US5288788A
Expired / Lapsed
US
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Carbon blacks imparting superior treadwear/hysteresis performance and process for producing carbon blacks
Assignee: Cabot Corp
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Filing: 1991-01-08
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Granted: 1994-02-22
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Expires: 2011-01-08
Abstract
Abstract Carbon blacks having a CTAB≧(I 2 No.+5 m 2 /g); a CDBP≧104 cc/100 g; a Tint of (0.5(CTAB)+70 m 2 /g>Tint>0.5(CTAB)+60 m 2 /g) and an ASTM aggregate volume≧ 480,000 (nm) 3 . Also disclosed are rubber compositions in which the carbon blacks are incorporated.
Inventors
- 👤 Chiun Huei Shieh
- 👤 John M. Branan, Jr.
- 👤 Ted W. Bush
- 👤 William L. Sifleet
- 👤 Miles Mace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:30
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C01; C01P; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
42 words
Carbon blacks characterized by having a CTAB≧(I 2 No.+5 m 2 /g) wherein 105 m 2 /g≧CTAB≧80 m 2 /g; a CDBP≧104 cc/100 g; a Tint of (0.5(CTAB)+70 m 2 /g>Tint>0.5(CTAB)+60 m 2 /g) and an ASTM aggregate volume≧480,000 (nm) 3 .
Claim 2
Dependent Claim
42 words
Carbon blacks characterized by having a CTAB≧(I 2 No.+5 m 2 /g) wherein 105 m 2 /g≧CTAB≧80 m 2 /g; a CDBP≧104 cc/100 g; a Tint of (0.5(CTAB)+70 m 2 /g>Tint>0.5(CTAB)+60 m 2 /g) and an ASTM aggregate volume≧480,000 (nm) 3 .
Claim 3
Dependent Claim
14 words
The carbon black of claim 1 additionally characterized by 120 cc/100 g≧CDBP≧104 cc/100 g.
Claim 4
Dependent Claim
18 words
The carbon black of claim 1 additionally characterized by 600,000 (nm) 3 ≧ASTM aggregate volume≧500,000 (nm) 3 .
Claim 5
Dependent Claim
18 words
The carbon black of claim 2 additionally characterized by 600,000 (nm) 3 ≧ASTM aggregate volume≧500,000 (nm) 3 .
Claim 6
Dependent Claim
61 words
A rubber composition comprising about 100 parts, by weight, of a rubber and from about 10 to about 250 parts, by weight, of a carbon black having a CTAB≧(I 2 No.+5 m 2 /g) wherein 105 m 2 /g≧CTAB≧80 m 2 /g; a CDBP≧104 cc/100 g; a Tint of (0.5(CTAB)+70 m 2 /g>Tint>0.5(CTAB)+60 and an ASTM aggregate volume≧480,000 (nm) 3 .
Claim 7
Dependent Claim
61 words
A rubber composition comprising about 100 parts, by weight, of a rubber and from about 10 to about 250 parts, by weight, of a carbon black having a CTAB≧(I 2 No.+5 m 2 /g) wherein 105 m 2 /g≧CTAB≧80 m 2 /g; a CDBP≧104 cc/100 g; a Tint of (0.5(CTAB)+70 m 2 /g>Tint>0.5(CTAB)+60 and an ASTM aggregate volume≧480,000 (nm) 3 .
Claim 8
Dependent Claim
17 words
The rubber composition of claim 5 wherein the carbon black is additionally characterized by 120 cc/100 g≧CDBP≧104
Claim 9
Dependent Claim
23 words
The rubber composition of claim 5 wherein the carbon black is additionally characterized by 600,000 (nm) 3 ≧ASTM aggregate volume≧500,000 (nm) 3 .
Claim 10
Dependent Claim
23 words
The rubber composition of claim 6 wherein the carbon black is additionally characterized by 600,000 (nm) 3 ≧ASTM aggregate volume≧500,000 (nm) 3 .
Claim 11
Dependent Claim
31 words
The rubber composition of claim 5 wherein the carbon black is present in an amount of from about 20 to about 100 parts by weight per 100 parts by weight rubber.
Claim 12
Dependent Claim
31 words
The rubber composition of claim 5 wherein the carbon black is present in an amount of from about 40 to about 80 parts by weight per 100 parts by weight rubber.
References Cited (Backward Citations)
US4540560A
Cited
US4908401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |