The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2006
Filed:
May. 18, 2005
Seok-hwan Choi, Daejeon, KR;
Seong-pil Kang, Daejeon, KR;
Kyoung-su Ha, Daejeon, KR;
Geon-yong Kim, Seoul, KR;
Boo-gon Woo, Daejeon, KR;
Seok-Hwan Choi, Daejeon, KR;
Seong-Pil Kang, Daejeon, KR;
Kyoung-Su Ha, Daejeon, KR;
Geon-Yong Kim, Seoul, KR;
Boo-Gon Woo, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to a facility parts cleaning solution for the processing of (meth)acrylic acid and/or (meth)acrylic esters and a cleaning method using the cleaning solution. An aqueous cleaning composition comprising 5 to 50 wt % of at least one alkali metal hydroxide selected from the group consisting of sodium hydroxide and potassium hydroxide, 0.01 to 1 wt % of a water-soluble amino acid, 0.001 to 0.05 wt % of N,N'-methylene bisacrylamide, and 0.001 to 0.05 wt % of azobisisobutyronitrile is used to clean facility parts for manufacturing (meth)acrylic acid and/or (meth)acrylic esters in order to easily remove polymers and deposits.