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Patent US4022828A successfully refreshed from Google Patents.
US4022828A
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Vulcanization inhibiting compounds
Assignee: Universal Oil Products Co
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Filing: 1974-03-25
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Granted: 1977-05-10
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Expires: 1994-03-25
Abstract
Abstract Novel compounds for inhibiting the premature vulcanization of vulcanizable rubber formulations comprising bis-(sulfonamido)-sulfides or polysulfides having the formula: <IMAGE> where R and R' are independently selected from the group consisting of aryl, alkyl, cycloalkyl or substituted derivatives thereof and x is an integer of from 1 to 3. These novel compounds may be exemplified by bis-(N-methyl-p-toluenesulfonamido)-disulfide.
Inventors
- 👤 Robert J. Arnold
- 👤 Marion J. Gattuso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/435
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A compound having the formula: ##STR7## in which R and R' are independently selected from the group consisting of alkyl of from 1 to about 6 carbon atoms, cycloalkyl having from 3 to about 8 carbon atoms in the ring, phenyl and tolyl radicals, and x is an integer of from 1 to 3.
Claim 2
Dependent Claim
54 words
A compound having the formula: ##STR7## in which R and R' are independently selected from the group consisting of alkyl of from 1 to about 6 carbon atoms, cycloalkyl having from 3 to about 8 carbon atoms in the ring, phenyl and tolyl radicals, and x is an integer of from 1 to 3.
Claim 3
Dependent Claim
7 words
The compound of claim 1 being bis-(N-methyl-p-toluenesulfonamido)-sulfide.
Claim 4
Dependent Claim
7 words
The compound of claim 1 being bis-(N-cyclohexyl-p-toluenesulfonamido)-sulfide.
References Cited (Backward Citations)
US3671503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |