Abstract: There is disclosed a polyolefin composition which can be extruded at relatively high rates to provide extrudate having a low surface roughness (sharkskin), said composition comprising (A) 100 parts by weight of a polyolefin resin; and (B) 0.01 to 1 part by weight of a hydroxy-functional diorganopolysiloxane process aid, said diorganopolysiloxane having a number average molecular weight of at least 10,000. In particularly preferred embodiments, a hydroxy-functional diorganopolysiloxane in combination with a low density polyethylene is used as a process aid for linear low density polyethylene.

Abstract: A curable liquid silicone rubber coating composition is disclosed. The curable composition of the invention exhibits excellent infiltrability and can be used to for thin coatings on synthetic fabrics, without using a dilution solvent. The cured composition is tackfree coating film with excellent adherence to synthetic fabrics. The curable composition includes: (A) a diorganopolysiloxane that contains at least 2 alkenyl groups in each molecule; (B) an organopolysiloxane resin; (C) an inorganic filler; (D) an organohydrogenpolysiloxane that contains at least 2 silicon-bonded hydrogen atoms in each molecule; (E) a platinum group catalyst; (F) an epoxy-functional organosilicon compound; and (G) an organotitanium compound.

Abstract: The present invention relates to a silica reinforced rubber composition and to pneumatic tires having treads comprised of the silica reinforced rubber compositions.The silica reinforced rubber composition comprises at least one elastomer, silica, a silica coupler, a hydrophobating agent and, optionally, carbon black.

Abstract: The surface-modified fillers according to the invention are manufactured by treating oxidic or siliceous fillers with a silane of the formulaR.sup.1 R.sup.2 R.sup.3 Si--X.sup.1 --(--S.sub.x --Y--).sub.m --(--S.sub.x --X.sup.2 --SiR.sup.1 R.sup.2 R.sup.3).sub.nand are used for the manufacture of rubber vulcanizates, particularly tyres, with reduced dynamic damping and favourable abrasion behaviour.

Abstract: A process for the incorporation of silica into a polymer in latex in which a silica is treated with an organo silicon compound coupling agent in aqueous suspension to form a compatibilized silica and then contacting a polymer latex with the compatibilized silica whereby the silica becomes substantially uniformly distributed throughout the latex and can be recovered when the latex is coagulated to yield little residual silica in the liquid residue from the latex. Also described is a process for preparing the compatibilized silica.

Abstract: The invention concerns a dispersion powder composition which is redispersible in water and is made from water-insoluble homopolymers or copolymers of preferably ethylenically unsaturated monomers and one or more organosilicon compounds plus, optionally, other additives such as protective colloids and anti-blocking agents. The composition is obtained by: a) polymerizing one or more monomers in the presence of 0.1 to 30% by wt., relative to the total weight of the monomers, of one or more silicon compounds which are dispersible in water and which have a boiling point at normal pressure of >160.degree. C., selected from the group comprising the silanes, polysilanes, oligosiloxanes, polysiloxanes, carbosilanes, polycarbosilanes, carbosiloxanes, polycarbosiloxanes and polysilylenedisiloxanes and: b) spray-drying the product thus obtained, either before or after addition of the additives mentioned.

Abstract: The present invention relates to a releasable aqueous coating composition containing (A) a resin dispersion containing a carbonyl group-containing copolymer aqueous dispersion and a polyhydrazide compound in such a ratio that an amount of hydrazide group is in the range of 0.02 to 3.0 equivalents per one equivalent of carbonyl group in the emulsion particle, and (B) a release assistant; and a method of temporarily protecting a finished coating film of an automobile body, which method comprises coating said coating composition onto a surface of a finished cured coating film coated onto the automobile body.

Abstract: A curable composition comprises a polysiloxane additive having at least one unit R.sub.a SiO.sub.(4-a)/2 and at least one unit R.sub.b R.sup.1 SiO.sub.(3-b)/2 wherein R is a C.sub.1-12 hydrocarbon, R.sup.1 is --(CH.sub.2).sub.n (OR.sup.2).sub.m X where R.sup.2 is C.sub.2-3 alkylene, a is 0, 1, 2 or 3 and b is 0, 1 or 2, and X is OH or --OCOCR.sup.3 .dbd.CH.sub.2 where R.sup.3 is H, methyl or ethyl, n is 2 to 5 and m is 8 to 50, provided where X is OH, n is 3 and m is 18. The compositions are useful with polyacrylates as overprint varnishes with improved stability of friction coefficients. Also disclosed is a method for making the additives.

Abstract: The present invention provides a method of preparing an orthopedic cast comprising the step of coating a porous flexible substrate with a water-curable resin composition composed of a water-reactive alkoxysilane terminated resin having at least one hydrolyzable group per molecule. The resin composition has a viscosity of no greater than about 500 Pa-s under ambient conditions and contains less than about 1 wt-% of a solvent, based on the total weight of the resin composition.

Abstract: Transparent substrates are rendered resistant to fogging by the application of a hardcoat composition comprising finely divided silica, a multi-functional olefin containing two or more olefinic moieties and one or more divalent oxyalkylene radicals having the formula:--((CX2).sub.n O).sub.x ((CX2)O).sub.y --where the sum of the x stoichiometric subscripts for each divalent oxyalkylene radical and the sum of the y stoichiometric subscripts for each divalent oxyalkylene radical when said sums are added together is ten or greater and the stoichiometric subscripts n and m are different and have values independently ranging from one to ten, where each X is independently selected from the group consisting of hydrogen, one to forty carbon atom monovalent hydrocarbon radicals and six to forty carbon atom monovalent aromatic hydrocarbon and an olefinically functionalized trialkoxysilane followed by curing.

Abstract: A hemocompatible surface-modifying additive is provided for modifying polyurethane or polyurethane urea substrates. The additive has a polyurethane or polyurethane urea hard block or an alternative block which is miscible with the poly(urethane) or poly(urethane-urea) base polymer, a polysiloxane hydrophobic soft block, an optional hydrophilic spacer and a peptide selected from the group consisting of Arg-Gly-Asp, X-Arg-Gly-Asp, Arg-Gly-Asp-X and X-Arg-Gly-Asp-X', wherein X and X' are amino acids.

Abstract: Describes a coating composition for the preparation of abrasion resistant coatings consisting essentially of:(a) 5 to 35 weight percent of a silane monomer mixture of (i) C.sub.1 -C.sub.12 alkyl tri(C.sub.1 -C.sub.6)alkoxysilane and (ii) tetra(C.sub.1 -C.sub.6)alkoxysilane, the weight ratio of (i) to (ii) being from 3:1 to 1:3;(b) 1 to 9 weight percent of polyvinyl alcohol that is at least 72 percent hydrolyzed;(c) a solvating amount of lower aliphatic alcohol;(d) a catalytic amount of water-soluble acid;(e) a leveling amount of nonionic surfactant; and(f) water in an amount sufficient to formhydrolysates of the silane monomers and to solubilize the polyvinyl alcohol and acid. Further described are transparent articles and photochromic articles comprising organic polymeric host material, organic photochromic compound(s), and a cured abrasion resistant coating prepared from the coating composition.

Abstract: A granular material is presented comprising inorganic particles coated with an organometallic polymeric binder, the organometallic polymeric binder comprising the reaction product of water with at least one component of a binder precursor composition. The binder precursor composition is selected from the group consisting of 1) a first composition comprising an inert organic polymer and a hydrolyzable liquid organometallic solvent; 2) a second composition comprising a water reactive organic polymer dissolved in an inert organic solvent; and 3) a third composition comprising the water reactive organic polymer dissolved in the hydrolyzable liquid organometallic solvent.

Abstract: The invention is directed to a polymer composition comprising:a) a blend comprising at least one polyamide and at least one polyphenylene ether;b) at least one polymeric siloxane compound; andc) at least one boron compound.

Abstract: An aqueous dispersion of a fluorine-containing polymer, wherein 1 to 20 parts by weight of solids of an organosilicon compound is admixed on the basis of 100 parts by weight of solids in the fluorine-containing-polymer-dispersed aqueous composition and this aqueous dispersion is useful for a paint capable of forming a coating film which is excellent in adhesion to various base materials, film forming property, weatherability and soil resistance.

Abstract: A two-part composition comprising a liquid composition (I) composed of the components (A), (C), and (E) described below and a liquid composition (II) composed of the components (A) (B), (C), and (D) described below, which yield upon mixing a curable liquid silicone composition comprising(A) an alkenyl-substituted poyorganopolysiloxane;(B) a hydrogen-substituted organopolysiloxane in an amount that provides 0.3 to 10 moles silicon-bonded hydrogen from component (B) per 1 mole alkenyl in component (A);(C) an inorganic filler that has a specific surface of 50 to 500 m.sup.2 /g;(D) an alkoxy-substituted organopolysiloxane; and(E) platinum catalyst in a quantity sufficient to cure the instant composition;wherein the curable silicone composition that results when liquid composition (I) and liquid composition (II) are mixed, is thixotropic and has a viscosity, immediately upon the mixing that is greater than the viscosity of liquid composition (II).

Abstract: There is disclosed a heat resistant organopolysiloxane composition comprising:(A) 100 parts by weight of an organopolysiloxane having a viscosity of 100 to 1,000,000 centistokes at 25.degree. C.;(B) 0.001 to 10 parts by weight of a reaction product of an alkali metal silanolate compound with cerium chloride or a cerium carboxylate; and(C) a diorganopolysiloxane having silicon-bonded hydrogen groups only at its molecular chain terminals, component (C) being present in a quantity sufficient to provide 1 to 10,000 parts per million of silicon-bonded hydrogen based on the total weight of said composition.

Abstract: The present invention provides flame-resistant polycarbonate moulding compositions with a concentration of alkali metal or alkaline earth metal salts and of silicon compounds and their preparation.

Abstract: A modified polyurethane structionally incorporating filler having active hydrogen groups on a surface thereof into a polyurethane polymer. The filler is first fluidized with a polyol and then reacted with a linking component having an organo reactive group that is reactive with an isocyanate. Polyisocyanate and additional polyol are added to the reaction mixture such that the isocyanate reacts with the linking component and the polyol to form a polymer wherein the filler is an integral unit in the polymer. The resultant modified polyurethane has good dynamic properties and is surprisingly resilient. Preferred fillers are sand, clay talc and mixtures thereof.

Abstract: Photographic film sheet picking-up device in a feeding apparatus for feeding such sheets from a station containing at least one sheet to a following station, such as a transport or processing station where the film sheets are to be processed one at a time, wherein such sheet picking-up device comprises rubber suction cups containing at least one antistatic compound selected within the group consisting of a) a metal salt selected within the group consisting of perfluoroalkylsulfonylmethide compounds and perfluoroalkylsulfonylimide compounds, b) a perfluoroalkyl(ene)polyoxyethylene non-ionic type surfactant, c) a modified polyoxyethylenepolysiloxane type surfactant, and a mixture of such compounds.

Abstract: An improved gel coat for integral molded products having increased hardness consists of a synthetic resin mixed with tabular alumina and a surface treating agent such as gamma-Methacryloxypropyltrimethoxysilane. The gel coat may be applied as a first layer over a mold, pattern, part, or other surface with a filler reinforced resin layer applied to the first layer or with an intermediate layer of resin filled with calcium silicate applied between the gel coat and the reinforced layer. The gel coat may also be used as a surface coating for steel, composite, and concrete structures.

Abstract: The invention provides a novel coating composition comprising a first component (i.e. 100 parts by weight of a fluorine-containing copolymer), a second component (i.e. 0.1-20 parts by weight of an alkyl silicate), and a third component (i.e. 0.05-3 parts by weight of a water-soluble polyether-modified silicone oil and/or 1-25 parts by weight of a polyoxytetramethylene glycol). The fluorine-containing copolymer has a hydroxyl value of 80-200 mg KOH per 1g thereof and is prepared by copolymerizing 40-65 mol % of a fluoroolefin, 14-50 mo1% of a copolymerizable vinyl-containing compound, 12-25 mol % of a polymerizable hydroxyl-containing compound, and 0.1-12 mol % of at least one other copolymerizable compound. A cured coated film prepared from the coating composition is superior in elasticity and weathering and stain resistances.

Abstract: A coating composition containing 100 parts by weight of a resin composition consisting of 30 to 90 parts by weight of (A) a hydroxyl group-containing polyester resin and 10 to 70 parts by weight of (B) a melamine resin curing agent selected from the group consisting of a mixture of methyl etherified melamine resin with butyl etherified melamine resin and a melamine resin having three or more on an average of methyl etherified methylol group per one of triazine nucleus and having a number average molecular weight of 1,000 or less; 0.2 to 3.0 parts by weight, calculated in terms of an amount of a sulfonic acid compound, of (C) a curing catalyst consisting of a neutralized product between the sulfonic acid compound and an amine; and 1 to 20 parts by weight of (D) a silicone compound mainly consisting of polydimethylsiloxane chain and having at least one selected from hydroxyl group, carboxyl group, epoxy group and mercapto group as a functional group.

Abstract: An improved thermoplastic molding composition containing polycarbonate and a polyester copolymer based on cyclohexane-dimethanol, ethylene glycol and phthalic acid is disclosed. Improved resistance to gamma-radiation results from the incorporation of a siloxane compound which contains an oxirane group.

Abstract: Secondary contact adhesion or self-bonding in cured liquid injection molding silicone compositions is reduced by the inclusion in the composition of an inhibitor compound selected from the group consisting of phenyl fluids, titanate esters, and silicate esters.

Abstract: A thermoplastic molding composition containing an aromatic polycarbonate and a particular siloxane compound is disclosed. The composition which is based on a polycarbonate resin having bifunctional structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl, or C.sub.7 -C.sub.12 -aralkyl,m is an integer from 4 to 7,R.sup.3 and R.sup.4 selected individually for each X, denote, independently of one another, hydrogen or C.sub.1 -C.sub.6 -alkyl, andX stands for carbon,under the condition that R.sup.3 and R.sup.4 are both alkyl groups on at least one X atom, andcontains from 0.001 to 1% by weight of at least one siloxane corresponding to formula (II) ##STR2## wherein R denotes hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.6 -C.sub.10 -aryl or C.sub.1 -C.sub.

Abstract: A haloceramic material having integral, interpenetrating networks of haloelastomer, metal oxide, and optionally polyorganosiloxane forms highly advantageous seals such as gaskets, tapes, diaphragms, bearing, o-rings and the like. The haloceramer seals properties include a combination of thermal stability, chemical inertness and flexibility.

Abstract: There is disclosed a heat-resistant agent which exhibits good solubility in various organopolysiloxanes and which confers superior heat-resistance thereto, said heat-resistant agent having the formula ##STR1## wherein R.sup.2 is independently selected from hydrocarbon or halogenated hydrocarbon groups having 1 to 10 carbon atoms, R.sup.1 is independently selected from R.sup.2 or a eugenol residue, m is an integer having an average value of 5 to 500 and n is an integer having an average value of 0 to 500, with the proviso that there is at least one eugenol residue in the molecule. Also disclosed is a composition comprising an organopolysiloxane and the above described heat-resistant agent.

Abstract: The invention relates to halogen-free, flameproofed, thermoplastic moulding compounds made from polycarbonate and graft polymers which may optionally contain a copolymer and/or polyalkylene terephthalate, wherein a silicon resin in combination with a blend of monophosphate and oligomeric polyphosphates is used as a flameproofing agent.

Abstract: The present invention provides special silanes, their preparation and their use as plastics additives for improving the mechanical and flameproofing properties of the plastics.

Abstract: Disclosed are a jet ink composition and a method for printing on wet glass, PET, and aluminum surfaces under humid conditions messages having good penetration, adhesion and abrasion resistance, said composition comprising an organic solvent, a flexible thermoplastic urethane resin, silicone resin, a silane, and a colorant.

Abstract: A surface-segregatable, melt-extrudable thermoplastic composition is provided which includes at least one thermoplastic polyolefin and at least one additive having the general formula, ##STR1## in which: (A) R.sub.1 -R.sub.9 are independently selected monovalent C.sub.1 -C.sub.3 alkyl groups;(B) R.sub.10 is hydrogen or a monovalent C.sub.1 -C.sub.3 alkyl group;(C) m represents an integer of from 1 to about 4;(D) n represents an integer of from 0 to about 3;(E) the sum of m and n is in the range of from 1 to about 4;(F) p represents an integer of from 0 to about 5;(G) x represents an integer of from 1 to about 10;(H) y represents an integer of from 0 to about 5;(I) the ratio of x to y is equal to or greater than 2;(J) the additive has a molecular weight of from about 350 to about 1,400; and(K) the additive is present in an amount of from about 0.5 to about 5 percent by weight, based on the amount of thermoplastic polyolefin.

Abstract: Composition including a silicone and an olefin polymer, the olefin polymer exhibiting a molecular mass distribution defined by an M.sub.w /M.sub.n ratio not exceeding 12.Object manufactured from such a composition.

Abstract: White-pigmented polymers (particularly, polyolefins such as polyethylene) containing white pigments treated with at least one silane or a mixture of at least one silane and at least one polysiloxane are disclosed to improve processibility in compounding and improve performance properties such as lacing resistance in a polymeric matrix.

Abstract: The invention relates to the use of momodisperse, non-porous, spherical particles based on SiO.sub.2, TiO.sub.2, ZrO.sub.2, Al.sub.2 O.sub.3, V.sub.2 O.sub.5, Nb.sub.2 O.sub.5 or mixed systems thereof, which are optionally modified on the surface by covalently bonded organic groups, as fillers in organic matrix materials, the refractive index of the particles being adapted to the refractive index of the organic matrix according to the use.Polymeric or polymerizable systems which comprise these particles can be used, for example, as embedding compositions for optical, electro-optical and optoelectronic components. Such embedding compositions show an improved optical homogeneity. Light-emitting diodes produced with them are distinguished, inter alia, by an improved light yield.

Abstract: A rubber composition suitable for use in tread of tires, particularly studless tires having increased digging and adhesive frictions to improve characteristics on icy roads of the tires without substantial deterioration of the durability of the tires or with minimizing the deterioration, which comprises a diene rubber component, 3 to 30 parts by weight of an ebonite powder and 0.1 to 3 parts by weight of a silylating agent, respectively, per 100 parts by weight of the rubber component.

Abstract: This invention relates to polymers having enhanced hydrophilicity and thermal regulative properties. Exemplary polymers include aliphatic polyamide polymers and polyester polymers. The polymer has bonded thereto a hydrophilic polysiloxane having an affinity for the polymer and having a molecular weight greater than about 1000 g/mol preferably greater than about 2000 g/mol, and preferably greater than about 4000 g/mol. The polymer has substantially no polymerization with the hydrophilic polysiloxane. Alternatively, an aliphatic polyamide polymer is provided having enhanced hydrophilicity and thermal regulative properties. The polymer has bonded thereto an anionic hydrophilic polysiloxane having an affinity for the aliphatic polyamide polymer. The aliphatic polyamide polymer has substantially no polymerization with the anionic hydrophilic siloxane.

Abstract: A processable blend having high temperature and thermal shock resistance properties includes a resin blend which includes at least one first silicone polymer and at least one second silicone polymer. The processable blend is ceramitizable at a temperature above about 1100.degree. F. A method of producing an article with high temperature and thermal shock resistance properties includes forming a silicone blend of at least one first silicone polymer and at least one second silicone polymer, wherein the blend is ceramitizable at a temperature above about 1100.degree. F.; forming the blend into the shape of the desired article; and, at least partially curing at least one of said silicone polymers at a temperature below the ceramitization temperature.

Abstract: The present invention provides a bouncing putty with low density and other desirable properties. The density is preferably between 0.33 and 0.95 g/cc, preferably between about 0.5 and 0.75 g/cc and particularly preferably about 0.6 g/cc. Borosilicone rubber base is mixed with density-reducing filler, preferably in the form of thermoplastic microspheres. Addition of a thinning agent reduces stiffness and addition of a lubricating oil improves the handling characteristics. A moisture scavenger can be added to maintain the characteristics of the bouncing putty even if some moisture is absorbed during use. A polarity modifier such as glycerine can be added to soften the putty. If desired, a colorant can be added as well.

Abstract: White-pigmented polymers (particularly, polyolefins such as polyethylene) containing white pigments treated with at least one silane or a mixture of at least one silane and at least one polysiloxane are disclosed to improve processibility in compounding and improve performance properties such as lacing resistance in a polymeric matrix.

Abstract: The invention relates to a mixture of(A) ABS graft polymer and(B) 0.05 to 2% by weight (based on the mixture) of a polyether- or polyester-grafted siliconewith improved surface gloss.

Abstract: A silicone rubber composition comprising an organopolysiloxane and a reinforcing silica filler can be improved in crepe hardening and shelf stability by blending a specific compound as a wetter.

Abstract: One aspect of the present invention relates to a process for preparing plastic lenses having a high-refractive index comprising forming a mixture containing one or more polyisocyanate compounds; one or more active hydrogen compounds selected from the group consisting of a polyol compound having no sulfur atom, a polyol compound having at least one sulfur atom, and a polythiol compound having at least one sulfur atom in addition to the sulfur atom contained in mercapto group and at least one internal releasing agent and then casting and polymerizing the mixture.

Abstract: Water-dispersible, storage-stable pulverulent compositions of matter, well adopted as adjuvants for hydraulic binders used in the construction industry, comprise particulates of a water-insoluble film-forming vinyl and/or acrylic polymer, e.g., a vinyl ester, alkyl(meth)acrylate or vinylaromatic homopolymer or copolymer, containing from 0.5 to 20 parts by weight of at least one silicone, e.g., an alkali or alkaline earth metal organosiliconate or a liquid organopolysiloxane, per 100 parts by weight of such film-forming polymer.

Abstract: The invention relates to a rubber-elastic composition which comprises a polyether material, and which in the completely vulcanized and completely polymerized form, contain 0.1 to 15 wt. %, relative to the total weight of the composition, of at least one hydrophilic nature imparting agent selecting from the group consisting of a hydrophilic silicone oil having one or more siloxane groups as a hydrophobic part and one or more ether groups as a hydrophilic part, a fluorinated hydro-carbon, a block copolymer of ethylene oxide/propylene oxide, a fatty alcohol derivative, an alkyl phenol derivative, a fatty amine, an amine oxide, a fatty acid glycol and glycerin derivative, a fatty acid, and a fatty acid monoester. The composition is suitable as dental impression composition and has, in the completely polymerized state, even with multiple disinfections in an aqueous disinfecting solution, a continuing good ability to flow on (small wetting angle) and an unchanged dimensional stability.

Abstract: A method for forming a polymer with a decreased surface energy. The method comprises the steps of mixing from about 99.5% to about 95.0% of a polymer selected from the group consisting of polyolefin and polyester with from about 0.5% to about 5.0% of a surface modifying agent having the structure R.sup.1 --A--Si (R.sup.2 R.sup.3)--O--[Si(R.sup.4 R.sup.5)--O].sub.n --Si--(R.sup.6 R.sup.7)--A--R.sup.8, and forming the mix of polymer and additive to a desired form. R.sup.1 and R.sup.8 are selected from the group consisting of derivatives of aliphatic or aliphatic/aromatic alcohols or mono-acids with a molecular weight of between about 250 to about 600 daltons, and A is selected from the group consisting of --O--, --NH--C(O)--NH--(CH.sub.2).sub.3 --, and --C(O)--NH--(CH.sub.2).sub.3 --. The agent is substantially intimately mixed with the polymer.

Abstract: Polyester/elastomer composites are produced by vulcanizing a polyester which contains aliphatic double bonds in the presence of a vulcanizate comprising:I. 100 parts by weight of a rubber,II. 0 to 300 parts by weight of fillers,III. 1 to 10 parts by weight of peroxidic vulcanization agent,IV. 0.5 to 4 parts by weight of vulcanization activators,V. 0 to 150 parts by weight of plasticizer andVI. 0.5 to 10 parts by weight of a silane of the formulaX--R'--Si(OR.sup.2).sub.3wherein X contains an aliphatic double bond or an epoxide group.

Abstract: Method for the production of a thermostable crosslinked PVC copolymer where the crosslinking is carried out in the presence of humidity and after processing of the polymer. The copolymer is a copolymer of vinyl chloride and 0.05-10 weight % of a vinyl containing alkoxysilane compound. Preferably methacryloxy-propyltrimethoxy-silane or methacryloxy-propyltriethoxysilane is used as comonomer. The crosslinking can be carried out independent of the type of stabilizer. A condensation catalyst and also an inhibitor can be used to prevent too early crosslinking.

Abstract: A processable blend having high temperature and thermal shock resistance properties includes a resin blend which includes at least one first silicone polymer and at least one second silicone polymer. The processable blend is ceramitizable at a temperature above about 1100.degree. F. A method of producing an article with high temperature and thermal shock resistance properties includes forming a silicone blend of at least one first silicone polymer and at least one second silicone polymer, wherein the blend is ceramitizable at a temperature above about 1100.degree. F.; forming the blend into the shape of the desired article; and, at least partially curing at least one of said silicone polymers at a temperature below the ceramitization temperature.

Abstract: The introduction of release coating-forming silicone compositions that yield cured release coatings that exhibit excellent release properties against tacky substances and do not impair the residual adhesion of tacky substances.Silicone composition for the formation of cured release coatings, that characteristically comprises(A) 100 weight parts of a cured coating-forming silicone composition into which there is admixed(B) 0.5 to 500 weight parts organosilicon polymer with the following average unit formula ##STR1## wherein R represents C.sub.1 to C.sub.10 monovalent hydrocarbon groups that are free of aliphatic unsaturation; R.sup.1 represents organic groups selected from the group consisting essentially of C.sub.2 to C.sub.20 alkylene groups and organic groups with the formulas --R.sup.3 (OR.sup.3).sub.y -- and --R.sup.3 --(R.sub.2 SiO).sub.z R.sub.2 Si--R.sup.3 -- (R is defined as above, R.sup.3 denotes C.sub.2 to C.sub.