Patent US4361900A successfully refreshed from Google Patents.
US2802811A
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Chloroprene stabilized with a mixture of zinc dimethyl dithiocarbamate and the zinc salt of mercaptobenzothiazole
Assignee: Vanderbilt Chemicals LLC
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Filing: 1953-11-02
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Granted: 1957-08-13
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Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 Albert A Somerville
- 👤 Wilbur S Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; C08K5/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN THE VULCANIZATION OF CHLOROPRENE RUBBER, THE STEP OF INCORPORATING INTO RUBBER A MIXTURE OF ZINC SALTS CONSISTING ESSENTIALLY OF ZINC DIMETHYL DITHIOCARBAMATE AND THE ZINC SALT OF 2-MERCAPTOBENZOTHIAZOLE IN A WEIGHT RATIO OF FROM 99:1 TO 90:10, THE AMOUNT OF SAID MIXTURE BEING SUFFICIENT OT IMPART RESISTANCE OF FUNGUS ATTACK TO THE CHLOROPRENE RUBBER WHEN VULCANIZED.
Claim 2
Dependent Claim
57 words
IN THE VULCANIZATION OF CHLOROPRENE RUBBER, THE STEP OF INCORPORATING INTO RUBBER A MIXTURE OF ZINC SALTS CONSISTING ESSENTIALLY OF ZINC DIMETHYL DITHIOCARBAMATE AND THE ZINC SALT OF 2-MERCAPTOBENZOTHIAZOLE IN A WEIGHT RATIO OF FROM 99:1 TO 90:10, THE AMOUNT OF SAID MIXTURE BEING SUFFICIENT OT IMPART RESISTANCE OF FUNGUS ATTACK TO THE CHLOROPRENE RUBBER WHEN VULCANIZED.
References Cited (Backward Citations)
US2243544A
Cited
US2414391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |