Patent US2844567A successfully refreshed from Google Patents.
US2844567A
Expired / Lapsed
US
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Viscous polycarboxylate adducts from butadiene-type rubbers
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-04-27
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Granted: 1958-07-22
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Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Dazzi Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:47
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A VISCOUS ADDUCT OF (1) A RUBBER-LIKE SYNTHETIC PRODUCT SELECTED FROM THE CLASS CONSISTING OF POLYMERIZATION PRODUCTS OF ALIPHATIC, DIENIC HYDROCARBONS OF FROM 4 TO 8 CARBON ATOMS AND COPOLYMERIZATION PRODUCTS OF SAID HYDROCARBONS WITH UNSATURATED, ORGANIC SUBSTANCES CAPABLE OF COPOLYMERIZING THEREWITH WITH (2) AN TRANSESTER HAVING THE FORMULA
Claim 2
Dependent Claim
49 words
A VISCOUS ADDUCT OF (1) A RUBBER-LIKE SYNTHETIC PRODUCT SELECTED FROM THE CLASS CONSISTING OF POLYMERIZATION PRODUCTS OF ALIPHATIC, DIENIC HYDROCARBONS OF FROM 4 TO 8 CARBON ATOMS AND COPOLYMERIZATION PRODUCTS OF SAID HYDROCARBONS WITH UNSATURATED, ORGANIC SUBSTANCES CAPABLE OF COPOLYMERIZING THEREWITH WITH (2) AN TRANSESTER HAVING THE FORMULA
Claim 3
Independent Claim
71 words
THE METHOD WHICH COMPRISES HEATING AT A TEMPERATURE OF FROM 150*C. TO 225*C. A RUBBER-LIKE BUTADIENESTYRENE COPOLYMER WITH AN ALKYL FUMARATE IN WHICH THE ALKYL RADICAL HAS FROM 1 TO 8 CARBON ATOMS AND RECOVERING FROM THE RESULTING REACTION PRODUCT A VISCOUS ADDUCT IN WHICH FROM 1 TO 2 MOLES OF SAID FUMARATE ARE COMBINED AT EACH OF AT LEAST 5 PERCENT OF THE BUTENE UNITS OF SAID RUBBER-LIKE SYNTHETIC PRODUCT.
Claim 4
Independent Claim
71 words
THE METHOD WHICH COMPRISES HEATING AT A TEMPERATURE OF FROM 150*C. TO 225*C. A RUBBER-LIKE BUTADIENESTYRENE COPOLYMER WITH AN ALKYL FUMARATE IN WHICH THE ALKYL RADICAL HAS FROM 1 TO 8 CARBON ATOMS AND RECOVERING FROM THE RESULTING REACTION PRODUCT A VISCOUS ADDUCT IN WHICH FROM 1 TO 2 MOLES OF SAID FUMARATE ARE COMBINED AT EACH OF AT LEAST 5 PERCENT OF THE BUTENE UNITS OF SAID RUBBER-LIKE SYNTHETIC PRODUCT.
References Cited (Backward Citations)
US2383569A
Cited
US2634256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |