Carbon coated particles
AssigneeCabot Corporation
InventorsDavid M. Matheu, Theis Clarke, David Scott Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval Doshi, Martin C. Green
Life of this patent
Estimating the term…
Abstract
Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
Claims46
A pyrolysis process for producing carbon-coated particles, the process comprising coating core particles with a carbon layer in a carbon black (CB) furnace reactor or in a finishing section of a CB reactor, wherein the finishing section is downstream of a reaction zone and wherein the reaction zone is downstream of a plasma zone, to form the carbon-coated particles, wherein the core particles are non-carbon core particles, plasma CB core particles or preformed core particles, and wherein the carbon layer comprises carbon black.
A process for preparing carbon-coated particles, the process comprising:
- generating in situ core particles, wherein the core particles are plasma CB core particles or non-carbon core particles;
- and
- coating the core particles with a carbon layer in a CB process to form the carbon-coated particles,
- wherein the carbon layer comprises carbon black and the CB process is conducted in a CB reactor or a finishing zone of a CB reactor.
A pyrolysis process for making carbon-coated particles, the process comprising:
- introducing preformed core particles in a CB reactor;
- and
- coating the core particles with a carbon layer obtained by the pyrolysis of a liquid or gaseous feedstock in the CB reactor, thereby forming the carbon-coated particles, wherein the CB reactor is a CB furnace reactor, and the carbon layer comprises carbon black.
A pyrolysis process for preparing carbon-coated particles, the process comprising:
- introducing preformed core particles in a plasma CB reactor;
- and
- coating the core particles with a carbon layer, wherein the carbon layer is generated from a gaseous feedstock and wherein the preformed core particles are precipitated silica, fumed silica, surface modified silica, rice husk silica, clay, calcium carbonate, reclaimed pyrolysis carbon or CB particles, and wherein the carbon layer comprises carbon black.
A process for preparing carbon-coated particles, the process comprising:
- preparing in situ CB core particles in a CB reactor;
- and
- coating the CB core particles with a carbon layer obtained by the pyrolysis of a gaseous feedstock in the CB reactor, thereby forming carbon-coated particles, wherein the carbon layer comprises carbon black.
A process for making carbon-coated particles, the process comprising:
- preparing CB core particles in a plasma process;
- and
- coating the CB core particles with a carbon layer in a finishing zone of a CB reactor to form carbon-coated particles, wherein the carbon layer comprises carbon black.
A process for producing carbon-coated particles, the process comprising coating core particles with a carbon layer in a CB reactor or a finishing section thereof, to form the carbon-coated particles, wherein the core particles are non-carbon core particles, plasma CB core particles or preformed core particles and wherein the carbon layer is aciniform and has a morphology and properties of CB.
Dependencies are inferred from the claim text.