New patent application published for: ELECTRICALLY CONDUCTIVE CARBON BLACK
ELECTRICALLY CONDUCTIVE CARBON BLACK
Abstract
Electrically conductive carbon black characterized by an oil absorption number ranging from 74 cc/100 g to 114 cc/100 g, a nitrogen surface area ranging from 450 m.sup.2/g to 650 m.sup.2/g, and at least one of a primary particle size distribution ranging from 5 nm to 15 nm, a transmission value at 425 nm ranging from 95% to 100%, or a heat loss ranging from 0 to 12.5%. Elastomeric compositions comprising an elastomer at 100 parts per hundred rubber and the carbon black at loadings from 2 to 25 parts per hundred rubber exhibit enhanced electrical conductivity. Methods for preparing the elastomeric compositions by mixing the elastomer with the carbon black are also provided.
Inventors:
Herd; Charles R. (Woodstock, GA), Kollar; James Wilfred (Kennesaw, GA)
Applicant:
BIRLA CARBON U.S.A., INC. (Marietta, GA)
Family ID:
1000009434993
Appl. No.:
19/739024
Filed:
July 13, 2026
Claims
1. A carbon black having the following properties: an oil absorption number (OAN) ranging from 74 cc/100 g to 114 cc/100 g; a nitrogen surface area (NSA) ranging from 450 m.sup.2/g to 650 m.sup.2/g; and a primary particle size distribution ranging from 5 nm to 15 nm.
2. The carbon black of claim 1, having an oil absorption number (OAN) ranging from 89 cc/100 g to 109 cc/100 g.
3. The carbon black of claim 1, having an oil absorption number (OAN) ranging from 94 cc/100 g to 104 cc/100 g.
4. The carbon black of claim 1, having a nitrogen surface area (NSA) ranging from 520 m.sup.2/g to 550 m.sup.2/g.
5. The carbon black of claim 1, having a nitrogen surface area (NSA) ranging from 525 m.sup.2/g to 545 m.sup.2/g.
6. The carbon black of claim 1, having a statistical thickness surface area (STSA) ranging from 330 m.sup.2/g to 385 m.sup.2/g.
7. The carbon black of claim 1, having a statistical thickness surface area (STSA) ranging from 360 m.sup.2/g to 380 m.sup.2/g.
8. The carbon black of claim 1, having a primary particle size distribution ranging from 5 nm to 9 nm.
9. An elastomeric composition comprising: an elastomer in an amount of 100 parts per hundred rubber (phr); and the carbon black of claim 1 in an amount ranging from 2 parts per hundred rubber (phr) to 25 parts per hundred rubber (phr).
10. The elastomeric composition of claim 9, wherein the elastomer comprises natural rubber (NR), polybutadiene rubber (BR), styrene butadiene rubber (SBR), synthetic polyisoprene rubber, butyl rubber, ethylene propylene rubber, or any blend or combination thereof.
11. The elastomeric composition of claim 9, wherein the elastomer comprises natural rubber (NR), polybutadiene rubber (BR), or any blend or combination thereof.
12. A method comprising: providing an elastomer in an amount of about 100 parts per hundred rubber (phr); providing the carbon black of claim 1 in an amount ranging from 2 parts per hundred rubber (phr) to 25 parts per hundred rubber (phr); and mixing the elastomer and the carbon black to form an elastomeric composition.
13. The method of claim 12, wherein the elastomer comprises natural rubber (NR), polybutadiene rubber (BR), styrene butadiene rubber (SBR), synthetic polyisoprene rubber, butyl rubber, ethylene propylene rubber, or any blend or combination thereof.
14. A carbon black having the following properties: an oil absorption number (OAN) ranging from 74 cc/100 g to 114 cc/100 g; a nitrogen surface area (NSA) ranging from 450 m.sup.2/g to 650 m.sup.2/g; and a transmission value at 425 nm ranging from 95% to 100%.
15. The carbon black of claim 14, having a transmission value at 425 nm ranging from 96% to 100%.
16. A carbon black having the following properties: an oil absorption number (OAN) ranging from 74 cc/100 g to 114 cc/100 g; a nitrogen surface area (NSA) ranging from 450 m.sup.2/g to 650 m.sup.2/g; and a heat loss ranging from 0 to 12.5%.
17. The carbon black of claim 16, having a heat loss ranging from 0 to 10%.
18. The carbon black of claim 16, having a heat loss ranging from 0 to 8%.
19. The carbon black of claim 16, further having a volatile content of less than 5%.
20. The carbon black of claim 16, further having a 325 mesh water wash residue ranging from 0 to 40 ppm.
- Company
- BIRLA CARBON U.S.A., INC.
- Keywords
- C01B32/05