Methods for reducing amine odor in paper
Abstract
A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.
Term
Term ended
Projected expiry passed 16 August 2019, 7.1 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
13 members in 8 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 9978198 | United States of America | P | |
| 32107899 | United States of America | A | |
| 9918563 | United States of America | W |
Members13
| Document | Office | Kind | |
|---|---|---|---|
| CA2352153A1 | Canada | A1 | |
| WO0015906A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU5674799A | Australia | A | |
| EP1123442A1 | European Patent Office (EPO) | A1 | |
| CN1325472A | China | A | |
| EP1123442B1 | European Patent Office (EPO) | B1 | |
| US6491790B1 | United States of America | B1 | |
| AT228596T | Austria | T | |
| ATE228596T1This record | Austria | T1 | |
| DE69904227D1 | Germany | D1 | |
| US2003070782A1 | United States of America | A1 | |
| US6743335B2 | United States of America | B2 | |
| CA2352153C | Canada | C |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Ceased as to paragraph 5 lit. 3 law introducing patent treatiesCeasedRER | RER |
Numbers
- Application
- 99943705
Titles2
- German
- VERFAHREN ZUR VERMINDERUNG VON AMINEGERUCH IN PAPIER
- English
- METHOD FOR REDUCING AMINE ODOR IN PAPER
Classification
- CPC, 13
- B32B29/06
- B32B27/10
- D21H17/16
- D21H17/17
- D21H17/375
- D21H17/455
- D21H17/66
- D21H21/16
- D21H25/02
- B32B15/08
- B32B15/20
- B32B2311/24
- B32B2307/714
- IPC, 8
- B32B29 06
- D21H17 16
- D21H17 17
- D21H17 37
- D21H17 45
- D21H17 66
- D21H21 16
- D21H25 02