Abstract: Chrome-free aqueous sizing composition for glass fiber gun roving contains a mixture of emulsified film-forming polymers, titanium acetyl acetonate, silylated polyazamide, cationic lubricant and methacryloxypropylsilane.

Abstract: A migration-free size for glass fibers which includes a silane coupler, lubricant and film former and is characterized by the absence of a carrier, either aqueous or organic. To provide required shelf-life, a volatile agent such as acetone is added in limited amount to block coupler-film former reaction pending use of the size.

Abstract: Rigid shaped articles of expanded inorganic aggregate, such as expanded perlite, bonded with calcium silicate hydrate and preferably reinforced with fibers, are made by mixing a hydrothermally reacted gel of calcium silicate hydrate crystals with the expanded aggregate, shaping and drying, without treatment with saturated steam after the gel and aggregate have been mixed.

Abstract: An aqueous emulsion of epoxy resin or epoxy resin solution and mineral oil can be formed using a low level of predominantly non-ionic surfactant and an anti-static agent.

Abstract: Rigid cellular hydrous calcium silicate thermal insulating product of low density can be made by aerating an aqueous slurry containing reactive calcareous and siliceous materials, preferably in conjunction with the incorporation of a foaming agent in the slurry, and then indurating the aerated slurry by the application of heat and pressure.

Abstract: A mat of randomly disposed multifilament glass strand of indefinite length bonded to each other within a binder consisting essentially of the dried residue of an aqueous dispersion of emulsified polyurethane or epoxy resin having an average particle diameter of at least about 0.6 .mu.m and an amine-functional organosilane, where the individual filaments are sized with a mixture of an amine-functional organosilane and an amide reaction product of a fatty acid with an aliphatic polyamine, the reaction product having residual amine functionality, gives improved impact strength when used to reinforce thermoplastic, and especially polyamide, laminates which are stamped to form shaped articles.

Abstract: Polytetrafluoroethylene fluorocarbon resin dispersion-containing coatings for glass fibers are disclosed. In one embodiment, the polytetrafluoroethylene fluorocarbon resin dispersion-containing composition also comprises a lubricant and is suitable for use as a padding composition for glass fiber fabric. In another embodiment, the polytetrafluoroethylene fluorocarbon resin dispersion-containing composition also comprises a film-forming polymer, a thixotropic gelling agent, a silane coupling agent and, optionally, a lubricant and is suitable for use as a size composition for glass fibers.

Abstract: An improved aqueous composition for impregnating multifilament glass strand comprises emulsified polybutadiene homopolymer, butadiene-styrene-vinylpyridine terpolymer, resorcinol-formaldehyde resin, emulsified wax, a thickening agent and a defoaming agent with the homopolymer and the terpolymer emulsified with a synthetic anionic surfactant having sulfate, sulfonate or sulfosuccinate groups.

Abstract: This invention is addressed to an improved size composition for use in the treatment of glass fibers in the manufacture of glass fiber textiles, glass fiber reinforced plastics, and glass fiber reinforced elastomeric products wherein the size is formulated to contain, as the essential ingredients, a polybutadiene graft copolymer and a glass fiber anchoring agent. Bundles of glass fibers sized with the composition of the invention are particularly well suited for impregnation with an elastomer compatible material containing a resorcinol-aldehyde resin component and an elastomer component for use in the manufacture of glass fiber reinforced elastomeric products.

Abstract: A size composition for glass fibers, and glass fibers coated therewith, is disclosed. The size comprises an unsaturated, water-emulsifiable polyester resin, an ethylene-vinyl acetate copolymer emulsion and a polyvinyl acetate-organo silane copolymer, the size being suitable for application to fiberglass roving employed to reinforce sheet and bulk molding compounds.

Abstract: Failure of free radical catalyzed unsaturated polyester laminating compositions containing wax for suppression of styrene evaporation, but not more than about 10 weight percent of non-reinforcing filler, to develop interlaminar adhesion as great as similar compositions without wax can be at least partially overcome by incorporating at least about 0.1 weight percent of a tertiary monoamine having a single aromatic group and two alkyl or hydroxyalkyl groups on the amino nitrogen.

Abstract: Disclosed is a coloring agent-containing coating composition comprising a film-forming latex polymer, an epoxy-functional silane, an acid-functional latex polymer, a mercapto-functional silane, and a cationic dye. Such coating compositions are particularly suited for coating onto glass fibers.

Abstract: A curable coating composition comprising a polysiloxane resin having at least two silanol groups or groups readily hydrolyzable thereto, a non-resinous silane reactable with at least two such groups for curing the polysiloxane resin and a catalyst can be stablilized against gelation by emulsifying the polysiloxane resin with a nonionic or anionic surfactant and emulsifying the catalyst with a polycarbinolpolysiloxane substantially free of silanol groups and groups readily hydrolyzable thereto, the non-resinous silane curing agent being coemulsified together with either or both of the other components. This composition is particularly useful as a coating for glass fibers to be used in elevated temperature environments.

Abstract: A polyester resin composition is disclosed. The composition consists essentially of a blend of a diethylene glycol:neopentyl glycol:maleic:isophthalic acid polyester and a propylene glycol:isophthalic acid:maleic polyester, together with a copolymerizable monomer in an amount sufficient for reaction with the polyester blend to produce a thermoset article. In a preferred disclosed composition, the blend is composed from about 5 to 15 percent by weight of the diethylene glycol polyester and from about 95 to 85 percent of the propylene glycol polyester, together with from 35 to 45 percent by weight of styrene as a copolymerizable monomer, based upon the weight of the polyester blend and styrene.

Abstract: The present invention relates to the method of producing an interface that intimately bonds to common molding compounds; even though they contain mold release agents. The method utilizes a material at the surface of the molded part that bonds to the surface of the part but not to the steel mold. This not only permits the molding of an article using common industry techniques but more importantly the subsequent postmolding of a pigmented or protective resinous coating on one surface of a molded article. The method eliminates the need for special surface preparation such as sand blasting, scuff sanding, etc., to facilitate bonding of a secondary coating.

Abstract: A non-discoloring glass strand size comprises a thermoplastic polyurethane emulsion produced by the chain extension of an NCO-terminated prepolymer, which prepolymer is prepared by the reaction of an aliphatic or cycloaliphatic diisocyanate with a polyalkylene ether polyol and is particularly suitable for glass incorporated in polyamide resins.

Abstract: An aqueous binder composition suitable for bonding glass fibers in a porous random mat comprises a phenol-formaldehyde-urea condensate, starch, an emulsified thermoplastic resin, dimer acid, an emulsified oil and, optionally, an organosilane coupling agent. Such bonded mats are useful for impregnation or lamination with asphalt or resin compositions.

Abstract: Composite sheets of low pressure molding compounds sandwiched between films of polyethylene are thickened to a viscosity at which the film can be stripped from the composite by the application of low temperatures to at least the surface of the sandwiched composite.

Abstract: A size composition for glass fibers is disclosed. The composition consists essentially of an aqueous dispersion of a polyvinyl alcohol, a water dispersible cationic epichlorohydrin polyamide copolymer and a flocculent polymer. The polyvinyl alcohol has a degree of hydrolysis ranging from 85 percent to 90 percent and a molecular weight such that a 4 percent by weight aqueous solution thereof has a viscosity of from 4 to 6 centipoises. The cationic epichlorohydrin polyamide copolymer is one wherein the polyamide can be based upon diethylene triamine. The flocculent polymer is a medium-high to high cationic polymer or copolymer having a quaternized amine function. The polymer or copolymer is of at least 40 percent by weight of a monomer having an acrylic function and an amine function where the acrylic function is acrylate or methacrylate, any co-monomer being an acrylamide.

Abstract: The water resulting from the filter press molding of slurries of hydrated lime and reactive silica in the manufacture of hydrous calcium silicate products is recycled to the process by treating it with carbon dioxide to precipitate dissolved calcium hydroxide, filtering, and returning the filtered water to the process step wherein the lime and silica are slurried in water.