US3242154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing chloroprene using amorphous adsorbents
Assignee: Union Carbide Corp
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Filing: 1960-04-20
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Granted: 1966-03-22
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Expires: 1980-04-20
Abstract
No abstract record available.
Inventors
- 👤 Francis M O'connor
- 👤 Jr Tudor L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:54
CPC Classifications
C; C08; C08L; C08L11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A METHOD FOR THE RAPID CURING OF A NON-SULFURMODIFIED CHLOROPRENE POLYMER RUBBER WHICH COMPRISES PROVIDING A CURABLE NON-SULFUR-MODIFIED CHLOROPRENE POLYMER RUBBER FORMULATION; INCORPORATING THEREIN AN ACTIVATED AMORPHOUS ADSORBENT CONTAINING IN THE ADSORBED STATE A CURING ACCELERATOR, SAID ADSORBENT HAVING PORES OF LARGE ENOUGH CROSS-SECTIONAL DIMENSIONS TO ACCEPT AT LEAST A PORTION OF SAID CURRING ACCELERATOR MOLECULE INTO THE SORPTION AREA; PROCESSING SAID CHLOROPRENE POLYMER FORMULATION AT TEMPERATURES BELOW THE CURING TEMPERATURES OF SAID CHLOROPRENE POLYMER FORMULATION; HEATING SAID PROCESSED CHLOROPRENE POLYMER FORMULATION TO TEMPERATURES UP TO THE CURING TEMPERATURES OF SAID CHLOROPRENE POLYMER FORMULATION WHEREBY SAID CURING ACCELERATOR IS RELEASED FROM SAID ADSORBENT, SAID CURING ACCELERATOR BEING RELEASABLE IN AT LEAST ONE ACTIVE FORM FROM SAID ADSORBENT BY HEATING SAID CHLOROPRENE POLYMER FORMULATION TO SAID CURING TEMPERATURES, THE RATE OF CURING OF SAID CHLOROPRENE POLYMER FORMULATION BEING INCREASED, THEREBY.
Claim 2
Independent Claim
139 words
A METHOD FOR THE RAPID CURING OF A NON-SULFURMODIFIED CHLOROPRENE POLYMER RUBBER WHICH COMPRISES PROVIDING A CURABLE NON-SULFUR-MODIFIED CHLOROPRENE POLYMER RUBBER FORMULATION; INCORPORATING THEREIN AN ACTIVATED AMORPHOUS ADSORBENT CONTAINING IN THE ADSORBED STATE A CURING ACCELERATOR, SAID ADSORBENT HAVING PORES OF LARGE ENOUGH CROSS-SECTIONAL DIMENSIONS TO ACCEPT AT LEAST A PORTION OF SAID CURRING ACCELERATOR MOLECULE INTO THE SORPTION AREA; PROCESSING SAID CHLOROPRENE POLYMER FORMULATION AT TEMPERATURES BELOW THE CURING TEMPERATURES OF SAID CHLOROPRENE POLYMER FORMULATION; HEATING SAID PROCESSED CHLOROPRENE POLYMER FORMULATION TO TEMPERATURES UP TO THE CURING TEMPERATURES OF SAID CHLOROPRENE POLYMER FORMULATION WHEREBY SAID CURING ACCELERATOR IS RELEASED FROM SAID ADSORBENT, SAID CURING ACCELERATOR BEING RELEASABLE IN AT LEAST ONE ACTIVE FORM FROM SAID ADSORBENT BY HEATING SAID CHLOROPRENE POLYMER FORMULATION TO SAID CURING TEMPERATURES, THE RATE OF CURING OF SAID CHLOROPRENE POLYMER FORMULATION BEING INCREASED, THEREBY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |