Abstract: The solid marking composition of the invention includes from about 15% up to about 50% by weight of a polyethylene resin component having a specific gravity in the range of from about 0.95 up to about 0.96. In addition, the composition of the invention includes from about 20% up to about 55% by weight of a compatible plasticizer, and from about 3% up to about 20% by weight active material of a pigment. Optionally, the composition may include a pigment dispersing agent, such as a fatty acid. Further additives which may advantageously employed include extenders or fillers, oxidation stabilizers, UV stabilizers, and mold release agents. The composition of the invention is fabricated into marking instruments having unexpectedly improved eraseability, ease of application, barrel breaking strength, and tip breaking strength, while eliminating bloom entirely.

Abstract: Compositions of acrylic rubber and another rubber which can be nitrile rubber, hydrogenated nitrile rubber, fluoroelastomer, silicone rubber, or fluorosilicone rubber are described, in which the acrylic rubber is at least partially crosslinked. The compositions are millable and processable and, by the addition of curatives for the nitrile rubber, hydrogenated nitrile rubber, fluoroelastomer, silicone rubber, or fluorosilicone rubber, can be further crosslinked to become vulcanizates which exhibit excellent resistance to the effects of hot air, hot oil, and ozone.

Abstract: A composition for use in roll roofing membrane applications which comprise:(a) from about 93 to about 87 parts per hundred of a bituminous component having a penetration of less than about 125 (decamillimeters) at 25.degree. C. and(b) from about 7 to about 13 parts per hundred of a hydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin having a contour arm molecular weight before hydrogenation of from about 105,000 to about 140,000 and a polystyrene content of from about 25% to about 37%.

Abstract: Compositions of acrylic rubber and another rubber which can be nitrile rubber, hydrogenated nitrile rubber, fluoroelastomer, silicon rubber, or fluorosilicone rubber are described, in which the acrylic rubber can be uncured or at least partially crosslinked. The compositions are millable and processable and, by the addition of curatives for the nitrile rubber, hydroganted nitrile rubber, fluoroelastomer, siloicone rubber, or fluorosilicone rubber, can be further crosslinked to become vulcanizates which exhibit excellent resistance to the effects of hot air, hot oil, and ozone. The acrylic rubber is a copolymers from alkyl acrylate monomer which copolymer contains no crosslinking sites other than acrylate ester sites, and can be crosslinked by reaction with a paraffinic alcohol.

Abstract: A rubber composition comprising a cellulosic material containing-processed powder product and rubber components and a studless tire having a tread portion that contains said rubber composition which is improved in the performance of travelling over snow and ice is disclosed.

Abstract: A reinforced rubber composition comprising 100 parts by weight of a vulcanizable rubber including 1 to 100 parts by weight of fine short fibers of a fiber forming polyamide buried therein, and the polyamide and the rubber are bonded through a silane coupling agent. This reinforced rubber composition is suitable for use as automobile tires and the parts thereof and rubber products such as, rubber houses, rubber belts, rubber parts for automobiles, and footwear materials.

Abstract: Modified asphalt compositions are described which comprise(A) asphalt, and(B) a minor effective amount, sufficient to improve the durability of the asphalt in service, of at least one hydrocarbon-soluble acrylate polymer of the formula ##STR1## wherein R.sup.1 is a lower alkyl group containing from 1 to about 4 carbon atoms, R.sup.2 is a mixture of alkyl groups containing from about 4 to about 20 carbon atoms, and x is an integer providing a weight average molecular weight (Mw) to the acrylate polymer of about 5000 to about 1,000,000.Generally, the modified asphalt compositions will contain from about 0.01 to about 10% by weight, based on the weight of the asphalt, of the acrylate polymer as defined. The modified asphalt compositions of the present invention are useful in roofing and in preparing aggregate-containing asphalt concretes which can be employed as paving compositions.

Abstract: Disclosed is a resin composition comprising (A) from 1-98 wt. parts of a graft copolymer obtained by graft-polymerizing (a) 5-80 wt. % of a rubbery polymer and (b) 95-20 wt. % of a monomer mixture consisting of 40-90 wt. % of an aromatic vinyl compound, 60-10 wt. % of a vinyl cyanide compound and 0-50 wt. % of another ethylenically unsaturated compound copolymerizable therewith, (B) 1-40 wt. % parts of a modified copolymer selected from (B.sub.1) a modified vinyl copolymer obtained by polymerizing (a) 40-90 wt. % of an aromatic vinyl compound, (b) 60-10 wt. % of a vinyl cyanide compound, (c) 0.01-10 wt. % of a monomer having an epoxy, carboxyl or amino group, and (d) 0-40 wt. % of another ethylenically unsaturated compound, and (B.sub.2) a modified olefinic copolymer obtaind by copolymerizing (e) 50-95 wt. % of ethylene or propylene, (f) 0.1-20 wt. % of a monomer having an epoxy, carboxyl or amino group, and (g) 0-40 wt. % of another ethylenically unsaturated compound, (C) 1-60 wt.

Abstract: Disposable diapers can be manufactured at high production speeds by using for the waistband a heat-shrinkable plastic film that is dimensionally stable at ordinary room temperature and shrinks in one direction at least 25% within 5 seconds at 54.degree. C. Such a heat-shrinkable plastic film can be made by uniaxially cold-stretching a thin extrudate of a blend of an EVA copolymer and an (A-B) block copolymer of polystyrene and polyisoprene.

Abstract: Disclosed is a polymer blend having improved low-temperature impact strength comprising a copolyester of terephthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol, and a styrene-butadiene block copolymer.

Abstract: Hot-melt adhesives, useful for both glue-port and glue-gun applications, are formulated so that they can be applied at temperatures no higher than 280.degree. F. and preferably at temperatures of at most 250.degree. F. The adhesive compositions have a heat resistance of at least 125.degree. F. and are readily shaped into glue sticks for use in glue guns. The adhesive for the hot-melt adhesive compositions is suitably compounded with tackifyin resin and/or wax. The resulting composition has a shape viscosity profile, which is readily achieved, e.g., by using a high melt index adhesive polymer as an essential component.

Abstract: Contact lenses which are optically clear, wettable, flexible, of high oxygen permeability and substantially non-swellable in the aqueous ocular environment of use, of a polymer containing polyoxyalkylene backbone units are disclosed, as well as the preparation thereof and methods of treating vision defects therewith.

Abstract: Natural rubber latex compounds are modified by the addition of a high styrene content styrene-butadiene copolymer. The films prepared from these modified NR latex compositions exhibit improved tear strength and a good balance of other properties.

Abstract: In a thread-wound golf ball comprising a thread-wound core and a cover, the cover is formed of a vulcanized rubber composition comprising a base rubber containing at least 30% by weight of transpolyisoprene and has a vulcanizing sulfur content ratio between radially outer and inner half regions of from 1/2 to 4/1. Sufficient vulcanizing sulfur available throughout the cover renders the cover to be resistant to cut and shear so that the ball becomes durable.

Abstract: Blends are disclosed of monoolefin rubber with high-diene hydrocarbon rubber in which the monoolefin rubber is in the form of discrete vulcanized particles dispersed in a matrix of unvulcanized high-diene hydrocarbon rubber. The blends can be easily processed, and in a subsequent step, the high-diene hydrocarbon portion cured to give rubber articles having the ozone resistance of the monoolefin rubber and the good physical properties of the high-diene hydrocarbon rubber.

Abstract: Sulfur curable rubber compositions have improved properties such as cure rate and scorch delay when prepared by using an organic accelerator and a co-activator which is an interpolymer made from vinylpyridine and one or more diene monomers. The amount of the vinylpyridine units in the co-activator is generally from about 10 percent to about 75 percent by weight. The rubber compositions can contain either carbon black or silica.

Abstract: A process is provided to prepare a composition of bitumen, carbon black, and a block copolymer, the block copolymer being a hydrogenated or unhydrogenated block copolymer comprising, before hydrogenation, at least two blocks which comprise predominantly polymerized monoalkenyl arenes and at least one block which comprises predominantly polymerized conjugated diolefins. The process involves blending of the carbon black with the block copolymer and then combining the carbon black-block copolymer mixture with bitumen. The product of the process of this invention has excellent storage stability and aged tensile strength properties, and has superior weatherability.

Abstract: A method of biomolecule immobilization is described in which the biomolecule itself or, alternatively, a monomer-conjugated biomolecule, is grafted with free monomer onto a hydrophilic, solid-phase, polymeric substrate which has been pre-irradiated with ionizing radiation. The pre-irradiation step is carried out, preferably at -78.degree. C. in air, while the grafting step is carried out at 0.degree. C. in a substantially oxygen-free atmosphere. The technique is applicable to immobilization of a wide variety of biomolecules, such as enzymes, catalysts, hormones, lectins, drugs, vitamins, antibodies, antigens, nucleic acids, DNA and RNA segments, pesticides, dyes and fertilizers. The products may be used for therapeutic or diagnostic applications or bioseparations.

Abstract: Disclosed herein are crosslinkable water-dispersible acrylic copolymers which are prepared by free-radical initiated polymerization of ethylenically unsaturated monomers containing independently an active hydrogen group, a carboxyl group and a sulfonic group, wherein the polymerization is conducted in the presence of a wax. In combination with curing agents, the crosslinkable compositions are particularly useful in imparting markedly improved flow to dip coatings.

Abstract: A white painted balata covered golf ball has two painted layers on top of the outer surface of the cover of the golf ball. The painted layer is made from 100 parts by weight of a white base urethane paint resin with 0.1 parts by weight of a blue agent and 0.04 parts by weight of a violet agent. A top clear coat can be applied on top of the paint layers.