US3227608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of synthetic paper sheet
Assignee: Battelle-Institut
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Filing: 1964-08-21
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Granted: 1966-01-04
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Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Willicks Winfried
- 👤 Grossteinbeck Rolf
- 👤 Tepel Gert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:37
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/10; D21H13/20; D21H13/24; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H17/08; D21H17/20; D21H17/33; D21H17/46; D21H17/53; D21H17/60; D21H5/00; D21H5/12; D21H5/1272; D21H5/129; D21H5/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A METHOD OF PREPARING AN UNWOVEN WEB MATERIAL CONSISTING TO AT LEAST 50 PERCENT BY WEIGHT OF SYNTHETIC TEXTILE FIBERS, THE BALANCE BEING NATURAL TEXTILE FIBERS, ON A CONVENTIONAL PAPER-FORMING MACHINE COMPRISING ADDING TO SAID TEXTILE FIBERS, PRIOR TO THEIR PASSAGE THROUGH THE PAPERFORMING MACHINE, ABOUT 30 TO 50 PERCENT, CALCULATED ON THE DRY WEIGHT OF SAID TEXTILE FIBERS, OF FIBERS CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF (A) A POLYURETHANE FORMING MIXTURE OF A POLYESTER HAVING AT LEAST ONE FREE HYDROXYL GROUP AND A POLYISOCYANATE WHOSE GROUPS ARE BLOCKED BY A MEMBER OF THE GROUP CONSISTING OF ALCOHOLS AND PHENOLS BUT ARE REACTIVE AT A TEMPERATURE OF ABOUT 100*C., (B) A WAX HAVING A MELTING POINT BELOW THE MELTING POINT OF SAID POLYURETHANE, AND (C) AN ALKYD RESIN, THE PROPORTION OF SAID POLYURETHANE FORMING MIXTURE TO SAID WAX BEING ABOUT 1:0-1-1, AND THE AMOUNT OF SAID ALKYD RESIN BEING ABOUT 5 TO 25 PERCENT BY WEIGHT OF THE TOTAL POLYURETHANE-WAX MIXTURE.
Claim 2
Independent Claim
162 words
A METHOD OF PREPARING AN UNWOVEN WEB MATERIAL CONSISTING TO AT LEAST 50 PERCENT BY WEIGHT OF SYNTHETIC TEXTILE FIBERS, THE BALANCE BEING NATURAL TEXTILE FIBERS, ON A CONVENTIONAL PAPER-FORMING MACHINE COMPRISING ADDING TO SAID TEXTILE FIBERS, PRIOR TO THEIR PASSAGE THROUGH THE PAPERFORMING MACHINE, ABOUT 30 TO 50 PERCENT, CALCULATED ON THE DRY WEIGHT OF SAID TEXTILE FIBERS, OF FIBERS CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF (A) A POLYURETHANE FORMING MIXTURE OF A POLYESTER HAVING AT LEAST ONE FREE HYDROXYL GROUP AND A POLYISOCYANATE WHOSE GROUPS ARE BLOCKED BY A MEMBER OF THE GROUP CONSISTING OF ALCOHOLS AND PHENOLS BUT ARE REACTIVE AT A TEMPERATURE OF ABOUT 100*C., (B) A WAX HAVING A MELTING POINT BELOW THE MELTING POINT OF SAID POLYURETHANE, AND (C) AN ALKYD RESIN, THE PROPORTION OF SAID POLYURETHANE FORMING MIXTURE TO SAID WAX BEING ABOUT 1:0-1-1, AND THE AMOUNT OF SAID ALKYD RESIN BEING ABOUT 5 TO 25 PERCENT BY WEIGHT OF THE TOTAL POLYURETHANE-WAX MIXTURE.
Claim 3
Dependent Claim
114 words
A FILAMENTARY COMPOSITION, SUITABLE AS ADDITION IN THE MANUFACTURE OF UNWOVEN WEB MATERIAL, CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF (A) A POLYURETHANE FORMING MIXTURE OF A POLYESTER HAVING AT LEAST ONE FREE HYDROXYL GROUP AND A POLYISOCYANATE WHOSE ISOCYANATE GROUPS ARE BLOCKED BY A MEMBER OF THE GROUP CONSISTING OF ALCOHOLS AND PHENOLS BUT ARE REACTIVE AT A TEMPERATURE OF ABOUT 100*C., (B) A WAX HAVING A MELTING POINT BELOW THE MELTING POINT OF SAID POLYURETHANE, AND (C) AN ALKYD RESIN, THE PROPORTION OF SAID POLURETHANE FORMING MIXTURE TO SAID WAX BEING ABOUT 1:0.1-1, AND THE AMOUNT OF SAID ALKYD RESIN BEING ABOUT 5 TO 25 PERCENT BY WEIGHT OF TOTAL POLYURETHANE-WAX MIXTURE.
Claim 4
Dependent Claim
114 words
A FILAMENTARY COMPOSITION, SUITABLE AS ADDITION IN THE MANUFACTURE OF UNWOVEN WEB MATERIAL, CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF (A) A POLYURETHANE FORMING MIXTURE OF A POLYESTER HAVING AT LEAST ONE FREE HYDROXYL GROUP AND A POLYISOCYANATE WHOSE ISOCYANATE GROUPS ARE BLOCKED BY A MEMBER OF THE GROUP CONSISTING OF ALCOHOLS AND PHENOLS BUT ARE REACTIVE AT A TEMPERATURE OF ABOUT 100*C., (B) A WAX HAVING A MELTING POINT BELOW THE MELTING POINT OF SAID POLYURETHANE, AND (C) AN ALKYD RESIN, THE PROPORTION OF SAID POLURETHANE FORMING MIXTURE TO SAID WAX BEING ABOUT 1:0.1-1, AND THE AMOUNT OF SAID ALKYD RESIN BEING ABOUT 5 TO 25 PERCENT BY WEIGHT OF TOTAL POLYURETHANE-WAX MIXTURE.
References Cited (Backward Citations)
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Cited
US2680995A
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US2962762A
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US3049466A
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US3053609A
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US3096231A
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |