US3030346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of block copolymers
Assignee: Phillips Petroleum Co
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Filing: 1960-03-18
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Granted: 1962-04-17
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Expires: 1980-03-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard N Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F297/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN THE PREPARATION OF A BLOCK COPOLYMER FORMED OF A COPOLYMER BLOCK AND A HOMOPOLYMER BLOCK BY POLYMERIZING A MIXTURE OF (1) A CONJUGATED DINES SELECTED FROM THE GROUP CONSISTING OF 1,3-BUTADIENE, ISOPRENE, AND PIPERYLENE, AND (2) A VINYL-SUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTRACHED TO A NUCLEAR CARBON ATOM WITH A COMPOUND OF THE FORMULA R(LI)X, WHEREIN R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC, AND AROMATIC RADICALS AND X IS AN INTEGER FROM 1 TO 4, INCLUSIVE THE PRESENCE OF A HYDROCARBON DILUENT, THE IMPROVEMENT COMPRISING EFFECTING THE POLYMERIZATION AT A TEMPERATURE IN THE RANGE OF 70 TO 100*F. FOR A PERIOD OF TIME SUFFIDIENE AND NO MORE THAN A PART OF THE VINYL-SUBSTITUTED AROMATIC HYDROCARBON AND, SUBSEQUENTLY, AT A TEMPERATTURE IN THE RANGE OF 115 TO 140*F. FOR A SECOND PERIOD OF TIME SUFFICIENT TO POLYMERIZE SUBSTANTIALLY ALL OF THE REMAINING MONOMERS.
Claim 2
Dependent Claim
153 words
IN THE PREPARATION OF A BLOCK COPOLYMER FORMED OF A COPOLYMER BLOCK AND A HOMOPOLYMER BLOCK BY POLYMERIZING A MIXTURE OF (1) A CONJUGATED DINES SELECTED FROM THE GROUP CONSISTING OF 1,3-BUTADIENE, ISOPRENE, AND PIPERYLENE, AND (2) A VINYL-SUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTRACHED TO A NUCLEAR CARBON ATOM WITH A COMPOUND OF THE FORMULA R(LI)X, WHEREIN R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC, AND AROMATIC RADICALS AND X IS AN INTEGER FROM 1 TO 4, INCLUSIVE THE PRESENCE OF A HYDROCARBON DILUENT, THE IMPROVEMENT COMPRISING EFFECTING THE POLYMERIZATION AT A TEMPERATURE IN THE RANGE OF 70 TO 100*F. FOR A PERIOD OF TIME SUFFIDIENE AND NO MORE THAN A PART OF THE VINYL-SUBSTITUTED AROMATIC HYDROCARBON AND, SUBSEQUENTLY, AT A TEMPERATTURE IN THE RANGE OF 115 TO 140*F. FOR A SECOND PERIOD OF TIME SUFFICIENT TO POLYMERIZE SUBSTANTIALLY ALL OF THE REMAINING MONOMERS.
References Cited (Backward Citations)
CA582947A
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 |