid prepared by non-hydrolytic condensation of organoalkoxysilane. More particularly, the resin composition for LED encapsulation includes an organic oligosiloxane hybrid prepared by non-hydrolytic condensation of organoalkoxysilane with organosilanediol or non-hydrolytic condensation of a mixture containing organoalkoxysilane and metal alkoxide with organosilanediol. The prepared organic oligosilane hybrid has an inorganic network structure with a high degree of condensation and contains at least one organic group or organic functional group. In addition, an encapsulated LED fabricated using the above resin composition for LED encapsulation is provided.

Abstract: The invention provides a process for producing a modified conjugated diene based polymer which attains favorable interaction between a rubber component and carbon black and/or silica, thereby improving dispersibility of the fillers, and which exhibits excellent properties such as heat-buildup-suppressing performance, fracture characteristics, and wear resistance; a modified conjugated diene based polymer produced through the process; a rubber composition containing the diene polymer; and a tire produced from the rubber composition and exhibiting the above properties.

Abstract: A curable silicone rubber composition comprising (A) a vinyl-containing organopolysiloxane, (B) an organohydrogenpolysiloxane, (C) an aluminum chelate catalyst, (D) a platinum catalyst, and (E) a tackifier establishes a sufficient bond strength to packaging materials including difficult-to-bond thermoplastic resins such as polyphthalamide resins and liquid crystal polymers and to electrodes of metals such as Ag, Au, Ni and Pd, and forms a transparent cured part. A semiconductor device encapsulated with the cured composition is reliable.

Abstract: The present invention provides a composition for sealing an optical device comprising (i) a silylated organopolysiloxane with a polystyrene equivalent weight average molecular weight of 5×104 or greater, represented by an average composition formula: R1a(OX)bSiO(4?a?b)/2 (wherein, R1 represents an alkyl group, alkenyl group, or aryl group; X represents a combination of a group represented by a formula —SiR2R3R4 (wherein, RE to R4 are monovalent hydrocarbon groups), and an alkyl group, alkenyl group, alkoxyalkyl group or acyl group; a represents a number within a range from 1.00 to 1.5; b represents a number that satisfies 0 b 2, and a+b satisfies 1.00 a+b 2), and (ii) a condensation catalyst, as well as a transparent cured product obtained by curing the composition, and a method of sealing a semiconductor element that comprises a step of applying the composition to a semiconductor element, and a step of curing the composition that has been applied to the semiconductor element.

Abstract: The present invention provides a novel photocurable composition containing an organic polymer having an epoxy group and/or oxetane group-containing silicon group at an end and a cationic photoinitiator. For example, the photocurable composition contains an organic polymer (A) having an epoxy group and/or oxetane group-containing silicon group at an end, and a cationic photoinitiator (B), the organic polymer (A) being produced by addition reaction between an organic polymer terminated with an unsaturated group and a hydrosilane compound having an epoxy group and/or an oxetane group.

Abstract: An epoxy/silicone mixed resin composition comprising (A?) an organosilicon compound containing at least one aliphatic unsaturated monovalent hydrocarbon group and at least one silicon atom-bonded hydroxyl group, (B) an epoxy resin containing at least one epoxy group, (C) an organohydrogenpolysiloxane, (D) a platinum group metal-based catalyst, and (E) an aluminum-based curing catalyst is used to encapsulate a light-emitting semiconductor member. The light-emitting semiconductor device undergoes little discoloration in a heat test, and has a high emission efficiency, a long life and reduced energy consumption.

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

Abstract: A process for producing a film forming composition, the process including hydrolyzing and condensing: (A) at least one silane compound selected from a compound (A-1) shown by the following general formula (1), a compound (A-2) shown by the following general formula (2), and a compound (A-3) shown by the following general formula (3), RaSi(OR1)4-a??(1) Si(OR2)4??(2) R3b(R4O)3-bSi—(R7)d—Si(OR5)3-cR6c??(3); and (B) a cyclic silane compound shown by the following general formula (4):

Abstract: A silicone resin composition is provided, which includes an alkenyl group-containing polysiloxane represented by the following average composition formula (PSA(1)), a hydro group-containing polysiloxane represented by the following average composition formula (PSA(2)), two kinds of polysiloxane, both having opposite ends sealed with a vinyl group, which are represented by the following formulas (PSC(1) and PSC(4)), and a hydrosilylating catalyst:

Abstract: An object of the present invention is to provide a low-modulus, high elongation sealant having improved dynamic durability, desirable mechanical properties, and good workability. The present invention provides a sealant containing an oxyalkylene polymer (A) having a number-average molecular weight of 20,000 to 50,000 and 0.8 or more of reactive silicon groups per molecule on average; 10 parts by weight or more of a plasticizer (B) per 100 parts by weight of the polymer (A); a filler (C); and a curing catalyst (D). This sealant has an improved durability and can achieve the above-described object.

Abstract: A non-drip, preferably self-adhesive, silicone elastomer composition crosslinkable by polyaddition, such as those polyorganosilanes (POS) bearing C2?C6?Si-alkenyl units and ?Si—H units but excluding fluorinated POS. The composition includes at least a thixotropic additive containing at least a fluorinated resin, preferably based on polyfluoroethylene (PTFE). The composition may be prepared from a Si—Vi polydimethylsiloxane (PDMS) and a Si—H PDMS crosslinked by platinum catalysis. Polytetrafluorethylene, a filler, particularly one containing silicone, optionally a ternary adherence promoter such as vinyltrimethosilane/glycidoxypropyltrimethoxysilane/butyl orthotitanate, and other typical additives may be added to the composition. The composition (not excluding the fluorinated POS as a possible constituent in the composition) may be used to produce joints in situ and/or as an adhesive, particularly in upholstery.

Abstract: A new silicone condensation reaction, the condensation between an alkoxy silane or siloxane and an organo-hydrosilane or siloxane and catalysts therefore is described and claimed.

Abstract: Disclosed are abrasion and impact resistant coating compositions, and substrates coated therewith. These coating compositions provide high abrasion and impact resistance, chemical protection to the substrate, and exhibit enhanced stability to high temperature and high humidity conditions. Coating compositions may also be tailored to provide a balanced combination of abrasion resistance, impact resistance, and weatherability. These coatings may be transparent or not, depending on the intended applications. These coatings may also comprise additives such as UV absorbers, corrosion inhibitors, and electrically conductive materials. Substrates for use herein may be plastic or metal.

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: Described is the use of nanoscale metal oxide particles as catalysts for the thermal and/or photochemical polymerization of species having at least one polymerizable carbon-carbon multiple bond and/or at least one carbon containing ring capable of undergoing a ring opening polymerization.

Abstract: A thermoconductive liquid silicone rubber composition is provided for fixing rolls. The composition is capable of producing silicone rubber of superior thermal conductivity and small compression set after curing. The thermoconductive liquid silicone rubber composition contains (A) a diorganopolysiloxane with at least two silicon bonded alkenyl groups per molecule, (B) an alumina powder with an average particle size not more than 10 &mgr;m and an ignition loss of not more than 0.15 weight percent, (C) an organohydrogenpolysiloxane having at least two silicon bonded hydrogen atoms per molecule, and (D) a platinum catalyst. Fluororesin coated fixing rolls can be fabricated by providing a fluororesin layer on the peripheral surface of a roll shaft, with the silicone rubber layer interposed between it and the surface.

Abstract: The present invention relates to a kit for producing condensation cross-linking silicon mixtures containing bi-functionally terminated diorganopolysiloxanes, acetoxysilane cross-linking agents, and optionally, filling materials, suitable additives, pigments, colorants, anti-oxidation pigments, anti-heat pigments, and light-protection pigments in addition to solvents and plasticizers. Said kit contains water and an accelerator in the form of a basic neutral iron or aluminum salt with a mineral acid, especially an aluminum alum of ammonia and/or alkaline metals, as an accelerating cross-linking agent.

Abstract: A silicone composition for preparing a cured silicone product, the composition prepared by mixing: (A) an organopolysiloxane containing an average of at least two epoxy-functional organic groups per molecules; (B) a curing agent in an amount sufficient to cure the composition, provided the curing agent is free of phenolic hydroxy groups; (C) an electrically conductive filler in an amount sufficient to impart electrical conductivity to the silicone product, wherein the filler comprises particles having at least an outer surface of a metal selected from silver, gold, platinum, palladium, and alloys thereof; and (D) an effective amount of a hydroxy-functional organic compound having a molecular weight up to about 1000 and containing at least one hydroxy group per molecule, provided the compound does not substantially inhibit cure of the composition. A cured silicone product and a multi-part silicone composition.

Abstract: A method for producing organopolysiloxane comprising (A) polymerizing or increasing the viscosity of straight-chain or cyclic organo(poly)siloxane using an acid-active solid catalyst, (B) adding at least one zeolite solid adsorbent, and (C) thereafter filtering off the adsorbent.

Abstract: The present invention relates to surface-modified insulators obtained by coating an insulator body with a preparation containing at least one organofluorine-functional silane and/or siloxane, at least one mineral acid and at least one metal salt of aluminum(III), tin(II), tin(IV), iron(III) or titanium(III) as catalyst, to a process for their preparation and to the use of the preparation for coating insulators.

Abstract: Antireflective compositions characterized by the presence of an SiO-containing polymer having pendant chromophore moieties are useful antireflective coating/hardmask compositions in lithographic processes. These compositions provide outstanding optical, mechanical and etch selectivity properties while being applicable using spin-on application techniques. The compositions are especially useful in lithographic processes used to configure underlying material layers on a substrate, especially metal or semiconductor layers.

Abstract: A polyorganosiloxane-based composition for film formation which gives a film having low dielectric constant and high modulus of elasticity and useful as an interlayer insulating film in semiconductor devices and the like.