Abstract

Disclosed herein are EPDM-diene copolymers that have a low molecular weight and are liquid at room temperature. In a specific embodiment, the method of making the copolymer includes: adding a solvent to a reactor; adding a propylene and a catalyst mixture to the solvent in the reactor to make a first reaction mixture, where the catalyst mixture includes: one or more catalysts, one or more cocatalysts, and one or more catalyst reactivators; contacting an ethylene to the first reaction mixture to make a second reaction mixture; and contacting a vinyl norbornene to the second reaction mixture to make a copolymer, where the copolymer has a molecular weight from about 2,500 g/mol to about 1,000,000 g/mol, and where the copolymer has a viscosity from about 1,000 cP to about 2,500,000 cP at 100° C.

IPC Classes  ?

• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• C08F 210/18 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers with non-conjugated dienes, e.g. EPT rubbers
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment

Abstract

Disclosed herein are styrene butadiene rubber latex compositions with high solids content and methods for making and using these compositions. The method for making the styrene butadiene rubber latex compositions can include mixing a seed, a styrene, an initiator, a base, a surfactant, and a solvent; adding a first portion of 1,3-butadiene to make a first reaction mixture; heating the first reaction mixture for a first reaction time to make a first styrene butadiene rubber latex; mixing the first styrene butadiene rubber latex, a styrene, a base, an initiator, a surfactant, and a solvent; adding a second portion of 1,3-butadiene to make a second reaction mixture; and heating the second reaction mixture for a second reaction time to make a second styrene butadiene rubber latex, where the second styrene butadiene rubber latex has a solids content higher than that of the first styrene butadiene rubber latex.

IPC Classes  ?

• C09J 109/08 - Latex
• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers

Abstract

Disclosed herein are styrene butadiene rubber latex compositions with high solids content and methods for making and using these compositions. The method for making the styrene butadiene rubber latex compositions can include mixing a seed, a styrene, an initiator, a base, a surfactant, and a solvent; adding a first portion of 1,3-butadiene to make a first reaction mixture; heating the first reaction mixture for a first reaction time to make a first styrene butadiene rubber latex; mixing the first styrene butadiene rubber latex, a styrene, a base, an initiator, a surfactant, and a solvent; adding a second portion of 1,3-butadiene to make a second reaction mixture; and heating the second reaction mixture for a second reaction time to make a second styrene butadiene rubber latex, where the second styrene butadiene rubber latex has a solids content higher than that of the first styrene butadiene rubber latex.

IPC Classes  ?

• C09J 109/08 - Latex
• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers

Abstract

2/gm treated with a plurality of silanes coupling agents to form a wet polymer silica masterbatch, then blending the masterbatch with a latex rubber component that includes a styrene-butadiene copolymer rubber or a blend of the styrene-butadiene copolymer rubber and another conjugated diene base rubber using a plurality of coupling agents simultaneously.

IPC Classes  ?

• C08J 3/20 - Compounding polymers with additives, e.g. colouring

Abstract

A compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds in an aqueous suspension. Polymer-silica reinforced masterbatches are prepared by addition of the compatibilized silica slurry using the formed compatibilized silica.

IPC Classes  ?

• C07F 7/08 - Compounds having one or more C—Si linkages
• C08J 3/22 - Compounding polymers with additives, e.g. colouring using masterbatch techniques
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds

Abstract

A polymer masterbatch in latex form having nanomaterials and a compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds attached to the silica in an aqueous suspension.

IPC Classes  ?

• C08J 3/20 - Compounding polymers with additives, e.g. colouring

Abstract

A polymer composition of a compatibilized silica in blends of acrylonitrile butadiene polymer and styrene butadiene polymer comprising six to ninety percent by weight of a compatibilized silica, at least one percent by weight of a coupling agent, at least one percent by weight of a styrene butadiene polymer, and at least one percent by weight of an acrylonitrile butadiene polymer is described herein. The polymer composition can have a minimum amount of at least ten percent by weight of 15:50 ratio, acrylonitrile to butadiene polymer, with the remainder being compatibilized silica.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 5/15 - Heterocyclic compounds having oxygen in the ring
• C08K 9/00 - Use of pretreated ingredients
• C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
• B27K 5/00 - Staining or dyeing woodBleaching woodTreating of wood not provided for in groups or
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08L 9/06 - Copolymers with styrene
• C07F 7/18 - Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages

Abstract

A recycled elastomeric composition that can include a natural rubber, a synthetic elastomeric polymer, or combinations thereof is described herein. The synthetic elastomeric polymer can include butadiene and styrene. The recycled elastomeric composition can also include a compatibilized silica with a coupling agent, a crumb rubber, a carbon black, a filler, and an extender oil. Articles comprising the recycled elastomeric composition can include: floor mats, tires, belts, rollers, footwear, wire or cable jacketing, roof edging, tubulars, and marine impact bumpers.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 11/00 - Use of ingredients of unknown constitution, e.g. undefined reaction products