Patent US3800730A successfully refreshed from Google Patents.
Patent US3223667A successfully refreshed from Google Patents.
US3223667A
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Thermosetting resin composition comprising alkali bark derivative and polymethylol phenol and adhesive prepared therefrom
Assignee: Rayonier Inc
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Filing: 1961-03-20
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Granted: 1965-12-14
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Franklin W Herrick
- 👤 Louis H Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:46
CPC Classifications
C; C09; C09J; C09J161/00; C09J161/04; C09J161/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A THERMOSETTING COMPOSITION COMPRISING AN ALKALIBARK DERIVATIVE FROM A CONIFEROUS BARK PREPARED BY DIGESTING CONIFEROUS BARK WITH AN AQUEOUS SOLUTION OF AN ALKALINE COMPOUND OF THE GROUP CONSISTING OF NAOH, KOH, NH4OH, NA2S, K2S AND (NH4)2S AND REMOVING THE WATER-SOLUBEL ALKALI-BARK DERIVATIVE HAVING A FORMALDEHYDE REACTIVITY OF AT LEAST 5%, AND A POLYMERHYLOL PHENOL COMPOUND IN WHICH THE MOL RATIO OF FORMALDEHYDE TO PHENOL IS 2.0 TO O.0, SAID COMPOSITION WHEN IN AQUEOUS SOLUTION BEING CONDENSIBLE TO AN INSOLUBLE, INFUSIBLE RESIN BY HEAT, THE POLYMETHYLOL PHENOL COMPROUND PROVIDING FORMALDEHYDE WHICH REACTS WITH PHENOLIC CONSTITUENTS OF THE ALKALI-BARK DERIVATIVE IN FORMING THE RESIN.
Claim 2
Dependent Claim
102 words
A THERMOSETTING COMPOSITION COMPRISING AN ALKALIBARK DERIVATIVE FROM A CONIFEROUS BARK PREPARED BY DIGESTING CONIFEROUS BARK WITH AN AQUEOUS SOLUTION OF AN ALKALINE COMPOUND OF THE GROUP CONSISTING OF NAOH, KOH, NH4OH, NA2S, K2S AND (NH4)2S AND REMOVING THE WATER-SOLUBEL ALKALI-BARK DERIVATIVE HAVING A FORMALDEHYDE REACTIVITY OF AT LEAST 5%, AND A POLYMERHYLOL PHENOL COMPOUND IN WHICH THE MOL RATIO OF FORMALDEHYDE TO PHENOL IS 2.0 TO O.0, SAID COMPOSITION WHEN IN AQUEOUS SOLUTION BEING CONDENSIBLE TO AN INSOLUBLE, INFUSIBLE RESIN BY HEAT, THE POLYMETHYLOL PHENOL COMPROUND PROVIDING FORMALDEHYDE WHICH REACTS WITH PHENOLIC CONSTITUENTS OF THE ALKALI-BARK DERIVATIVE IN FORMING THE RESIN.
References Cited (Backward Citations)
US2574785A
Cited
US1802390A
Cited
US2053850A
Cited
US2437710A
Cited
US2574784A
Cited
US2773847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |