Patent US3359221A successfully refreshed from Google Patents.
US3359221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur-curable monoolefin copolymers containing polyunsaturated rubber
Assignee: EIDP Inc
•
Filing: 1962-11-15
•
Granted: 1967-12-19
•
Expires: 1982-11-15
Abstract
No abstract record available.
Inventors
- 👤 Schoenbeck Melvin Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:00
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26; C08K3/34; C08K3/346; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08L53/00; C08L53/02; C08L7/00; C08L9/00; C08L91/00; C08L2312/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A SULFUR-CURABLE, FILLER-LOADED ELASTOMERIC COMPOSITION COMPRISING (1) A COPOLYMER OF ETHYLENE, PROPYLENE AND AT LEAST ONE NON-CONJUGATED DIENE OR FROM ABOUT 5 TO 22 CARBON ATOMS, UNITS OF SAID DIENE CONSTITUTING UP TO ABOUT 10 WEIGHT PRCENT OF SAID COPOLYMER, (II) FROM ABOUT 20 TO 300 PARTS, PER 100 PARTS OF COPOLYMER, OF A FILLER COMPOUND SELECTED FROM THE GROUP CONSISTING OF CARBON BLACK AND KAOLIN CLAY, (III) UP TO ABOUT 10 PARTS, PER 100 PARTS OF COPOLYMER, OF A POLYUNSATURATED RUBBER PROMOTER COMPOSITION SELECTED FROM THE GROUP CONSISTING OF STYRENE-BUTADIENE RUBBER, NATURAL RUBBER, CIS-1,4-POLYBUTADIENE, AND CIS-POLYISOPRENE, SAID PROMOTER COMPOSITIONS HAVING AT LEAST ABOUT 10 GRAM-MOLES OF SULFUR-REACTABLE CARBON-TO-CARBON DOUBLE BONDS PR KILOGRAM OF SAID PROMOTER WITH THE MOLE RATIO OF TOTAL SULFUR REACTABLE CARBON-TO-CARBON DOUBLE BONDS IN SAID PROMOTER TO THE CARBON-TO-CARBON DOUBLE BONDS IN SAID COPOLYMER (I) BEING AT LEAST 0.05:1; AND (IV) A SULFUR-CURING SYSTEM IN AMOUNTS CONTAINING SUFFICIENT SULFUR TO REACT WITH SAID COPOLYMER AND SAID PROMOTER COMPOUND.
Claim 2
Dependent Claim
162 words
A SULFUR-CURABLE, FILLER-LOADED ELASTOMERIC COMPOSITION COMPRISING (1) A COPOLYMER OF ETHYLENE, PROPYLENE AND AT LEAST ONE NON-CONJUGATED DIENE OR FROM ABOUT 5 TO 22 CARBON ATOMS, UNITS OF SAID DIENE CONSTITUTING UP TO ABOUT 10 WEIGHT PRCENT OF SAID COPOLYMER, (II) FROM ABOUT 20 TO 300 PARTS, PER 100 PARTS OF COPOLYMER, OF A FILLER COMPOUND SELECTED FROM THE GROUP CONSISTING OF CARBON BLACK AND KAOLIN CLAY, (III) UP TO ABOUT 10 PARTS, PER 100 PARTS OF COPOLYMER, OF A POLYUNSATURATED RUBBER PROMOTER COMPOSITION SELECTED FROM THE GROUP CONSISTING OF STYRENE-BUTADIENE RUBBER, NATURAL RUBBER, CIS-1,4-POLYBUTADIENE, AND CIS-POLYISOPRENE, SAID PROMOTER COMPOSITIONS HAVING AT LEAST ABOUT 10 GRAM-MOLES OF SULFUR-REACTABLE CARBON-TO-CARBON DOUBLE BONDS PR KILOGRAM OF SAID PROMOTER WITH THE MOLE RATIO OF TOTAL SULFUR REACTABLE CARBON-TO-CARBON DOUBLE BONDS IN SAID PROMOTER TO THE CARBON-TO-CARBON DOUBLE BONDS IN SAID COPOLYMER (I) BEING AT LEAST 0.05:1; AND (IV) A SULFUR-CURING SYSTEM IN AMOUNTS CONTAINING SUFFICIENT SULFUR TO REACT WITH SAID COPOLYMER AND SAID PROMOTER COMPOUND.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |