Invention Grant
US08410233B2 Method for producing superabsorbers with a low residual monomer content
有权
制备残留单体含量低的超吸收体的方法
- Patent Title: Method for producing superabsorbers with a low residual monomer content
- Patent Title (中): 制备残留单体含量低的超吸收体的方法
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Application No.: US13058235Application Date: 2009-08-10
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Publication No.: US08410233B2Publication Date: 2013-04-02
- Inventor: Mark Elliott , Thomas Daniel
- Applicant: Mark Elliott , Thomas Daniel
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Priority: EP08162218 20080812
- International Application: PCT/EP2009/060315 WO 20090810
- International Announcement: WO2010/018143 WO 20100218
- Main IPC: C08F2/00
- IPC: C08F2/00 ; C08F20/02 ; C08F20/62
Abstract:
To prepare superabsorbents with a low residual monomer content, a salt of urea with an inorganic acid is added to the monomer mixture before or during the polymerization or to the polymer after the polymerization but before a heat treatment which follows the polymerization.
Public/Granted literature
- US20110136986A1 Method for Producing Superabsorbers with a Low Residual Monomer Content Public/Granted day:2011-06-09
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