Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020087220 - GLYCOLIDE PRODUCTION WITH LOW SOLID RESIDUE

Publication Number WO/2020/087220
Publication Date 07.05.2020
International Application No. PCT/CN2018/112473
International Filing Date 29.10.2018
IPC
C08G 63/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
C08G 63/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
06derived from hydroxy carboxylic acids
C08G 63/08 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
06derived from hydroxy carboxylic acids
08Lactones or lactides
C08G 63/16 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
12derived from polycarboxylic acids and polyhydroxy compounds
16Dicarboxylic acids and dihydroxy compounds
C08G 63/685 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
68Polyesters containing atoms other than carbon, hydrogen, and oxygen
685containing nitrogen
C08G 63/83 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
78Preparation processes
82characterised by the catalyst used
83Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
Applicants
  • PUJING CHEMICAL INDUSTRY CO., LTD [CN]/[CN]
Inventors
  • LIU, Wei
Agents
  • SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GLYCOLIDE PRODUCTION WITH LOW SOLID RESIDUE
(FR) PRODUCTION DE GLYCOLIDE PRÉSENTANT UN FAIBLE RÉSIDU SOLIDE
Abstract
(EN)
The invention relates a process of preparing glycolide from a methyl glycolate oligomer. The process comprises pyrolyzing a methyl glycolate oligomer in a pyrolysis reaction system. The pyrolysis reaction system comprises no more than 1 wt%of a polyester, a polyol, a polyacid or a combination thereof, based on the total weight of the methyl glycolate oligomer in the system. Also provided is a composition comprising greater than 90 wt%of methyl glycolate and no more than 1 wt%of a combination of the polyester, the polyol, and the polyacid, based on the weight of the composition.
(FR)
L'invention concerne un procédé de préparation de glycolide à partir d'un oligomère de glycolate de méthyle. Le procédé comprend la pyrolyse d'un oligomère de glycolate de méthyle dans un système de réaction de pyrolyse. Le système de réaction de pyrolyse ne comprend pas plus de 1 % en poids d'un polyester, d'un polyol, d'un polyacide ou d'une combinaison correspondante, sur la base du poids total de l'oligomère de glycolate de méthyle dans le système. L'invention concerne également une composition comprenant plus de 90 % en poids de glycolate de méthyle et pas plus de 1 % en poids d'une combinaison du polyester, du polyol et du polyacide, sur la base du poids de la composition.
Latest bibliographic data on file with the International Bureau