GB803060A - Process for the production of lactic acid and derivatives - Google Patents
Process for the production of lactic acid and derivativesInfo
- Publication number
- GB803060A GB803060A GB36857/56A GB3685756A GB803060A GB 803060 A GB803060 A GB 803060A GB 36857/56 A GB36857/56 A GB 36857/56A GB 3685756 A GB3685756 A GB 3685756A GB 803060 A GB803060 A GB 803060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lactic acid
- nitric acid
- mol
- acid
- propylene
- 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
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
- C07C51/275—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids of hydrocarbyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
- C07C51/377—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Lactic acid is prepared by contacting propylene at a temperature below about 40 DEG C. with an oxidizing medium containing at least one mol. of dinitrogen tetroxide (nitrogen dioxide), dinitrogen trioxide or a mixture thereof for each mol. of propylene, and reacting the resulting reaction products with at least one mol. of nitric acid for each mol. of propylene. The nitric acid may be present in the oxidizing medium or may subsequently be added to the reaction products or, preferably, the reaction products added to it. Nitric acid with an HNO3 concentration of 25-100 per cent by weight is suitable. It may be formed in situ, e.g. by reaction of added water with N2O4. When the oxidizing medium contains both nitric acid and the oxidizing agent, reaction temperatures below about 10 DEG C. are desirable. When two steps are used, the first is preferably effected below about 10 DEG C., but the step employing nitric acid may be effected at temperatures as high as 100 DEG C. An hydrolysis step may be necessary to obtain maximum yield of lactic acid. The lactic acid may be dehydrated to acrylic acid and/or esterified, e.g. with alkanols, or esterified then dehydrated. Dehydration may be with P2O5 or by the methods described in Specification 409,733, [Group IV]. An example is given in which the lactic acid is isolated as the calcium salt. Reference has been directed by the Comptroller to Specification 785,152.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556067A US2847464A (en) | 1955-12-29 | 1955-12-29 | Preparation of lactic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB803060A true GB803060A (en) | 1958-10-15 |
Family
ID=24219768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36857/56A Expired GB803060A (en) | 1955-12-29 | 1956-12-03 | Process for the production of lactic acid and derivatives |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2847464A (en) |
| DE (1) | DE1114177B (en) |
| GB (1) | GB803060A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3081345A (en) * | 1960-08-23 | 1963-03-12 | Allied Chem | Production of oxalic acid |
| NL269224A (en) * | 1961-09-14 | |||
| US3456005A (en) * | 1966-05-06 | 1969-07-15 | Wyandotte Chemicals Corp | Preparation of trichlorolactic acid |
| US4022823A (en) * | 1974-07-29 | 1977-05-10 | Chevron Research Company | Citric acid and citramalic acid preparation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2511915A (en) * | 1950-06-20 | Production of chloronitro | ||
| DE742053C (en) * | 1939-04-04 | 1943-11-22 | Dr Paul Busse | Process for the production of oxalic acid |
| NL62760C (en) * | 1943-03-27 | |||
| US2402315A (en) * | 1944-01-04 | 1946-06-18 | Solvay Process Co | Preparation of nitrogen tetroxide addition products |
| US2525353A (en) * | 1946-12-18 | 1950-10-10 | Phillips Petroleum Co | Process for the production of esters |
-
1955
- 1955-12-29 US US556067A patent/US2847464A/en not_active Expired - Lifetime
-
1956
- 1956-12-03 GB GB36857/56A patent/GB803060A/en not_active Expired
- 1956-12-14 DE DEE13378A patent/DE1114177B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US2847464A (en) | 1958-08-12 |
| DE1114177B (en) | 1961-09-28 |
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