Abstract: An extrudable compounded polyvinyl chloride and a method for its preparation which comprises a free-flowing particulate mixture of polyvinyl chloride, selected plasticizer, silica pigment, selected heat stabilizer, selected chelator, lubricant, selected surfactant and selected slip-antiblock agent. The compounded polyvinyl chloride uniquely has, as an extruded film, anti-moisture fogging and oxygen transmissive properties suitable for packaging meat, yet can be used in high speed packaging machines.

Abstract: Light-colored unvulcanized polymers such as those used in the white sidewall areas of pneumatic vehicle tires are coated with a carbon black-free, pre-cure paint comprised of a polymer containing hydrated amorphous silica and a zinc activation system in a solubilizable form. The paint may have an aqueous or non-aqueous base; i.e., vehicle.

Abstract: There is disclosed the method of preparing photographic grade hydroquinone from technical grade hydroquinone which consists of treating a solution of the technical grade hydroquinone in the presence of a palladium catalyst with hydrogen while the hydroquinone solution is at a pH between about 3 and about 6.

Abstract: This invention relates to a textile reinforcement for use in the manufacture of rubber or polymer products in which the textile elements running in both lengthwise and generally crosswise directions are not interwoven but held together by a stitching of lightweight construction and bonded by rubber or polymer material. In addition, preferably the principal textile members are ones which include only the normal "producer's" twist rather than the usual twisted cord construction.

Abstract: An apparatus for squaring or trimming the edges of the elastomeric (uncured) cover of an industrial belt. An edge sensor is disposed to track each of the edges of a bare or uncovered carcass foward of the calender nip in which the cover is applied. Rotating trim blades for trimming excess gum from the respective edges of the covered belt are moved laterally proportionally to the algebraic sum of the deviations of the edges of the carcass from their respective ideal lines. Thus, an adequate but not excessive amount of the cover gum is provided to cover the respective edges of the carcass of the belt. The respective edge sensors are hydraulically connected with the trim blades for synchronized movement so as to maintain the described thickness of cover gum outwardly from the edges of the carcass.

Abstract: Phenol is reacted with .alpha.-methyl styrene and isobutylene to produce a mixture of substituted phenols which have excellent color characteristics and exhibit unusual and unexpected antioxidant activity.

Abstract: There is disclosed an improved process for preparing textile and industrial fibers by melt extruding a polyester resin from melt spinning apparatus to form filaments while adding to and reacting with said polyester resin while in said melt spinning apparatus a monofunctional epoxide wherein the improvement comprises incorporating in said polyester resin prior to extrusion thereof at least one catalytic compound consisting of an alkali metal salt in an amount ranging from about 0.01 to 10.0 parts by weight (calculation based on the alkali metal) per 1000 parts by weight of the polyester.

Abstract: A metal salt of an anhydride modified resin prepared by reacting an aqueous medium (A) a water soluble metal salt and (B) the sodium or potassium salt of the acid of said anhydride modified resin or (C) the sodium or potassium salt of the half acid/half ester of said anhydride modified resin. Such metal salts may have utility as additives for constituents in pressure sensitive adhesives and as tackifying agents.

Abstract: A removable track belt for installation around the outer surface of a tire carcass has on its inner surface a plurality of circumferential lands and grooves that interlock with lands and grooves on the tire carcass. The inner surface of the track belt also has a plurality of spaced axial grooves for receiving removable rigid keeper bars, to which grousers are attached. The underside of each keeper bar contains lands and grooves that also mate with those of the tire carcass.

Abstract: A solid industrial polyurethane tire and a wheel assembly comprised of such a tire adhered to a rigid central core, or hub. The hub is generally adaptable to fit onto an axle of an industrial vehicle. Said polyurethane, itself, is prepared by reacting a complex of 4,4'-methylene dianiline and a salt with a prepolymer of selected diisocyanates and selected polyester polyols and polyether polyols and prescribed mixtures thereof.

Abstract: A removable track for an annular resilient tire having a plurality of elongated transversely extending traction shoes mounted on a belt at spaced-apart positions along the belt. Each of the shoes has a plurality of raised traction bars at the end portions of the shoes and a central raised traction bar at a central portion of the shoe. The traction bars extend generally in a direction from one end of the shoe to the other end with the end bars being positioned on the shoe at a distance from a side edge less than the distance of the central bar from the side edge to provide a flex area for cleaning of the shoes. The traction bars at the ends of the shoes may include transverse bars to reinforce the ends of the shoes and angular bars at an acute angle to the side edges to provide traction in the lateral direction.

Abstract: Carboxyl terminated polymers prepared by reacting a cyclic anhydride with a liquid polymeric hydroxyl terminated polymer selected from polyethers, polydienes, and copolymers of the dienes with styrene or acrylonitrile in the presence of a catalyst selected from quaternary ammonium salts and from halogen acid salts of amines. The carboxyl terminated polymers can be used as flexibilizers in epoxy resins.

Abstract: A preform of oriented plastic coated fibers is shaped by closing of a mold on the preform. The mold contains a molding space having substantially the final shape of the finished product. A peripheral space is provided in the mold at the edges of the molding space permitting substantially unrestricted movement of the preform into the molding space during the closing operation and providing a space for the edges of the preform during curing. The mold has mating mold members and one of the mold members has sloped lead-in surfaces at the edges of the molding surface for facilitating the movement of the preform into the molding space without distortion of the oriented fibers. The shaping may be done with at least part of the mold being heated and the curing in the mold is accomplished by locking the mold members together and applying heat to the mold.

Abstract: An apparatus for coating wire tire cord on a spool with a substance for increasing the bond between the wire tire cord and rubber material used in the production of tires. The apparatus is composed of a hollow pipe which forms a chamber in which the spools of wire are coated. The pipe is inclined from the horizontal and is provided with a longitudinally extending trackway on which spools of wire can roll, by gravity, axially through the pipe and treatment chamber. Means are provided for circulating liquid coating through the chamber and for alternately creating a vacuum and pressure within the chamber to increase penetration of the liquid coating into the interstices between segments of cord wrapped on the spool. Other means are supplied for circulating a drying fluid in the chamber to dry the liquid coating on the wire of each spool disposed within the treatment chamber.

Abstract: A plurality of lengths of at least one flattened flexible polymeric tube disposed in superposed relation. Each length in cross section includes enlarged folded edge portions with a flat center portion between the edge portions. Means such as a separator or spacer having substantial thickness is inserted between or within the tube lengths to support the weight of at least a substantial part of the center portion of each length to prevent the formation of edge creases longitudinally along the edges of the tube lengths. The invention is particularly useful in the processing of uncured or unvulcanized rubber tubes either in a stacked or rolled condition.

Abstract: Polymers subject to oxidative degradation are stabilized by incorporating therein phosphite stabilizers such as the reaction product obtained by reacting a mixture of triphenylphosphite and 2,6-di-t-butyl-4-hydroxymethyl phenol or the reaction product obtained by reacting a mixture of triphenyl phosphite, 2,6-di-t-butyl phenol and paraformaldehyde.

Abstract: Tetramethylthiuram tetrasulfide can be prepared in high yields by oxidation of an aqueous solution of dimethylammonium dimethyldithiocarbamate in the presence of carbon disulfide and sulfur. The process is essentially pollution free.

Abstract: A dewebbing unit and dip tank used in the treatment of tire cord fabric with a liquid coating containing an agent for increasing the bond between the cords of the fabric and rubber material used in the production of tires. The dip tank has a pair of weirs which the liquid coating is caused to overflow for contact with the tire cord fabric which is directed across the weirs. The dewebbing unit includes a chamber in which fluid, under pressure, is alternately passed through the fabric from opposing sides of the fabric to simultaneously vibrate the fabric and pass air through the pores of the fabric.

Abstract: A sprayable pressure-sensitive adhesive mixture comprising a dispersion of a thermoplastic hydrocarbon derived resin having a softening point in the range of about 80.degree. C to about 110.degree. C derived from piperylene and 2-methyl-2-butene and a styrene-isoprene-styrene unvulcanized elastomeric block copolymer in a liquid dispersant selected from ketones and alcohols containing about 0 to about 5 weight percent alcohol. The sprayable adhesive mixture enables a method of applying a pressure-sensitive adhesive with attenuated cobwebbing which comprises applying an atomized spray coat under pressure of such an adhesive dispersion onto a substrate and drying the mixture.

Abstract: This invention discloses homopolymers and interpolymers of nonconjugated diolefins defined by the formula: ##STR1## where R.sub.1, R.sub.2 and R.sub.3 may be hydrogen, a lower alkyl group containing up to 4 carbon atoms or an aryl group and R.sub.4 may be a lower alkyl group containing up to 4 carbon atoms or an aryl group. It is also disclosed that these homopolymers and interpolymers can be prepared by solution polymerization employing cationic catalyst systems and also coordination catalyst systems. The polymers are either resinous or rubbery in nature.