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Method of recycling waste polyurethane foams

SYSNO ASEP	0438317
Document Type	P - Patent
R&D Document Type	Patent or other outcome protected by special legislation
Title	Method of recycling waste polyurethane foams
Author(s)	Kruliš, Zdeněk (UMCH-V)_{RID, ORCID} Horák, Zdeněk (UMCH-V) Beneš, Hynek (UMCH-V)_{RID, ORCID} Hájek, Milan (UCHP-M)_{RID, SAI}
Year of issue	2014
Publication form	Print - P
Possible third party use of the result	A - Pro využití výsledku jiným subjektem je vždy nutné nabytí licence
Royalty requested	A - Poskytovatel licence požaduje licenční poplatek
Patent no. or utility model no. or industrial design no.	EP2183311
Date of the patent acceptance	03.12.2014
Name of the patent owner	Ústav makromolekulární chemie AV ČR, v. v. i. - Ústav chemických procesů AV ČR, v. v. i
Code of the issuer name	EPO_1 - European Patent Office Munich, The Hague, Berlin, Vienna, Brusselshttp://www.epo.org/
Current use	A - Pouze udělený (dosud nevyužívaný) patent nebo patent využívaný jeho vlastníkem
Language	eng - English
Keywords	recycling ; waste ; polyurethane foams
Subject RIV	CD - Macromolecular Chemistry
Subject RIV - cooperation	Institute of Chemical Process Fundamentals - Industrial Chemistry, Chemical Engineering
R&D Projects	2B06097 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA104/08/0416 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z40500505 - UMCH-V (2005-2011)
	AV0Z40720504 - UCHP-M (2005-2011)
Annotation	The present invention relates to a process for recycling waste polyurethane foams, produced by reacting polyester and/or polyether polyols with aromatic polyfunctional isocyanates, to a homogeneous single-phase liquid polyol mixture characterized in that the waste polyurethane is decomposed by the reaction with a low- molecular-weight polyhydric alcohol selected from the group consisting of ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, 2-methylpropane-l,3-diol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, trimethylolpropane (2,2- bis(hydroxymethyl)propan-l-ol), glycerol or their mixtures under the condition that the waste polyurethane and polyhydric alcohol are used in the weight ratio at least 3:1 and at the most 1:3 and the reaction mixture is subjected to the action of electromagnetic radiation of a frequency ranging from 1 MHz to 10 GHz at the temperature ranging from 50 to 300 degC.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2015
Electronic address	http://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=20141203&DB=worldwide.espacenet.com&locale=en_EP&CC=EP&NR=2183311B1&KC=B1&ND=4

Number of the records: 1