Abstract: A relatively small amount of a plasticizer having an SP value of at least 8.8 and a molecular weight of at most 550 is added to blend rubber of NBR-PVC in which NBR has an AN content of from 43 to 50% by weight. The fuel impermeability and the low-temperature flexibility of the resulting rubber composition are improved to be comparable to those of FKM, and the amount of the plasticizer and its reaction product to be released from the rubber composition in fuel is reduced. Adding a controlled amount of carbon black to the rubber composition makes the composition have favorable electroconductivity. The rubber composition is formed into hoses or electroconductive hoses of low fuel permeation.

Abstract: The invention relates to a method of making an interpenetrating polymer network (IPN) of at least a first polymer and a second polymer from a first and second component wherein the first component is the first polymer, or a polymerizable reactant selected from monomers or pre-polymers polymerizable to the first polymer and mixtures thereof, and the second component is a polymerizable reactant selected from monomers or pre-polymers polymerizable to the second polymer and mixtures thereof, the method comprising the steps of forming a reaction mixture of at least the first component, the second component, an initiator or catalyst and a crosslinker, effecting polymerization and crosslinking of polymerizable reactant, and recovering the IPN so obtained, wherein during the polymerization and crosslinking, a surface of the reaction mixture is maintained in contact with a third component comprising each said polymerizable reactant at a chemical potential similar to the chemical potential of the same reactant in th

Abstract: A chemical anchoring adhesive includes first and second parts each having a highly viscous, putty-like consistency. The first and second parts are joined directly to each other along an interface. The first part includes a resin, and the second part includes a curing agent. The anchoring adhesive does not require separate encapsulation of one or both parts, and can be formed and cut to desired sizes and quantities at any stage before insertion into a borehole.

Abstract: A method is disclosed for stabilizing a thermoplastic resin, which may also contain carbon black and/or glass, wherein the method comprises adding to the resin a stabilizing amount of at least one sterically hindered phenol antioxidant, at least one secondary amine antioxidant and/or at least one N,N′-substituted oxamide antioxidant, and at least one thioether antioxidant.

Abstract: A heat-expandable microcapsule comprising a polymer shell formed by polymerizing (I) acrylonitrile, a main monomer component, (II) a monomer having carboxyl and (III) a monomer having groups reactive with the carboxyl of the monomer (II) and of a liquid having a boiling point lower than the softening point of the polymer and being encapsulated in the polymer shell. The heat-expandable microcapsules expand within high temperature range, 240° C. or above, and have heat-resistance.

Abstract: A polymer is obtained by removing the medium from a polymer dispersion or polymer solution containing at least one polymeric phase and at least one stabilizer suitable to protect against the damaging effect of light, heat and/or oxidation.

Abstract: Process for the preparation of pulverulent polymers by polymerization in supercritical carbon dioxide in the presence of polyoxyalkylene-polysiloxane copolyers The invention relates to a process for the preparation of pulverulent polymers by polymerization of ethylenically unsaturated monomers (a) in supercritical carbon dioxide as inert diluent, where the polymerization is carried out in the presence of polyoxyalkylene-polysiloxane copolymers.

Abstract: Pigment composition obtainable by(a) mixing a latent pigment with a polymerizable substance, and(b) treating the mixture of step (a) with heat while mixing the reaction mixture, and(c) cooling the treated reaction mixture to room temperature, and, if desired, working up the obtained pigment composition, a process for its preparations, its use and compositions comprising it.

Abstract: A silicone resin-containing emulsion composition is based on a silicone resin-containing emulsion obtained by emulsion polymerization of a mixture containing (A) a silanol group-bearing silicone resin and (B) a radical-polymerizable vinyl monomer. The silicone resin (A) contains 30-100 mol % of T units: R.sup.1 --SiZ.sub.3, and specifically 30-80 mol % of T-2 units: R.sup.1 --Si(OH)Z'.sub.2 among other T units wherein R.sup.1 is a monovalent hydrocarbon group, Z is a OH group, hydrolyzable group or siloxane residue, and Z' is a siloxane residue, and has a number average molecular weight of at least 500. The composition has a good film forming ability and cures into a flexible film having mar, weather and chemical resistance.

Abstract: A composition comprising:(a) polyethylene;(b) as a scorch inhibitor, 1,1-diphenylethylene, substituted or unsubstituted;(c) optionally, a cure booster; and(d) an organic peroxide.

Abstract: Linear, alternating .alpha.-olefin-CO copolymers are obtainable by polymerization of a monomer mixture comprisinga) carbon monoxide,b) 1-alkenes which are functionalized by a covalently bonded crown ether unit or cryptand unit A containing at least 5 heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur and/or selenium in the polyheteroatom framework, and, if desired,c) C.sub.2 -C.sub.24 -1-alkenes.

Abstract: The present invention relates to rubber pellets made of an amount of vulcanized rubber and an amount of binder, with the vulcanized rubber preferably being discarded rubber. Additionally, the rubber pellets will preferably contain an amount of filler materials which are plastic or rubber or combinations thereof so that the preferred rubber pellet contains an amount of rubber equal to between about 50% and about 95% by weight of the rubber pellet, an amount of filler material equal to between about 0 and about 45% by weight of the rubber pellet, and an amount of binder equal to between about 5% and about 10% by weight of the rubber pellet. The rubber pellets are used in the formation of asphalt and are desirable because they provide necessary constituents to the asphalt and allow for elimination of equipment and separate ingredient addition steps from the asphalt formation process. The present invention is also desirable because it provides for a way to desirably dispose of waste rubber materials.

Abstract: A curable organosiloxane-polyisobutylene composition comprising 20 to 87 weight percent of a polyisobutylene comprising at least 2 alkenyl groups per molecule, 0.4 to 70 weight percent of a polyorganosiloxane comprising at least 2 silicon-bonded alkenyl groups per molecule, 7 to 50 weight percent of a treated reinforcing silica filler, an amount sufficient to cure the composition of an organohydrogensiloxane crosslinker, and a platinum-group metal hydrosilation catalyst in an amount sufficient to effect curing of the composition. Cured elastomers prepared from the compositions can have improved resistance to gas and vapor permeability.

Abstract: The present invention discloses a composition of matter consisting of a high impact polystyrene exhibiting improved environmental stress crack resistance. The HIPS material is formed utilizing polybutadiene, polyisoprene, and copolymers thereof with styrene, having a Mooney viscosity exceeding about 35 and a gel content of up to about 28%. The present invention discloses the use of a combination of lubricant additives to obtain a HIPS material with higher ESCR values than either additive alone could provide, and also discloses the optimum level of each additive.

Abstract: Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.

Abstract: Aqueous polymer emulsions contain dispersants based on natural lecithins.

Abstract: A process for preparing a controlled functional density poly(secondary amine) comprising: (a) contacting a polymer containing olefinic unsaturation with carbon monoxide in hydrogen under hydroformylation conditions in the presence of a hydroformylation catalyst to produce a controlled functional density polyaldehyde containing reactive carbon-carbon double bonds, and (b) contacting the polyaldehyde with hydrogen and a primary amine under reductive amination conditions in the presence of a ruthenium-containing imine hydrogenation catalyst or (b.sup.1) contacting the polyaldehyde with a sterically hindered aliphatic or cycloaliphatic primary amine or an aromatic primary amine under reductive amination conditions in the presence of an alkali metal borohydride to produce poly(secondary amine) having a substantially equivalent ratio of secondary amine groups to reactive carbon-carbon double bonds as the ratio of aldehyde groups to reactive carbon-carbon double bonds in the polyaldehyde.

Abstract: A process for preparing a controlled functional density poly(secondary amine) comprising: (a) contacting a polymer containing olefinic unsaturation with carbon monoxide in hydrogen under hydroformylation conditions in the presence of a hydroformylation catalyst to produce a controlled functional density polyaldehyde containing reactive carbon-carbon double bonds, and (b) contacting the polyaldehyde with hydrogen and a primary amine under reductive amination conditions in the presence of a ruthenium-containing imine hydrogenation catalyst or (b.sup.1) contacting the polyaldehyde with a sterically hindered aliphatic or cycloaliphatic primary amine or an aromatic primary amine under reductive amination conditions in the presence of an alkali metal borohydride to produce poly(secondary amine) having a substantially equivalent ratio of secondary amine groups to reactive carbon-carbon double bonds as the ratio of aldehyde groups to reactive carbon-carbon double bonds in the polyaldehyde.

Abstract: A one-component moulding and sealing compound based on prepolymers with terminal silyl groups with at least one hydrolyzable substituent on the Si atom, organo-metallic tin compounds as the catalyst and also inorganic fillers containing a polyvinyl chloride and fatty acid amide having thixotropic effect to reduce surface tackiness.

Abstract: This invention relates to improved polyepoxide resins having enhanced physical and elastic properties. The polyepoxide resins comprise an polyepoxide resin based on a polyglycidyl ether of a phenolic type compound and an acrylate terminated urethane prepolymer. The improvement in the polyepoxide resin formulation comprises incorporating an aliphatic, aliphatic ether or ester component having monofunctional reactivity with an amine hydrogen and an amine curative having from 3 to 10, and preferably 3 to 5 epoxide reactive hydrogen atoms into the epoxy resin. The presence of the monofunctional and aliphatic amine reactive component along with the acrylate terminated urethane prepolymer results in an epoxy resin having the enhanced properties.

Abstract: The present invention relates to coating agents based on hydroxyl-containing binders and isocyanate-containing crosslinking agents, in which coating agentsI.) the binder comprisesA1) 5 to 80% by weight of at least one polyester or one alkyd resin having an OH number from 0 to 200 mg of KOH/g and an acid number from 0 to 200 mg of KOH/g,A2) 95 to 20% by weight of at least one polyacrylate having an OH number from 30 to 250 mg of KOH/g and an acid number from 0 to 50 mg of KOH/g,the sum of the weight proportions of components (A1) and (A2) being in each case 100% by weight, andII.) the binder is obtainable from1.) at least one polycondensation resin whose acid component comprises 5 to 100 mol % of cycloaliphatic polycarboxylic acids and/or esterifiable derivatives thereof,2.) at least one polyacrylate, at least some of which has been prepared in the presence of the polycondensation resin obtained in the first process step and3.

Abstract: Unsaturated polyester resins of the type already having reactive liquid polymers reacted into the backbone of the resins, are cured in the presence of a reactive liquid polymer additive admixed with the prereacted unsaturated polyester resin. Heating of this system during cure causes the reactive liquid polymer additive to miscibilize with the unsaturated polyester resin. The unsaturated polyester resin modified in the manner described above shows a significant enhancement in toughness as measured by fracture energy over unmodified counterparts or counterparts modified by known methods of adduction or admixing alone.

Abstract: Crosslinkable carbosilane polymer formulations are prepared from saturated or unsaturated carbosilane polymers containing reactive silicon hydride radicals in the polymer chain combined with polycyclic polyene crosslinkers having two or more double bonds that are reactive in the hydrosilation crosslinking reaction.

Abstract: A process for the preparation of toner particles which comprises mixing at least one resin monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until partial polymerization has been accomplished; mixing with the aforementioned partially polymerized product pigment or dye particles, thereby forming an organic phase; dispersing the organic phase in water containing a stabilizing component whereby there is obtained a suspension of toner particles in water; and polymerizing the toner suspension.

Abstract: A homogeneous composite polymer containing, in an interpenetrated form, 20% to 80% by weight of silica and 80% to 20% by weight of a three-dimensional crosslinked acrylic, vinyl and/or allyl copolymer comprising, in a copolymerized form, 98% to 70% by weight of at least one monofunctional acrylic, vinyl or allyl monomer and 2% to 30% by weight of a difunctional acrylic or allyl crosslinking monomer is useful in liquid chromatography.

Abstract: There are provided reinforcing additives, e.g., for polyolefins, comprising (a) a hydrolyzable silane having an ethylenically unsaturated amide substituent and (b) a free radical generator. Also provided is a single step method of using such additives with hydroxyl-containing reinforcements, such as mica to improve processability and physical and thermal resistance properties of reinforced resin compositions.

Abstract: Directed to functionalized saturated polymers having elastomeric characteristics and to compositions containing minor amounts thereof and to the process of making them.

Abstract: A process for the preparation of a biaxially stretch-oriented film having at least one opaque layer is described. The opaque layer is composed essentially of propylene polymer and fillers in a quantity of about 10 to 40% by weight, relative to the total weight of propylene polymer and fillers. In production, the granules are melted in a screw extruder, are forced through a die and are formed by cooling to give a preformed film. The preformed film is then stretch-oriented both along the machine direction and transversely perpendicular to the machine direction and is then heat-set. The fillers are added in the form of a masterbatch to the granules of unfilled polymers. The masterbatch should have a filler content of more than about 30% by weight.

Abstract: The specification describes a composition curable by high-energy radiation in the presence of oxygen which contains conventional monomers, oligomers and/or polymers curable by high-energy radiation besides minor amounts of a natural wax, a solvent extraction product of a natural wax, a wax alcohol, a wax ester and/or a wax carboxylic acid. The specification also describes the preparation of said composition and the use thereof in the formation of coatings.

Abstract: A stable copolymer dispersion is prepared by addition copolymerization of (1) a monomeric adduct of an active hydrogen compound, e.g., a polyether polyol, and an acrylyl compound such as methacryloyl chloride with (2) ethylenically unsaturated monomer(s), e.g., styrene or a mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound such as a polyether polyol. The molar ratio of acrylyl moiety to active hydrogen compound is less than 0.1:1. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.

Abstract: A heat-resistant composition containing an organic or elemento-organic binder and a filler. As a binder the composition contains at least one compound of the formula: ##STR1## wherein R is an organic radical with a number of carbon atoms of from 2 to 1,000; a radical with a number of carbon atoms of from 2 to 1,000 containing 1 to 1,000 atoms of silicon and/or1 to 1,000 atoms of fluorine, and/or1 to 1,000 atoms of chlorine, and/or1 to 1,000 atoms of bromine, and/or1 to 1,000 atoms of nitrogen, and/or1 to 1,000 atoms of sulphur, and/or1 to 1,000 atoms of phosphorus, and/or1 to 1,000 atoms of boron, and/or1 to 1,000 atoms of oxygen,X and Y are each --NH.sub.2, --OH, --SH, --NCO, --NSO, --NCS, said X and Y may be the same or different; Z is --C.tbd.N, --C.tbd.CH and is located in the same or different positions selected from alpha-, beta-, ortho- and peri- positions relative to X and Y; n.gtoreq.1, m.gtoreq.1, p.gtoreq.

Abstract: A furan polymer concrete is described comprising aggregate, acid catalyst and binder which includes furfuryl alcohol and a crosslinking monomer. The binder has a low viscosity, thereby allowing significantly less binder to be used in forming the polymer concrete.

Abstract: In providing an adhesive connection or a seal using a thermoplastic adhesive for securing materials together, a thermochrome dye is added to the thermoplastic adhesive so that it provides a color change in the temperature range between the temperature where a satisfactory moistening effect is achieved and the temperature where the satisfactory moistening effect is no longer present.

Abstract: A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.

Abstract: A novel quick setting polymer concrete composite comprising a furfuryl alcohol monomer, an aggregate containing a maximum of 8% by weight water, and about 1-10% trichlorotoluene initiator and about 20-80% powdered metal salt promoter, such as zinc chloride, based on the weight of said monomer, to initiate and promote polymerization of said monomer in the presence of said aggregate, within 1 hour after mixing at a temperature of -20.degree. C. to 40.degree. C., to produce a polymer concrete having a 1 hour compressive strength greater than 2000 psi.

Abstract: Dispersion polymerization process for producing colored toner particles comprising admixing a colorant with a monomer to form an oil soluble organic phase, admixing a polymerization initiator with the organic phase, admixing the organic phase with an aqueous phase containing a suspending agent and an inorganic salt therein under polymerization conditions to form a suspension, polymerizing the suspension under continuous agitation to provide polymer particles containing the colorant and having a particle size in the range of from about 1 micron to about 100 microns, and recovering the polymer particles. The inorganic salt inhibits polymerization in the aqueous phase. Developer compositions and processes for developing electrostatic latent images are also disclosed.

Abstract: This invention is concerned with an aqueous liquid composition comprising unsaturated monomers including (1) magnesium diacrylate and/or calcium diacrylate, (2) a polyol monoacrylate selected from hydroxyethyl acrylate and hydroxypropyl acrylate, and (3) a polyethylenically unsaturated monomer copolymerizable with (1) and (2) to produce covalent cross-linking bonds in the copolymer besides the ionizable magnesium bonds. The weight ratio of (3) to the sum of (1) and (2) is in the range of about 3:97 to about 5:95. Examples of monomers that can be used as part or all of component (3) include N,N'-methylene-bis-acrylamide and ethylene glycol diacrylate.