US2983629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating a cellulose-containing base to impart thereto acid resistance, composition therefor and the resultant product
Assignee: De Soto Chemical Coatings Inc
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Filing: 1958-06-13
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Granted: 1961-05-09
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Bryce P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:46
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/02; B27K3/15; C; C08; C08L; C08L97/00; C08L97/02; B27K5/00; B27K5/04; C08L61/00; C08L61/04; C08L61/06; C08L61/20; C08L61/22; Y; Y10; Y10T; Y10T428/00; Y10T428/4935; Y10T428/662
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF INHIBITING THE DETERIORATION OF A CELLULOSE-CONTAINING BASE NORMALLY DETERIORATING IN THE PRESENCE OF ACID COMPRISING CONFERRING ACID RESISTANCE UPON SAID CELLULOSE-CONTAINING BASE BY TREATING THE LATTER WITH A LIQUID IMPREGNATING COMPOSITION FORMED FROM A MIXTURE OF (A) A THERMOSETTING RESIN SELECTED FROM THE GROUP OF RESINS CONSISTING OF PHENOL-ALDEHYDE AND AMINEALDEHYDE RESINS, AND (B) AT LEAST ONE DICARBOXYLIC ACID PRESENT IN THE MIXTURE IN AN AMOUNT BETWEEN ABOUT 25% AND ABOUT 100% BASED ON RESIN SOLIDS, AT LEAST ONE-THIRD OF THE DICARBOXYLIC ACID-CONTENT BEING OXALIC ACID, AND DRYING AND BAKING THE SO-TREATED CELLULOSE-CONTAINING BASE AT A TEMPERATURE OF BETWEEN 130*F. AND 200*F.
Claim 2
Independent Claim
105 words
THE METHOD OF INHIBITING THE DETERIORATION OF A CELLULOSE-CONTAINING BASE NORMALLY DETERIORATING IN THE PRESENCE OF ACID COMPRISING CONFERRING ACID RESISTANCE UPON SAID CELLULOSE-CONTAINING BASE BY TREATING THE LATTER WITH A LIQUID IMPREGNATING COMPOSITION FORMED FROM A MIXTURE OF (A) A THERMOSETTING RESIN SELECTED FROM THE GROUP OF RESINS CONSISTING OF PHENOL-ALDEHYDE AND AMINEALDEHYDE RESINS, AND (B) AT LEAST ONE DICARBOXYLIC ACID PRESENT IN THE MIXTURE IN AN AMOUNT BETWEEN ABOUT 25% AND ABOUT 100% BASED ON RESIN SOLIDS, AT LEAST ONE-THIRD OF THE DICARBOXYLIC ACID-CONTENT BEING OXALIC ACID, AND DRYING AND BAKING THE SO-TREATED CELLULOSE-CONTAINING BASE AT A TEMPERATURE OF BETWEEN 130*F. AND 200*F.
References Cited (Backward Citations)
US2233875A
Cited
US2629648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |