Invention Grant
- Patent Title: Process for producing an absorbent polymer by means of spread-drying
- Patent Title (中): 通过铺展法制造吸收性聚合物的方法
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Application No.: US11578918Application Date: 2005-04-20
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Publication No.: US07728045B2Publication Date: 2010-06-01
- Inventor: Volker Becker , Heinz-Peter Grupe , Detlef Jung , Armin Reimann
- Applicant: Volker Becker , Heinz-Peter Grupe , Detlef Jung , Armin Reimann
- Applicant Address: DE Krefeld
- Assignee: Evonik Stockhausen GmbH
- Current Assignee: Evonik Stockhausen GmbH
- Current Assignee Address: DE Krefeld
- Agency: Smith Moore Leatherwood LLP
- Priority: DE102004019264 20040421
- International Application: PCT/EP2005/004228 WO 20050420
- International Announcement: WO2005/103119 WO 20051103
- Main IPC: B29B9/00
- IPC: B29B9/00 ; C08F6/06 ; C08J3/12 ; B01J20/26

Abstract:
The process according to the invention for production of an absorbent polymer comprising the following process steps: i) polymerization of an aqueous monomer solution to obtain a polymer gel; ii) comminution of the polymer gel to obtain a gel granulate; and iii) drying of the gel granulate, and is characterized in that the gel granulate after step ii) has a spread behavior. The production process of an absorbent polymer distinguishes itself by a particularly efficient drying step iii), which enables a particularly gentle and uniform drying of the gel granulate. The obtained absorbent polymers and products and items produced therefrom have a particularly uniform product quality and constant physical-chemical properties.
Public/Granted literature
- US20080021150A1 Process For Producing An Absorbent Polymer By Means Of Spread-Drying Public/Granted day:2008-01-24
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