Title:
METHOD FOR MANUFACTURING (METH)ACRYLIC ESTER MIXTURE
Document Type and Number:
WIPO Patent Application WO/2016/035573
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for manufacturing a partially esterified (meth)acrylic ester with a simple method and good yield. A method for manufacturing a (meth)acrylic ester mixture characterized in: comprising Step 1 and Step 2 below; and in the content of a (meth)acrylic ester component having two hydroxyl groups being 15-50 mass% with respect to the total mass of the ester.
Step 1:
An esterification reaction step for obtaining an intermediate mixture from an esterification reaction of a (meth)acrylic acid and a polyhydric alcohol in the presence of an acid catalyst, wherein the amount of water contained in the reaction solution is maintained at a specified value until the reaction percentage based on hydroxyl groups reaches 45% and the esterification reaction is stopped when the reaction percentage is 45-65%.
Step 2:
A neutralization step in which an organic solvent is added to the intermediate mixture and the intermediate mixture is neutralized with an aqueous alkaline solution, the water content in the organic phase separated from the aqueous phase after the neutralization having a specified value.
Inventors:
YAMAGUCHI SHUUHEI (JP)
HASHIMOTO NAOKI (JP)
ONABE TAKAYUKI (JP)
HASHIMOTO NAOKI (JP)
ONABE TAKAYUKI (JP)
Application Number:
PCT/JP2015/073500
Publication Date:
March 10, 2016
Filing Date:
August 21, 2015
Export Citation:
Assignee:
TOAGOSEI CO LTD (JP)
International Classes:
C07C67/08; B01J27/053; B01J31/02; C07C67/60; C07C69/54; C07D251/34; C07B61/00
Foreign References:
| CN103254073A | 2013-08-21 | |||
| JPS5363306A | 1978-06-06 | |||
| JPH06100495A | 1994-04-12 | |||
| JPH01199936A | 1989-08-11 | |||
| JPH11269129A | 1999-10-05 | |||
| JP2000119216A | 2000-04-25 | |||
| JP2007176881A | 2007-07-12 |
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