Abstract: The present invention discloses a process for hydrogenating a latex of a low molecular weight functionalized, unsaturated elastomer to produce a latex of a hydrogenated, low molecular weight, low gel, functionalized elastomer, said process comprising hydrogenating the low molecular weight, functionalized, unsaturated elastomer in the presence of (1) an oxidant selected from the group consisting of oxygen and hydroperoxides, (2) a reducing agent selected from the group consisting of hydrazine and hydrazine hydrates, and (3) a metal ion activator, wherein a hydroxylamine is added to the latex of the low molecular weight, functionalized, unsaturated elastomer or to the latex of the hydrogenated, low molecular weight, functionalized elastomer prior, during, or subsequent to the hydrogenation to produce the latex of the hydrogenated low molecular weight, low gel, functionalized elastomer.

Abstract: The present invention discloses a process for hydrogenating a latex of a low molecular weight functionalized, unsaturated elastomer to produce a latex of a hydrogenated, low molecular weight, low gel, functionalized elastomer, said process comprising hydrogenating the low molecular weight, functionalized, unsaturated elastomer in the presence of (1) an oxidant selected from the group consisting of oxygen and hydroperoxides, (2) a reducing agent selected from the group consisting of hydrazine and hydrazine hydrates, and (3) a metal ion activator, wherein a hydroxylamine is added to the latex of the low molecular weight, functionalized, unsaturated elastomer or to the latex of the hydrogenated, low molecular weight, functionalized elastomer prior, during, or subsequent to the hydrogenation to produce the latex of the hydrogenated low molecular weight, low gel, functionalized elastomer.

Abstract: The present invention discloses a process for hydrogenating a latex of a low molecular weight functionalized, unsaturated elastomer to produce a latex of a hydrogenated, low molecular weight, low gel, functionalized elastomer, said process comprising hydrogenating the low molecular weight, functionalized, unsaturated elastomer in the presence of (1) an oxidant selected from the group consisting of oxygen and hydroperoxides, (2) a reducing agent selected from the group consisting of hydrazine and hydrazine hydrates, and (3) a metal ion activator, wherein a hydroxylamine is added to the latex of the low molecular weight, functionalized, unsaturated elastomer or to the latex of the hydrogenated, low molecular weight, functionalized elastomer prior, during, or subsequent to the hydrogenation to produce the latex of the hydrogenated low molecular weight, low gel, functionalized elastomer.

Abstract: The present invention discloses a process for hydrogenating a latex of a low molecular weight functionalized, unsaturated elastomer to produce a latex of a hydrogenated, low molecular weight, low gel, functionalized elastomer, said process comprising hydrogenating the low molecular weight, functionalized, unsaturated elastomer in the presence of (1) an oxidant selected from the group consisting of oxygen and hydroperoxides, (2) a reducing agent selected from the group consisting of hydrazine and hydrazine hydrates, and (3) a metal ion activator, wherein a hydroxylamine is added to the latex of the low molecular weight, functionalized, unsaturated elastomer or to the latex of the hydrogenated, low molecular weight, functionalized elastomer prior, during, or subsequent to the hydrogenation to produce the latex of the hydrogenated low molecular weight, low gel, functionalized elastomer.

Abstract: A vulcanizable rubber composition comprising: (A) a diene-containing rubber; (B) a nitrile rubber modified-thermoplastic copolymer of an olefinically unsaturated nitrile and an ester of an olefinically unsaturated carboxylic acid; and (C) a vulcanizing system, wherein the amount of (B) is in the range from 3 to 100, preferably from 5 to 75, and more preferably from 15 to 50, parts solid weight per 100 parts solid weight of (A). The composition retains the desirable low temperature performance of the diene-containing rubber, but has better processability (as measured by mill release, die swell, green strength, etc.) than the diene-containining rubber, as well as improved resistance to attack by organic chemicals, and improved permeation resistance to organic fumes and fluids.

Abstract: This invention discloses a polymeric magnet composition that is particularly useful for extrusion into thermoplastic magnetic tubing, said polymeric magnet composition being comprised of (1) from 2 to 8 parts by weight of a rubbery polymer which is comprised of repeat units which are comprised of (a) butyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate and ethyl acrylate, (c) acrylonitrile, (d) styrene, (e) a surfactant selected from the group consisting of sulfonates and sulfate derivatives, (f) a dispersant selected from the group consisting of aromatic formaldehyde condensation products and polycarboxylates and (g) a crosslinking agent; (2) from 2 to 8 parts by weight of a styrene-butadiene resin; (3) from 80 to 90 parts by weight of a magnetic powder; and (4) from 1 to 8 parts by weight of an internal lubricant.

Abstract: This invention relates to a polymeric composition having ultraviolet light and heat resistance that can be molded into rubbery articles that can be magnetized. For instance, the rubbery compositions of this invention can be molded into magnetic seals for refrigerator or freezer doors. In such applications, the magnetic composition acts as a combination airtight gasket and magnetic closure device for the refrigerator or freezer. These polymeric magnetic compositions offer the advantage of being thermoplastic materials rather than thermosets. By virtue of being thermoplastics, they can be injection-molded into the desired form without the need for a curing step. Thus, rubbery magnetic compositions can be manufactured by a simpler, less costly process by utilizing the compositions of this invention.

Abstract: This invention supplies an insulating conveying belt composed of a belt carcass having at least one embedded reinforcing ply, a pulley cover and a top cover, said top cover having a heat resistant member adhered to said top cover, said heat resistant member being selected from the class consisting of fibers of aramid, glass, ceramic or mixtures thereof. This member may be woven or non-woven such as a punched felt mat. Preferably the fibers of the heat resistant member are woven rather than being of the non-woven type. The elastomer preferably is EPDM or blends of EPDM and silicone rubber with carbon black or silica filler.