WO2008152960A1 - 重合防止方法 - Google Patents
重合防止方法 Download PDFInfo
- Publication number
- WO2008152960A1 WO2008152960A1 PCT/JP2008/060295 JP2008060295W WO2008152960A1 WO 2008152960 A1 WO2008152960 A1 WO 2008152960A1 JP 2008060295 W JP2008060295 W JP 2008060295W WO 2008152960 A1 WO2008152960 A1 WO 2008152960A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polymerization
- meth
- pipe
- acrylic acid
- copper salt
- Prior art date
Links
- 238000006116 polymerization reaction Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 3
- 230000005764 inhibitory process Effects 0.000 title 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 3
- 150000001879 copper Chemical class 0.000 abstract 3
- 238000004821 distillation Methods 0.000 abstract 2
- 230000002401 inhibitory effect Effects 0.000 abstract 2
- 239000012266 salt solution Substances 0.000 abstract 2
- 229910000365 copper sulfate Inorganic materials 0.000 abstract 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/50—Use of additives, e.g. for stabilisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
Abstract
本発明は、ジアルキルジチオカルバミン酸銅塩溶液を専用のパイプを通して蒸留塔などへ供給するに際して、パイプ内での析出物の生成を防止し、パイプの詰まりや蒸留塔などでの重合の発生の問題を解決した、（メタ）アクリル酸等の重合防止方法を提供することを目的とする。本発明に係る（メタ）アクリル酸等の重合防止方法は、有機溶媒にジアルキルジチオカルバミン酸銅塩を溶解した溶液を用いて（メタ）アクリル酸および／またはそのエステルの重合を防止するにあたり、該ジアルキルジチオカルバミン酸銅塩溶液中の硫酸銅含量を質量基準で１００ｐｐｍ以下にすることを特徴とする。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/452,018 US7977503B2 (en) | 2007-06-13 | 2008-06-04 | Polymerization inhibition method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-156644 | 2007-06-13 | ||
| JP2007156644A JP5318374B2 (ja) | 2007-06-13 | 2007-06-13 | 重合防止方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008152960A1 true WO2008152960A1 (ja) | 2008-12-18 |
Family
ID=40129566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2008/060295 WO2008152960A1 (ja) | 2007-06-13 | 2008-06-04 | 重合防止方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7977503B2 (ja) |
| JP (1) | JP5318374B2 (ja) |
| WO (1) | WO2008152960A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3841130A4 (en) * | 2018-08-24 | 2022-05-18 | BL Technologies, Inc. | Synergistic combination for inhibiting polymerization |
| JP2021031481A (ja) * | 2019-08-29 | 2021-03-01 | 信越化学工業株式会社 | シリコーンモノマーの製造方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003128646A (ja) * | 2001-10-19 | 2003-05-08 | Tanaka Eng Kk | ジチオカルバミン酸銅（ｉ） |
| JP2004051489A (ja) * | 2002-07-16 | 2004-02-19 | Nippon Shokubai Co Ltd | アクリル酸の製造方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3503856A (en) * | 1968-01-30 | 1970-03-31 | Rotary Plates Ltd | Process for controlling electrodeposition |
| US3877931A (en) * | 1973-07-20 | 1975-04-15 | Daniel R Neskora | Continuous preparation of pure metals by gaseous reduction |
| JP2574109B2 (ja) | 1993-01-21 | 1997-01-22 | 株式会社日本触媒 | （メタ）アクリル酸の重合防止方法 |
| JP3493083B2 (ja) | 1995-10-02 | 2004-02-03 | 出光石油化学株式会社 | ビニル化合物の重合防止方法 |
| TW407145B (en) * | 1995-10-02 | 2000-10-01 | Idemitsu Pertrochemical Co Ltd | Process for inhibiting polymerization of a vinyl compound |
| DE69920329T3 (de) * | 1998-06-19 | 2009-07-09 | Shin-Etsu Chemical Co., Ltd. | Destillationsverfahren für (Meth)acryloxysilane |
| JP4451581B2 (ja) * | 2001-09-28 | 2010-04-14 | 株式会社日本触媒 | 重合防止剤の作成供給装置および作成供給方法 |
-
2007
- 2007-06-13 JP JP2007156644A patent/JP5318374B2/ja active Active
-
2008
- 2008-06-04 WO PCT/JP2008/060295 patent/WO2008152960A1/ja active Application Filing
- 2008-06-04 US US12/452,018 patent/US7977503B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003128646A (ja) * | 2001-10-19 | 2003-05-08 | Tanaka Eng Kk | ジチオカルバミン酸銅（ｉ） |
| JP2004051489A (ja) * | 2002-07-16 | 2004-02-19 | Nippon Shokubai Co Ltd | アクリル酸の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US7977503B2 (en) | 2011-07-12 |
| JP5318374B2 (ja) | 2013-10-16 |
| JP2008308422A (ja) | 2008-12-25 |
| US20100130766A1 (en) | 2010-05-27 |
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