US5168012A
Expired / Lapsed
US
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Carbon black beads with latex additive
Assignee: Columbian Chemicals Co
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Filing: 1991-05-06
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Granted: 1992-12-01
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Expires: 2011-05-06
Abstract
Abstract Carbon black beads are provided which generally comprise carbon black powder and an elastomer such as styrene butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, or the like, in an amount between 0.5 and 5.0% by weight of the beaded carbon black. The carbon black beads are made by beading the carbon black powder with latex. The latex treated carbon black is readily handleable in bulk form, easily dispersible in elastomeric compositions, and imparts improved dynamic properties to elastomeric compositions.
Inventors
- 👤 James M. Watson
- 👤 Rodney L. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:51
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08K; C08K9/00; C08K9/08; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2004/00; C01P2004/51; C01P2006/00; C01P2006/21; C08J2321/00; C08J2421/00; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black comprising: carbon black powder, the carbon black powder comprising individual aggregates of carbon black particles; and an elastomer present in an amount between 0.5, inclusive, and 3%, exclusive, by weight of the beaded carbon black, the individual aggregates of carbon black particles associated with the elastomer so that the elastomer is distributed substantially throughout the beaded carbon black, the elastomer being present in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 2
Dependent Claim
101 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black comprising: carbon black powder, the carbon black powder comprising individual aggregates of carbon black particles; and an elastomer present in an amount between 0.5, inclusive, and 3%, exclusive, by weight of the beaded carbon black, the individual aggregates of carbon black particles associated with the elastomer so that the elastomer is distributed substantially throughout the beaded carbon black, the elastomer being present in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 3
Dependent Claim
29 words
Beaded carbon black as in claim 1, wherein the elastomer is selected from the group consisting of styrene butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, and ethylene-propylene terpolymer.
Claim 4
Dependent Claim
101 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black comprising: carbon black powder, the carbon black powder comprising individual aggregates of carbon black particles; and an elastomer present in an amount from about 1 to about 3% by weight of the beaded carbon black, the individual aggregates of carbon black particles associated with the elastomer so that the elastomer is distributed substantially throughout the beaded carbon black, the elastomer being present in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 5
Dependent Claim
101 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black comprising: carbon black powder, the carbon black powder comprising individual aggregates of carbon black particles; and an elastomer present in an amount from about 1 to about 3% by weight of the beaded carbon black, the individual aggregates of carbon black particles associated with the elastomer so that the elastomer is distributed substantially throughout the beaded carbon black, the elastomer being present in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 6
Dependent Claim
29 words
Beaded carbon black as in claim 3, wherein the elastomer is selected from the group consisting of styrene butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, and ethylene-propylene terpolymer.
Claim 7
Dependent Claim
150 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black prepared by a process comprising the steps of: adding a latex comprising an elastomer to a carbon black powder comprising individual aggregates of carbon black particles, the latex being added to the carbon black powder in an amount sufficient to form beaded carbon black comprising elastomer in an amount between 0.5, inclusive, and 3%, exclusive by weight of the beaded carbon black; and beading the carbon black powder and the latex in a carbon black beading apparatus whereby the individual aggregates of carbon black particles become associated with the latex and the elastomer is distributed substantially throughout the resulting beaded carbon black, the latex being added to the carbon black powder in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 8
Dependent Claim
150 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black prepared by a process comprising the steps of: adding a latex comprising an elastomer to a carbon black powder comprising individual aggregates of carbon black particles, the latex being added to the carbon black powder in an amount sufficient to form beaded carbon black comprising elastomer in an amount between 0.5, inclusive, and 3%, exclusive by weight of the beaded carbon black; and beading the carbon black powder and the latex in a carbon black beading apparatus whereby the individual aggregates of carbon black particles become associated with the latex and the elastomer is distributed substantially throughout the resulting beaded carbon black, the latex being added to the carbon black powder in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 9
Dependent Claim
42 words
Beaded carbon black prepared by a process as in claim 5, wherein the elastomer in the latex added to the carbon black powder is selected from the group consisting of styrene butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, and ethylene-propylene terpolymer.
Claim 10
Dependent Claim
33 words
Beaded carbon black prepared by a process as in claim 5, further comprising the step of drying the beaded carbon black at a temperature sufficiently low so as not to decompose the elastomer.
Claim 11
Dependent Claim
150 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black prepared by a process comprising the steps of: adding a latex comprising an elastomer to a carbon black powder comprising individual aggregates of carbon black particles, the latex being added to the carbon black powder in an amount sufficient to form beaded carbon black comprising elastomer in an amount from about 1 to about 3% by weight of the beaded carbon black; and beading the carbon black powder and the latex in a carbon black beading apparatus whereby the individual aggregates of carbon black particles become associated with the latex and the elastomer is distributed substantially throughout the resulting beaded carbon black, the latex being added to the carbon black powder in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 12
Dependent Claim
150 words
Beaded carbon black for use in reinforcing elastomeric compositions, the beaded carbon black prepared by a process comprising the steps of: adding a latex comprising an elastomer to a carbon black powder comprising individual aggregates of carbon black particles, the latex being added to the carbon black powder in an amount sufficient to form beaded carbon black comprising elastomer in an amount from about 1 to about 3% by weight of the beaded carbon black; and beading the carbon black powder and the latex in a carbon black beading apparatus whereby the individual aggregates of carbon black particles become associated with the latex and the elastomer is distributed substantially throughout the resulting beaded carbon black, the latex being added to the carbon black powder in an amount sufficient to provide improved dispersibility of the carbon black powder in the elastomeric compositions and impart improved dynamic properties to the elastomeric compositions.
Claim 13
Dependent Claim
42 words
Beaded carbon black prepared by a process as in claim 8, wherein the elastomer in the latex added to the carbon black powder is selected from the group consisting of styrene butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, and ethylene-propylene terpolymer.
Claim 14
Dependent Claim
33 words
Beaded carbon black prepared by a process as in claim 8, further comprising the step of drying the beaded carbon black at a temperature sufficiently low so as not to decompose the elastomer.
References Cited (Backward Citations)
US2457962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |