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:
Oct. 13, 2009
Filed:
May. 08, 2008
Ling LU, Taoyuan Hsien, TW;
Shu-cheng Liao, Taipei Hsien, TW;
Ching-hung Chen, Taichung, TW;
Yu-sen Hou, Kaohsiung Hsien, TW;
Kai-chiang Huang, Taoyuan Hsien, TW;
Yu-chin Lee, Taipei, TW;
Ling Lu, Taoyuan Hsien, TW;
Shu-Cheng Liao, Taipei Hsien, TW;
Ching-Hung Chen, Taichung, TW;
Yu-Sen Hou, Kaohsiung Hsien, TW;
Kai-Chiang Huang, Taoyuan Hsien, TW;
Yu-Chin Lee, Taipei, TW;
UFC Corporation, Taiwan, unknown;
Abstract
A method for synthesizing 4,4-dihalogen-2-(dialkylamino)methylene-3-oxy-alkylbutyrate and its derivatives has acts of: (a) providing N,N-dialkylamino-alkyl-acrylate in a reaction vessel; (b) adding organic alkali, organic solvent and multiple molecular sieves into the reaction vessel; (c) mixing N,N-dialkylamino-alkyl-acrylate, the organic alkali, the organic solvent and the molecular sieves; and (d) adding 2,2-dihalogen-acetyl-chloride into the reaction vessel and allowing a synthetic reaction of 2,2-dihalogen-acetyl-chloride and N,N-dialkylamino-alkyl-acrylate to obtain 4,4-dihalogen-2-(dialkylamino)methylene-3-oxy-alkylbutyrate. The molecular sieves are able to remove water efficiently to prevent materials in the reaction vessel from undergoing side reactions or changing chemical properties. Furthermore, the molecular sieves are able to adsorb chloride to avoid polymerization reactions for improved yield.