Patent US4309510A successfully refreshed from Google Patents.
US4309510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing composition
Assignee: Hoechst AG
•
Filing: 1980-10-15
•
Granted: 1982-01-05
•
Expires: 2000-10-15
Abstract
Abstract A sizing composition consisting of a polyvinyl alcohol and of from 1 to 30, preferably 5 to 15, weight %, referred to the polyvinyl alcohol, of an amine oxide of the formula ##STR1## wherein R 1 is C 5 -C 22 alkyl, R 2 is C 1 -C 22 alkyl or a group of the formula--(CH 2 CH 2 O) n H with n being an integer of from 1 to 5 and R 3 is C 1 -C 5 alkyl or a group of the formula--(CH 2 CH 2 O) m H with m being an integer of from 1 to 10, if R 2 is alkyl having not more than 5 carbon atoms, the sum of n+m being not greater than 10.
Inventors
- 👤 Rolf Kleber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:57
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333; D06M13/00; D06M13/322; D06M13/388
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
A sizing composition consisting of a polyvinyl alcohol and of from 1 to 30, preferably 5 to 15, weight %, referred to the polyvinyl alcohol, of an amine oxide of the formula ##STR3## wherein R 1 is C 5 -C 22 alkyl, R 2 is C 1 -C 22 alkyl or a group of the formula --(CH 2 CH 2 O) n H with n being an integer of from 1 to 5 and R 3 is C 1-C 5 alkyl or a group of the formula --(CH 2 CH 2 O) m H with m being an integer of from 1 to 10, if R 2 is alkyl having not more than 5 carbon atoms, the sum of n+m being not greater than 10.
Claim 2
Dependent Claim
125 words
A sizing composition consisting of a polyvinyl alcohol and of from 1 to 30, preferably 5 to 15, weight %, referred to the polyvinyl alcohol, of an amine oxide of the formula ##STR3## wherein R 1 is C 5 -C 22 alkyl, R 2 is C 1 -C 22 alkyl or a group of the formula --(CH 2 CH 2 O) n H with n being an integer of from 1 to 5 and R 3 is C 1-C 5 alkyl or a group of the formula --(CH 2 CH 2 O) m H with m being an integer of from 1 to 10, if R 2 is alkyl having not more than 5 carbon atoms, the sum of n+m being not greater than 10.
Claim 3
Dependent Claim
19 words
Sizing liquor containing of from 2 to 20 weight % of the sizing composition as claimed in claim 1.
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) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |