BE831976A - Procede de preparation de l'acide glycolique et de ses polymeres - Google Patents
Procede de preparation de l'acide glycolique et de ses polymeresInfo
- Publication number
- BE831976A BE831976A BE158819A BE158819A BE831976A BE 831976 A BE831976 A BE 831976A BE 158819 A BE158819 A BE 158819A BE 158819 A BE158819 A BE 158819A BE 831976 A BE831976 A BE 831976A
- Authority
- BE
- Belgium
- Prior art keywords
- polymers
- glycolic acid
- preparing glycolic
- preparing
- acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/10—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide
- C07C51/12—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide on an oxygen-containing group in organic compounds, e.g. alcohols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Polyesters Or Polycarbonates (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT25846/74A IT1017804B (it) | 1974-08-01 | 1974-08-01 | Procedimento per la preparazione di acido glicolico e suoi polimeri |
Publications (1)
Publication Number | Publication Date |
---|---|
BE831976A true BE831976A (fr) | 1976-02-02 |
Family
ID=11217908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE158819A BE831976A (fr) | 1974-08-01 | 1975-07-31 | Procede de preparation de l'acide glycolique et de ses polymeres |
Country Status (8)
Country | Link |
---|---|
US (1) | US4052452A (it) |
JP (1) | JPS5141327A (it) |
BE (1) | BE831976A (it) |
DE (1) | DE2534073A1 (it) |
ES (1) | ES439894A1 (it) |
FR (1) | FR2280624A1 (it) |
IT (1) | IT1017804B (it) |
NL (1) | NL7508960A (it) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7712391A (nl) * | 1976-11-15 | 1978-05-17 | Hoechst Ag | Werkwijze voor het bereiden van glycolzuur. |
US4128575A (en) * | 1976-11-15 | 1978-12-05 | Hoechst Aktiengesellschaft | Process for the manufacture of glycolic acid or its esters |
JPS5746934A (en) * | 1980-09-03 | 1982-03-17 | Agency Of Ind Science & Technol | Preparation of glycolic acid and its ester |
JPH0610252B2 (ja) * | 1985-08-21 | 1994-02-09 | 和光純薬工業株式会社 | 重合体の製造法 |
US4824997A (en) * | 1988-01-25 | 1989-04-25 | Monsanto Company | Method for preparation of alkyl glycolates |
CN100354042C (zh) * | 2001-11-08 | 2007-12-12 | 三菱化学株式会社 | 复合氧化物催化剂及其制备方法 |
US9227896B2 (en) | 2010-08-18 | 2016-01-05 | Eastman Chemical Company | Process for the separation and purification of a mixed diol stream |
US8829248B2 (en) | 2010-08-18 | 2014-09-09 | Eastman Chemical Company | Method for recovery and recycle of ruthenium homogeneous catalysts |
US8466328B2 (en) | 2010-08-18 | 2013-06-18 | Eastman Chemical Company | Method for recovery and recycle of ruthenium homogeneous catalysts |
US8785686B2 (en) | 2010-09-23 | 2014-07-22 | Eastman Chemical Company | Process for recovering and recycling an acid catalyst |
US8709376B2 (en) | 2010-09-23 | 2014-04-29 | Eastman Chemical Company | Process for recovering and recycling an acid catalyst |
US8927766B2 (en) | 2012-03-27 | 2015-01-06 | Eastman Chemical Company | Hydrocarboxylation of methylene dipropionate in the presence of a propionic acid and a homogeneous catalyst |
US8829234B2 (en) | 2012-03-27 | 2014-09-09 | Eastman Chemical Company | Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and heterogeneous catalyst |
US8703999B2 (en) | 2012-03-27 | 2014-04-22 | Eastman Chemical Company | Hydrocarboxylation of methylene dipropionate in the presence of propionic acid and a heterogeneous catalyst |
US8765999B2 (en) | 2012-03-27 | 2014-07-01 | Eastman Chemical Company | Hydrocarboxylation of formaldehyde in the presence of a higher order carboxylic acid and a homogeneous catalyst |
US9040748B2 (en) | 2012-06-08 | 2015-05-26 | Eastman Chemical Company | Hydrocarboxylation of aqueous formaldehyde using a dehydrating recycle stream to decrease water concentration |
GB201505981D0 (en) | 2015-04-08 | 2015-05-20 | Johnson Matthey Davy Technologies Ltd | Process |
GB201505977D0 (en) | 2015-04-08 | 2015-05-20 | Johnson Matthey Davy Technologies Ltd | Catalyst system and process |
GB201615762D0 (en) * | 2016-09-16 | 2016-11-02 | Johnson Matthey Davy Technologies Ltd | Process |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2152852A (en) * | 1936-12-31 | 1939-04-04 | Du Pont | Process for manufacture of glycolic acid |
US2443482A (en) * | 1946-08-06 | 1948-06-15 | Du Pont | Continuous glycolic acid process |
US3754028A (en) * | 1972-08-21 | 1973-08-21 | Chevron Res | Glycolic acid production |
-
1974
- 1974-08-01 IT IT25846/74A patent/IT1017804B/it active
-
1975
- 1975-07-28 NL NL7508960A patent/NL7508960A/xx unknown
- 1975-07-29 US US05/600,044 patent/US4052452A/en not_active Expired - Lifetime
- 1975-07-30 FR FR7523766A patent/FR2280624A1/fr active Granted
- 1975-07-30 DE DE19752534073 patent/DE2534073A1/de active Pending
- 1975-07-31 BE BE158819A patent/BE831976A/xx unknown
- 1975-07-31 ES ES439894A patent/ES439894A1/es not_active Expired
- 1975-08-01 JP JP50094134A patent/JPS5141327A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2280624B1 (it) | 1977-12-09 |
DE2534073A1 (de) | 1976-02-12 |
NL7508960A (nl) | 1976-02-03 |
US4052452A (en) | 1977-10-04 |
FR2280624A1 (fr) | 1976-02-27 |
IT1017804B (it) | 1977-08-10 |
ES439894A1 (es) | 1977-03-01 |
JPS5141327A (en) | 1976-04-07 |
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