Title:
POLYMERIZATION INHIBITOR COMPOSITION OF (METH)ACRYLIC ACID ESTER AND METHOD FOR PREVENTING POLYMERIZATION OF (METH)ACRYLIC ACID ESTER USING THE SAME COMPOSITION
Document Type and Number:
Japanese Patent JP3312639
Kind Code:
B2
Abstract:
PURPOSE: To exhibit sufficient polymerization inhibiting effect in a small amount even in steps in which a (meth)acrylic acid ester is readily polymerizable by combinedly using a p-phenylene-diamine compound, a phenol compound and phenothiazine.
CONSTITUTION: This polymerization inhibitor composition is obtained by combining a p-phenylenediamine compound of the formula (R1 and R2 are each a 1-8C alkyl, phenyl or a 1-4C alkyl groupsubstituted phenyl), a phenol compound and a phenothiazine. N,N-Diphenyl-p-phenylenediamine, etc., is preferably used as the p-phenylenediamine compound. Hydroquinone, metoquinone, etc., is preferably used as the phenol compound. A blend weight ratio of these three compounds is preferably 1:(0.3 to 3):(0.3-3). The distillation is carried out in the presence of the polymerization inhibitor composition and oxygen when (meth)acrylic acid is distilled to inhibit polymerization of (meth)acrylic acid ester.
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Inventors:
Kazuhiko Sakamoto
Masahiro Uemura
Takahiro Takeda
Masatoshi Ueoka
Masahiro Uemura
Takahiro Takeda
Masatoshi Ueoka
Application Number:
JP20840094A
Publication Date:
August 12, 2002
Filing Date:
September 01, 1994
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C07D279/36; C07C50/04; C07C67/62; C07C69/54; C08F2/38; C08F2/40; (IPC1-7): C07C67/62; C07C69/54
Domestic Patent References:
| JP5194614A | ||||
| JP6234700A | ||||
| JP2248402A | ||||
| JP1230543A | ||||
| JP2193944A | ||||
| JP217151A | ||||
| JP5033042B1 |
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