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公开(公告)号:US20190127275A1
公开(公告)日:2019-05-02
申请号:US16092741
申请日:2017-04-14
申请人: BORREGAARD AS
发明人: Martin ANDRESEN , Guro Elise FREDHEIM , Jerry GARGULAK , David L. OLDROYD , Hans Petter PETTERSEN , Anders SJÖDE , Vibeke Bogetvedt SPERNES , Bjørn Arild JENSEN
摘要: A method for preparing a low-air entraining, low viscosity lignosulfonate composition. The method comprises: a) applying heat to the crude lignosulfonate composition under suitable conditions to reduce sugar levels to below 10%, optionally below 5%, optionally below 3%), or optionally below 1%, on a dry basis; b) mixing a crude lignosulfonate composition with an effective amount of a source of trivalent ion to complex air entraining fatty acids and resin acids; c) lowering temperature to prevent viscosity buildup.