Carbon black and rubber compounds incorporating same

Patent metadata

Field	Value
Publication number	US-10927261-B2
Application number	US-201815964480-A
Country	US
Kind code	B2
Filing date	Apr 27, 2018
Priority date	May 3, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

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 m 2 /g to 150 m 2 /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.

First claim

What is claimed is:

1. A carbon black having the following properties:
an STSA ranging from 80 m 2 /g to 150 m 2 /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.

2. The carbon black of claim 1 , having the following properties:
said STSA ranging from 90 m 2 /g to 150 m 2 /g;
said OAN of at least 180 mL/100 g;
said COAN of at least 120 mL/100 g.

3. The carbon black of claim 1 , having the following properties:
said STSA ranging from 100 m 2 /g to 150 m 2 /g;
said OAN of at least 200 mL/100 g;
said COAN of at least 120 mL/100 g.

4. The carbon black of claim 1 , wherein the carbon black has a ratio of iodine adsorption number/STSA ranging from 0.9 to 1.5.

5. The carbon black of claim 4 , wherein the ratio of iodine adsorption number/STSA ranges from 1 to 1.3.

6. The carbon black of claim 4 , wherein the iodine adsorption number ranges from 90 mg/g to 220 mg/g.

7. The carbon black of claim 1 , wherein the OAN is at least 200 mL/100 g.

8. The carbon black of claim 1 , wherein the OAN is at least 220 mL/100 g.

9. The carbon black of claim 1 , wherein the OAN ranges from 200 mL/100 g to 310 mL/100 g.

10. The carbon black of claim 1 , wherein the COAN is at least 130 mL/100 g.

11. The carbon back of claim 1 , wherein the COAN ranges from 120 mL/100 g to 150 mL/100 g.

12. The carbon black of claim 1 , wherein the carbon black has a BET surface area ranging from 70 m 2 /g to 200 m 2 /g.

13. The carbon black of claim 1 , wherein the carbon black has a BET surface area ranging from 90 m 2 /g to 200 m 2 /g.

14. The carbon black of claim 1 , wherein the carbon black has a BET surface area ranging from 70 m 2 /g to 130 m 2 /g.

15. The carbon black of claim 1 , wherein the carbon black has a ΔD 50 of 75 nm or less.

16. The carbon black of claim 1 , wherein the carbon black further comprises the property 133.33*(ΔD 50 /D mode )/COAN<1.

17. The carbon black of claim 1 , wherein the carbon black has a L a crystallite size of 29 Å or less.

18. The carbon black of claim 1 , wherein the carbon black has an average primary particle size of from about 12 nm to 24 nm.

19. The carbon black of claim 1 , wherein the carbon black has a surface energy ranging from about 1 mJ/m 2 to about 15 mJ/m 2 .

20. The carbon black of claim 1 , wherein the carbon black has a tint strength ranging from 110% to 140%.

21. A modified carbon black comprising the carbon black of claim 1 modified by at least one of: at least one coupling agent chemically attached to a surface thereof, at least one chemical group chemically attached to a surface thereof, at least one chemical group adsorbed on a surface thereof, a surface coating, a surface oxidation, or any combination thereof.

22. The modified carbon black of claim 21 , wherein the at least one chemical group is at least one organic group.

23. A rubber compound comprising at least one polymer and the carbon black of claim 1 .

24. A vulcanized rubber compound comprising at least one polymer and the carbon black of claim 1 .

25. The carbon back of claim 1 , wherein the COAN ranges from 140 mL/100 g to 160 mL/100 g.

26. The carbon back of claim 1 , wherein the COAN is at least 140 mL/100 g.

27. A carbon black having the following properties:
an STSA ranging from 80 m 2 /g to 150 m 2 /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.

28. The carbon black of claim 27 , wherein the carbon black has a ratio of iodine adsorption number/STSA ranging from 0.9 to 1.5.

29. The carbon black of claim 27 , wherein the carbon black has a BET surface area ranging from 70 m 2 /g to 200 m 2 /g.

30. The carbon black of claim 27 , wherein the carbon black has a ΔD 50 of 75 nm or less.

31. The carbon black of claim 27 , wherein the carbon black further comprises the property 133.33*(ΔD 50 /D mode )/COAN<1.

32. The carbon black of claim 27 , wherein the carbon black has a surface energy ranging from about 1 mJ/m 2 to about 15 mJ/m 2 .

33. The carbon black of claim 27 , wherein the carbon black has a tint strength ranging from 110% to 140%.

34. A modified carbon black comprising the carbon black of claim 27 modified by at least one of: at least one coupling agent chemically attached to a surface thereof, at least one chemical group chemically attached to a surface thereof, at least one chemical group adsorbed on a surface thereof, a surface coating, a surface oxidation, or any combination thereof.

35. A rubber compound comprising at least one polymer and the carbon black of claim 27 .

36. A vulcanized rubber compound comprising at least one polymer and the carbon black of claim 27 .

37. A carbon black having the following properties:
an STSA ranging from 80 m 2 /g to 150 m 2 /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/m 2 to about 15 mJ/m 2 .

Assignees

• Cabot Corp

Inventors

• Choi Jaesun
• Clarke Theis F
• Doshi Dhaval A

Classifications

• C09C1/50

  Furnace black {; Preparation thereof (separation or recovery C09C1/487)} · CPC title

• C01P2004/51

  Particles with a specific particle size distribution · CPC title

• C08K3/04

  Carbon · CPC title

• C08K9/04

  Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)} · CPC title

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title