US5093407A
Expired / Lapsed
US
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Carbon blacks and rubber compositions containing the carbon blacks
Assignee: Cabot Corp
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Filing: 1990-09-10
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Granted: 1992-03-03
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Expires: 2010-09-10
Abstract
Abstract Carbon blacks having a N 2 SA of from at least about 150 m 2 /g to about 180 m 2 /g, a DBP of about 125 cc/100 g or less, a Dmode of 70 nm or less, a N 2 SA/I 2 No. ratio of 0.85 to 0.98 and a ΔDBP less than 210 cc/100 g which, when incorporated into rubber compositions, impart increased abrasion resistance, heterogenous abrasion resistance and grip performance properties. Also disclosed are rubber composition incorporating the novel carbon blacks.
Inventors
- 👤 Yasumi Komai
- 👤 Mizuo Soeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
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; C01P2006/19
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
Carbon blacks characterized by having a N 2 SA of from 150 m 2 /g to 180 m 2 /g, a DBP of 125 cc/100 g or less, a Dmode of 70 nm or less, a N 2 SA/I 2 No. ratio of 0.85 to 0.98 and a ΔDBP less than 20 cc/100 g.
Claim 2
Dependent Claim
54 words
Carbon blacks characterized by having a N 2 SA of from 150 m 2 /g to 180 m 2 /g, a DBP of 125 cc/100 g or less, a Dmode of 70 nm or less, a N 2 SA/I 2 No. ratio of 0.85 to 0.98 and a ΔDBP less than 20 cc/100 g.
Claim 3
Dependent Claim
37 words
The carbon black of claim 1 wherein the DBP of the carbon black is 100-125 cc/100 g, the Dmode of the carbon black is 50-70 nm, and the ΔDBP of the carbon black is 10-20 cc/100 g.
Claim 4
Dependent Claim
76 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 N 2 SA of from 150 m 2 /g to 180 m 2 /g, a DBP of 125 cc/100 g or less, a Dmode of 70 nm or less, a N 2 SA/I 2 No. ratio of 0.85 to 0.98 and a ΔDBP less than 20 cc/100 g.
Claim 5
Dependent Claim
76 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 N 2 SA of from 150 m 2 /g to 180 m 2 /g, a DBP of 125 cc/100 g or less, a Dmode of 70 nm or less, a N 2 SA/I 2 No. ratio of 0.85 to 0.98 and a ΔDBP less than 20 cc/100 g.
Claim 6
Dependent Claim
37 words
The rubber composition of claim 3 wherein the DBP of the carbon black is 100-125 cc/100 g, the Dmode of the carbon black is 50-70 nm, and the ΔDBP of the carbon black is 10-20 cc/100 g.
References Cited (Backward Citations)
FR1355872A
Cited
US4246251A
Cited
DE3002555A1
Cited
US4477621A
Cited
JPS5947263A
Cited
US4500672A
Cited
JPS5971367A
Cited
US4548980A
Cited
GB2151604A
Cited
JPS6134072A
Cited
US4678830A
Cited
JPS62277446A
Cited
US4784695A
Cited
US4973463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |