US2629699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified starch-urea-formaldehyde water resistant adhesive
Assignee: Stein Hall and Co Inc
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Filing: 1949-10-20
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Granted: 1953-02-24
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Expires: 1969-10-20
Abstract
No abstract record available.
Inventors
- 👤 Edward E Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:24
CPC Classifications
C; C09; C09J; C09J103/00; C09J103/02; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A DRY POWDER COMPOSITION CONSITING ESSENTIALLY OF 78 PARTS OF A MODIFIED STARCH WHICH HAS A WATER-SOLUBLES CONTENT IN THE RANGE OF ABOUT 0 TO 30%, 5 TO 10 PARTS OF A WATER-SOLUBLE HEATHARDENABLE UREA-FORMALDEHYDE CONDENSATE, 5 TO 15 PARTS OF AN ACIDIC MATERIAL WHICH GIVES A 3% AQUEOUS SOLUTION HAVING A PH IN THE RANGE OF 5.0 TO 5.5, AND 0.5 TO 5 PARTS OF A MIXTURE OF 30 TO 40% OF A WATER-SOLUBLE SALT OF AN ORGANIC SULFURIC REACTION PRODUCT CONTAINING AN ALKYL RADICAL OF FROM 8 TO 18 CARBON ATOMS AND A RADICAL SELECTED FROM THE GROUP CONSISTING OF A SULFATE ESTER RADICAL AND A SULFONIC RADICAL AND 70 TO 60% OF A NEUTRAL WATER-SOLUBLE INORGANIC SALT, SAID COMPOSITION BEING CHARACTERIZED BY GIVING A STABLE ADHESIVE PASTE UPON COOKING A 28.6% SOLIDS AQUEOUS DISPERSION THEREOF WHICH PASTE HAS A PH IN THE RANGE OF 5.0 TO 5.5 AND IS OF SUITABLE FLUIDITY OF APPLICATION AND WHICH DEVELOPS INTO A WATER RESISTANT BOND UPON DRYING AND STANDING AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
172 words
A DRY POWDER COMPOSITION CONSITING ESSENTIALLY OF 78 PARTS OF A MODIFIED STARCH WHICH HAS A WATER-SOLUBLES CONTENT IN THE RANGE OF ABOUT 0 TO 30%, 5 TO 10 PARTS OF A WATER-SOLUBLE HEATHARDENABLE UREA-FORMALDEHYDE CONDENSATE, 5 TO 15 PARTS OF AN ACIDIC MATERIAL WHICH GIVES A 3% AQUEOUS SOLUTION HAVING A PH IN THE RANGE OF 5.0 TO 5.5, AND 0.5 TO 5 PARTS OF A MIXTURE OF 30 TO 40% OF A WATER-SOLUBLE SALT OF AN ORGANIC SULFURIC REACTION PRODUCT CONTAINING AN ALKYL RADICAL OF FROM 8 TO 18 CARBON ATOMS AND A RADICAL SELECTED FROM THE GROUP CONSISTING OF A SULFATE ESTER RADICAL AND A SULFONIC RADICAL AND 70 TO 60% OF A NEUTRAL WATER-SOLUBLE INORGANIC SALT, SAID COMPOSITION BEING CHARACTERIZED BY GIVING A STABLE ADHESIVE PASTE UPON COOKING A 28.6% SOLIDS AQUEOUS DISPERSION THEREOF WHICH PASTE HAS A PH IN THE RANGE OF 5.0 TO 5.5 AND IS OF SUITABLE FLUIDITY OF APPLICATION AND WHICH DEVELOPS INTO A WATER RESISTANT BOND UPON DRYING AND STANDING AT ROOM TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |