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US 10,927,261 B2Granted
Carbon black and rubber compounds incorporating same
AssigneeCabot Corporation
InventorsJaesun Choi, Theis F. Clarke, Dhaval A. Doshi
Life of this patent
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Abstract
Carbon blacks such as reinforcing-grade carbon blacks with high structure are described. The carbon black can have the following properties: a statistical thickness surface area (STSA) ranging from 80 m2/g to 150 m2/g, an oil absorption number (OAN) of at least 180 mL/100 g, and a crushed oil absorption number (COAN) of at least 110 mL/100 g. Rubber compounds which incorporate the carbon black also are described.
Claims37
A carbon black having the following properties:
- an STSA ranging from 80 m2/g to 150 m2/g;
- an OAN of at least 180 mL/100 g;
- a COAN of at least 110 mL/100 g, wherein the carbon black has a primary particle size of 24 nm or less.
A carbon black having the following properties:
- an STSA ranging from 80 m2/g to 150 m2/g;
- an OAN of at least 180 mL/100 g;
- a COAN of at least 110 mL/100 g, wherein the carbon black has an average primary particle size of from about 12 nm to 24 nm.
A carbon black having the following properties:
- an STSA ranging from 80 m2/g to 150 m2/g;
- an OAN of at least 180 mL/100 g;
- a COAN of at least 110 mL/100 g, wherein the carbon black has a surface energy ranging from about 1 mJ/m2 to about 15 mJ/m2.
Dependencies are inferred from the claim text.