Nonwoven fabrics
Abstract
Abstract A process for binding nonwoven textiles by impregnating a nonwoven textile with a liquid application medium containing a polymer selected from the group consisting of 1. A POLYUREA POLYMER CHARACTERIZED BY THE GENERALIZED FORMULA WHEREIN M IS 0 OR 1, Q IS AN INTEGER FROM 1 TO 13, P'' IS A INTEGER FROM 3 TO 100, R'' is an alkylene group containing 3 to 5 carbon atoms, each R'''' is independently hydrogen or methyl and each R is independently selected from the group consisting of H and CH2OH, with the proviso that at least is CH2OH and group. AND WITH THE FURTHER PROVISO THAT AT LEAST ONE R is a CH2OH group. AND WITH THE FURTHER PROVISO THAT AT LEAST ONE R is a CH2O AND AT LEAST ONE A is AND AT LEAST ONE A is WHEREIN M IS 0 OR 1, N IS AN INTEGER FROM 2 TO 14, Q IS AN INTEGER FROM 1 TO 13, R'' is an alkylene group having from 3 to 5 carbon atoms, each R'''' is independently hydrogen or methyl, and each R is independently selected from the group consisting of hydrogen and CH2OH, with the proviso that at least one A is of hydrogen and CH2OH, with the proviso that at least one and each R is independently selected from the group consis 5 carbon atoms, each R'''' is independently hydrogen or meth INTEGER FROM 1 TO 13, R'' is an alkylene group having from WHEREIN M IS 0 OR 1, N IS AN INTEGER FROM 2 TO 14, Q IS AN AND AND WHEREIN M IS 0 OR 1, Q IS AN INTEGER FROM 1 TO 13, P'' IS AN INTEGER FROM 3 TO 100, R'' is an alkylene group containing from 3 to 5 carbon atoms, each R'''' is independently hydrogen or methyl and each R is independently selected from the group consisting of H and CH2OH, with the proviso that at least one R is CH2OH and 2. POLYUREAURETHANE POLYMERS CHARACTERIZED BY THE GENERALIZED FORMULA (A)x wherein x is an integer from 2 to 100 and each A is independently selected from the group consisting of
Inventors
- 👤 R Santacecilia
- 👤 E Sherburne
Bibliographic Details
Claims Analysis
Total Claims: 10References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |