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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 6, 2009
Accepted December 3, 2009

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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폴리카보네이트 해중합을 이용한 Bisphenol A계 Bishydroxyethyl Ether 화합물 생성 특성

Synthesis of Bishydroxyethyl Ether of Bisphenol A(BHE-BPA) Through the Depolymerization of Polycarbonate

허미선^{1 2} 김범식^1† 박유인¹ 한명완^2†

Miseon Heo^{1 2} Beomsik Kim^1† Youin Park¹ Myungwan Han^2†

¹한국화학연구원, 대전광역시 유성구 장동 100번지 ²충남대학교 화학공학과, 대전광역시 유성구 궁동 220번지

¹Korea Research Institute of Chemical Technology, 100 Jang-dong, Yuseong-gu, Daejeon 305-600, Korea ²Department of Chemical Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, Korea

bskim@krict.re.kr

Korean Chemical Engineering Research, April 2010, 48(2), 164-171(8), NONE Epub 3 May 2010

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Abstract

최근 폴리카보네이트의 수요가 증가에 따라 폴리카보네이트의 폐기물이 많이 발생하고 있다. 폐 폴리카보네이트를 재활용하여 새로운 소재 원료로 주목을 받고 있는 diol 형태의 bisphenol A계 bishydroxyethyl ether(BHE-BPA)를 얻고자 하였다. 이 물질은 폴리카보네이트계 폴리우레탄 합성에 좋은 소재로 사용될 수 있다. 본 연구에서는 에틸렌글리콜과 수산화나트륨(NaOH)을 각각 용매와 촉매로 사용하였고, 분해반응 생성물 중 하나인 에틸렌카보네이트(Ethylenecarbonate, EC)를 첨가하여 생성물의 전환율을 조사하였다. 알칼리촉매 사용에 따라 단순 글리콜리시스 반응에서 관찰되지 않았던 ether 화합물들이 합성되었으며 온도 220 ℃, 10% 촉매/PC 몰비, EC 20 mmol 조건에서 폴리카보네이트로부터 수율 92% 이상의 BHE-BPA를 얻었고 재결정을 통하여 99% 이상의 순도를 얻는 것이 가능하였다.

Recently, the waste of Polycarbonate(PC) is increase with the increase in demand of a polycarbonate. It is concerned with producing a new material and diol monomer, bishydroxyethyl ether of bisphenol A(BHE-BPA) through depolymerization of the polycarbonate waste at recycling. BHE-BPA can be used as a good raw material for the synthesis of polycarbonate type polyurethane. PC particles were depolymerized with base-catalyst NaOH, solvent EG, and ethylene carbonate(EC) was formed during the PC depolymerziation. EC was added to promote the conversion from bispenol-A to BHE-BPA. The characteristics of depolymeraion of polycarbonate as well as conversion of bispenol-A to BHE-BPA were investigated. BHE-BPA yield of 92% was obtained at temperature 220 ℃, 10% catalyst/PC mole ratio, 20 mmol of EC. BHE-BPA purity of better than 99% was achieved by crystallization of BHE-BPA.

Keywords

PC(Polycarbonate) BHE-BPA(bishydroxyethyl ether of bisphenol A) EC(Ethylenecarbonate)

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