IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0600964
(2008-05-21)
|
| 등록번호 |
US-8349913
(2013-01-08)
|
| 우선권정보 |
DE-10 2007 024 080 (2007-05-22) |
| 국제출원번호 |
PCT/EP2008/004085
(2008-05-21)
|
| §371/§102 date |
20091215
(20091215)
|
| 국제공개번호 |
WO2008/141821
(2008-11-27)
|
|
발명자
/ 주소 |
- Harren, Jörg
- Vorholt, Herbert
- Van Stiphoudt, Manfred
- Hose, Rüdiger
- Ramlow, Stephan
- Derstappen, Stefan
- Busch, Axel
- Lange, Michael
- Inger, Waldemar
- Hebben, Kai
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
Smith Moore Leatherwood LLP
|
| 인용정보 |
피인용 횟수 :
10 인용 특허 :
23 |
초록
▼
The present invention relates to a process for the production of a superabsorber, comprising as steps providing a water-absorbing polymer structure, bringing the water-absorbing polymer structure into contact with a modifying agent, preferably a modifying agent, and the further treatment of the wate
The present invention relates to a process for the production of a superabsorber, comprising as steps providing a water-absorbing polymer structure, bringing the water-absorbing polymer structure into contact with a modifying agent, preferably a modifying agent, and the further treatment of the water-absorbing polymer structure which has been brought into contact with the modifying agent. The further treatment is carried out at least partly in a rotating container. The invention furthermore relates to a device for the production of a superabsorber, superabsorbers, a composite, a process for the production of a composite, the composites obtainable by this process, chemical products, such as foams, shaped articles or fibers, and the use of a superabsorber.
대표청구항
▼
1. A process for the production of a superabsorber, comprising as steps: a) providing a water-absorbing crosslinked polymer structure;b) bringing the water-absorbing crosslinked polymer structure into contact with a modifying agent; andc) further treating the water-absorbing crosslinked polymer stru
1. A process for the production of a superabsorber, comprising as steps: a) providing a water-absorbing crosslinked polymer structure;b) bringing the water-absorbing crosslinked polymer structure into contact with a modifying agent; andc) further treating the water-absorbing crosslinked polymer structure which has been brought into contact with the modifying agent;wherein process steps b and c) are carried out at least in part in a rotating container comprising a horizontally mounted container constructed like a drum, which can be made to rotate around an axis running horizontally through the middle of the container by suitable means and wherein said horizontally mounted container comprises an inlet feed for said modifying agent, wherein said polymerization region, said drying region, and said further treatment region are in communication with one another by fluid lines. 2. The process according to claim 1, wherein the water-absorbing crosslinked polymer structure provided in process step a) has a water content of at most about 20 wt. %, based on the total weight of the water-absorbing polymer structure. 3. The process according to claim 1, wherein step c) is carried out continuously. 4. The process according to claim 1, wherein the modifying agent is chosen from a solution, a dispersion, an emulsion, and a powder. 5. The process according to claim 1, wherein the water-absorbing crosslinked polymer structure is post-crosslinked on the surface. 6. The process according to claim 1, wherein the water-absorbing crosslinked polymer structure flows through the rotating container. 7. The process according to claim 1, wherein the rotating container is filled to at most about 80% of the largest cross-sectional area of the rotating container. 8. The process according to claim 7, wherein the rotating container is at least partly configured in the form of a drum. 9. A device for the production of a superabsorber comprising: a polymerization region;a drying region; anda further treatment region; wherein said further treatment region comprises a rotatable container comprising a horizontally mounted container constructed like a drum, which can be made to rotate around an axis running horizontally through the middle of the container by suitable means and wherein said horizontally mounted container comprises an inlet feed for a modifying agent and wherein said rotatable container comprises a movable discharge element wherein said discharge element is in communication with a lance which may be guided in and out of said rotatable container along an axis of rotation of the rotating container; and wherein said polymerization region, said drying region, and said further treatment region are in communication with one another by fluid lines. 10. A process for the production of a superabsorber, comprising as steps: a) providing a water-absorbing crosslinked polymer structure;b) bringing the water-absorbing crosslinked polymer structure into contact with a modifying agent; andc) treating the water-absorbing crosslinked polymer structure which has been brought into contact with the modifying agent in a step of further treatment;wherein said further treatment is carried out in a device comprising: a polymerization region;a drying region; anda further treatment region;wherein said further treatment region comprises a rotatable container comprising a horizontally mounted container constructed like a drum, which rotates around an axis running horizontally through the middle of the container by suitable means and wherein said horizontally mounted container comprises an inlet feed for said modifying agent and wherein said rotatable container comprises a vertically adjustable weir; andwherein said polymerization region, said drying region, and said further treatment region are in communication with one another by fluid lines. 11. The process according to claim 10, wherein the superabsorber comprises an inner region and an outer region surrounding the inner region, and wherein said modifying agent is found in the outer region of the superabsorber. 12. The process according to claim 1, wherein said modifying agent is selected from water, a solution, a dispersion, an emulsion or a powder. 13. The process according to claim 12, wherein said modifying agent comprises at least 50 wt % water based on the total weight of the modifying agent. 14. The device of claim 9, wherein said modifying agent is selected from water, a solution, a dispersion, an emulsion or a powder. 15. The device of claim 14, wherein said modifying agent comprises at least 50 wt % water based on the total weight of the modifying agent. 16. The process according to claim 10, wherein said modifying agent is selected from water, a solution, a dispersion, an emulsion or a powder. 17. The process according to claim 16, wherein said modifying agent comprises at least 50 wt % water based on the total weight of the modifying agent.
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