KR950703005A - PROCESS FOR ACETYLATION OF CELLULOSE - Google Patents

PROCESS FOR ACETYLATION OF CELLULOSE Download PDF

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Publication number
KR950703005A
KR950703005A KR1019950700439A KR19950700439A KR950703005A KR 950703005 A KR950703005 A KR 950703005A KR 1019950700439 A KR1019950700439 A KR 1019950700439A KR 19950700439 A KR19950700439 A KR 19950700439A KR 950703005 A KR950703005 A KR 950703005A
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KR
South Korea
Prior art keywords
range
weight
stream
acid
acetylation
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Application number
KR1019950700439A
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Korean (ko)
Inventor
멜빈 글렌 미첼
테드 캘빈 저엄로드
그리핀 이반 존슨
아서 탈러 쥬니어 스포
Original Assignee
해리 제이. 귀넬
이스트만 케미컬 컴퍼니(Eastman Chemical Company)
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Application filed by 해리 제이. 귀넬, 이스트만 케미컬 컴퍼니(Eastman Chemical Company) filed Critical 해리 제이. 귀넬
Publication of KR950703005A publication Critical patent/KR950703005A/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00Preparation of cellulose esters of organic acids
    • C08B3/06Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate

Abstract

본 발명은 (A)셀룰로즈 물, 아세트산, 촉매 및 아세트산 무수물을 아세틸화 존에 도입시키는 단계, 및 (B)아세틸화존내의 재료들을 이 재료들의 파운드당 0.01-2.0kw 범위의 속도로 10초 미만의 시간동안 교반시키는 단계로 구성되는 셀룰로즈의 아세틸화 방법에 관한다.The present invention relates to a process for (a) introducing cellulose water, acetic acid, a catalyst and acetic anhydride into an acetylation zone, and (B) a time of less than 10 seconds at a rate in the range of 0.01-2.0 kw per pound of these materials. It relates to a method for the acetylation of cellulose consisting of a step of stirring during.

Description

셀룰로즈의 아세틸화 방법(PROCESS FOR ACETYLATION OF CELLULOSE)PROCESS FOR ACETYLATION OF CELLULOSE

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

Claims (4)

(A)스트림의 중량에 기준하여 5-17중량% 범위의 셀룰로즈, 0-2중량% 범위의 물, 10-62중량% 범위의 아세트산, 메탄 설폰산, 메탄 디설폰산, 설포아세트산, 설퍼릴 클로라이드 및 황산으로 이루어지는 그룹에서 선택된 0.1-1.2중량% 범위의 촉매 및 27-41중량% 범위의 아세트산 무수물로 구성되는 스트림을 아세틸화 존으로 도입시키는 단계, 및 (B)아세틸화 존내에서 10초 미만의 시간동안 스트림 파운드당 0.01-2.0kw 범위의 속도로 상기 스트림을 교반시키는 단계로 구성되는 방법.(A) cellulose in the range of 5-17% by weight, water in the range of 0-2% by weight, acetic acid in the range of 10-62% by weight, methane sulfonic acid, methane disulfonic acid, sulfoacetic acid, sulfuryl chloride And introducing a stream consisting of a catalyst in the range 0.1-1.2% by weight selected from the group consisting of sulfuric acid and an acetic anhydride in the range 27-41% by weight into the acetylation zone, and (B) less than 10 seconds in the acetylation zone. Stirring the stream at a rate in the range of 0.01-2.0 kw per pound of stream over time. (A)스트림의 중량에 기준하여 10-14중량% 범위의 셀룰로즈, 0.5-1.5중량% 범위의 물, 42-62중량% 범위의 아세트산, 0.2-0.8중량% 범위의 황산 및 27-41중량% 범위의 아세트산 무수물로 구성되는 스트림을 아세틸화 존으로 도입시키는 단계, 및 (B)아세틸화 존내에서 4초 미만의 시간동안 스트림 파운드당 0.05-0.5kw 범위의 속도로 상기 스트림을 교반시키는 단계로 구성되는 방법.(A) 10-14 wt% cellulose, 0.5-1.5 wt% water, 42-62 wt% acetic acid, 0.2-0.8 wt% sulfuric acid and 27-41 wt% based on the weight of the stream Introducing a stream consisting of acetic anhydride in the range into the acetylation zone, and (B) stirring the stream at a rate in the range of 0.05-0.5 kw per pound of stream for less than 4 seconds in the acetylation zone. Way. (A)첫번째와 두번째 스트림 중량의 합에 기준하여 5-17중량% 범위의 셀룰로즈, 0-2중량% 범위의 물, 10-62중량% 범위의 아세트산, 및 메탄 설폰산, 메탄 디설폰산, 설포아세트산, 설퍼릴 클로라이드 및 황산으로 이루어지는 그룹에서 선택된 0.1-1.2중량% 범위의 촉매로 구성되는 첫번째 스트림을 아세틸화 존으로 도입시키는 단계, (B)첫번째와 두번째 스트림 중량의 합에 기준하여, 0-52중량% 범위의 아세트산과 27-41중량% 범위의 아세트산 무수물로 구성되는 두번째 스트림을 상기 아세틸화 존으로 도입시키는 단계, 및 (C)아세틸화 존내에서 10초 미만의 시간동안 첫번째 및 두번째의 결합스트림 파운드당 0.01-2.0kw 범위의 속도로 첫번째 및 두번째 스트림을 교반시키는 단계로 구성되는 방법.(A) 5-17% by weight of cellulose, 0-2% by weight of water, 10-62% by weight of acetic acid, and methane sulfonic acid, methane disulfonic acid, sulfo, based on the sum of the first and second stream weights; Introducing a first stream consisting of a catalyst in the range 0.1-1.2% by weight selected from the group consisting of acetic acid, sulfuryl chloride and sulfuric acid into the acetylation zone, (B) 0- based on the sum of the weights of the first and second streams Introducing a second stream consisting of acetic acid in the range 52% by weight and acetic anhydride in the range 27-41% by weight into the acetylation zone, and (C) the first and second binding in less than 10 seconds in the acetylation zone. Agitating the first and second streams at a rate in the range of 0.01-2.0 kw per pound of stream. (A)첫번째와 두번째 스트림 중량의 합에 기준하여 10-14중량% 범위의 셀룰로즈, 0. 5-1. 5중량% 범위의 물, 42-62중량% 범위의 아세트산, 및 0.2-0.8중량% 범위의 황산으로 구성되는 첫번째 스트림을 아세틸화 존으로 도입시키는 단계, (B)첫번째와 두번째 스트림 중량의 합에 기준하여, 0-10중량% 범위의 아세트산과 31-37중량% 범위의 아세트산 무수물로 구성되는 두번째 스트림을 상기 아세틸화 존으로 도입시키는 단계, 및 (C)아세틸화 존내에서 10초 미만의 시간동안 첫번째 및 두번째의 결합스트림 파운드당 0.05-0.5kw 범위의 속도로 첫번째 및 두번째 스트림을 교반시키는 단계로 구성되는 방법.(A) Cellulose in the range of 10-14% by weight, based on the sum of the first and second stream weights, 0.5-1. Introducing a first stream consisting of water in the range of 5% by weight, acetic acid in the range 42-62% by weight, and sulfuric acid in the range of 0.2-0.8% by weight into the acetylation zone, (B) adding the first and second stream weights to the sum Based on introducing a second stream consisting of acetic acid in the range of 0-10% by weight and acetic anhydride in the range of 31-37% by weight into the acetylation zone, and (C) for less than 10 seconds in the acetylation zone. Stirring the first and second streams at a rate in the range of 0.05-0.5 kw per pound of the first and second combined streams. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950700439A 1992-08-07 1993-07-29 PROCESS FOR ACETYLATION OF CELLULOSE KR950703005A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US92583492A 1992-08-07 1992-08-07
US925,834 1992-08-07
PCT/US1993/007094 WO1994003497A1 (en) 1992-08-07 1993-07-29 Process for acetylation of cellulose

Publications (1)

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KR950703005A true KR950703005A (en) 1995-08-23

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EP (1) EP0654044A1 (en)
JP (1) JPH08500137A (en)
KR (1) KR950703005A (en)
BR (1) BR9306854A (en)
CA (1) CA2141317A1 (en)
WO (1) WO1994003497A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2582353A1 (en) 2004-10-06 2006-04-20 University Of Rochester Treatment of pulmonary hypertension using an agent that inhibits a tissue factor pathway
DE102008035401B4 (en) * 2008-07-29 2011-04-21 List Holding Ag Process for the continuous catalytic acetylation of polysaccharides
US20130096297A1 (en) * 2011-10-14 2013-04-18 Celanese Acetate Llc Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst
US20130096298A1 (en) * 2011-10-14 2013-04-18 Celanese Acetate Llc Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst
US20130096296A1 (en) * 2011-10-14 2013-04-18 Celanese Acetate Llc Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst
WO2023137154A1 (en) 2022-01-14 2023-07-20 Greenkey Llc Process for treating land-based plant and marine-based biomasses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1469149A (en) * 1965-12-28 1967-02-10 Rhodiaceta Process for the continuous esterification of cellulose
US4016353A (en) * 1975-04-14 1977-04-05 Crown Zellerbach Corporation Process for producing organic acid esters of cellulose
JPS60139701A (en) * 1983-12-28 1985-07-24 Daicel Chem Ind Ltd Production of cellulose acetate

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JPH08500137A (en) 1996-01-09
EP0654044A1 (en) 1995-05-24
BR9306854A (en) 1998-12-08
CA2141317A1 (en) 1994-02-17
WO1994003497A1 (en) 1994-02-17

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