US3004855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch adhesive compositions
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1958-06-30
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Granted: 1961-10-17
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Clifford E Smith
- 👤 John V Tuschhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:08
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/40; C; C08; C08B; C08B31/00; C08B31/003; C09; C09J; C09J103/00; C09J103/02; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN THE METHOD OF PREPARING CORRUGATED BOARD IN WHICH A STARCHY ADHESIVE IS APPLIED TO A CORRUGATED BOARD PLY, THE ADHESIVE BEING A SUSPENSION OF UNGELATINIZED STARCH IN A PREPARED AQUEOUS STARCH PASTE CARRIER, THE IMPROVEMENT FOR STABILIZING THE VISCOSITY OF SAID ADHESIVE DURING ITS APPLICATION THAT COMPRISES PREPARING A STARCH PASTE WITH AN ALKALINITY OF AT LEAST PH 9, REACTING SAID PASTE WITH UP TO 5% OF A POLYFUNCTIONAL CROSS-LINKING REAGENT HAVING AT LEAST TWO FUNCTIONAL GROUPS WHICH, AT SAID ALKALINITY, REACT TO COMBINE WITH STARCH THROUGH THE OXYGEN ATOMS OF STARCH HYDROXYL GROUPS, THEREBY TO STABILIZE THE VISCOSITY OF SAID PASTE, THEN SUSPENDING THE UNGELATINIZED STARCH IN THE REACTED PASTE TO FORM THE ADHESIVE AND GELATINIZING THE UNGELATIZINED STARCH BETWEEN PLIES OF THE CORRUGATED BOARD, SAID FUNCTIONAL GROUPS BEING SELECTED FROM THE GROUP CONSISTING OF HALOGEN, ALDEHYDE, VINYL, EPOXY AND NITRILE.
Claim 2
Dependent Claim
143 words
IN THE METHOD OF PREPARING CORRUGATED BOARD IN WHICH A STARCHY ADHESIVE IS APPLIED TO A CORRUGATED BOARD PLY, THE ADHESIVE BEING A SUSPENSION OF UNGELATINIZED STARCH IN A PREPARED AQUEOUS STARCH PASTE CARRIER, THE IMPROVEMENT FOR STABILIZING THE VISCOSITY OF SAID ADHESIVE DURING ITS APPLICATION THAT COMPRISES PREPARING A STARCH PASTE WITH AN ALKALINITY OF AT LEAST PH 9, REACTING SAID PASTE WITH UP TO 5% OF A POLYFUNCTIONAL CROSS-LINKING REAGENT HAVING AT LEAST TWO FUNCTIONAL GROUPS WHICH, AT SAID ALKALINITY, REACT TO COMBINE WITH STARCH THROUGH THE OXYGEN ATOMS OF STARCH HYDROXYL GROUPS, THEREBY TO STABILIZE THE VISCOSITY OF SAID PASTE, THEN SUSPENDING THE UNGELATINIZED STARCH IN THE REACTED PASTE TO FORM THE ADHESIVE AND GELATINIZING THE UNGELATIZINED STARCH BETWEEN PLIES OF THE CORRUGATED BOARD, SAID FUNCTIONAL GROUPS BEING SELECTED FROM THE GROUP CONSISTING OF HALOGEN, ALDEHYDE, VINYL, EPOXY AND NITRILE.
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |