JPS54103884A - Preparation of large ring ethylenedioate - Google Patents
Preparation of large ring ethylenedioateInfo
- Publication number
- JPS54103884A JPS54103884A JP880978A JP880978A JPS54103884A JP S54103884 A JPS54103884 A JP S54103884A JP 880978 A JP880978 A JP 880978A JP 880978 A JP880978 A JP 880978A JP S54103884 A JPS54103884 A JP S54103884A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- ethylenedioate
- depolymerization
- polycondensation
- give
- 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.)
- Pending
Links
Landscapes
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
Abstract
PURPOSE: To obtain the title compound useful as musk perfumes of high quailty in a short time in high yield, by depolymerization and ring closure of a polyester prepared through polycondensation of a dibasic fatty acid and ethylene glycol in the presence of a catalyst of an Al compound having a carbonate radical.
CONSTITUTION: CO2 or a substance to generate carbon dioxide, e.g. NaHCO3, is brought into contact with a basic aqueous solution of an Al compound, e.g. Al(OH)3 or aluminum acetate, to give an Al compound having a carbonate radical. A polyester obtained by polycondensation of a dibasic fatty acid of formula I: (n is an integer 6W14) or its ester and ethylene glycol or oxide is subjected to depolymerization and ring closure at a reduced pressure of 10-2W1mmHg at 180W 280°c to give a large ring ethylenedioate of furmula II.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP880978A JPS54103884A (en) | 1978-01-31 | 1978-01-31 | Preparation of large ring ethylenedioate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP880978A JPS54103884A (en) | 1978-01-31 | 1978-01-31 | Preparation of large ring ethylenedioate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54103884A true JPS54103884A (en) | 1979-08-15 |
Family
ID=11703154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP880978A Pending JPS54103884A (en) | 1978-01-31 | 1978-01-31 | Preparation of large ring ethylenedioate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54103884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943023A (en) * | 1982-08-02 | 1984-03-09 | ナシヨナル・デイステイラ−ズ・アンド・ケミカル・コ−ポレ−シヨン | Polyester depolymerization using dawsonite as catalyst |
| US4594434A (en) * | 1982-08-02 | 1986-06-10 | National Distillers And Chemical Corporation | Process for the depolymerization of polyesters using dawsonite as the catalyst |
-
1978
- 1978-01-31 JP JP880978A patent/JPS54103884A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943023A (en) * | 1982-08-02 | 1984-03-09 | ナシヨナル・デイステイラ−ズ・アンド・ケミカル・コ−ポレ−シヨン | Polyester depolymerization using dawsonite as catalyst |
| US4594434A (en) * | 1982-08-02 | 1986-06-10 | National Distillers And Chemical Corporation | Process for the depolymerization of polyesters using dawsonite as the catalyst |
| JPH0434554B2 (en) * | 1982-08-02 | 1992-06-08 | Kuwantamu Chem Corp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB8323962D0 (en) | Preparation of glycol derivatives | |
| JPS54103884A (en) | Preparation of large ring ethylenedioate | |
| JPS54115390A (en) | Preparation of large ring ethylenedioate | |
| JPS559024A (en) | Tetrahydro ml-236b, its derivative, and remedy for hyperlipemia comprising it as active constituent | |
| JPS53147018A (en) | Preparation of carboxylic acid glycidyl ester | |
| JPS5424818A (en) | Preparation of high purity maleic acid monoalcohol ester | |
| JPS5770836A (en) | Preparation of cinnamic acid ester | |
| JPS54132519A (en) | Method of oxidation of glycol | |
| JPS5394334A (en) | Preparation of high purity quinacridone | |
| JPS55120581A (en) | Production of macrocyclic ester | |
| JPS5398923A (en) | Preparation of hydroxyacetic acid | |
| JPS5798232A (en) | 1-(6-methoxy-2-naphthyl)-2-oxy-1-alkanone acetal | |
| JPS5217447A (en) | Process for preparation of trans-4- aminomethylcyclohexane-carboxylic acid ester | |
| JPS5416416A (en) | Preparation of high purity ethylene glycol | |
| JPS52122336A (en) | Preparation of beta-orcyl carboxylic acid esters | |
| JPS52151112A (en) | Preparation of propyleneglycol fatty acid monoester | |
| JPS5556123A (en) | Preparation of polyester | |
| JPS5346916A (en) | Preparation of hydroxyacetic acid | |
| JPS5325504A (en) | Isolation of glycols | |
| JPS5551029A (en) | Preparation of beta-phenetyl alcohol | |
| JPS5683486A (en) | Preparation of 1,3-benzodioxol-5-ol | |
| JPS55136272A (en) | Sesquiterpene derivative and its preparation | |
| JPS5565223A (en) | Production of polyester | |
| JPS52128342A (en) | Continuous esterification of terephthalic acid | |
| JPS5390213A (en) | Preparation of unstd. org. acid glycidylesters |