发明授权
- 专利标题： Method for production of (meth) acrylic acid
- 专利标题（中）： （甲基）丙烯酸的制造方法
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申请号： US10859036申请日： 2004-06-02
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公开(公告)号： US07332626B2公开(公告)日： 2008-02-19
- 发明人: Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
- 申请人： Harunori Hirao , Kouji Ueno , Naoki Serata , Takeshi Yokogoshiya
- 申请人地址： JP Osaka
- 专利权人： Nippon Shokubai Co., Ltd.
- 当前专利权人： Nippon Shokubai Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Mathews, Shepherd, McKay & Bruneau, P.A.
- 优先权： JP2003-160767 20030605
- 主分类号： C07C51/42
- IPC分类号： C07C51/42
摘要：
A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic acid to the reactor and discarding the remainder to the out side of system while the gas is cooled before circulation to the reactor. By the method, the acrylic acid-containing solution of high concentration is obtained due to decrease of an acrylic acid loss.
公开/授权文献
- US20040249202A1 Method for production of (meth) acrylic acid 公开/授权日：2004-12-09