Patent US3663489A successfully refreshed from Google Patents.
US3663489A
Expired / Lapsed
US
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Heat-resistant phenolic resin foam forming composition
Assignee: Butler Manufacturing Co
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Filing: 1970-02-19
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Granted: 1972-05-16
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Expires: 1990-02-19
Abstract
Abstract A HEAT-RESISTANT PHENOLIC RESIN COMPOSITION COMPRISING A PHENOLALDEHYDE RESOLE AND A BORON CONTAINING COMPOUND FORMED BY REACTING BORIC ACID OR BORIC OXIDE WITH GLYOXAL, GLYOXAL TRIMER, SUBSTITUTED GLYOXAL AND GLYOXAL DERIVATIVES. THESE REACTION PRODUCTS PRODUCE AN "ACID LIKE" CURE OF THE RESIN AS THEY ARE WEAK ACIDS IN THE PRESENCE OF THE WATER IN THE PHENOLEFOMALDEHYDE RESOLE. THE RESIN MAY BE MADE INTO COATINGS, CASTINGS OR, BY THE ADDITION OF A SURFACANT AND A BLOWING AGENT, FOAMS MAY BE PRODUCED.
Inventors
- 👤 Thomas J Byerley
- 👤 Howard W Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0047; C08K; C08K5/00; C08K5/55; C08J2361/00; C08J2361/04; C08J2361/06; C08J2361/08; C08J2361/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |