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US4032469A
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Pelleted sulfur compositions
Assignee: Kali Chemie AG
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Filing: 1976-05-25
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Granted: 1977-06-28
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Expires: 1996-05-25
Abstract
Abstract Pelleted sulfur compositions consisting essentially of particles of sulfur which include a substantial proportion of carbon-disulfide-insoluble sulfur particles together with a binder consisting essentially of a plasticizing or softening oil containing an anionic or nonionic surfactant in an amount equivalent to between 0.5 and 10% of the weight of the pelleted composition, the pelleted composition containing an amount of the plasticizing oil equivalent to between 10 and 60% of its weight. The pelleted composition is free-flowing, storable, and disperses homogeneously when distributed in rubber mixtures by milling on heated compounding rolls.
Inventors
- 👤 Henning Bartzsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:57
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/0243; C01B17/0248; B; B01; B01J; B01J2/00; C08; C08K; C08K3/00; C08K3/02; C08K3/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
71 words
A pelleted sulfur composition consisting essentially of particles of sulfur which include a substantial proportion of carbon-disulfide-insoluble sulfur particles together with a binder consisting essentially of a rubber plasticizing oil containing an amount equivalent to between 0.5 and 10% of the weight of the pelleted composition of an anionic or nonionic surfactant, the amount of the plasticizing oil being equivalent to between 10 and 60% by weight of the pelleted composition.
Claim 2
Dependent Claim
71 words
A pelleted sulfur composition consisting essentially of particles of sulfur which include a substantial proportion of carbon-disulfide-insoluble sulfur particles together with a binder consisting essentially of a rubber plasticizing oil containing an amount equivalent to between 0.5 and 10% of the weight of the pelleted composition of an anionic or nonionic surfactant, the amount of the plasticizing oil being equivalent to between 10 and 60% by weight of the pelleted composition.
Claim 3
Dependent Claim
31 words
A pelleted sulfur composition as defined in claim 1 in which the surfactant is an anionic surfactant of the group consisting of alkylarylsulfonates and fatty acid sulfonates and their water-soluble salts.
Claim 4
Dependent Claim
61 words
A pelleted sulfur composition as defined in claim 1 in which the amount of the binder in percent by weight of the composition is slightly less than one-half the oil-absorption number of the sulfur particles in the composition, the said oil-absorption number being the amount of the oil binder in milliliters that is absorbed by 100 grams of the sulfur particles.
Claim 5
Dependent Claim
24 words
A pelleted sulfur composition as defined in claim 1 in which at least 30% by weight of the sulfur particles are carbon-disulfide-insoluble sulfur particles.
Claim 6
Dependent Claim
24 words
A pelleted sulfur composition as defined in claim 1 in which at least 90% by weight of the sulfur particles are carbon-disulfide-insoluble sulfur particles.
Claim 7
Dependent Claim
24 words
A pelleted sulfur composition as defined in claim 1 in which the plasticizing oil is a process oil that is adapted for plasticizing rubber.
Claim 8
Dependent Claim
19 words
A pelleted sulfur composition as defined in claim 1 in which the plasticizing oil is a naphthene-base petroleum oil.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |