US2546841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino-aldehyde resin plasticized with a polyvinyl acetal and a flow-promoting secondary plasticizer
Assignee: Wyeth Holdings LLC
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Filing: 1946-07-19
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Granted: 1951-03-27
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Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wohnsiedler
- 👤 Jr William S Sloatman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08L; C08L61/00; C08L61/20; C08L61/26; C08L61/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A MOLDING COMPOSITION COMPRISING A MELAMIN-FORMALDEHYDE RESIN PLASTICIZED WITH A COMPATIBLE POLYVINYL ACETAL SELECTED FROM THE GROUP CONSISTING OF POLYVINYL FORMAL, POLYVINYL ACETAL, AND POLYVINYL BUTYRAL AND A FLOW PROMOTING SECONDARY PLASTICIZER COMPATBILE WITH BOTH SAID RESIN AND ACETAL AND SELECTED FROM THR GROUP CONSISTING OF ORTHO-CRESYL GLYCERYL ETHER, BENZAMIDE AND ACRYLAMIDE, SAID POLYVINYL ACETAL BEING PRESENT IN AN AMOUNT FROM 10-30% BASED ON THE RESIN COMPOSITION, SAID SECONDARY PLASTICIZER BEING PRESENT IN AN AMOUNT FROM 20-40% BASED ON THE ACETAL, SAID MELAMINE-FORMALDEHYDE RESIN HAVING BEEN PREPARED BY REACTING REACTANTS CONSISTING ESSENTIALLY OF MELAMINE-FORMALDEHYDE IN MOL RATIOS OF FROM 1:1.5 TO 1:4, RESPECTIVELY, AND SAID MELAMINE-FORMALDEHYDE RESIN BEING FUSIBLE AT TEMPERATURES UP TO 145* C.
Claim 2
Dependent Claim
115 words
A MOLDING COMPOSITION COMPRISING A MELAMIN-FORMALDEHYDE RESIN PLASTICIZED WITH A COMPATIBLE POLYVINYL ACETAL SELECTED FROM THE GROUP CONSISTING OF POLYVINYL FORMAL, POLYVINYL ACETAL, AND POLYVINYL BUTYRAL AND A FLOW PROMOTING SECONDARY PLASTICIZER COMPATBILE WITH BOTH SAID RESIN AND ACETAL AND SELECTED FROM THR GROUP CONSISTING OF ORTHO-CRESYL GLYCERYL ETHER, BENZAMIDE AND ACRYLAMIDE, SAID POLYVINYL ACETAL BEING PRESENT IN AN AMOUNT FROM 10-30% BASED ON THE RESIN COMPOSITION, SAID SECONDARY PLASTICIZER BEING PRESENT IN AN AMOUNT FROM 20-40% BASED ON THE ACETAL, SAID MELAMINE-FORMALDEHYDE RESIN HAVING BEEN PREPARED BY REACTING REACTANTS CONSISTING ESSENTIALLY OF MELAMINE-FORMALDEHYDE IN MOL RATIOS OF FROM 1:1.5 TO 1:4, RESPECTIVELY, AND SAID MELAMINE-FORMALDEHYDE RESIN BEING FUSIBLE AT TEMPERATURES UP TO 145* C.
References Cited (Backward Citations)
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Cited
US2413860A
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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) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |