WO1992005133A1 - Verfahren zur herstellung von oligoglyceringemischen mit hohem diglyceringehalt - Google Patents
Verfahren zur herstellung von oligoglyceringemischen mit hohem diglyceringehalt Download PDFInfo
- Publication number
- WO1992005133A1 WO1992005133A1 PCT/EP1991/001696 EP9101696W WO9205133A1 WO 1992005133 A1 WO1992005133 A1 WO 1992005133A1 EP 9101696 W EP9101696 W EP 9101696W WO 9205133 A1 WO9205133 A1 WO 9205133A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- silicate compounds
- water
- condensation
- formula
- glycerol
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/09—Preparation of ethers by dehydration of compounds containing hydroxy groups
Definitions
- the invention relates to a process for the preparation of oligoglycerol mixtures with a high diglycerol content by condensation of glycerol in the presence of silicate compounds.
- Diglycerin has gained great importance as a starting material for the production of fatty acid esters.
- esters are used as emulsifiers in the food industry and cosmetics and in various technical applications, for example as a lubricant or stabilizer for PVC [J.Am.Oil. Che. Soc. 66, 153 (1989)].
- diglycerin is generally based on glycerin which is reacted with glycidol [fats, soaps, paints, 88 101 (1986)] or epichlorohydrin [EP-A-0 333 984].
- glycidol fats, soaps, paints, 88 101 (1986)
- epichlorohydrin EP-A-0 333 984.
- the reaction is not very selective, and glycidol and epichlorohydrin are difficult to handle and place high demands on occupational safety.
- glycerol can be condensed in the presence of alkali bases. In this way, however, only mixtures are obtained which, in addition to diglycerol, contain even higher homologues and not negligible amounts of unreacted glycerol. Since the diglycerin has to be separated from these mixtures by distillation, which is associated with a high expenditure of time and energy, the object of the invention was to develop an improved process according to which oligoglycerol mixtures with a high diglycerol content are made available can.
- the invention relates to a process for the preparation of oligoglycerol mixtures with a high diglycerol content, characterized in that glycerol is condensed in the presence of silicate compounds, the water of condensation is continuously removed from the reaction mixture and the reaction is terminated as soon as that theoretically required for the formation of diglycerol Amount of water has been separated.
- M stands for lithium, sodium or potassium
- n stands for whole or fractional numbers greater than 0 as well
- n 1 and x is 0 or integers from 1 to 20,
- the amorphous alkali silicates are glassy, water-soluble salts of silicic acid which have solidified from the melt flow. Their production is described, for example, in R ⁇ MPP's Chemie Lexikon, 8th edition, Franckh-Kosmos, Stuttgart, Vol. 6, p. 4593.
- alkali silicates with a low SiO 2: M2O or m: n ratio (“basic” water glasses), as well as those with a high m: n ratio ("neutral” or “acidic” Water glasses ") are used.
- the ratio SiO 2: M 0 is also referred to as the" module "of the silicate.
- the crystalline alkali metal silicates are also known substances. They have a layered structure and are accessible, for example, by sintering alkali water glass or by hydrothermal reactions [Glastechn.Ber., 37 194 (1964)].
- crystalline alkali metal silicates which catalyze the self-condensation of glycerol in the sense of the process according to the invention, z. B. Makatit (Na S ⁇ ' 4 ⁇ g • 5 H 2 0), Kenyait (Na2Si 22 ⁇ 45 • 10 H 2 0) or Ilerit (Na 2 S ⁇ * 8 ⁇ i7 • 9 H 2 0) into consideration [American mineral. 38, 163 (1953)].
- the silicate compounds can be used as solids or also in the form of aqueous solutions with solids contents of 1 to 80, preferably 30 to 60% by weight, based on the silicate compound.
- the silicate compounds are used in the condensation in amounts of 1 to 10, preferably 2 to 5,% by weight, based on the glycerol.
- the condensation of the glycerol is carried out at temperatures from 200 to 260, preferably 240 to 250 ° C.
- glycerol and silicate compound are introduced and heated to the reaction temperature in an inert gas atmosphere.
- the water of condensation formed is separated off, for example, using a water separator.
- the reaction is stopped when the amount of water theoretically required for the formation of diglycerin has been separated off.
- the catalysts are used in the form of aqueous solutions in the condensation reaction, their water content must be taken into account when calculating the theoretical amount of condensation water for diglycerol formation.
- the reaction time is 1 to 30, preferably 3 to 15 hours.
- the catalyst can be separated from the reaction mixture, for example by filtering or centrifuging; this can also be dispensed with for a large number of applications.
- the diglycerin is separated from the oligoglycerol mixture formed, for example, by distillation in a high vacuum. For a large number of applications, however, the oligoglycerol mixtures according to the invention can be used without further separation.
- VI potassium hydroxide was used instead of a silicate compound.
- module weight ratio Si0 2 : Na 2 0
- Tri triglycerin
- Tetra tetraglycerin
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4029323.8 | 1990-09-15 | ||
| DE19904029323 DE4029323A1 (de) | 1990-09-15 | 1990-09-15 | Vefahren zur herstellung von oligoglyceringemischen mit hohem diglyceringehalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1992005133A1 true WO1992005133A1 (de) | 1992-04-02 |
Family
ID=6414330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1991/001696 Ceased WO1992005133A1 (de) | 1990-09-15 | 1991-09-06 | Verfahren zur herstellung von oligoglyceringemischen mit hohem diglyceringehalt |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0548104A1 (de) |
| JP (1) | JPH06500773A (de) |
| CA (1) | CA2091687A1 (de) |
| DE (1) | DE4029323A1 (de) |
| WO (1) | WO1992005133A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993025511A1 (de) * | 1992-06-12 | 1993-12-23 | Henkel Kommanditgesellschaft Auf Aktien | Verfahren zur herstellung von oligoglyceringemischen mit erhöhtem diglyceringehalt |
| EP0732318A1 (de) * | 1995-03-15 | 1996-09-18 | Nexus A/S | Verfahren zur Herstellung von Oligomeren und/oder Polymerenpolyolverbindungen und ihre Anwendung in der Herstellung von Emulgatoren und oberflächenaktiven Mitteln |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4409569C1 (de) * | 1994-03-21 | 1995-08-10 | Henkel Kgaa | Polyglycerinpolyricinoleate |
| DE4420516C2 (de) * | 1994-06-13 | 1998-10-22 | Henkel Kgaa | Polyglycerinpolyhydroxystearate |
| DE19533539A1 (de) | 1995-09-11 | 1997-03-13 | Henkel Kgaa | O/W-Emulgatoren |
| DE19641604C1 (de) | 1996-10-09 | 1998-03-12 | Goldschmidt Ag Th | Polyglycerinpartialester von Fettsäuren und mehrfunktionellen Carbonsäuren, deren Herstellung und Verwendung |
| EP2743337B1 (de) | 2012-12-14 | 2016-10-12 | Cognis IP Management GmbH | Oberflächenaktive polyglycerinderivate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB265147A (en) * | 1926-01-27 | 1928-02-09 | Henkel & Cie Gmbh | Improved manufacture of a glycerine poor in poly-glycerines and containing di-glycerine |
| US2487208A (en) * | 1946-12-23 | 1949-11-08 | Colgate Palmolive Peet Co | Preparation of diglycerol |
-
1990
- 1990-09-15 DE DE19904029323 patent/DE4029323A1/de not_active Withdrawn
-
1991
- 1991-09-06 EP EP19910914912 patent/EP0548104A1/de not_active Withdrawn
- 1991-09-06 JP JP3514348A patent/JPH06500773A/ja active Pending
- 1991-09-06 CA CA 2091687 patent/CA2091687A1/en not_active Abandoned
- 1991-09-06 WO PCT/EP1991/001696 patent/WO1992005133A1/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB265147A (en) * | 1926-01-27 | 1928-02-09 | Henkel & Cie Gmbh | Improved manufacture of a glycerine poor in poly-glycerines and containing di-glycerine |
| US2487208A (en) * | 1946-12-23 | 1949-11-08 | Colgate Palmolive Peet Co | Preparation of diglycerol |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993025511A1 (de) * | 1992-06-12 | 1993-12-23 | Henkel Kommanditgesellschaft Auf Aktien | Verfahren zur herstellung von oligoglyceringemischen mit erhöhtem diglyceringehalt |
| EP0732318A1 (de) * | 1995-03-15 | 1996-09-18 | Nexus A/S | Verfahren zur Herstellung von Oligomeren und/oder Polymerenpolyolverbindungen und ihre Anwendung in der Herstellung von Emulgatoren und oberflächenaktiven Mitteln |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06500773A (ja) | 1994-01-27 |
| DE4029323A1 (de) | 1992-03-19 |
| EP0548104A1 (de) | 1993-06-30 |
| CA2091687A1 (en) | 1992-03-16 |
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