Patent US3341491A successfully refreshed from Google Patents.
US3341491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanized epihalohydrin polymers
Assignee: Hercules LLC
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Filing: 1966-05-04
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Granted: 1967-09-12
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Anderson E Robinson
- 👤 William D Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:19
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08L71/03; C08K; C08K13/00; C08K13/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
A CROSS-LINKED POLYMER OF AN EPIHALOHYDRIN PREPARED BY HEATING A POLYMER OF AN EPIHALOHYDRIN IN THE PRESENCE OF A CROSS-LINKING FORMULATION CONSISTING ESSENTIALLY OF FROM ABOUT 2% TO ABOUT 20% BY WEIGHT OF AT LEAST ONE METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF SALTS OF AROMATIC CARBOXYLIC ACIDS, SALTS OF SATURATED ALIPHATIC CARBOXYLIC ACIDS, SALTS OF CARBONIC ACID, SALTS OF PHOSPHOROUS ACID, SALTS OF SILICIC ACID AND OXIDES OF BERYLLIUM, MAGESIUM, CALCIUM, STRONTIUM, BARIUM AND THE METALS OF GROUPS IIB, AND IVA OF THE PERIODIC TABLE AND FROM ABOUT 0.2% TO ABOUT 10% BY WEIGHT OF AT LEAST ONE OTHER AGENT SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOIMIDAZOLINES AND 2-MERCAPTOPYRIMIDNES, SAID EPIHALOHYDRIN POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 40,000 AND BEING SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF EPIHALOHYDRINS AND COPOLYMERS OF AN EPIHALOHYDRIN WITH AT LEAST ONE OTHER EPOXIDE.
Claim 2
Dependent Claim
145 words
A CROSS-LINKED POLYMER OF AN EPIHALOHYDRIN PREPARED BY HEATING A POLYMER OF AN EPIHALOHYDRIN IN THE PRESENCE OF A CROSS-LINKING FORMULATION CONSISTING ESSENTIALLY OF FROM ABOUT 2% TO ABOUT 20% BY WEIGHT OF AT LEAST ONE METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF SALTS OF AROMATIC CARBOXYLIC ACIDS, SALTS OF SATURATED ALIPHATIC CARBOXYLIC ACIDS, SALTS OF CARBONIC ACID, SALTS OF PHOSPHOROUS ACID, SALTS OF SILICIC ACID AND OXIDES OF BERYLLIUM, MAGESIUM, CALCIUM, STRONTIUM, BARIUM AND THE METALS OF GROUPS IIB, AND IVA OF THE PERIODIC TABLE AND FROM ABOUT 0.2% TO ABOUT 10% BY WEIGHT OF AT LEAST ONE OTHER AGENT SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOIMIDAZOLINES AND 2-MERCAPTOPYRIMIDNES, SAID EPIHALOHYDRIN POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 40,000 AND BEING SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF EPIHALOHYDRINS AND COPOLYMERS OF AN EPIHALOHYDRIN WITH AT LEAST ONE OTHER EPOXIDE.
Claim 3
Dependent Claim
11 words
THE COMPOSITION OF CLAIM 1 WHEREIN THE EPIHALOHYDRIN POLYMER IS POLYEPICHLOROHYDRIN.
Claim 4
Dependent Claim
175 words
THE COMPOSITION OF CLAIM 2 WHEREIN SAID POLYEPICHLOROHYDRIN WAS CROSS-LINKED BY HEATING IN THE PRESENCE OF 2-MERCATOIMIDAZOLINE AND RED LEAD. 9. A CROSS-LINKED POLYMER OF AN EPIHALOHYDRIN PREPARED BY HEATING A POLYMER OF AN EPIHALOHYDRIN IN THE PRESENCE OF (1) FROM ABOUT 0.5% TO ABOUT 20% BY WEIGHT OF A STABILIZER COMPRISING PENTAERYTHRITOL, AND (2) A CROSS-LINKING FORMULATIN CONSISTING ESSENTIALLY OF FROM ABOUT 2% TO ABOUT 20% BY WEIGHT OF AT LEAST ONE METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF SALTS OF AROMATIC CARBOXYLIC ACIDS, SALTS OF SATURATED ALIPHATIC CARBOXYLIC ACIDS, SALTS OF CARBONIC ACID, SALTS OF PHOSPHOROUS ACID, SALTS OF SILICIC ACID AND OXIDES OF BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, BARIUM, ZINC, CADMIUM,MERCURY GERMANIUM, AND TIN AND FROM ABOUT 0.2% TO ABOUT 10% BY WEIGHT OF AT LEAST ONE OTHER AGENT SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOIMIDAZOLINES AND 2MERCAPTOPYRIMIDINES SAID EPIHALOBYDRIN POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 40,000 AND BEING SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF EPIHALOHYDRINS AND COPOLYMERS OF AN EPIHALOHYDRIN WITH AT LEAST ONE OTHER EPOXIDE.
References Cited (Backward Citations)
US3239486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |