WO1997046528A1 - Sterisch gehindertes 4-amino-piperidin mit geringem dimergehalt, seine herstellung und verwendung - Google Patents
Sterisch gehindertes 4-amino-piperidin mit geringem dimergehalt, seine herstellung und verwendung Download PDFInfo
- Publication number
- WO1997046528A1 WO1997046528A1 PCT/EP1997/002763 EP9702763W WO9746528A1 WO 1997046528 A1 WO1997046528 A1 WO 1997046528A1 EP 9702763 W EP9702763 W EP 9702763W WO 9746528 A1 WO9746528 A1 WO 9746528A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piperidine
- formula
- alkyl
- amino
- reducing agent
- 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.)
- Ceased
Links
- 0 C*C(*)(C1)NC(C)(*)CC1=NC1CC([*+])(*)NC(*)(*)C1 Chemical compound C*C(*)(C1)NC(C)(*)CC1=NC1CC([*+])(*)NC(*)(*)C1 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D211/56—Nitrogen atoms
- C07D211/58—Nitrogen atoms attached in position 4
Definitions
- the invention relates to a method for reducing the dimer formation of piperidines of the formula I.
- R 1 to R 4 to C CJ fl alkyl, R 1 and R: and / or R 1 and R 4 together are a CH-C atoms with 2 to 5 chain.
- the invention further relates to a mixture which contains a piperidine of the formula I, 1 to 1000 ppm of a dimer II and 0.001 to 0.2% by weight of a reducing agent, and the use thereof for the preparation of HALS stabilizers.
- Sterically hindered 4-amino-piperidines of the general formula I are generally prepared on an industrial scale from acetone or acetone derivatives. You can I in one stage in a catalytic ring closure reaction in the presence of ammonia and hydrogen from the compounds
- the purification of the sterically hindered 4-amino-piperidine produced industrially is generally carried out by distillation.
- the sterically hindered 4-amino-piperidine of the general formula I is used in many ways. It is used in particular as an intermediate in the manufacture of UV stabilizers for synthetic polymers.
- HALS Hindered Amine Light Stabilizer
- the piperidine I has a high chemical purity. This is especially true when piperidine I is used to manufacture HALS stabilizers, since their product quality and thus the quality of the stabilized polymers crucially depend on the chemical purity.
- the dimer of piperidine I which is colorless, is a troublesome by-product that forms from intolerable amounts of the piperidine I even during storage at room temperature, even under protective gas in the dark.
- DD 266 799 describes the cleaning of piperidines I in acetone / water solution with CO; implement, separate the precipitate, wash with acetone, then thermally decompose and purify the product by distillation.
- Another cleaning process for sterically hindered 4-amino-piperidine I is described in SU 18 11 527.
- the contaminated crude product is dissolved in an aprotic solvent, reacted with ethylene glycol, the reaction product is distilled and purified in several steps. Both methods are extremely complex and cost-intensive. They in no way prevent the disruptive replication of the dimer.
- the object of the present invention was therefore to prevent or suppress the dimerization of piperidine I.
- the above-mentioned process was found, which is characterized in that the piperidine I 0.001 to 0.2 wt .-%, based on the piperidine I of a reducing agent of the formula MXH 4 - m Y m , in which M is an alkali metal, NR 4 , where R is the same or different Ci-C ⁇ alkyl groups, or an equivalent of an alkaline earth metal or an equivalent of zinc, X boron or aluminum, YH or CN and m 0 or 1.
- M is an alkali metal
- NR 4 where R is the same or different Ci-C ⁇ alkyl groups, or an equivalent of an alkaline earth metal or an equivalent of zinc, X boron or aluminum, YH or CN and m 0 or 1.
- the radicals R 1 , R 2 , R 3 and R 4 are, independently of one another, preferably C 1 -C 4 -alkyl, in particular ethyl or methyl, for example methyl.
- the amount of the reducing agent which is added to the piperidine I is preferably 10 to 1000 ppm, sometimes up to 500 ppm, in particular up to 200 ppm, based on the piperidine I. In some cases the reducing agent can also be present in amounts of over 50 ppm , in particular over 100 ppm, based in each case on piperidine I, are added.
- the reducing agent can be added all at once or in batches to an initial charge which contains the piperidine I and mixed in, for example by stirring. This can be done batchwise or continuously, the latter for example also by metering in the reducing agent into a product stream which Contains or consists of piperidine I. In principle, it is also conceivable to exchange the substance that has been added and added. Temperature and pressure are not critical; the reducing agent can be added in the customary process steps for the preparation of the piperidine I, for example during or in particular after the distillation step which serves for the final purification of the piperidine I in the production process.
- the reducing agent can be added in powder form or as a solution, for example dissolved in pure piperidine I.
- the mixture of substances according to claim 5, consisting of piperidine I, dimer II and reducing agent, can be prepared in a simple manner by firstly removing crude piperidine I from the dimer II in the desired manner by distillation. This can be done, for example, by distillation since the dimer II has a significantly higher boiling point than the piperidine I.
- the person skilled in the art can easily determine the content of dimers, for example by gas chromatography analysis. The reducing agent is then added as described.
- HALS stabilizers are generally prepared from the mixture of substances according to the invention by alkylation or acylation of piperidine I on the nitrogen atom of the 4-amino group in a conventional manner.
- TAD pure fraction (TAD content according to GC: 99.7%) was stored and measured on the one hand without addition of sodium boron hydride and on the other hand after addition of 1000 ppm of sodium borohydride under identical conditions. The result is shown in the following table:
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Hydrogenated Pyridines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Saccharide Compounds (AREA)
Abstract
Description
Claims
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UA98126947A UA54430C2 (uk) | 1996-06-03 | 1997-05-28 | Спосіб зниження утворення димеру піперидину та суміш на основі піперидину |
| EA199801029A EA001211B1 (ru) | 1996-06-03 | 1997-05-28 | Способ ингибирования димеризации 4-аминопиперидина, композиция, содержащая ингибитор и её применение |
| HU0001825A HUP0001825A2 (hu) | 1996-06-03 | 1997-05-28 | Alacsony dimer-tartalmú sztérikusan gátolt 4-amino-piperidin-származékok, előállításuk és alkalmazásuk |
| PL97330276A PL189193B1 (pl) | 1996-06-03 | 1997-05-28 | Sposób zmniejszania dimeryzacji 4-aminopiperydyn,mieszanina zawierająca 4-aminopiperydynę i jej zastosowanie |
| AT97927060T ATE192434T1 (de) | 1996-06-03 | 1997-05-28 | Sterisch gehindertes 4-amino-piperidin mit geringem dimergehalt, seine herstellung und verwendung |
| US09/180,580 US6013803A (en) | 1996-06-03 | 1997-05-28 | Sterically hindered 4-amino-piperidine with a low dimer content, its production and use |
| NZ332521A NZ332521A (en) | 1996-06-03 | 1997-05-28 | Use of a reducing agent to prevent dimerization of a sterically hindered 4-amino-piperidine |
| DE59701590T DE59701590D1 (de) | 1996-06-03 | 1997-05-28 | Sterisch gehindertes 4-amino-piperidin mit geringem dimergehalt, seine herstellung und verwendung |
| BR9709519A BR9709519A (pt) | 1996-06-03 | 1997-05-28 | Processo para redução da dimerização de peperidinas mistura e processo para utilização da mesma |
| CA002257094A CA2257094C (en) | 1996-06-03 | 1997-05-28 | Sterically hindered 4-amino-piperidine with a low dimer content, its production and use |
| EP97927060A EP0906280B1 (de) | 1996-06-03 | 1997-05-28 | Sterisch gehindertes 4-amino-piperidin mit geringem dimergehalt, seine herstellung und verwendung |
| AU31687/97A AU711518B2 (en) | 1996-06-03 | 1997-05-28 | Sterically hindered 4-aminopiperidines having a reduced dimer content, their preparation and their use |
| JP10500198A JP2000515123A (ja) | 1996-06-03 | 1997-05-28 | 二量体低含有量の立体障害4―アミノピペリジン、その製造および使用 |
| GR20000401142T GR3033454T3 (en) | 1996-06-03 | 2000-05-19 | Sterically hindered 4-amino-piperidine with a low dimer content, its production and use |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19622268A DE19622268C1 (de) | 1996-06-03 | 1996-06-03 | Sterisch gehindertes 4-Amino-piperidin mit geringem Dimergehalt, seine Herstellung und Verwendung |
| DE19622268.0 | 1996-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997046528A1 true WO1997046528A1 (de) | 1997-12-11 |
Family
ID=7796030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1997/002763 Ceased WO1997046528A1 (de) | 1996-06-03 | 1997-05-28 | Sterisch gehindertes 4-amino-piperidin mit geringem dimergehalt, seine herstellung und verwendung |
Country Status (23)
| Country | Link |
|---|---|
| US (1) | US6013803A (de) |
| EP (1) | EP0906280B1 (de) |
| JP (1) | JP2000515123A (de) |
| CN (1) | CN1088697C (de) |
| AT (1) | ATE192434T1 (de) |
| AU (1) | AU711518B2 (de) |
| BR (1) | BR9709519A (de) |
| CA (1) | CA2257094C (de) |
| CO (1) | CO5050411A1 (de) |
| CZ (1) | CZ291453B6 (de) |
| DE (2) | DE19622268C1 (de) |
| EA (1) | EA001211B1 (de) |
| ES (1) | ES2146471T3 (de) |
| GR (1) | GR3033454T3 (de) |
| HU (1) | HUP0001825A2 (de) |
| ID (1) | ID17018A (de) |
| MY (1) | MY121628A (de) |
| NZ (1) | NZ332521A (de) |
| PL (1) | PL189193B1 (de) |
| PT (1) | PT906280E (de) |
| TW (1) | TW372970B (de) |
| UA (1) | UA54430C2 (de) |
| WO (1) | WO1997046528A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7117776B1 (en) | 1999-11-10 | 2006-10-10 | Sms Demag Ag | High-speed shear for transverse cutting of a rolled strip |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007117664A2 (en) * | 2006-04-06 | 2007-10-18 | Dow Global Technologies, Inc. | Adhesion-modified expandable polyolefin compositions and insulated vehicle parts containing expanded adhesion-modified polyolefin compositions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4316837A (en) * | 1980-09-10 | 1982-02-23 | Carstab Corporation | Polyalkylated 4-aminopiperidine derivatives as stabilizers for synthetic polymers |
| EP0477593A1 (de) * | 1990-09-24 | 1992-04-01 | Elf Atochem North America, Inc. | Reinigung und Entfärbung von fehlfarbigen Alkyl-Alkanolaminen |
| DE4239437A1 (de) * | 1992-11-24 | 1994-05-26 | Basf Ag | Maleinsäureimid-alpha-Olefin-Copolymerisate und ihre Verwendung als Lichtschutzmittel und Stabilisatoren für organisches Material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3207790A (en) * | 1961-07-06 | 1965-09-21 | Dow Chemical Co | Process for reducing the color of discolored alkanolamines |
| NL266799A (de) * | 1961-07-07 | |||
| US3159276A (en) * | 1963-05-03 | 1964-12-01 | Allied Chem | Ethanolamines |
| DE3003843A1 (de) * | 1980-02-02 | 1981-08-13 | Chemische Werke Hüls AG, 4370 Marl | Verfahren zur herstellung von 4-amino-2,2,6,6-tetramethylpiperidin |
-
1996
- 1996-06-03 DE DE19622268A patent/DE19622268C1/de not_active Expired - Lifetime
-
1997
- 1997-05-28 CN CN97195198A patent/CN1088697C/zh not_active Expired - Fee Related
- 1997-05-28 AT AT97927060T patent/ATE192434T1/de not_active IP Right Cessation
- 1997-05-28 ES ES97927060T patent/ES2146471T3/es not_active Expired - Lifetime
- 1997-05-28 DE DE59701590T patent/DE59701590D1/de not_active Expired - Fee Related
- 1997-05-28 CZ CZ19983916A patent/CZ291453B6/cs not_active IP Right Cessation
- 1997-05-28 US US09/180,580 patent/US6013803A/en not_active Expired - Fee Related
- 1997-05-28 UA UA98126947A patent/UA54430C2/uk unknown
- 1997-05-28 HU HU0001825A patent/HUP0001825A2/hu unknown
- 1997-05-28 EA EA199801029A patent/EA001211B1/ru not_active IP Right Cessation
- 1997-05-28 NZ NZ332521A patent/NZ332521A/xx unknown
- 1997-05-28 AU AU31687/97A patent/AU711518B2/en not_active Ceased
- 1997-05-28 JP JP10500198A patent/JP2000515123A/ja not_active Withdrawn
- 1997-05-28 PT PT97927060T patent/PT906280E/pt unknown
- 1997-05-28 BR BR9709519A patent/BR9709519A/pt not_active IP Right Cessation
- 1997-05-28 EP EP97927060A patent/EP0906280B1/de not_active Expired - Lifetime
- 1997-05-28 WO PCT/EP1997/002763 patent/WO1997046528A1/de not_active Ceased
- 1997-05-28 PL PL97330276A patent/PL189193B1/pl not_active IP Right Cessation
- 1997-05-28 CA CA002257094A patent/CA2257094C/en not_active Expired - Fee Related
- 1997-05-30 CO CO97030214A patent/CO5050411A1/es unknown
- 1997-05-31 MY MYPI97002411A patent/MY121628A/en unknown
- 1997-06-03 ID IDP971894A patent/ID17018A/id unknown
- 1997-06-03 TW TW086107600A patent/TW372970B/zh active
-
2000
- 2000-05-19 GR GR20000401142T patent/GR3033454T3/el not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4316837A (en) * | 1980-09-10 | 1982-02-23 | Carstab Corporation | Polyalkylated 4-aminopiperidine derivatives as stabilizers for synthetic polymers |
| EP0477593A1 (de) * | 1990-09-24 | 1992-04-01 | Elf Atochem North America, Inc. | Reinigung und Entfärbung von fehlfarbigen Alkyl-Alkanolaminen |
| DE4239437A1 (de) * | 1992-11-24 | 1994-05-26 | Basf Ag | Maleinsäureimid-alpha-Olefin-Copolymerisate und ihre Verwendung als Lichtschutzmittel und Stabilisatoren für organisches Material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7117776B1 (en) | 1999-11-10 | 2006-10-10 | Sms Demag Ag | High-speed shear for transverse cutting of a rolled strip |
Also Published As
| Publication number | Publication date |
|---|---|
| PL189193B1 (pl) | 2005-07-29 |
| JP2000515123A (ja) | 2000-11-14 |
| GR3033454T3 (en) | 2000-09-29 |
| NZ332521A (en) | 1999-06-29 |
| AU711518B2 (en) | 1999-10-14 |
| HUP0001825A2 (hu) | 2000-09-28 |
| CA2257094C (en) | 2005-11-22 |
| CO5050411A1 (es) | 2001-06-27 |
| UA54430C2 (uk) | 2003-03-17 |
| MY121628A (en) | 2006-02-28 |
| CA2257094A1 (en) | 1997-12-11 |
| DE59701590D1 (de) | 2000-06-08 |
| CZ291453B6 (cs) | 2003-03-12 |
| US6013803A (en) | 2000-01-11 |
| AU3168797A (en) | 1998-01-05 |
| ATE192434T1 (de) | 2000-05-15 |
| BR9709519A (pt) | 1999-08-10 |
| CN1088697C (zh) | 2002-08-07 |
| CZ391698A3 (cs) | 1999-11-17 |
| EA199801029A1 (ru) | 1999-06-24 |
| CN1221406A (zh) | 1999-06-30 |
| EP0906280A1 (de) | 1999-04-07 |
| PT906280E (pt) | 2000-10-31 |
| EA001211B1 (ru) | 2000-12-25 |
| ID17018A (id) | 1997-12-04 |
| EP0906280B1 (de) | 2000-05-03 |
| PL330276A1 (en) | 1999-05-10 |
| DE19622268C1 (de) | 1997-10-23 |
| TW372970B (en) | 1999-11-01 |
| ES2146471T3 (es) | 2000-08-01 |
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