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US2517218A
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Polyvinyl butyral composition
Assignee: Monsanto Chemicals Ltd
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Filing: 1946-03-23
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Granted: 1950-08-01
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Expires: 1966-03-23
Abstract
No abstract record available.
Inventors
- 👤 Robert R Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:00
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2213; Y10T442/2352; Y10T442/2369; Y10T442/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A COMPOSITION COMPRISING A POLYVINYL BUTYRALDEHYDE ACETAL RESIN CONTAINING, ON A CHEMICAL EQUIVALENT BASIS, AT LEAST 30% ACETAL GROUPS AND NOT MORE THAN 50% HYDROXYL GROUPS, A COMPATIBLE AMOUNT WHICH IS AT LEAST 50 PARTS OF, A PLASTICIZER FROM THE GROUP CONSISTING OF TRI-(2ETHYL-HEXYL) PHOSPHATE, TRI-(BUTOXY-ETHYL) PHOSPHATE AND DI-(BUTOXY-ETHYL) SEBACATE, AND 50150 PARTS OF AN INERT, INORGANIC FILLER FOR EVERY 100 PARTS OF ACETAL RESIN.
Claim 2
Dependent Claim
65 words
A COMPOSITION COMPRISING A POLYVINYL BUTYRALDEHYDE ACETAL RESIN CONTAINING, ON A CHEMICAL EQUIVALENT BASIS, AT LEAST 30% ACETAL GROUPS AND NOT MORE THAN 50% HYDROXYL GROUPS, A COMPATIBLE AMOUNT WHICH IS AT LEAST 50 PARTS OF, A PLASTICIZER FROM THE GROUP CONSISTING OF TRI-(2ETHYL-HEXYL) PHOSPHATE, TRI-(BUTOXY-ETHYL) PHOSPHATE AND DI-(BUTOXY-ETHYL) SEBACATE, AND 50150 PARTS OF AN INERT, INORGANIC FILLER FOR EVERY 100 PARTS OF ACETAL RESIN.
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) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |