Patent US2857351A successfully refreshed from Google Patents.
US2857351A
Expired / Lapsed
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Rubber-rosin-asphalt compositions and their preparation
Assignee: Phillips Petroleum Co
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Filing: 1954-06-14
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Granted: 1958-10-21
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Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 James H Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:42
CPC Classifications
C; C08; C08L; C08L95/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A METHOD FOR THE PRODUCTION OF A BITUMINOUS-SULFURVULCANIZABLE-RUBBER-ROSIN ACID COMPOSITION CONTAINING 1-30 WEIGHT PERCENT OF SAID RUBBER COMPRISING ADMIXING TOGETHER A FREE-FLOWING RUBBER-ROSIN ACID CRUMB AND A BITUMINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN ASPHALT AND A PITCH, SAID CRUMB HAVING BEEN FORMED BY THE EMULSION POLYMERIZATION OF AN UNSATURATED MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE TO FORM A LATEX OF A SULFUR VULCANIZABLE RUBBERY POLYMER, ADMIXING WITH SAID LATEX AN AMOUNT OF ROSIN SOAP EQUIVALENT TO FROM 25-200 PARTS BY WEIGHT OF ROSIN ACID PER 100 PARTS OF RUBBERY POLYMER IN SAID LATEX, SAID AMOUNT BEING EFFECTIVE TO PRODUCE A FREE-FLOWING CRUMB WHILE AGITATING THE RESULTING LATEX-ROSIN ADMIXTURE; CREAMING SAID LATEX, AND ACIDIFYING AND COAGULATING SAID LATEX, THUS OBTAINING A SLURRY CONTAINING A FREE-FLOWING COAGULUM AND MAINTAINING SAID SLURRY AT PH FROM 2-5 FROM A PERIOD OF TIME TO CONVERT ROSIN SOAP TO ROSIN ACID, AND SEPARATING THE COAGULUM FROM SAID SLURRY.
Claim 2
Independent Claim
155 words
A METHOD FOR THE PRODUCTION OF A BITUMINOUS-SULFURVULCANIZABLE-RUBBER-ROSIN ACID COMPOSITION CONTAINING 1-30 WEIGHT PERCENT OF SAID RUBBER COMPRISING ADMIXING TOGETHER A FREE-FLOWING RUBBER-ROSIN ACID CRUMB AND A BITUMINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF AN ASPHALT AND A PITCH, SAID CRUMB HAVING BEEN FORMED BY THE EMULSION POLYMERIZATION OF AN UNSATURATED MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE TO FORM A LATEX OF A SULFUR VULCANIZABLE RUBBERY POLYMER, ADMIXING WITH SAID LATEX AN AMOUNT OF ROSIN SOAP EQUIVALENT TO FROM 25-200 PARTS BY WEIGHT OF ROSIN ACID PER 100 PARTS OF RUBBERY POLYMER IN SAID LATEX, SAID AMOUNT BEING EFFECTIVE TO PRODUCE A FREE-FLOWING CRUMB WHILE AGITATING THE RESULTING LATEX-ROSIN ADMIXTURE; CREAMING SAID LATEX, AND ACIDIFYING AND COAGULATING SAID LATEX, THUS OBTAINING A SLURRY CONTAINING A FREE-FLOWING COAGULUM AND MAINTAINING SAID SLURRY AT PH FROM 2-5 FROM A PERIOD OF TIME TO CONVERT ROSIN SOAP TO ROSIN ACID, AND SEPARATING THE COAGULUM FROM SAID SLURRY.
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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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |