Patent US3245929A successfully refreshed from Google Patents.
US3245929A
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Method of compounding cis-polybutadiene for improved mill handling and product thereof
Assignee: Phillips Petroleum Co
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Filing: 1959-02-16
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Granted: 1966-04-12
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Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Henry E Railsback
- 👤 Jr Nelson A Stumpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:39
CPC Classifications
C; C08; C08L; C08L9/00; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF IMPROVING THE MILLING CHARACTERISTICS OF CIS-POLYBUTADIENE CONTAINING AT LEAST 75 PERCENT CIS-1,4 CONFIGURATION AND HAVING A MOONEY VALUE (ML-4) OF AT LEAST 25 WHICH COMPRISES COMPOUNDING 100 PARTS BY WEIGHT OF SAID CIS-POLYBUTADIENE WITH 60 TO 100 PARTS BY WEIGHT OF LIQUID PLASTICIZER FOR RUBBER OF WHICH, FROM 5 TO 15 PARTS WEIGHT ARE PINE TAR, AND 0 TO 0.8 PART BY WEIGHT OF STEARIC ACID, AND THEREAFTER MILLING THE THUS COMPOUND STOCK ON A ROLL MILL.
Claim 2
Independent Claim
80 words
A METHOD OF IMPROVING THE MILLING CHARACTERISTICS OF CIS-POLYBUTADIENE CONTAINING AT LEAST 75 PERCENT CIS-1,4 CONFIGURATION AND HAVING A MOONEY VALUE (ML-4) OF AT LEAST 25 WHICH COMPRISES COMPOUNDING 100 PARTS BY WEIGHT OF SAID CIS-POLYBUTADIENE WITH 60 TO 100 PARTS BY WEIGHT OF LIQUID PLASTICIZER FOR RUBBER OF WHICH, FROM 5 TO 15 PARTS WEIGHT ARE PINE TAR, AND 0 TO 0.8 PART BY WEIGHT OF STEARIC ACID, AND THEREAFTER MILLING THE THUS COMPOUND STOCK ON A ROLL MILL.
References Cited (Backward Citations)
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |