Patent US2555385A successfully refreshed from Google Patents.
US2555385A
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Metal polyactyllactate polymers
Assignee: Individual
•
Filing: 1947-06-20
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Granted: 1951-06-05
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Expires: 1967-06-20
Abstract
No abstract record available.
Inventors
- 👤 Paul D Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR PREPARING A METAL POLYLACTYLLACTATE COMPRISING HEATING A COMPOSITION, THE REACTIVE COMPONENTS OF WHICH CONSIST OF (A) A SALT OF A METAL HAVING A VALENCE EXCEEDING 1 AND SUBSTANTIALLY SOLUBLE IN THE COMPOSITION, AND (B) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYLACTYLLACTIC ACID AND AQUEOUS LACTIC ACID, SAID COMPONENTS BEING PRESENT IN THE PROPORTION, BY WEIGHT, OF SUBSTANTIALLY 1 PART OF THE SALT TO AN AMOUNT OF THE MATERIAL OF GROUP B EQUIVALENT, ON A LACTIC ACID BASIS, TO FROM 14.7 TO 252 PARTS OF 85% LACTIC ACID, AT A TEMPERATURE SUBSTANTIALLY WITHIN THE RANGE OF FROM 150* C. TO 270* C. AND AT A SUBSTANTIALLY WITHIN THE RANGE OF FROM 13 MM. TO ATMOSPHERIC PRESSURE, TEMPERATURES EXCEEDING 180* C. EMPLOYING ATMOSPHERIC PRESSURE, THEREBY TO PRODUCE A METAL ATMOSPHERIC LACTATE HAVING A CONTENT OF FROM 0.25 TO 6% OF THE SAID METAL.
Claim 2
Dependent Claim
146 words
A PROCESS FOR PREPARING A METAL POLYLACTYLLACTATE COMPRISING HEATING A COMPOSITION, THE REACTIVE COMPONENTS OF WHICH CONSIST OF (A) A SALT OF A METAL HAVING A VALENCE EXCEEDING 1 AND SUBSTANTIALLY SOLUBLE IN THE COMPOSITION, AND (B) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYLACTYLLACTIC ACID AND AQUEOUS LACTIC ACID, SAID COMPONENTS BEING PRESENT IN THE PROPORTION, BY WEIGHT, OF SUBSTANTIALLY 1 PART OF THE SALT TO AN AMOUNT OF THE MATERIAL OF GROUP B EQUIVALENT, ON A LACTIC ACID BASIS, TO FROM 14.7 TO 252 PARTS OF 85% LACTIC ACID, AT A TEMPERATURE SUBSTANTIALLY WITHIN THE RANGE OF FROM 150* C. TO 270* C. AND AT A SUBSTANTIALLY WITHIN THE RANGE OF FROM 13 MM. TO ATMOSPHERIC PRESSURE, TEMPERATURES EXCEEDING 180* C. EMPLOYING ATMOSPHERIC PRESSURE, THEREBY TO PRODUCE A METAL ATMOSPHERIC LACTATE HAVING A CONTENT OF FROM 0.25 TO 6% OF THE SAID METAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |