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Method for the Chemical Depolymerization of Waste Polyethylene Terephthalate
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SYSNO ASEP 0382191 Document Type P - Patent R&D Document Type Patent or other outcome protected by special legislation Title Method for the Chemical Depolymerization of Waste Polyethylene Terephthalate Author(s) Hájek, Milan (UCHP-M) RID, SAI
Sobek, Jiří (UCHP-M) RID, ORCID, SAI
Brustman, Jaroslav (UCHP-M)Year of issue 2012 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. CN101688015 Date of the patent acceptance 19.09.2012 Name of the patent owner Ústav chemických procesů AV ČR, v. v. i Code of the issuer name CN002 - Patent Office - State Intellectual Property Office of the Peoples Republic of China (SIPO) Beijing Current use A - Pouze udělený (dosud nevyužívaný) patent nebo patent využívaný jeho vlastníkem Language eng - English Keywords microwave ; depolymerization ; pet Subject RIV CI - Industrial Chemistry, Chemical Engineering Institutional support UCHP-M - RVO:67985858 Annotation A method for the chemical depolymerization of waste polyethylene terephthalate by application of microwave radiation and solvolysis in the presence of a catalyst comprising the first stage where the waste polyethylene terephthalate is mixed up with an microwaves absorbing activator, the mixture is melted by its exposing to a microwave radiation on a frequency from 915 to 2450 MHz and with a poweroutput from 0.1 to 0.5 kW per kg of a charge, at a temperature from 230 to 330 DEG C, under atmospheric pressure and the second stage, where the molten mixture is subjected to solvolysis, including acidic or basic hydrolysis, alcoholysis or glycolysis in the presence of a catalyst under continuing microwave radiation and atmospheric pressure yielding terephthalic acid, salts or esters thereof, and ethylene glycol. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2013 Electronic address http://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=20120919&DB=worldwide.espacenet.com&locale=en_EP&CC=CN&NR=101688015B&KC=B&ND=4.
Number of the records: 1