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US4348233A
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Plasticized sulfur composition
Assignee: Chevron USA Inc
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Filing: 1981-04-17
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Granted: 1982-09-07
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Expires: 2001-04-17
Abstract
Abstract A plasticized sulfur composition having improved flame retardancy and crazing resistance, comprising at least 50% by weight sulfur, a sulfur plasticizer, decabromodiphenyl oxide and an inorganic filler. Preferably, the composition also contains dicyclopentadiene.
Inventors
- 👤 Milutin Simic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:19
CPC Classifications
C; C09; C09D; C09D1/00; C04; C04B; C04B28/00; C04B28/36; C09K; C09K21/00; C09K21/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
42 words
A plasticized sulfur composition comprising at least 50% by weight sulfur, from about 0.05% to about 25% by weight sulfur plasticizer, from about 1.0% to about 40% by weight inorganic filler, and from about 0.1% to about 10% by weight decabromodiphenyl oxide.
Claim 2
Dependent Claim
42 words
A plasticized sulfur composition comprising at least 50% by weight sulfur, from about 0.05% to about 25% by weight sulfur plasticizer, from about 1.0% to about 40% by weight inorganic filler, and from about 0.1% to about 10% by weight decabromodiphenyl oxide.
Claim 3
Dependent Claim
47 words
A composition according to claim 1, comprising from about 60% to about 98% by weight sulfur, from about 0.2% to about 5.0% by weight sulfur plasticizer, from about 5% to about 30% by weight inorganic filler, and from about 0.25% to about 6.0% by weight decabromodiphenyl oxide.
Claim 4
Dependent Claim
47 words
A composition according to claim 2, comprising from about 70% to about 97% by weight sulfur, from about 1.0% to about 4.0% by weight sulfur plasticizer, from about 10% to about 20% by weight inorganic filler, and from about 0.5% to about 4.0% by weight decabromodiphenyl oxide.
Claim 5
Dependent Claim
16 words
A composition according to claim 1, further comprising about 0.01% to about 2.0% by weight dicyclopentadiene.
Claim 6
Dependent Claim
16 words
A composition according to claim 2, further comprising about 0.05% to about 1.5% by weight dicyclopentadiene.
Claim 7
Dependent Claim
16 words
A composition according to claim 3, further comprising about 0.1% to about 0.5% by weight dicyclopentadiene.
Claim 8
Dependent Claim
24 words
A composition according to claim 1, wherein the sulfur plasticizer is selected from the group consisting of aliphatic polysulfides, aromatic polysulfides, and mixtures thereof.
Claim 9
Dependent Claim
12 words
A composition according to claim 1, wherein the inorganic filler is mica.
Claim 10
Dependent Claim
70 words
A plasticized sulfur composition comprising about 80% by weight sulfur, about 2.0% by weight of an aromatic polysulfide formed by reacting one mol of phenol with at least two mols of sulfur, about 1.0% by weight of a linear aliphatic polysulfide having the recurring unit: --S.sub.x CH.sub.2 CH.sub.2 OCH.sub.2 OCH.sub.2 CH.sub.2 S.sub.x --, about 18% by weight mica, about 0.5% by weight decabromodiphenyl oxide, and about 0.1% by weight dicyclopentadiene.
Claim 11
Dependent Claim
70 words
A plasticized sulfur composition comprising about 80% by weight sulfur, about 2.0% by weight of an aromatic polysulfide formed by reacting one mol of phenol with at least two mols of sulfur, about 1.0% by weight of a linear aliphatic polysulfide having the recurring unit: --S.sub.x CH.sub.2 CH.sub.2 OCH.sub.2 OCH.sub.2 CH.sub.2 S.sub.x --, about 18% by weight mica, about 0.5% by weight decabromodiphenyl oxide, and about 0.1% by weight dicyclopentadiene.
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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |