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1. WO2001014296 - METHOD FOR RECOVERING POLYOXYALKYLENE POLYOL THROUGH DECOMPOSITION

Publication Number WO/2001/014296
Publication Date 01.03.2001
International Application No. PCT/JP2000/005455
International Filing Date 14.08.2000
Chapter 2 Demand Filed 12.03.2001
IPC
C07C 29/10 2006.1
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
29Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
09by hydrolysis
10of ethers, including cyclic ethers, e.g. oxiranes
C07C 41/26 2006.1
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
18by reactions not forming ether-oxygen bonds
26by introduction of hydroxy or O-metal groups
CPC
C07C 29/10
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
29Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
09by hydrolysis
10of ethers, including cyclic ethers, e.g. oxiranes
C07C 41/26
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
18by reactions not forming ether-oxygen bonds
26by introduction of hydroxy or O-metal groups
Y02P 20/54
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
50Improvements relating to the production of bulk chemicals
54using solvents, e.g. supercritical solvents or ionic liquids
Applicants
  • TAKEDA CHEMICAL INDUSTRIES, LTD. [JP]/[JP] (AllExceptUS)
  • KOBE STEEL LTD. [JP]/[JP] (AllExceptUS)
  • KODAMA, Katsuhisa [JP]/[JP] (UsOnly)
  • MURAYAMA, Kouichi [JP]/[JP] (UsOnly)
  • KUMAKI, Takashi [JP]/[JP] (UsOnly)
  • NAGASE, Yoshiyuki [JP]/[JP] (UsOnly)
  • FUKUZATO, Ryuichi [JP]/[JP] (UsOnly)
  • KASUYA, Fumihiko [JP]/[JP] (UsOnly)
Inventors
  • KODAMA, Katsuhisa
  • MURAYAMA, Kouichi
  • KUMAKI, Takashi
  • NAGASE, Yoshiyuki
  • FUKUZATO, Ryuichi
  • KASUYA, Fumihiko
Agents
  • TANI, Yoshitaka
Priority Data
11/23525123.08.1999JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR RECOVERING POLYOXYALKYLENE POLYOL THROUGH DECOMPOSITION
(FR) PROCEDE DE RECUPERATION DE POLYOXYALKYLENE POLYOL PAR DECOMPOSITION
Abstract
(EN) A polyoxyalkylene polyol is hydrolyzed with highly pressurized liquid water having a temperature of 320 to 500°C or with supercritical water to yield glycols having a molecular weight of 150 or lower. The glycols are recovered. Thus, a method for the chemical recycling of a polyurethane resin has been accomplished in a true sense.
(FR) On hydrolyse un polyoxyalkylène polyol avec de l'eau liquide haute pression, présentant une température de 320 à 500 °C ou avec de l'eau supercritique, pour produire des glycols possédant un poids moléculaire de 150 ou moins. On récupère ensuite lesdits glycols. Ainsi, on a mis en oeuvre un procédé de recyclage chimique de résine polyuréthane au sens propre du terme.
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