Patent US3210309A successfully refreshed from Google Patents.
US3210309A
Expired / Lapsed
US
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Curing phenolic resins with alphapolyoxymethylene
Assignee: Hexion Inc
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Filing: 1960-06-21
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Granted: 1965-10-05
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Expires: 1980-06-21
Abstract
No abstract record available.
Inventors
- 👤 Baker Edgar Bradbury
- 👤 Krueger Bruno Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:30
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/02; C08G; C08G2/00; C08G2/06; C08G8/00; C08G8/04; C08G8/08; C08G8/20; C08G8/22; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE PROCESS OF MAKING A CURABLE RESN COMPOSITION COMPRISING THE STEPS OF: (1) MIXING (A) AN AQUEOUS SOLUTION OF ALKALI CONDENSED PHENOL-RESORCINOL-FORMALDEHYDE NOVOLAK RESIN WITH (B) A CURRING COMPOSITION OF ALPHA-POLYOXYMETHYLENE OF THE FORMULA HO-(CH2O)N-H IN WHICH THE APPROXIMATE VALUE OF N IS NOT LESS THAN 100, THE PROPORTION OF SAID ALPH-POLYOXYMETHYLENE BEING ABOUT 10-40 PARTS FOR 100 PARTS BY DRY WEIGHT OF THE RESIN, AND (C) AN ALKALI METAL HYDROXIDE IN AMOUNT TO ESTABLISH THE PH OF THE WHOLE MIXTURE AT ABOUT 7.1-9, AND (2) CURING SAID RESIN.
Claim 2
Dependent Claim
89 words
THE PROCESS OF MAKING A CURABLE RESN COMPOSITION COMPRISING THE STEPS OF: (1) MIXING (A) AN AQUEOUS SOLUTION OF ALKALI CONDENSED PHENOL-RESORCINOL-FORMALDEHYDE NOVOLAK RESIN WITH (B) A CURRING COMPOSITION OF ALPHA-POLYOXYMETHYLENE OF THE FORMULA HO-(CH2O)N-H IN WHICH THE APPROXIMATE VALUE OF N IS NOT LESS THAN 100, THE PROPORTION OF SAID ALPH-POLYOXYMETHYLENE BEING ABOUT 10-40 PARTS FOR 100 PARTS BY DRY WEIGHT OF THE RESIN, AND (C) AN ALKALI METAL HYDROXIDE IN AMOUNT TO ESTABLISH THE PH OF THE WHOLE MIXTURE AT ABOUT 7.1-9, AND (2) CURING SAID RESIN.
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |