Abstract: A resilient bushing suitable for automobiles and other vehicles is disclosed wherein the rubber compound of said bushing contains carbon blacks of different particle sizes, surface areas and structures.

Abstract: The adhesion of brass plated steel cord to rubber is improved by treating the cord in a dilute acidic alcohol dip followed by treatment with H.sub.2 S gas or by treating the cord in a dilute aqueous ammonia dip, preferably followed by treatment with H.sub.2 S gas, before combining the cord with a vulcanizable rubber compound and vulcanizing the same.

Abstract: Cyanoethylated and/or cyanopropylated hydrazides are useful as curing agents for polyglycidyl ether resins. These hydrazide-epoxy resin mixtures have useful pot lives and exhibit fast cures.

Abstract: An expansion joint sealing assembly of the type employing a flexible membrane extending between two relatively rigid elongated elastomeric pads is adapted to seal the gap in the area where a curb and roadway portion of the deck intersect. The assembly is especially useful in situations where the gap extends at a skew angle across the roadway, so that the line of intersection between the curb and roadway portions of the deck, along which the sealing assembly must be bent, is not perpendicular to the longitudinal dimension of the sealing assembly. This creates a complex bending angle for the flexible membrane portion of the seal. In brief terms, the problem is solved by providing laterally extending convolutions in the side edge portions of the membrane and a locking rib on the top of each convolution which fits into an appropriate slot in the elastomeric pad to which each side edge portion of the membrane is connected.

Abstract: An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms and being essentially free of isocyanate groups and (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH.sub.2, --NH-- and/or OH groups, said reaction product being free of active hydrogen atoms.

Abstract: Corn syrup is used to extend and stiffen carpet backing adhesive containing a carboxylated styrene butadiene copolymer latex.

Abstract: Liquid compositions suitable for hot post-mold coating of cured sheet molding compound (SMC) parts comprise a reaction product of an epoxide and an unsaturated carboxylic acid mixed with a low shrink additive and a filler having a sheet-like structure. These liquid compositions are used to smooth surfaces, fill porosity and other voids and to eliminate or reduce sink marks. Coatings typically are cured in less than two minutes and appear able to provide many features of normal painting without paint facilities except possibly those needed for touch-up.The application method used to date has been to compression mold an SMC part in the usual way, separate the mold halves, inject the liquid composition and reclose the mold for a second cure cycle. A unique feature of the liquid composition is its ability to adhere to an uncleaned SMC molding.

Abstract: A PVC roofing membrane cast from a plastisol has less than 1.5% shrinkage when held at 176.degree. F. (80.degree. C.) for six hours and remains flexible at -60.degree. F. (-51.degree. C.). The low shrinkage reduces tensions in the roofing membrane, simplifying the application of the membrane to a roof, and reducing stresses caused by dimensional changes at high service temperatures.

Abstract: Polyetherpolyols containing residues of catalysts of the double metal cyanide complex class are treated with a strong base and ion exchanged or neutralized and filtered to provide a stable polyol with reduced tendency to form allophanates with diisocyanates. Further, the addition of ethylene oxide to the polyol while in contact with the strong base serves to end cap the polyol to provide it with primary hydroxyl groups.

Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.

Abstract: An aqueous alkaline dispersion of a rubbery graft or over polymerized copolymer of a diene and a vinyl pyridine on a polyacrylate seed (core or substrate), said acrylate polymer having a Tg of not above about -20.degree. C., desirably also containing a polybutadiene, and a water soluble, heat reactable phenolic resin, in certain amounts is useful in forming an adhesive for bonding glass fiber reinforcing elements or cords to rubber compounds or stocks. After dipping the glass fiber cord in the one-step adhesive dip, the coated cord is heated to dry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing glass fiber cord is combined or laminated (calendered) with a curable rubber compound and the resulting assembly is cured to form a composite in which the glass fiber cord is bonded to the rubber by means of said adhesive.

Abstract: A composition of a blend of a carboxylated copolymer latex and an acrylate copolymer latex containing a minor amount by weight of a heat sensitizer sufficient to gel the composition and which also can contain fillers, wetting agents and stabilizers, and so forth can be used to provide a water resistant film on the surface of a hot rubber compound or composition which subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked or assembled without sticking.

Abstract: A resilient strip with a channel-shaped section that attaches to a flange on an automobile frame has improved metal carrier fixed to its channel-shaped section. The metal carrier has a continuous longitudinal web with sheet metal elements extending from either side that are triangular in shape. The triangular-shaped elements require only half the metal as the conventional rectangular elements, yet they have the same holding power for maintaining the resilient strip on the flange of the automobile body.

Abstract: To facilitate relative movement between the internal surfaces of a pneumatic tire which come into contact when the tire is run in a deflated condition, the interior of the tire is coated with a lubricant which does not flow at normal tire operating temperatures. The matrix of the lubricant is a polyester, polyurea or polyurethane which does not begin to flow until the tire reaches a temperature of from 65.degree. C. to 150.degree. C. If the lubricant were allowed to flow at operating temperatures, it would adversely effect the balance and performance of the tire. The high tire temperature indicates that the tire is flat and reduces the viscosity of (liquifies) the lubricant causing it to flow. The lubricant then reduces rubbing friction and temperature rise which would otherwise occur by rubber-to-rubber contact. The lubricated tire can be run flat to a service station.

Abstract: Vulcanizable rubber compositions providing excellent bonding of textile or metal reinforcing fibers thereto which comprises a rubber, a filler material, and an N-(substituted oxymethyl) melamine, 4,4'-isopropylidenediphenol reaction product or solution.

Abstract: At least a substantial amount of the corrosion products on the surface(s) of brass plated steel cord are removed by treatment in an aqueous solution containing a minor amount of an NH.sub.4, Na, K, Li, Ca, Mg, Sr, Ba and Zn salt of a saturated aliphatic carboxylic acid of from 1 to 5 carbon atoms.

Abstract: The adhesion of brass plated steel cord to rubber is improved by treating the cord in a dilute acidic alcohol dip followed by treatment with H.sub.2 S gas or by treating the cord in a dilute aqueous ammonia dip, preferably followed by treatment with H.sub.2 S gas, before combining the cord with a vulcanizable rubber compound and vulcanizing the same.

Abstract: An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms or being essentially free of isocyanate groups and (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH.sub.2, --NH-- and/or OH groups, said reaction product being free of active hydrogen atoms.

Abstract: A composition of a blend of a carboxylated copolymer latex having a Tg of not less than about -30.degree. C. such as a copolymer of styrene, itaconic and methacrylic acids and butadiene-1,3 and an acrylate copolymer latex having a Tg of not less than about +30.degree. C. such as a copolymer of ethylacrylate, methyl methacrylate and acrylamide containing a minor amount by weight of a heat sensitizer sufficient to gel the composition and which also can contain fillers, wetting agents and stabilizers, and so forth can be used to provide a water resistant film on the surface of a hot rubber compound or composition which subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked or assembled without sticking.

Abstract: A method and apparatus for forming a thermoset in-the-mold coating on a hot, cured glass fiber reinforced thermoset resin substrate by (1) separating the mold halves slightly while maintaining a seal with the shear edge, (2) injecting an in-the-mold coating resin in a stream which flows parallel from the injector onto a surface of the substrate, and (3) closing the mold and curing the coating under pressure. The separation and of the mold halves is performed by the conventional mold ram. Preferably the mold surface forming the coated surface of the substrate is roughened.