Abstract: The thermoplastic elastomer compositions contain a continuous phase or matrix of an engineering thermoplastic such as ester polymer and a discontinuous phase of an acrylic rubber which is cured substantially by using epoxidized oils. The cured composition which can be dynamically vulcanized has good physical properties such as tensile strength, elongation, and high temperature resistance.

Abstract: An olefin thermoplastic elastomer composition prepared by subjecting a composition comprising (a) 100 parts by weight of an ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber having a high molecular weight, the Mooney viscosity (ML 1+4, at 125.degree. C.) of a composition consisting of 100 parts by weight of the copolymer rubber and 75 parts by weight of a mineral oil-type softening agent being 40 or more, (b) from 10 to 500 parts by weight of a crystalline ethylene-propylene block copolymer resin having a melt flow rate of 10 to 50, (c) from 3 to 300 parts by weight of a mineral oil-type softening agent, and (d) from 5 to 100 parts by weight of a low-molecular-weight propylene homopolymer resin having a number-average molecular weight of 2000 to 20000, the weight ratio of the low-molecular-weight propylene homopolymer resin to the crystalline ethylene-propylene block copolymer resin being 0.8 or less, to dynamic vulcanization using, as a vulcanizing agent, from 0.

Abstract: Thermoplastic elastomer compositions comprise a blend of polyester resin and a covalently-crosslinked acrylate rubber. Such compositions can be prepared by dynamic vulcanization of the rubber in admixture with the polyester and can exhibit high temperature dimensional stability and low oil swell.

Abstract: Thermoplastic elastomers having improved low temperature properties are provided by incorporating suitable low molecular weight ester plasticizer into blends of crystalline polyolefin homopolymer or copolymer and olefinic rubber. The rubber component of the composition is at least partially cured.

Abstract: The present invention relates to compositions comprising at least one elastomer and at least one plastic. The composition can be produced by preparing the elastomer and then blending it with the plastic. The composition can be subjected to an additional step of curing.

Abstract: A copolymer of an olefinically unsaturated monomer and an allylically headed macromolecular monomer ("macromer") of a ring-openable cyclic ether ("CE") is prepared as a comb-shaped graft copolymer of macromer. A wide variety of olefinically unsaturated monomers may be used to form the copolymer. The macromer, having an allylic group near one end and a hydroxyl group at the other, is first produced by cationic ring-opening polymerization of the CE in conjunction with an unsaturated alcohol (propagator) having an allyl double bond. The polymerization to form the graft copolymer proceeds either by free radical polymerization or by metathesis polymerization. The graft copolymer of macromer has a hydrocarbon backbone and pendant chains of polymerized CE, each pendant chain terminating with an OH group.

Abstract: Fibers are conveniently coated with a uniformly thin and continuous elastomeric coating by contacting the fibers with a (1) a water-dispersed reactive polymer, (2) epoxy resin, and (3) curing agent; and wherein said water-dispersed reactive polymer is a composition comprising. (a) a lower molecular weight reactive polymer, (b) a select solvent, (c) a dispersing agent, and (d) water. The elastomeric films have a Tg value of about 0.degree. C. or below. The elastomer coated fibers are useful as strengtheners and impact modifiers for brittle materials such as epoxy resins.

Abstract: A random copolymer is formed by emulsion polymerization from two monomeric classes. The first monomeric class is a conjugated diene or substituted conjugated diene containing from four to about eight carbon atoms. The second monomeric class is of the general formula ##STR1## wherein R.sub.1 is an alkenyl group containing from about two to about eight carbon atoms, and R.sub.2 is hydrogen or an alkyl group containing from one to about eight carbon atoms.The second monomeric class can be replaced with up to about 20 percent by weight of the general formula CH.sub.2 .dbd.CR.sub.3 C wherein R.sub.3 is hydrogen or --CH.sub.3 l and X is --OOR.sub.4, --ONR.sub.5 R.sub.6 or --OOR.sub.7 OR.sub.4 wherein R.sub.4 is an alkyl group containing from one to about four carbon atoms, --CH.sub.2 CF.sub.3 or --CH.sub.2 CF.sub.2 CF.sub.2 H, R.sub.5 and R.sub.6 are alkyl groups independently containing from one to about four carbon atoms and R.sub.7 is an alkylene group containing from 1 to about 4 carbon atoms.

Abstract: A random copolymer is formed by emulsion polymerization from two monomeric classes. The first monomeric class is a conjugated diene or substituted conjugated diene containing from four to about eight carbon atoms. The second monomeric class is of the general formulaCH.sub.2 .dbd.CHR.sub.1 CXwherein R.sub.1 is hydrogen or an alkyl group containing from 1 to about 4 carbon atoms and X is --OOR.sub.2, --ONR.sub.3 R.sub.4, or --OOR.sub.7 OR.sub.2. R.sub.2 is an alkyl group containing from 1 to about 4 carbon atoms, --CH.sub.2 CF.sub.3 or --CH.sub.2 CF.sub.2 CF.sub.2 H. R.sub.3 and R.sub.4 are alkyl groups independently containing from 1 to about 4 carbon atoms and R.sub.7 is an alkylene group containing from 1 to about 4 carbon atoms.The second monomeric class can be replaced with up to about 20 percent by weight of the general formula ##STR1## wherein R.sub.5 is an alkenyl group containing from about 2 to about 8 carbon atoms and R.sub.6 is hydrogen or an alkyl group containing from 1 to about 8 carbon atoms.

Abstract: A copolymer is formed by emulsion polymerization and then hydrogenated to obtain a thermooxidatively stable composition. The copolymer is prepared from two monomer classes. The first monomeric class comprises a fluorodiene of the structure ##STR1## wherein substituent a is independently hydrogen or fluorine, R is hydrogen or a fluoro alkyl group containing from 1 to about 4 carbon atoms and containing at least three fluoro atoms, with the proviso that both R's are not hydrogen, R.sub.1 and R.sub.2 are independently fluorine, hydrogen or a fluoro alkyl group containing from 1 to about 4 carbon atoms and containing at least three fluorine atoms.The second monomeric class is (a) a hydrocarbon diene comprising a conjugated diene, a branched conjugated diene or mixtures thereof containing from 4 to about 8 carbon atoms or a mixture of (a) with (b) a monomer of the general formula CH.sub.2 .dbd.CR.sub.3 X wherein R.sub.

Abstract: Biocompatible polymers containing immobilized biologicals which retain a high specificity for binding pathological effectors or specific groups of pathological effectors are disclosed.

Abstract: A therapeutic device for removing pathological effectors brom body fluids of a patient is disclosed. Said device includes a chamber for receiving the body fluids and positioned within the chamber is a biospecific polymer. Said biospecific polymer interacts with and binds specific pathological effectors carried by the body fluid that is passed through the chamber.

Abstract: A method for making a quite finely divided particulate copolymeric perfluorocarbon having pendant cation exchange functional groups, and having an equivalent weight of at least in excess of 900 but not greater than about 1500. In the method, the perfluorocarbon copolymer is solvated in a solvent and then precipitated from solution by addition of a substance miscible in the solvent but having essentially no capability for solvating the perfluorocarbon copolymer. The method is conducted at a temperature generally below about 300.degree. C.

Abstract: A transcutaneous blood carbon dioxide sensor together with a method for making such a sensor and for making electrodes used in the sensor. The sensor comprises a palladium/palladium oxide junction type electrode and a silver/silver halide junction type electrode applied to an electrically nonconductive substrate, partially coated with an insulative dielectric and partially coated with a polymeric membrane material including a bound electrolyte, the polymeric membrane material being permeable to carbon dioxide. The Pd/PD0 electrode was made cathodic prior to terminating the electro-oxidizing conditions.

Abstract: Disclosed is a solid state oxygen sensor utilizing a noble metal first electrode and a silver/silver halide reference electrode and an oxygen permeable polymeric membrane electrolyte. Also disclosed is a method of producing said sensor and a method of using said sensor.

Abstract: A series of ester and salt derivatives of fluorene-9-carboxylic acid and fluorene-1-carboxylic acid exhibit significant plant growth regulating properties, useful in controlling the size, shape, dormancy time, flowering time and/or fruit setting of plants, depending upon the concentrations used. They may also be used to control the growth rate, texture and color of turf grass. Presently preferred compounds include the cis-2,5-dimethylpyrrolidine salt of 1-fluorenecarboxylic acid, 9-cis-2,5-dimethyl-1-pyrrolidinyl-2-chlorofluorene-9-carboxylic acid, methyl ester, the 2,6-dimethylpiperidine salt of 1-fluorenecarboxylic acid, and the cis-2,5-dimethylpyrrolidine salt of 9-hydroxyfluorene-9-carboxylic acid.

Abstract: Novel hydrophilic copolymers are prepared containing a major portion of polymerized units of an hydroxyalkyl acrylate or methacrylate monomer and a minor portion of a nitro-substituted aryl acrylate or methacrylate monomer, and optionally with a minor amount of an alkylene glycol diacrylate or methacrylate as a cross-linking agent. These copolymers are made by a free radical polymerization mechanism or by gamma radiation of the reaction mixture. These copolymers are particularly useful as soft contact lens polymers, being extremely resistant to clouding and/or discoloration in use.

Abstract: A process and apparatus for the continuous production of spherical polymer beads in a restricted size range. Monomer droplets are produced in said size range by subjecting a fine monomer dispersion containing a controlled amount of a surface protective agent to controlled coalescence during passage through a tube (11) under laminar flow conditions. The monomer droplets are delivered from the tube (11) to the top of a polymerizing column (12) of variable cross-section wherein they undergo suspension polymerization in a laminar liquid stream descending through the column. Further polymerization in a separate reactor (30a, 30b) provides the desired polymer beads.

Abstract: A dimensionally stable asbestos diaphragm is formed by direct coating on the foraminous cathode of an electrolytic cell from an asbestos fiber-particulate polymer slurry, followed by fusion of the thermoplastic polymer.

Abstract: An improved process for the preparation of an expanded, water insoluble silicate aggregate. Anhydrous alkali metal silicate is hydrated in the presence of a curing agent, then is subjected to rapid thermal expansion. The process eliminates the use of liquid silicates, and the reaction is conducted in an essentially dry state. The expanded product has extremely low bulk density. When combined with a suitable binder and applied to various substrates, the aggregate functions as an excellent thermal barrier.