KR960031504A - How to Treat Residues Containing Dihydroxy Compounds - Google Patents

How to Treat Residues Containing Dihydroxy Compounds Download PDF

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Publication number
KR960031504A
KR960031504A KR1019950003315A KR19950003315A KR960031504A KR 960031504 A KR960031504 A KR 960031504A KR 1019950003315 A KR1019950003315 A KR 1019950003315A KR 19950003315 A KR19950003315 A KR 19950003315A KR 960031504 A KR960031504 A KR 960031504A
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South Korea
Prior art keywords
dihydroxy compound
reaction
alkanol
bottom product
dihydroxy
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KR1019950003315A
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Korean (ko)
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KR100322955B1 (en
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브라우네 페터
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랑핑어, 슈타인호프
바스프 악티엔게젤샤프트
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Priority to KR1019950003315A priority Critical patent/KR100322955B1/en
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Abstract

본 발명은, (a) 디카르복실산과 알칸올의 디에스테르를 몰 과량의 디히드록시 화합물과 에스테르 교환반응 시키는 단계 ; (b) 단계 (a)에 따르는 반응에서 얻어지고, 우세하게는 에스테르 교환반응에서 생성되는 알칸올을 함유하는 증기, 과량의 디히드록시 화합물 및 올리고머 및 중합체 반응 생성물을 컬럼으로 옮겨서, 알칸올을 상부를 경유하여 분리시키고 나머지 생성물을 바닥 생성물로서 분리시키는 단계 ; 및 (c) 바닥 생성물을 더 처리하여 디히드록시 화합물을 회수하는 단계로 이루어지는 디카르복실산 또는 이것에 에스테르 또는 에스테르-생성 유도체와 디히드록시 화합물의 반응에 의한 폴리에스테르의 제조에서 얻어지는, 디히드록시 화합물을 함유하는 잔류물의 처리방법에 관한 것이며, 방법의 단계 (b)에서 디히드록시 화합물을 함유하는 액체 잔류물이 첨가되고, 바닥 생성물은 컬럼으로부터 샐제로 액체 형태로 배출된 후, 더 처리되어 디히드록시 화합물을 회수한다.The present invention comprises the steps of (a) transesterifying a diester of dicarboxylic acid and alkanol with a molar excess of dihydroxy compound; (b) vapor containing the alkanol obtained in the reaction according to step (a) and predominantly produced in the transesterification reaction, excess dihydroxy compound and oligomer and polymer reaction products are transferred to a column to give alkanol Separating via top and separating the remaining product as bottom product; And (c) further treating the bottom product to recover the dihydroxy compound, the dicarboxylic acid obtained in the production of polyester by the reaction of an ester or ester-producing derivative with a dihydroxy compound. And a liquid residue containing the dihydroxy compound is added in step (b) of the process, and the bottom product is discharged from the column in liquid form, and then further Treatment to recover the dihydroxy compound.

Description

디히드록시 화합물을 함유하는 잔류물을 처리하는 방법How to Treat Residues Containing Dihydroxy Compounds

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (1)

(a) 디카르복실산과 알칸올의 디에스테를 몰과량의 디히드록시 화합물과 에스테르 교환반응시키는 단계 ; (b) 단계(a)에 따르는 반응에서 얻어지고, 우세하게는 에스테르 교환반응에서 생성되는 알칸올을 함유하는 증기, 과량의 디히드록시 화합물 및 올리고머 및 중합체 반응 생성물을 컬럼으로 옮겨서, 알칸올을 상부를 경유하여 분리시키고 나머지 생성물을 바닥 생성물로서 분리시키는 단계 ; 및 (c) 바닥 생성물을 더 처리하여 디히드록시 화합물을 회수하는 단계로 이루어지며, 단계 (b)에서 디히드록시 화합물을 함유하는 액체 잔류물을 첨가하고, 바닥 생성물을 컬럼으로부터 액체 형태로 배출시킨 후, 더 처리되어 디히드록시 화합물을 회수하는 것을 특징으로 하는, 디카르복실산 또는 이것의 에스테르 또는 에스테르-생성 유도체와 디히드록시 화합물의 반응에 의한 폴리에스테르의 제조에서 얻어지는, 디히드록시 화합물을 함유하는 잔류물의 처리방법.(a) transesterifying a diester of dicarboxylic acid and alkanol with a molar excess of dihydroxy compound; (b) vapor containing the alkanol obtained in the reaction according to step (a), predominantly produced in the transesterification reaction, excess dihydroxy compound and oligomer and polymer reaction product to the column, Separating via top and separating the remaining product as bottom product; And (c) further treating the bottom product to recover the dihydroxy compound, in step (b) adding a liquid residue containing the dihydroxy compound and evacuating the bottom product from the column in liquid form. Dihydroxy, obtained in the production of polyesters by reaction of dicarboxylic acids or esters or ester-producing derivatives thereof with dihydroxy compounds, which are further treated to recover the dihydroxy compounds. A process for the treatment of residues containing a compound. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950003315A 1995-02-18 1995-02-18 How to Treat Residues Containing Dihydroxy Compounds KR100322955B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950003315A KR100322955B1 (en) 1995-02-18 1995-02-18 How to Treat Residues Containing Dihydroxy Compounds

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Application Number Priority Date Filing Date Title
KR1019950003315A KR100322955B1 (en) 1995-02-18 1995-02-18 How to Treat Residues Containing Dihydroxy Compounds

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KR960031504A true KR960031504A (en) 1996-09-17
KR100322955B1 KR100322955B1 (en) 2002-05-13

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