JP5105762B2 - カルボン酸ビニルの重合抑制方法 - Google Patents
カルボン酸ビニルの重合抑制方法 Download PDFInfo
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- JP5105762B2 JP5105762B2 JP2006109927A JP2006109927A JP5105762B2 JP 5105762 B2 JP5105762 B2 JP 5105762B2 JP 2006109927 A JP2006109927 A JP 2006109927A JP 2006109927 A JP2006109927 A JP 2006109927A JP 5105762 B2 JP5105762 B2 JP 5105762B2
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- vinyl
- oxyl
- polymerization
- vinyl carboxylate
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Description
Claims (3)
- カルボン酸ビニルの貯蔵工程または輸送工程において、カルボン酸ビニルに対して、0.1ppm以上300ppm以下のピペリジン−1−オキシル化合物を添加し、系内の酸素濃度を10ppm以上とすることを特徴とするカルボン酸ビニルの重合抑制方法。
- 前記カルボン酸ビニルが、一般式(1)
R1−COO−CR2=CH2(1)
(式中、R1はハロゲンを有することのあるメチル、エチル、炭素鎖3〜20の直鎖状、分岐状もしくは環状の飽和もしくは不飽和の脂肪族炭化水素基及び炭素数6〜10の芳香族炭化水素基からなる群より選ばれる炭化水素基を示し、R2は水素原子、メチルまたはエチルを示す。)
で表されることを特徴とする請求項1に記載の方法。 - 前記ピペリジン−1−オキシル化合物が、2,2,6,6−テトラメチルピペリジン−1−オキシル、およびヒドロキシ、メトキシ、エトキシ、カルボキシ、カルバモイルまたはフェノキシを4位に有する4−置換−2,2,6,6−テトラメチルピペリジン−1−オキシルからなる群より選ばれる少なくとも1の化合物であることを特徴とする請求項1または2に記載の方法。
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JP2006109927A JP5105762B2 (ja) | 2006-04-12 | 2006-04-12 | カルボン酸ビニルの重合抑制方法 |
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JP2006109927A JP5105762B2 (ja) | 2006-04-12 | 2006-04-12 | カルボン酸ビニルの重合抑制方法 |
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JP2007284355A JP2007284355A (ja) | 2007-11-01 |
JP5105762B2 true JP5105762B2 (ja) | 2012-12-26 |
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Families Citing this family (1)
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WO2010016540A1 (ja) | 2008-08-08 | 2010-02-11 | 昭和電工株式会社 | イソシアネート基を含むエチレン性不飽和カルボン酸エステル化合物の重合抑制方法および製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1807738C3 (de) * | 1968-11-08 | 1973-10-31 | Bayer Ag, 5090 Leverkusen | Verfahren zur Gewinnung von reinem Vinylacetat |
JPS4995905A (ja) * | 1973-01-29 | 1974-09-11 | ||
US5545786C1 (en) * | 1994-11-28 | 2001-10-16 | Ciba Geigy Corp | Method for inhibiting premature polymerization of vinyl aromatic monomers |
EP0791573A1 (en) * | 1996-02-21 | 1997-08-27 | Nalco/Exxon Chemicals Company L.P. | Nitroxides as antipolymerants for vinyl acetate units |
JP4493063B2 (ja) * | 2000-03-02 | 2010-06-30 | 伯東株式会社 | スチレンの重合抑制方法 |
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