GB1433400A - Method of inhibiting the polymersation of acrylic acid or its esters - Google Patents
Method of inhibiting the polymersation of acrylic acid or its estersInfo
- Publication number
- GB1433400A GB1433400A GB5762473A GB5762473A GB1433400A GB 1433400 A GB1433400 A GB 1433400A GB 5762473 A GB5762473 A GB 5762473A GB 5762473 A GB5762473 A GB 5762473A GB 1433400 A GB1433400 A GB 1433400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylic acid
- copper
- inhibiting
- dec
- compound selected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
-
- 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
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/62—Use of additives, e.g. for stabilisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
- C08F2/40—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation using retarding agents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polymerisation Methods In General (AREA)
Abstract
1433400 Inhibition of acrylic acid or acrylic acid ester polymerization NIPPON SHOKUBAI KAGAKU KOGYO CO Ltd 12 Dec 1973 [22 Dec 1972] 57624/73 Heading C2C A method for inhibiting the polymerization during distillation of acrylic acid obtained by the vapor phase catalytic oxidation of propylene or acrolein, or of acrylic acid esters derived from said acrylic acid, comprises carrying out the distillation in the presence of (A) at least one compound selected from hydroquinone, hydroquinonemonomethyl ether, cresols, phenols, t.butyl catechol, diphenylamine, a phenothiazine of the formula wherein R 1 and R 2 each separately represents a hydrogen atom or an alkyl group of 1 to 10 carbon atoms and methylene blue, (B) at least one compound selected from copper dimethyldithiocarbamate, copper diethyldithiocarbamate, copper dibutyldithiocarbamate and copper salicylate; and (C) molecular oxygen.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12818472A JPS5234606B2 (en) | 1972-12-22 | 1972-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1433400A true GB1433400A (en) | 1976-04-28 |
Family
ID=14978499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5762473A Expired GB1433400A (en) | 1972-12-22 | 1973-12-12 | Method of inhibiting the polymersation of acrylic acid or its esters |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5234606B2 (en) |
BE (1) | BE808771A (en) |
BR (1) | BR7310015D0 (en) |
CA (1) | CA1013705A (en) |
CS (1) | CS171189B2 (en) |
FR (1) | FR2211440B1 (en) |
GB (1) | GB1433400A (en) |
IT (1) | IT1000592B (en) |
NL (1) | NL160802C (en) |
PL (1) | PL94830B1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2931553A1 (en) * | 1979-08-03 | 1981-02-26 | Basf Ag | METHOD FOR STABILIZING MONOMERIC ACRYLIC ACID ESTERS AGAINST EARLY POLYMERIZATION |
JPS57197684U (en) * | 1981-06-11 | 1982-12-15 | ||
US4915873A (en) * | 1988-01-22 | 1990-04-10 | Uniroyal Chemical Company, Inc. | Polymerization inhibitor composition for vinyl aromatic compounds |
ES2077811T3 (en) * | 1990-11-09 | 1995-12-01 | Nippon Catalytic Chem Ind | INHIBITOR OF POLYMERIZATION AND METHOD OF INHIBITION OF POLYMERIZATION FOR A VINYL COMPOUND. |
JP2001081050A (en) * | 1999-09-10 | 2001-03-27 | Nippon Shokubai Co Ltd | Apparatus and method for handling readily polymerizable compound |
JP2005179352A (en) * | 2003-11-28 | 2005-07-07 | Mitsubishi Chemicals Corp | Method of purifying (meth)acrylic acid |
AU2004293259A1 (en) * | 2003-11-28 | 2005-06-09 | Mitsubishi Chemical Corporation | Method of purifying (meth)acrylic acid |
DE102010042216A1 (en) * | 2010-10-08 | 2011-06-09 | Basf Se | Inhibiting the unwanted radical polymerization of acrylic acid present in a liquid phase, comprises adding a chemical compound of copper to the liquid phase, and the liquid phase additionally contains propionic acid and glyoxal |
JP7204980B1 (en) * | 2022-04-18 | 2023-01-16 | 信越化学工業株式会社 | Method for purifying siloxane containing hydroxyl group and (meth)acrylic group, and siloxane composition containing hydroxyl group and (meth)acrylic group |
-
1972
- 1972-12-22 JP JP12818472A patent/JPS5234606B2/ja not_active Expired
-
1973
- 1973-12-12 GB GB5762473A patent/GB1433400A/en not_active Expired
- 1973-12-18 NL NL7317334A patent/NL160802C/en not_active IP Right Cessation
- 1973-12-18 BE BE138988A patent/BE808771A/en not_active IP Right Cessation
- 1973-12-20 BR BR1001573A patent/BR7310015D0/en unknown
- 1973-12-21 FR FR7345893A patent/FR2211440B1/fr not_active Expired
- 1973-12-21 PL PL16756273A patent/PL94830B1/en unknown
- 1973-12-21 CA CA188,746A patent/CA1013705A/en not_active Expired
- 1973-12-21 IT IT7081573A patent/IT1000592B/en active
- 1973-12-22 CS CS896873A patent/CS171189B2/cs unknown
Also Published As
Publication number | Publication date |
---|---|
FR2211440B1 (en) | 1976-10-08 |
DE2362373B2 (en) | 1977-06-02 |
JPS5234606B2 (en) | 1977-09-05 |
PL94830B1 (en) | 1977-08-31 |
CS171189B2 (en) | 1976-10-29 |
AU6353073A (en) | 1975-06-12 |
DE2362373A1 (en) | 1974-07-11 |
CA1013705A (en) | 1977-07-12 |
JPS4985016A (en) | 1974-08-15 |
FR2211440A1 (en) | 1974-07-19 |
IT1000592B (en) | 1976-04-10 |
NL160802B (en) | 1979-07-16 |
BR7310015D0 (en) | 1974-08-29 |
BE808771A (en) | 1974-04-16 |
NL160802C (en) | 1979-12-17 |
NL7317334A (en) | 1974-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19931211 |