Abstract: Titanium silicate is used as the filler for dental restorative composites, especially dental restoratives cements, in combination with a conventional liquid polymerizable binder system, especially BIS-GMA combined with one or more dimethacrylates. The composite compositions possess improved mechanical properties, especially compressive strength, as well as a low coefficient of thermal expansion.

Abstract: Low abrasion, heat resistant, high strength friction material with a high resistance to wear is described as containing phenolic resin, an organic modifier, processed mineral fibers and a filler. Rubber, either natural or synthetic, graphite, a metallic oxide, a color pigment, and factice may also be present. The material finds particular use in friction materials for brake blocks, drum brake linings and disc pads for vehicle braking systems and the like.

Abstract: A method for improving the impact strength of fiber reinforced plastic materials hard at ambient temperatures is described, the improvement comprising introducing particulate metal in the form of deformable particles of about 2-20 .mu.m thickness and having a length of about 10-20 times the thickness, the metal particles constituting about 10 to 80% and preferably about 20 to 50% by weight of the composition, and said particles being in contact with each other, and the composition containing a fiberglass mat of about 300 g/m.sup.2, whereby the impact resistance of the composition is rendered many times greater than the additive impact resistance imparted by either the reinforcing fibers or deformable metal particles alone.

Abstract: A method for manufacturing foundry sand cores and molds, which comprises preforming a foundry sand mixture comprising sand, a vinyl acetate resin and an organic solvent for said resin and optionally a resin selected from the group consisting of aromatic thermoplastic resins and aromatic thermosetting resins, and thereafter removing said solvent from the preformed foundry sand mixture by evaporation.

Abstract: Fiber-reinforced polyethylene terephthalate molding compositions containing(A) about 20 to about 80% by weight of polyethylene terephthalate;(B) about 5 to about 50% by weight of a reinforcing fiber; and(C) about 6 to about 60% by weight of a copolyether-ester consisting essentially of(a) long-chain ester units having the formula: ##STR1## wherein G is the divalent radical remaining after removal of the terminal hydroxyl groups from a poly(alkylene oxide) glycol having a number-average molecular weight of about 400 to about 6000; and R is the divalent radical remaining after removal of the carboxyl groups from a dicarboxylic acid; and(b) short-chain ester units having the formula: ##STR2## wherein D is the divalent radical remaining after removal of the hydroxyl groups from a low molecular weight diol having a molecular weight of less than about 250; and R is as defined above;with the proviso that the short-chain ester units constitute about 40 to about 90% by weight of the polyether-ester, and the long-chain

Abstract: A method for clear-coloring of linear aromatic polyesters, which comprises mixing at least one pigment selected from the group consisting of a pigment of the formula ##STR1## and pigments of the formula ##STR2## wherein X.sub.1 and X.sub.2 represent a hydrogen atom, a chlorine atom or a methyl group, and X.sub.3 represents a chlorine atom or a methyl group, with a linear aromatic polyester, and heating the mixture to the melting temperature of the polyester to dissolve or substantially dissolve the pigment in the polyester.

Abstract: A composition comprising a poly(phenylene sulfide) resin powder and an aluminum oxide powder of colloidal size. The composition is useful as a powder coating composition. The composition exhibits improved adhesion to a substrate, even in hot water.

Abstract: An improved process for dispersing inorganic fillers, such as alumina trihydrate, in a polyester resin is disclosed wherein the improvement comprises significantly lowering the viscosity of the polyester-filler dispersion by coating the filler with 0.05 to 1.0 percent, based on the weight of the filler, of a polar phosphate ester surfactant containing acid groups and polar ether groups, prior to adding the filler to the polyester resin.

Abstract: A combined friction modifier and reinforcing agent and friction materials containing it are disclosed in which the combined modifier and reinforcing agent comprises a substantially amorphous, unstable, finely divided glass convertible in response to heat generated by the friction material during use to a devitrified, crystallized, friable state which separates from the amorphous, unstable glass in a substantially non-smearing particulate form.

Abstract: This invention is concerned with a novel rubber processing aid, as well as with the use of that aid for improving the processing of rubber. More specifically, the present invention is concerned with the formation of an amine salt of an aralkylsulfonic acid through the deposition of an amine and an aralkylsulfonic acid on a natural or synthetic clay base. This invention is further concerned with the use of said aralkylsulfonic salt composition, optionally modified with additives such as a thioether or a long chain fatty acid, for improving the processing of natural and synthetic rubber.

Abstract: A coating and adhesive composition that may be in finely divided powder form is provided comprising a solid phenolic resole (one-step) resin having a gel time of between 150 seconds to about 250 seconds at 150.degree. C., said resin being the reaction product of bisphenol-A and formaldehyde at a mole ratio between about 2.11 to 2.64 moles of formaldehyde per mole of bisphenol-A in the presence of a catalytic quantity of a condensation catalyst at a temperature of at least about 70.degree. C. that is acidified to a pH from about 3 up to 7 and dehydrated.

Abstract: An adhesive composition is provided for the hard tissues of the human body which comprises (1) a radical-polymerizable monomer and a curing system comprising (2) a peroxide, (3) an amine (or its salt) and (4) a salt of a sulfinic acid. The composition is available in two independent packages, one of which contains (1) and (2) the other package (3) and (4). Alternatively, one package contains (1) and (3) the other package (2) and (4).

Abstract: A filler for an .alpha.-cyanoacrylate dental material comprising a silica powder coated with at least one solid catalyst having a weak catalytic activity to the .alpha.-cyanoacrylate. Solid catalysts include amino acids and acid-amide compounds. The dental material is prepared by mixing an .alpha.-cyanoacrylate with the filler. The mixture is applied to the tooth and a setter composition comprising a basic amine compound having a strong catalytic activity to the .alpha.-cyanoacrylate is applied to cure the dental material.

Abstract: High impact and solvent resistant composition comprising (A) about 25 to 95 percent by weight of an aromatic polyester, (B) about 1 to 8 percent by weight of an aromatic polycarbonate, and (C) and balance to make 100% of a coreshell polymer having a butadiene-based core. Preferably the composition also includes about 1 to 150 parts by weight of glass fiber reinforcement per 100 parts of (A), (B), and (C).

Abstract: Free flowing, finely divided precipitated silicic acid granules of reduced dust content and reduced abrasion are obtained by a process including the step of subjecting a silicic acid suspension to intensive shearing action. Rubber compositions containing the precipitated silica produced in this way are also disclosed.

Abstract: Phenolic resin-polyisocyanate binder systems comprising aqueous emulsions of a phenolic resin and a liquid polyisocyanate and a tertiary amine or metal ion curing agent can be made and used free of organic solvents, thereby providing improved environmental conditions. These binders are useful as foundry core and mold binders in both cold box and no bake operations.

Abstract: A friction material composition is described which is suitable for a wide variety of railroad brake services, particularly AAR (Association of American Railroads) service. In other embodiments the composition may also be used for heavy duty service, such as on locomotives, or as a disc brake material. The composition comprises, in percent by volume:______________________________________ organic component 30-60% steel fibers 1-12% carbonaceous component 5-30% inorganic fillers 5-35% additives 1-7% ______________________________________The composition may also contain up to 15 volume percent of friction modifiers an/or up to 20 volume percent of cashew nut shell resin particles. In addition, it contains no lead metal or lead compounds and no asbestos fiber.

Abstract: The invention includes formulated dental filling materials comprising a polymerizable organic plastics material containing inorganic fillers, which filling material comprises at least two pastes in intimate admixture with one another in a paste/paste system in which hardening is initiated by means of a peroxidic initiator and an accelerator, wherein said at least two pastes contain different inorganic fillers with different chemical constitutions such that one of said at least two pastes contains filler with a substantially higher proportion of elements with high atomic number than does the other of said at least two pastes. Also included in the invention is a dental filling pack containing said formulated dental filling materials as well as a method for their use.

Abstract: Self-extinguishing optionally reinforced polyamide moulding compositions containing as flameproofing combination or phenol/aldehyde resin and phosphoryl nitride oxide or a precursor thereof.

Abstract: Use of anthraquinone derivatives of the formula ##STR1## wherein X is --NH-- or --S--, one Y is --NHCOR, R being an alkyl, aryl or heterocyclic residue, the other Y are hydrogen, Z is halogen, and n is 0, 1, 2 or 3, whereby Z may be 1 to 3 halogen bound to aryl and/or anthraquinone nucleus and/or the residue R, for dyeing polyesters in the melt.