US3030330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmentation of solid olefin polymers by dry blending cellular form thereof with carbon black
Assignee: Phillips Petroleum Co
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Filing: 1958-04-18
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Granted: 1962-04-17
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Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 Martin R Cines
- 👤 Edward J Kosinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:39
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/203; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF INCORPORATING CARBON BLACK INTO A SOLID POLYMER OF MONO-OLEFINS HAVING FROM 2 TO 8 CARBON ATOMS PER MOLECULE WHICH COMPRISES MIXING SAID CARBON BLACK IN ITS DRY, PARTICULATE STATE WITH PARTICLES OF SAID POLYMER TO FORM A DRY, GRANULAR MIXTURE, SAID POLYMER HAVING BEEN PRECIPITATED FROM SOLUTION TO PLACE IT IN AN EXPANDED FORM HAVING VOIDS WITHIN THES PARTICLE AND HAVINGA BULK DENSITY OF FROM ABOUT , TO 22 POUNDS PER CUBIC FOOT, AND SUBJECTING SAID MIXTURE TO MECHANICAL WORKING WHICH PRODUCES HIGH SHEAR WITHIN THE POLYMER, FUSING SAID POLYMER, AND EXTRUDING A UNIFORM PRODUCT.
Claim 2
Independent Claim
98 words
A METHOD OF INCORPORATING CARBON BLACK INTO A SOLID POLYMER OF MONO-OLEFINS HAVING FROM 2 TO 8 CARBON ATOMS PER MOLECULE WHICH COMPRISES MIXING SAID CARBON BLACK IN ITS DRY, PARTICULATE STATE WITH PARTICLES OF SAID POLYMER TO FORM A DRY, GRANULAR MIXTURE, SAID POLYMER HAVING BEEN PRECIPITATED FROM SOLUTION TO PLACE IT IN AN EXPANDED FORM HAVING VOIDS WITHIN THES PARTICLE AND HAVINGA BULK DENSITY OF FROM ABOUT , TO 22 POUNDS PER CUBIC FOOT, AND SUBJECTING SAID MIXTURE TO MECHANICAL WORKING WHICH PRODUCES HIGH SHEAR WITHIN THE POLYMER, FUSING SAID POLYMER, AND EXTRUDING A UNIFORM PRODUCT.
References Cited (Backward Citations)
US2582327A
Cited
US2770609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |