Invention Grant
- Patent Title: Method for preparing unsaturated carboxylic acid
- Patent Title (中): 不饱和羧酸的制备方法
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Application No.: US14098154Application Date: 2013-12-05
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Publication No.: US09181170B2Publication Date: 2015-11-10
- Inventor: Jun Chwae , Nam Soo Park , Moo Ho Lee , Jong Won Kim
- Applicant: Samsung Electronics Co. Ltd.
- Applicant Address: KR Suwon-Si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-Si
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: KR10-2012-0142180 20121207
- Main IPC: C07C51/347
- IPC: C07C51/347 ; C07C51/377
Abstract:
A method for preparing an unsaturated carboxylic acid comprising (a) preparing an aqueous solution comprising an ammonium salt of hydroxycarboxylic acid and a salt of inorganic acid; (b) contacting the aqueous solution with a cation exchange resin to prepare a conversion aqueous solution comprising a hydroxycarboxylic acid and an inorganic acid; and (c) dehydrating the hydroxycarboxylic acid using the inorganic acid as a catalyst is provided.
Public/Granted literature
- US20140171681A1 METHOD FOR PREPARING UNSATURATED CARBOXYLIC ACID Public/Granted day:2014-06-19
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