US2550476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral aggregate bonding composition
Assignee: Atlantic Richfield Co
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Filing: 1947-11-18
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Granted: 1951-04-24
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Expires: 1967-11-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Hersberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A MINERAL AGGREGATE BONDING COMPOSITION COMPRISING A BITUMEN AND A SMALL AMOUNT OF A CONDENSATION PRODUCT SUFFICIENT TO SUBSTANTIALLY INCREASE THE ADHESIVITY OF THE BITUMEN FOR MINERAL AGGREGATES, SAID CONDENSATION PRODUCT BEING PREPARED BY REACTING AN OLEFIN CONTAINING FROM 5 TO 20 CARBON ATOMS WITH AN UNSATURATED DICARBOXYLIC ACID ANHYDRIDE AT 350* F. TO 550* F. TO PRODUCE AN ALKENYL DICARBOXYLIC ACID ANHYDRIDE AND HIGHER BOILING FRACTIONS, FRACTIONALLY DISTILLING THE REACTION MIXTURE TO SEPARATE THE ALKENYL DICARBOXYLIC ACID ANHYDRIDE FROM THE HIGHER BOILING FRACTIONS, AND REACTING THE HIGHER BOILING FRACTIONS WITH FROM 1 TO 2 MALAR EQUIVLENTS OF A DIAMINE CONTAINING FROM 2 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
107 words
A MINERAL AGGREGATE BONDING COMPOSITION COMPRISING A BITUMEN AND A SMALL AMOUNT OF A CONDENSATION PRODUCT SUFFICIENT TO SUBSTANTIALLY INCREASE THE ADHESIVITY OF THE BITUMEN FOR MINERAL AGGREGATES, SAID CONDENSATION PRODUCT BEING PREPARED BY REACTING AN OLEFIN CONTAINING FROM 5 TO 20 CARBON ATOMS WITH AN UNSATURATED DICARBOXYLIC ACID ANHYDRIDE AT 350* F. TO 550* F. TO PRODUCE AN ALKENYL DICARBOXYLIC ACID ANHYDRIDE AND HIGHER BOILING FRACTIONS, FRACTIONALLY DISTILLING THE REACTION MIXTURE TO SEPARATE THE ALKENYL DICARBOXYLIC ACID ANHYDRIDE FROM THE HIGHER BOILING FRACTIONS, AND REACTING THE HIGHER BOILING FRACTIONS WITH FROM 1 TO 2 MALAR EQUIVLENTS OF A DIAMINE CONTAINING FROM 2 TO 18 CARBON ATOMS.
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) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |