Abstract: Incorporating fibrous filler into an elastomer by adding to a screw extruder an aqueous slurry of an organic fibrous filler having a length less than about 25 mm and an elastomer latex, e.g., polychloroprene latex. The latex and slurry are fed to the extruder and the latex is coagulated in the extruder. The coagulated latex containing fibrous filler is fed to a dewatering zone. The flow of coagulated elastomer is restricted so that water present in the coagulated elastomer is separated by means of a vent in the extruder upstream from the restriction and discharging and recovering the fiber-filled elastomer. The compound can be used for the manufacture of power transmission belts.

Abstract: A heat-resistant, high-impact polystyrene composition is disclosed, comprising:(A) 100 parts by weight of high-impact polystyrene,(B) from 1.5 to 5 parts by weight of glass fibers,(C) from 2.5 to 10 parts by weight of a styrene-butadiene-styrene copolymer, and(D) from 0.05 to 5 parts by weight of a metal salt of a higher fatty acid,the high-impact polystyrene (A) having a polybutadiene content of from 4.5 to 8.0% by weight and an average rubber particle diameter of from 0.5 to 2.0 .mu.m and containing no plasticizer;the glass fibers (B) having an average fiber length of from 0.5 to 2 mm and an average aspect ratio of 20 or more and having undergone surface treatment with a silane coupling agent; andthe styrene-butadiene-styrene copolymer (C) having a butadiene unit content of from 40 to 80% by weight.

Abstract: A process for anionic polymerization of polymerizable monomers with an organo lithium initiator followed by polymerization termination characterized in that terminated reaction products are neutralized by contacting with sulfuric acid, phosphoric acid or a mixture thereof.

Abstract: A printing ink composition having a high degree of rub-off resistance comprising (a) a dispersion of a pigment in a vehicle containing a C.sub.7 -C.sub.40 oil and (b) a polymer latex emulsified in said dispersion. When employed for printing at high speeds, an anti-misting compound such as tridecyl acid phosphate, phosphoric acid, glycerol, or propylene carbonate is preferentially added to the ink composition. Where cost is not of paramount concern, a polytetrafluoroethylene wax is preferentially added to the ink composition.

Abstract: A rubber composition comprising 100 parts by weight of a rubber component which comprises at least 30% by weight of an emulsion polymerization rubber which is a conjugated diene polymer rubber or conjugated dienestyrene copolymer rubber obtained by emulsion polymerization, has a bound styrene content of 0-65% by weight, contains 20-35% by weight of a component having a molecular weight of not more than 150,000 as measured by a gel permeation chromatography and has a Mooney viscosity, ML.sub.1+4 (100.degree. C.), of 60-160 and a Mooney viscosity difference (.DELTA.MV) of -20 to +5 as defined by the following equation:.DELTA.MV=ML.sub.1+4 (100.degree. C.)-ML.sub.1+15 (100.degree. C.)and 45-200 parts by weight of carbon black. Said rubber composition is excellent in abrasion resistance, breaking strength and high histeresis property in uses in which carbon black or oil is blended at a high-filling rate.

Abstract: Rubber compositions are disclosed for integral attachment of polymeric and metallic materials. Improved bondability is attributed to the use of a selected base rubber blended with a selected class of inorganic or organic fillers, silane compounds and vulcanizing agents such that the finished composition is provided with a specified range of Mooney viscosities. Also disclosed is a method of hose-metal fitting connection by the application of the composition. Gas- and oil-impermeability characteristics are greatly enhanced.

Abstract: A process to produce a stable suspension of block copolymer particles in a water medium, and a stable suspension of block copolymer particles in a water medium is provided. The block copolymer is a polar functional group-containing vinyl aromatic/conjugated diolefin block copolymer which may optionally be hydrogenated. The use of C.sub.15 to C.sub.24 linear alkyl aromatic sulfonates has been found to be critical in preparation of these stable dispersions.

Abstract: A reinforcing agent for vulcanizable rubber compounds comprises an anhydrous metal salt of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid having a crystalline structure consisting essentially of plates and fibers. Vulcanizable rubber compounds containing such reinforcing agents have improved physical properties over rubber compounds containing conventional metal carboxylic acid salts. Methods for the preparation of such anhydrous metal salts and methods for the reinforcement of vulcanizable rubber compounds therewith are also provided.

Abstract: The present invention provides:(1) an ink composition erasable with a rubber eraser, the composition comprising 1 to 50% of a pigment, 3 to 50% of a resin having a film-forming temperature of 40.degree. C. or higher, 0.5 to 50% of an organic solvent and 7 to 60% of water, based on the weight of the ink composition;(2) an ink composition erasable with a rubber eraser, the composition comprising 2 to 90% of a pigment coated with a resin having a film-forming temperature of 40.degree. C. or higher, 0.5 to 30% of an organic solvent and 0.5 to 30% of water, based on the weight of the ink composition; and(3) an ink composition erasable with a rubber eraser, the composition comprising 2 to 90% of a pigment coated with a resin having a film-forming temperature of 40.degree. C. or higher, 1.5 to 55% of an emulsion (calculated as solids), 0.5 to 30% of an organic solvent and 4.0 to 60% of water, based on the weight of the ink composition.

Abstract: A process to produce a stable suspension of block copolymer particles in a water medium, and a stable suspension of block copolymer particles in a water medium is provided. The block copolymer is a polar functional group--containing vinyl aromatic/conjugated diolefin block copolymer which may optionally be hydrogenated. The use of C.sub.15 to C.sub.24 linear alkyl aromatic sulfonates has been found to be critical in preparation of these stable dispersions.

Abstract: The present invention relates to a mononitrone of the formula: ##STR1## The amount of alpha-(2,4-dihydroxy)phenyl N-phenyl nitrone which is used in the modification of a diene containing polymer may range from about 0.1 to about 30 percent by weight of said polymer. The modified polymers exhibit improved tear properties as measured by Strebler adhesion values.

Abstract: A non-toxic rubber-based composition for use in manufacturing toys which contains styrene butadiene rubber, naphthene oil, ester gum, calcium carbonate and a coloring agent, and a method for making same.

Abstract: In accordance with the invention there is a composition comprising a ABS or ABS type resin in admixture with a mold release effective amount of a fluid hydrogenated oligomer of an alpha-olefin.

Abstract: Organosilicon compounds of a novel class are disclosed including .alpha.,.omega.-bis(alkoxy silyl)-substituted alkane compounds represented by the general formula(RO).sub.m (CH.sub.3).sub.3-m Si--CH.sub.2).sub.n Si(CH.sub.3).sub.3-m (OR).sub.m,in which R is a monovalent hydrocarbon group having 1 to 4 carbon atoms, e.g., methyl and ethyl, the subscript n is a positive integer in the range from 10 to 18 and the subscript m is 1, 2 or 3. The compound is useful as an additive in various kinds of synthetic resin-based compositions for the purpose of improving the properties such as flexibility, weatherability, cold resistance and mechanical strengths.

Abstract: An adhesive composition comprising a polymer, a tackifier, and a plasticizing amount in the range of 5-40% by weight, 1,4-cyclohexane dimethanol dibenzoate.

Abstract: This invention relates to synthetic resin compositions comprising a mixed product of (a) a compound having at least one piperidyl group, (b) perchloric acid and (c) optionally an inorganic substance other than perchloric acid in an amount of 0.01-10 parts by weight based on a synthetic resin, for example, a halogen-containing resin.The compositions of this invention exhibit very excellent light resistance and heat resistance.

Abstract: A flame-resistant non-drying putty composition is prepared by adding 2 to 20 parts by weight of an unvulcanized solid rubber, 10 to 50 parts by weight of a plasticizer, 300 to 800 parts by weight of a metal hydrate, 20 to 200 parts by weight of a foliated talc, and 0.5 to 5 parts by weight of an organic fiber to 100 parts by weight of one type of liquid resin having a viscosity of 5,000 to 200,000 centipoise at room temperature or a mixture of two or more types thereof and kneading the resultant mixture.

Abstract: Rubber compositions are disclosed which exhibit enhanced dynamic modulus and tensile strength characteristics. A selected type of carbon black, resorcinsol and/or its precondensate and hexamethoxymethyl melamine are combined in specified amounts with a selected class of starting rubbers. The carbon black has specified nitrogen adsorption surface area, dibutyl phthalate adsorptivity and Dst mode of diameter.

Abstract: In the present invention, a polymer having a number average molecular weight (Mn) of from 200 to 40,000 and a glass transition point of from -75.degree. C. to +10.degree. C. which is obtained by the cationic polymerization of a branched alpha-olenin is used as a tackifier (a tacky producer) for a hot melt adhesive or a pressure-sensitive adhesive. An adhesive composition containing the polymer described above as a tackifier has excellent heat resistance, hue, weather resistance, and the like and has such excellent characteristics that its odor is weak.

Abstract: An autodepositing coating composition for coating metallic surfaces comprising resin, persulfate, and optionally, fluoride, and having a pH of at least about 6.

Abstract: Toluene sulfonate salts of 2-alkyl imidazolines, e.g., 2-undecyl-4,4,5,5-tetramethyl imidazoline, are described. These compounds may be used as internal or external antistatic agents for fibers, e.g., acrylic fibers, and synthetic polymers, e.g., polystyrene.

Abstract: Molded articles such as gaskets for container caps are made from a thermoplastic composition at high speed, for instance above 100 per minute, by continuously cutting a continuous supply of molten thermoplastic composition into molten pieces and transferring the molten pieces to a molding position at which they are molded into the gaskets or other desired articles, and the composition includes a melt-release material that continuously replenishes a melt-release layer on the surfaces by which the molten composition is cut and transferred to the molding position.

Abstract: Rubber compositions for tire treads well balanced in the performances of rolling registance, sliding coefficient of friction on wet road surfaces and wear resistance and which are superior in the processability and workability, including at least 20 parts by weight of styrene-butadiene random copolymer prepared by using an organic lithium as a polymerization catalyst and coupled with a mono- or difunctional tin compound as well as a tri- or more functional compound and having a tin content of 300 ppm or more which is bonded to the polymer and further include a carbon black having the value of N.sub.2 SA/IA of 1.1 or more.

Abstract: This invention relates to compositions for forming opaque, abrasion-removable masks on substrates. The compositions, which include a texture modifying amount of solid or hollow microspheres, have enabled depression or embossing of the surface of the printed substrates to be obscured so that they cannot be seen by the naked eye. The compositions can be based on plastisols, pigmented polymer solution, or pigmented aqueous emulsions. The invention further provides substrates, for example lottery tickets, having abrasion-removable masks formed from compositions of the invention.

Abstract: Process for producing pourable powdered rubber with filler content independent of particle size. By adjusting to a pH in the range of 3.7 to 6.5 after the mixing of rubber latices or aqueous emulsions of rubber solutions with filler suspensions containing precipitant, and by using 0.1 to 2.0 phr of a selected metal salt, powdered rubbers can be produced with filler content independent of particle size.

Abstract: Vinyl aromatic-conjugated diene copolymers having polymer chains which end with an alkali metal and which are obtained by the polymerization in solution of at least one vinyl aromatic hydrocarbon and of a conjugated diene in the presence of a catalyst based on an alkali metal are decolorized by treating the copolymer with a monocarboxylic acid of general formula(Y).sub.2-n --X--(R--COOH).sub.nin which X is S, S--CH.sub.2 --S, or S--S, and Y and R are alkyl radicals having 1 to 16 carbon atoms and n is 1 or 2.

Abstract: A non-toxic rubber-based composition for use in manufacturing toys which contains styrene butadiene rubber, naphthene oil, ester gum, calcium carbonate and a coloring agent, and a method for making same.

Abstract: A substantially nonthixotropic composition capable of minimizing the amount of airborne asbestos particles released during removal of asbestos from a structural unit and encapsulating the removed asbestos to permanently prevent the release of airborne asbestos particles. The composition includes (i) a major proportion of water, (ii) a nonionic-surfactant-stabilized latex, such as a latex of styrene butyl rubber, having a viscosity of less than about 300 cps and a maximum particle size of less than about 0.4 microns, (iii) sufficient nonionic surfactant to reduce the surface tension of the composition to less than about 40 dynes per cm, and (iv) a cationic surfactant. Optionally, the composition may further include a defoamant, a corrosion inhibitor, a pH buffering agent, a freezing point depressant and/or a dye.

Abstract: Rubber compositions are disclosed which are capable of exhibiting superior adhesion and high water resistance in bonding rubbers to brass and to organic fiber cords and also to different rubbers. Such bonding characteristics can be obtained by the use of specified amounts of a selected class of organic sulfur-containing compounds combined with sulfur-curable rubbers, silica, resorcin donors and methylene donors. Hoses are also disclosed which have these compositions applied as adhesive layers.

Abstract: The present invention relates to a rubber-like polybutadiene or a rubber-like butadiene-styrene copolymer suited for use in tire treads which are obtained by polymerization of the monomer(s) in the presence of an organolithium catalyst, followed by reacting a carbodiimide with the reactant product thereof so as to subject it to reaction at its living point, and if necessary, further reacting the product thus obtained with a trifunctional or higher-order coupling agent. The invention further relates to a process for the production thereof, and a rubber composition containing more than a definite amount of said polymer.

Abstract: Crosslinked organic resins, containing SiO.sub.2 and sulphonic acid groups, having an SiO.sub.2 content of 0.1-10% by weight, relative to the total weight of the SiO.sub.2 -containing resins, are prepared by steeping crosslinked organic resins, containing sulphonic acid groups, in the alkali form in aqueous alkali metal silicate solutions or (quaternary) alkylammonium silicate solutions, and subsequently precipitating the SiO.sub.2 using mineral acid, and simultaneously converting the resin into the H.sup.+ form. These resins can be used as acid catalysts in the cleavage of tert.-alkyl ethers into the basic tertiary olefins and the basic alkanols. This use has proven particularly advantageous when the tert.-alkyl alkyl ethers to be cleaved are employed together with water for the cleavage.

Abstract: A process for agglomerating synthetic rubber latexes to obtain rubber particles having large average particle sizes comprising the steps of mixing with a synthetic rubber latex having primary or secondary carboxyl groups at the particle surfaces of the latex, an inorganic potassium salt in a concentration in the latex of at least about 0.50 normal to agglomerate the particles, and separating the agglomerated rubber particles from the liquid of the latex.Separation of the agglomerated rubber particles may be accomplished by gravity or centrifugation when the potassium ion concentration in the latex is at least about 1.15 normal.

Abstract: Masonry structures are susceptible to cracking due to distortion caused by movement of their foundation, vibration, and/or drying out subsequent to the construction of the structure. Such cracking often occurs after the structure has been painted. This results in the crack being transmitted through the coating of paint. Upon repainting of the masonry structure new cracks often develop and are transmitted through the paint coating within a short period of time.This invention discloses a crack resistant coating for masonary structures comprising:(1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and(2) a conventional coating layer which is contiguous to and covers the crack absorbing layer.

Abstract: An ink jet printing substrate particularly useful as a coating for paper for multi-color, water base ink jet printing consisting essentially of a high swelling montmorillonite clay, and optionally including a high surface area pigment, such as a synthetic silica or calcium carbonate and a water-insoluble binder.

Abstract: A method for obtaining a vulcanizable rubber formulation of controlled uniform viscosity properties containing synthetic rubber comprises the steps of determining the Mooney viscosity, MV.sub.a, of the synthetic rubber from which the formulation is to be prepared; determining the relaxation time, T.sub.80, of the synthetic rubber from which the formulation is to be prepared; calculating from MV.sub.a and T.sub.80 the Mooney viscosity, MV.sub.b, of the compounded rubber formulation; selecting synthetic rubber having MV.sub.a and T.sub.80 values within a predetermined range of values calculated to produce a compounded rubber formulation, the MV.sub.b of which is within a desired, preselected uniform range; and, compounding the selected synthetic rubber with carbon black and other conventional rubber compounding agents to produce the rubber formulation of MV.sub.b within the predetermined range of values. A method is also provided for predicting the Mooney viscosity MV.sub.

Abstract: A solid flexible polymeric material is formed by solidifying a water-based latex which contains an inorganic filler. The filler is sand and this may be stabilized in the latex with xanthan gum. The solid material may be a foamed or non-foamed layer which may be used as integral carpet backing, as carpet underlay, or as an adhesive for bonding a reinforcing fabric to the back of carpeting.

Abstract: A process for the production of free-flowing rubber powders with silicic acid as filler comprises combining a rubber latex with silicic acid filler while stirring in the presence of specific auxiliary agents, adjusting the pH range of the mixture to cause coagulation, and separating and drying the resultant solids wherein the specific auxiliary agents comprise organic surfactants together with colloidal silicic acid.

Abstract: An aqueous autodepositing coating composition for coating metallic surfaces comprising resin, persulfate and, optionally, fluoride, which is effective in coating at a pH of about 4 to about 8.5.

Abstract: A process produces a free flowing, silicic-acid-filled, powdered elastomer wherein the silicic acid employed has the properties set out below:(a) SiO.sub.2 content: about 82-91.5% by weight;(b) metallic oxides: about 0.5-3% by weight;(c) loss on ignition (DIN 55 921/2--measured at 100.degree. C.): about 8-15% by weight;(d) moisture (DIN 53 198--measured at 105.degree. C.): about 2-10% by weight;(e) surface area of the primary particles according to BET: about 40-250 m.sup.2 /g;(f) dibutyl phthalate absorption (ASTM D 2414-79) based on measured weight: about 170-290%.(g) linear average of numerical distribution of secondary particles: about 10-2,000 nm;(h) linear average of volume distribution of secondary particles: about 3-30 um;(i) proportion of secondary particles with a diameter of less than 1 um: about 0.01-5% by weightwherein the percentages of parameters (a) to (c), added up together, must yield 100% by weight.

Abstract: A tire tread rubber composition exhibiting outstanding dynamic behavior and characterized in that the composition comprises as a rubber component at least 30 wt. % of an elastic styrene-butadiene copolymer prepared by solution polymerization with use of a lithium-base catalyst, the copolymer being higher than -60.degree. C. in glass transition temperature (T g) and at least 40.degree. C. in the peak mesial width of tan .delta. determined from the temperature range between the two points of intersection of the curve of tan .delta. with the line of tan .delta.=1/2a wherein a is the peak value of tan .delta. determined from a temperature-tan .delta. dispersion curve.

Abstract: A thin tough glossy surface may be applied to a flexible substrate in a one step process comprising: applying an aqueous thin film of a compound of a polymer to an endless carrier belt made of a material having a low adhesion to said polymer, contacting the flexible substrate and coated carrier belt and keeping them together while they pass around a hot drum laminator at a temperature of from about 100.degree. to about 150.degree. C.The process is suitable for applying impermeable surfaces to non wovens, and foam backed carpet.

Abstract: A solid flexible polymeric material is formed by solidifying a water-based latex which contains an inorganic filler. The filler is sand and this may be stabilized in the latex with xanthan gum. The solid material may be a formed or non-foamed layer which may be used as integral carpet backing, as carpet underlay, or as an adhesive for bonding a reinforcing fabric to the back of carpeting.

Abstract: Aqueous optical brightener compositions consisting essentially of:(a) at least one optical brightener of formula ##STR1## in which R.sub.1 is hydrogen or --SO.sub.3 M;R.sub.2 is hydrogen or --SO.sub.3 M;R.sub.3 is hydrogen, C.sub.2-3 -hydroxyalkyl, C.sub.1-4 -alkyl, --CH.sub.2 --CH.sub.2 --CN or --CH.sub.2 --CH.sub.2 --CONH.sub.2 ;R.sub.4 is hydrogen, C.sub.1-4 -alkyl, C.sub.2-3 -hydroxyalkyl, hydroxy-ethoxy-ethyl, N,N-Bis-(C.sub.1-3 -alkyl)-amino-C.sub.2-6 -alkyl or benzyl;orR.sub.3 and R.sub.4 together with the neighboring nitrogen atom signify a morpholine, pyrrolidine, piperidine or N-methylpiperazine ring;andM is hydrogen or a colorless cation; provided that at most one of R.sub.3 and R.sub.

Abstract: Disclosed are terpolymers having a Ring and Ball softening point of 69.degree. C. to 130.degree. C. prepared from a vinyl-substituted aromatic hydrocarbon, a monoterpene hydrocarbon and a phenol. The terpolymers are useful as tackifiers in adhesive compositions.

Abstract: Elastomer/filler interface agents for filled vulcanizable matrices, e.g., natural or synthetic rubber, comprise the amido reaction products of tetraethylene pentamine ("TEPA") with amide-forming organosulfur compounds.

Abstract: A promoter for improving the adhesion of rubber to metals is obtained by reacting an alkaline earth borate such as calcium borate with a cobalt or nickel carboxylate. Preferred carboxylates contain 3-24 carbon atoms.

Abstract: This invention relates to a novel rubber composition having improved green properties such as high green tensile strength and high green modulus and improved hysteresis loss and cut growth property, which comprises 100 parts by weight of a diene rubber, about 20 to about 00 parts by weight of a reinforcing filler, about 0.1 to about 3.0 parts by weight of a nitroso compound having the formula (I) ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, are selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, a hydroxyalkyl group having from 1 to 6 carbon atoms, a cycloalkyl group and an aryl group and about 0.1 to about 3.0 parts by weight of an halogenated organic compound having the formula (II) ##STR2## wherein R.sub.3 is selected from the group consisting of a hydrogen atom, a methyl group, a chlorine atom and a bromine atom and X is a chlorine atom or a bromine atom.

Abstract: The present invention is directed to a polyisocyanate preparation dispersible in water and having an average NCO functionality of about 2.0 to 3.5 which contains(a) an aliphatic polyisocyanate or a mixture of aliphatic polyisocyanates; and(b) a quantity of an emulsifier sufficient to ensure the dispersibility of the polyisocyanates.The present invention is also directed to the use of this polyisocyanate preparation as an additive for aqueous adhesives based on polymers dispersed in water.

Abstract: A condensation product of phenol, formaldehyde and urea condensed in the presence of a basic catalyst, said condensation product being a liquid and having a free phenol content below 0.5%, a free formaldehyde content below 3%, expressed by weight based on the total weight of liquid, and a dilutability, measured at 20.degree. C., of at least equal to 1000%.

Abstract: A method for improving the antimisting properties of an organic liquid which comprises the step of dissolving about 0.1 to about 3.0 weight percent of a neutralized sulfonated polymer in such organic liquid, having a solubility parameter of less than 9, wherein said neutralized sulfonated polymer has about 5 to about 200 meq. of pendant sulfonate groups per 100 grams of polymer and about 90.0 to 100% of said sulfonate groups are neutralized, wherein the solution of the organic liquid and the neutralized sulfonated polymer has an approximate polymer concentration, C.sub.A, which can be characterized by the formula: ##EQU1## wherein [.eta.] is the intrinsic viscosity of said solution and the polymer concentration range is 0.1 times to 10 times C.sub.A.