Abstract: A surface treating composition for treating long glass fibers for use in making long fiber-reinforced resin composites and methods for preparation and use thereof are provided. The surface treating compositions comprise(i) a wetting agent in an amount ranging between about 3 and about 40 wt. %, said wetting agent having a formula: ##STR1## wherein A=4-12; B=2-10; n=2-6; m=20-40; and R=CH.sub.3 or C.sub.2 H.sub.5 ; and a thermoplastic resin in an amount ranging between about 1 and about 40 wt. %, said thermoplastic resin is selected from the group consisting of polyamide polymers, polyamide copolymers, polyalkylcarbonate polymers, polyalkylcarbonate copolymers, and mixtures thereof. Reinforced thermoplastic composites having the treated glass fiber have excellent mechanical and uniform fiber dispersibility properties.

Abstract: Disclosed is a composite composition obtained by polymerizing a radical-polymerizable vinyl compound (A) in the presence of a silica polycondensate (B) formed by hydrolysis and polycondensation of at least one alkoxysilane compound in a dispersion system of colloidal silica. This composite composition has high transparency, rigidity, toughness and thermal resistance and is hence useful in applications where inorganic glass has heretofore been used.

Abstract: A rubber composition in which highly hard particles formed with a rubber-philic coating layer by a fluidized coating treatment are dispersed in a rubber material.

Abstract: A water-in-oil type emulsified solid composition containing (a) an oil component such as a silicone oil, (b) a solid wax and/or an oil-gelling agent, (c) water, and (d) (i) a polyoxyalkylene modified organopolysiloxane or (ii) a lipophilic surfactant and a hydrophobically treated powder, wherein the water content is 5% by weight or more, based upon the total amount of the composition.

Abstract: Compositions comprising(a) a liquid epoxy resin,(b) a filler containing at least 50% by weight of quartz flour,(c) a polyether polyol, and(d) an organically modified sheet silicate,show a constant viscosity under thermal and mechanical stress and are suitable for applications in vacuum casting technology, especially as encapsulating material for electrical and electronic components.

Abstract: A synthetic resin-coated metal pigment such as aluminum pigment has a silne coating covalently bonded to the surface of the pigment particles, and a three-dimensionally cross-linked synthetic resin coating covalently bonded to the siloxane coating. Production of the coated pigment comprises production of a silicon-organic coating on the pigment surface and then conversion of that coating into a siloxane coating by hydrolysis and condensation, followed by reaction with a low-molecular compound for forming the cross-linked synthetic resin coating. A range of uses of the coated pigment is also set forth.

Abstract: An organic phosphite composition is provided comprising organic phosphite particles having organic phosphite cores coated with an organic hydrogen polysiloxane. The phosphite particles exhibit high levels of resistance to hydrolysis and are useful as antioxidant additives for thermoplastic compositions.

Abstract: A coating composition that can be applied to optical plastic moldings having a high refractive index, to protect them from deterioration by light without any adverse effect on their optical functions. The coating composition contains the following essential constituents.(A) 1 part of a hydrolyzate of a silane compound;(B) 0.2-5 parts of titanium oxide-based composite fine particles having a particle diameter of 1-100 nm in which titanium oxide integrally combines with iron oxide, with the ratio of iron oxide to titanium oxide being 0.005-0.15 by weight;(C) 0.02-0.5 part of an unsaturated or saturated polycarboxylic acid or an anhydride thereof; and(D) 0.01-0.2 part of a heat-curing catalyst.

Abstract: A packing material for sealing electronic devices having improved, higher thermal conductivity than amorphous silica-containing packing material. The packing material comprises a thermosetting resin and a filler particle comprising a core inorganic particle and an amorphous silica coating on the core particle. The core particle is made from material having a thermal conductivity higher than that of amorphous silica, for example, a metal nitride such as aluminum nitride or silicon nitride, or a metal oxide such as aluminum oxide, or crystalline silicon dioxide. The amorphous silica coating may be formed by hydrolysis of alkoxysilane.

Abstract: A room temperature vulcanizable organopolysiloxane composition comprises (A) a diorganopolysiloxane which is blocked with an alkoxy group at both ends of a molecular chain thereof, (B) a tri or tetraalkoxysilane, (C) a titanium curing catalyst, (D) a silica filler, and (E) an alkoxysilane which is less hydrolyzable than the alkoxysilane of (B). The composition yields a cured product having high strength and high elongation and is low in viscosity and extrusion rate. A method for preparing the composition is also provided in which the ingredients (A) to (D) are first mixed together, to which the ingredient (E) is added.

Abstract: The present invention is directed to a composite resin system comprised of thermoplastic and thermoset resins wherein the phase morphology is cocontinuous. To this composite resin system are added particulate toughening agents which improve the toughness.

Abstract: Aqueous size compositions for glass fibers including a film former, coupling agent and crystalline pentaerythritol, which are particularly suitable glass fiber reinforcements for filament winding and pultrusion.

Abstract: A cushion or trackbed material for use in a riding-ground is obtained by coating sand with a carboxyl-containing olefin polymer and an oxygen-containing wax.

Abstract: The present invention is characterized by adding and mixing an organosilicon compound having alkoxy, groups and an ester linkage in the molecule represented by the following formula: ##STR1## in an amount of 1 to 20 parts by weight per 100 parts by weight of a trifluoropropylalkylpolysiloxane. Said organosilicon compound has a function as a storage stabilizer as well as a curing agent and, according to the present invention, an RTV fluorosilicone composition that has hitherto been difficult to be applied as an adhesive for electric and electronic parts has been made possible to be used in the particular field.

Abstract: Improved hardenable resin compositions useful in forming hard permeable masses in remote locations or zones are provided. The compositions include hardening agents which are non-hazardous to personnel and which are compatible with other components of the compositions. Methods of continuously forming and suspending particulate material coated with the improved resin compositions in gelled aqueous carrier liquid are also provided.

Abstract: A treatment for finely divided silica reinforcing fillers is provided which comprises heating the silica filler in the presence of a fluoroalkyl-functional diorganopolysiloxane. The treated fillers are especially compatible with fluorosilicone gums, and fluorosilicone rubbers made using said fillers exhibit improved mechanical properties, especially tear strength and compression set.

Abstract: A thermoplastic resin containing a graft copolymer obtained by graft-copolymerizing at least one vinyl monomer onto colloidal silica-core silicone-shell particles, and a process for producing the thermoplastic resin.A colloidal silica-core silicone-shell particles comprising(A) from 99.9 to 5% by weight of cores which are colloidal silica particles, and(B) from 0.1 to 95% by weight of shells comprising an organosiloxy group represented by the formula ##STR1## wherein R.sup.1 which may be the same or different each represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, Q represents hydrogen atom or an alkyl group having 1 to 6 carbon atoms, p is an integer of 1 to 3, and q is an integer of 0 to 2, with proviso that (p+q) is an integer of 1 to 3, and/or a polyorganosiloxane represented by the average composition formula ##EQU1## wherein R.sup.

Abstract: In a component such as a built-in sink, a washhand basin or the like, having a visible side and a rear side and consisting of a compound made of a resin which forms a matrix and of a filler comprised, at least predominantly, of quartz particles, in order to improve the wearing quality, the majority of the quartz particles have a size of between 0.1 mm and 2 mm, the filler constitutes about 60% to 80% by weight of the compound, the quartz particles have an unbroken grain shape and in the areas of the component subject to severe stress during use are packed more densely than those on the rear side of the component. To manufacture such a component, a mold is placed, for curing of the resin, in a position in which the visible side of the areas of the component subject to severe stress during use faces downwards.

Abstract: A powder coating composition is disclosed which includes a particulate material containing an epoxy resin and a curing agent, and fine powder of a charge controlling agent such as an acrylic resin, silica or a mixture thereof. The charge controlling agent is deposited on surfaces of the particles of the particulate material. Additionally, a powder coating composition is disclosed in which two different charge controlling agents are used and are separately deposited on different particles of epoxy resin consisting particulate material.

Abstract: Thermal spray powders are characterized by the presence of a matrix-forming component, a solid lubricant component and a plastic component. Abradable coatings formed by thermal spraying the powders abrade readily to form abradable seals. The abradable coatings have a metal, metal alloy, or ceramic matrix with discrete inclusions of solid lubricant and plastic. The thermal spray powders may be prepared as mechanically fused agglomerates.

Abstract: Novel silicone acrylate polymers and a method for their preparation is disclosed. These polymers are formed from silicone acrylates, silicone diacrylates, or mixtures with organic acrylates. The copolymer formed from the reaction mixture of silicone acrylates and organic acrylates is useful in enhancing glass reinforced polyesters.

Abstract: A rubber composition which contains, in a matrix consisting mainly of rubber, irregularly shaped particles having high hardness, and subjected to surface treatment for improving their affinity for the matrix, or their adhesion to it.

Abstract: A sizing agent for carbon fibers and glass fibers is based on an aqueous dispersion containing an epoxy resin and from 5 to 40% by weight, based on the epoxy resin, of a nonionic emulsifier containing teritary amino groups and/or ether linkages and at least one functional radical capable of reaction with the epoxy resin, preferably a glycidyl radical, and also at least one emulsifying radical which preferably carries a polyethylene glycol group in the terminal position.

Abstract: The invention relates to mixtures of polyarylene sulphides, maleimides, glass fibres and if appropriate other additives. The mixtures are distinguished by good mechanical properties.

Abstract: A process is disclosed whereby silica filler may be surface treated in situ following addition to a curable polysiloxane gum.

Abstract: Polymeric-containing compositions having improved oxidative stability have the polymer and at least two stabilizing agents. These agents are selected from low temperature antioxidants such as alkali metal and alkaline earth metal hypo or hydrogen phosphites, high temperature antioxidants such as: alkali metal or alkaline earth metal phenylphosphonates, thioethers like dialkyl thioalkylionate and polymers thereof and metal deactivating agents like polydentate ligands and ethylene diamine-tetracidic acid compounds. The composition can be a coating composition for substrates including those like fibrous material including fibers, bundles of fibers, strands, roving, flakes and beads. The composition can be present as a dried residue on the substrate. For fibrous substrates, the composition also has at least one organofunctional silane coupling agent, may also have processing aids such as epoxy polyester polymers and/or lubricants.

Abstract: A two-stage method for the surface modification of natural or synthetic, oxide or silicate fillers using organosilicon compounds of the formulas:[R.sub.n.sup.1 (RO).sub.3-n Si--(Alk).sub.m --(Ar).sub.p ]2 [S] xor[R.sub.n.sup.1 (RO).sub.3-n Si--(Alk).sub.m --(Ar).sub.p SCNin which filler and compound are intensively mixed without the addition of further solvents and the homogenized mixture is subjected in a preheated mixer to the hydrophobing reaction.

Abstract: A moisture-curing hot-melt composition comprising at least one isocyanate-terminated polyurethane prepolymer has improved sag-resistance while retaining high extrudability and is characterised in that the composition includes 1-17 wt %, preferably 3-6 wt %, of hydrophobic, siloxane-coated, fumed silica.Especially effective polyurethane hot-melt adhesive compositions are prepared containing 4-5 wt % of the hydrophobic, siloxane-coated fumed silica.

Abstract: A method of producing a conductive silicone rubber particulate is disclosed in which the particulate is from 0.1 to 100 micrometers average diameter and is coated on the surface with carbon black. The method prepares an aqueous dispersion of silicone rubber composition particulate, carbon black, surfactant, and water, then removes the water.

Abstract: Polyester compositions exhibiting decreased distortion (warpage), improved processability and productivity are produced by melt-blending a thermoplastic polyester resin with between 3 to 65% by weight of a fibrous reinforcement medium, and between 3 to 65% by weight of binder-agglomerated glass granules.

Abstract: This invention relates to a molding material composed of a liquid thermosetting resin composition containing styrene monomer as a cross-linking component thereof and chopped glass fiber strands which can give a large molded product having high impact strength in high productivity and a method for manufacture thereof characterized by using glass fiber strands such that the number of glass filaments used in the glass fiber strands falls in the range of 600 to 1,400 per strand, the amount of a binder deposited on the glass fibers is not less than 1.0% by weight, and the percentage of styrene monomer insoluble binder falls in the range of 40 to 90% by weight.

Abstract: A coating composition for a particulate filler comprising an organic oligomer containing a plurality of oxy groups, less than 15% of which are comprised in hydroxy groups, organic oligomer components thereof, fillers coated with the coating compositions, organic polymer matrices filled with a dispersion of the coated filler, and processes for the preparation of the oligomer components, the coating compositions, the coated fillers and the filled matrices, and precursors of the coating compositions.

Abstract: A room temperature curing composition comprising:(A) a silanol-terminated polydiorganosiloxane;(B) a hydrolyzable silyl-terminated polymer obtained by reacting:(a) an epoxy-terminated polyether;(b)(i) an heterocyclic compound containing imino groups, and/or;(ii) an aromatic compound or a heterocyclic compound containing mercapto groups; and,(c) an organosilicon compound containing an epoxy group and a hydrolyzable group;(C) an inorganic filler; and,(D) a curing catalyst.

Abstract: There is disclosed a process for preparing an organic polymer composition which includes an inorganic filler, which comprises: (i) treating an inorganic filler by adding to a particulate white inorganic material a natural or synthetic latex composition which comprises a suspension of polymer particles in water wherein the latex solids are selected from the group consisting of acrylic copolymers and vinyl acetate copolymers, and dewatering and drying the resultant mixture, the amount of the natural or synthetic latex composition added being such as to provide from 1% to 10% by weight of latex solids based on the weight of dry inorganic material; and (ii) combining the treated inorganic filler with an organic polymer. Also disclosed is an organic polymeric composition comprising an organic polymer and an inorganic filler.

Abstract: An epoxy resin composition useful for sealing a semiconductor device includes 100 parts by weight of epoxy resin, 30-75 parts by weight of phenolic resin, 320-570 parts by weight of silica powder, and 2-30 parts by weight of styrene-butadiene-methyl methacrylate copolymer. The surface of the silica powder is treated, at room temperature, by 0.05-1.00% by weight of silane coupling agent, 0.05-1.00% by weight of a silicone base surface active agent, and 0.15-3.00% by weight of thermosetting silicone rubber.

Abstract: A curable organopolysiloxane composition, which is suitable for making a silicone rubber mold for mock-up molding with, for example, an epoxy resin, is prepared by the steps of (a) blending an organopolysiloxane having at least two silanol groups in a molecule, a finely divided silica filler having hydrophobic surface and hexamethyl disilazane to give a uniform mixture in a specified proportion; (b) subjecting the uniform mixture to a heat treatment; and (c) blending the heat-treated uniform mixture with an organosilane compound having at least three hydrolyzable groups in a molecule or a partial hydrolysis product thereof as a crosslinking agent. The composition has good flowability suitable for the preparation of a mold of any exquisite forms and the silicone rubber mold prepared from the composition exhibits good mold-releasability lastingly.

Abstract: In a heat curable silicone rubber composition comprising a polydiorganosiloxane base polymer and a curing catalyst, the improvement comprising an effective amount of co-curing agent. Preferably, the co-curing agent has the general formula ##STR1## where R is H or a C.sub.1-5 alkyl radical, R.sup.1 is a C.sub.1-5 alkylene radical, each R.sup.2 is independently selected from H and CH.sub.3, R.sup.3 is H or CH.sub.3, n equals 0 or 1, and m is an integer from 3 to 6, inclusive.

Abstract: Incorporation of 0.02-1.0 weight percent of epoxy containing compounds into glass reinforced polyacetal molding compositions resulting in improved anaerobic thermal stability of such compositions during processing.

Abstract: Non-agglomerating elastomeric organopolysiloxane particulates having a mean particle size ranging from 50 .mu.m to 3 mm, uniformly coated with silica powder on the face surfaces thereof and well adapted as a soft filler material for natural or synthetic polymers or as a controlled release dosage form, are produced by (a) forming an oil-in-water emulsion of silicone oils, silica powder, a platinum curing catalyst and, optionally, an active principle such as a medicament or an agrochemical, and then (b) breaking and polyaddition crosslinking such emulsion into the desired particles by heating it to a temperature ranging from 40.degree. to 100.degree. C.

Abstract: A process for preparing an inorganic filler comprises admixing a particulate inorganic material with a natural or synthetic latex composition and an aqueous suspension of fine carbon black, and dewatering and drying the resultant mixture, the amount of the natural or synthetic latex composition added being such as to provide a coating on the inorganic mineral of from 1% to 10% by weight of latex solids based on the weight of dry inorganic material.

Abstract: A glass fiber-reinforced composite material is produced by treating glass fibers with a silane composition comprising silane molecules having amine functional groups and silane molecules having ethylenically-unsaturated functional groups; admixing the treated glass fibers with a polyolefin resin, and a fiber bonding agent comprising a polymerizable unsaturated organic compound having at least two polymerizable unsaturation groups, a vinyl-polymerizable unsaturated, hydrolyzable silane, and a free radical generator, and exposing the resultant mixture to conditions of temperature and pressure sufficient to cause the formation of a glass fiber-reinforced composite material. The use of the silane composition promotes improved impact strength of the composite.

Abstract: A novel method is proposed for the preparation of a curable organopolysiloxane composition which is suitable as a material of a mold-making having excellent mechanical properties and durability in use for replica molding. The method comprises (a) blending a vinyl-containing organopolysiloxane with a hydrophobic reinforcing silica filler and hexamethyl disilazane, optionally, together with water each in a limited amount, (b) subjecting the blend to a heat treatment and (c) admixing the heat-treated blend with an organohydrogenpolysiloxane as a crosslinking agent of the vinyl-containing organopolysiloxane and a platinum compound as a catalyst for promoting the addition reaction between the silicon-bonded vinyl groups and the silicon-bonded hydrogen atoms.

Abstract: A high temperature PVC resin blend is made by blending from 60 to 85 parts PVC with no more than 40 parts of a ("alpha-SAN") copolymer of alpha-methyl styrene ("AMS"), styrene ("S") and acrylonitrile ("AN"), and less than 20 parts by wt additives including stabilizers, antioxidants, lubricants, and processing aids. In addition, an impact modifier may be added. The blend with particularly sized glass fibers, may be thermoformed at an elevated processing temperature and pressure, to provide a reinforced composite in which the PVC is covalently bonded to the glass fiber. The composite has a substantially higher HDT and equivalent tensile strength, compared to that of a similarly reinforced, unblended PVC composite, without sacrificing the novel composite's other desirable physical properties.

Abstract: A cohesive polymer comprising a matrix a matrix polymer and a coated particulate filler dispersed therein, characterized in that the matrix polymer is an acrylic polymer, and the filler is coated at least in part with a composition comprising an organic coating polymer of number average molecular weight of up to 300,000, which contains an acidic group (or precursor thereof) and an unsaturated group optionally linked to the matrix acrylic polymer, and a process for its production, and precursors thereof for use in the process.

Abstract: Polyester resins modified with a glass fiber reinforcing agent treated with novel sizing agents exhibit marked by improved physical strength properties.

Abstract: A granular polymer composition having increased water absorption and desorption capability, resistance to photogradation and increased life span, comprising a water-insoluble but swellable cross-linked polymer material formed of at least one polymer and/or copolymer prepared from at least one unsaturated ethylene monomer having at least one carboxylic, amide, sulfuric, sulfonic, phosphoric, phosphonic, or hydroxyl functional group and at least one powdered mineral charge well dispersed in and intimately bonded to said polymer as a result of its introduction into the mixture of monomers of the same type or of a different type before their polymerization into said polymer or copolymer.

Abstract: A low stress agent which increases the coherence of organic materials and an inorganic filler, decreases the modulus in molded articles which absorb stress and impact energy is prepared by a process which comprises preparing a silane-modified reactive liquid polymer from a silane coupling agent and a reactive liquid polymer containing functional groups or double bonds, treating the surface of an inorganic filler with a silane coupling agent, and reacting said silane modified reactive liquid polymer with said treated inorganic filler. An epoxy resin or phenol resin composition which contains the low stress agent is very suitable for use in encapsulating a semiconductor.

Abstract: Composite articles comprising a matrix material and reinforcing fibres coated individually or in tows with a support layer and methods of making the same are disclosed. The support layer is capable of supporting the fibres and preventing kinking thereof when the article is deformed while the matrix material is relatively soft. Polymeric matrix and support layer materials, either thermoplastic or thermosetting, are disclosed. When the support layer comprises a thermoplastic material, it should be selected to have a softening temperature which is higher than any temperature to which the article is heated for deformation. If matrix material and support layer are thermoplastic, the materials should be selected so that the softening point of the support layer is at least 10.degree. C. higher than that of the matrix, especially at least 30.degree. C. higher. According to the disclosure, the fibres are arranged so as to deform in a trellis deformation when the article is deformed.

Abstract: A mineral particulate is disclosed selected from the group consisting of metal carbonates, glass fibers and layered lattice silicates, comprising particles of said mineral, the surface of which have been modified by a polymer synthesized in situ in the presence of a reactive gas selected from the group consisting of hydrogen, carbon monoxide and carbon dioxide; said particulate having a predetermined particle size distribution which substantially corresponds to the particle size distribution of the surface-unmodified feed particulate from which the product particulate is produced.

Abstract: Finely divided water insoluble solid particles free of ionic charges and ranging in size from about 0.01 to several hundred microns or higher, including but not limited to paint pigment particles, are given a generally uniform polymeric encapsulation by admixing such particles in an aqueous reaction medium with a water insoluble monomer polymerizable to form a generally water insoluble polymer free of ionic charges in the presence of a nonionic surface active stabilizing agent, preferably a polyethoxylated alkyl phenol containing at least about eight carbon atoms in the alkyl group thereof and preferably at least about 40-50 ethylene oxide groups per molecule, and polymerization of the monomer is then initiated, usually with heating, with a redox polymerization initiating system which is free of ionic groups and does not decompose to release ionic groups in the reaction medium.