FI69311C - Foerfarande foer framstaellning av cellulosa-acetat av en mycket reaktiv cellulosa - Google Patents

Foerfarande foer framstaellning av cellulosa-acetat av en mycket reaktiv cellulosa Download PDF

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Publication number
FI69311C
FI69311C FI830038A FI830038A FI69311C FI 69311 C FI69311 C FI 69311C FI 830038 A FI830038 A FI 830038A FI 830038 A FI830038 A FI 830038A FI 69311 C FI69311 C FI 69311C
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FI
Finland
Prior art keywords
cellulose
pulp
process according
propylene oxide
pulps
Prior art date
Application number
FI830038A
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English (en)
Finnish (fi)
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FI830038L (fi
FI830038A0 (fi
FI69311B (fi
Inventor
Karl David Sears
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Itt
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Publication date
Application filed by Itt filed Critical Itt
Publication of FI830038A0 publication Critical patent/FI830038A0/fi
Publication of FI830038L publication Critical patent/FI830038L/fi
Application granted granted Critical
Publication of FI69311B publication Critical patent/FI69311B/fi
Publication of FI69311C publication Critical patent/FI69311C/fi

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/02—Rendering cellulose suitable for esterification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B13/00—Preparation of cellulose ether-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00—Preparation of cellulose esters of organic acids
    • C08B3/06—Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)

Claims (9)

1. Förfarande för framställning av cellulosa-acetat 5 av en mycket reaktiv cellulosa genoro att mercerisera ett cellulosamaterial och omsätta den merceriserade cellulosan med ett hydroxialkyleringsmedel, vilket utgörs av etylen-oxid eller propylenoxid, kännetecknat därav, att reaktionen bringas tili en substitutionsgrad av cellu-10 losa av 0,05 - 0,3, vilken är otillräcklig att göra cellulosan märkbart vattenlöslig, och att den mycket reaktiva, väsentligen i vatten olösliga cellulosareaktionsprodukten tillvaratas och acetyleras.
2. Förfarande enligt patentkravet 1, kanne- 15 tecknat därav, att cellulosamaterialet merceriseras med en kaustisk lösning med en koncentration av 6 - 40 %.
3. Förfarande enligt patentkravet 2, kännetecknat därav, att den kaustiska lösningen utgörs av en cirka 10 %:ig natriumhydroxidlösning. 20
4. Förfarande enligt patentkravet 2, känne tecknat därav, att hydroxialkyleringsreaktionen utförs i närvaro av en kaustisk lösning med samma koncentration som merceriseringslösningen.
5. Förfarande enligt patentkravet 1, k ä n n e -25 tecknat därav, att cellulosamaterialet utgörs av cellulosamassa.
6. Förfarande enligt patentkravet 5, kännetecknat därav, att merceriserings- och hydroxi-alkyleringsstegen utförs i samband med kallalkaliextrak- 30 tionssteget för rening av cellulosamassan.
7. Förfarande enligt patentkravet 1, kännetecknat därav, att cellulosans substitutionsgrad är 0,08 - 0,27.
8. Förfarande enligt patentkravet 7, k ä n n e -35 tecknat därav, att hydroxialkyleringsmedlet är etylenoxid och att cellulosans substitutionsgrad är 0,12 -0,27.
FI830038A 1982-01-06 1983-01-06 Foerfarande foer framstaellning av cellulosa-acetat av en mycket reaktiv cellulosa FI69311C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33744782 1982-01-06
US06/337,447 US4399275A (en) 1982-01-06 1982-01-06 Preparation of highly reactive cellulose

Publications (4)

Publication Number Publication Date
FI830038A0 FI830038A0 (fi) 1983-01-06
FI830038L FI830038L (fi) 1983-07-07
FI69311B FI69311B (fi) 1985-09-30
FI69311C true FI69311C (fi) 1986-01-10

Family

ID=23320575

Family Applications (1)

Application Number Title Priority Date Filing Date
FI830038A FI69311C (fi) 1982-01-06 1983-01-06 Foerfarande foer framstaellning av cellulosa-acetat av en mycket reaktiv cellulosa

Country Status (3)

Country Link
US (1) US4399275A (sv)
CA (1) CA1184904A (sv)
FI (1) FI69311C (sv)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897880A (en) * 1987-02-17 1990-01-30 Soricon Corporation Data acquisition control method and system for a hand held reader
GB9404510D0 (en) * 1994-03-09 1994-04-20 Courtaulds Fibres Holdings Ltd Fibre treatment
US5858021A (en) * 1996-10-31 1999-01-12 Kimberly-Clark Worldwide, Inc. Treatment process for cellulosic fibers
FR2762603B1 (fr) 1997-04-25 1999-07-16 Rhodia Ag Rhone Poulenc Cellulose reactive et procede de fabrication de cette cellulose
US6686464B1 (en) * 1999-04-26 2004-02-03 Bki Holding Corporation Cellulose ethers and method of preparing the same
JP4195289B2 (ja) 2000-11-01 2008-12-10 ビーケイアイ・ホールディング・コーポレーション セルロースエーテル及びその製造方法
US6620293B2 (en) * 2001-04-11 2003-09-16 Rayonier Inc. Crossed-linked pulp and method of making same
US20030050472A1 (en) * 2001-08-31 2003-03-13 Rayonier Inc. Alkylene oxide modified hardwood cellulose
US7195695B2 (en) * 2003-10-02 2007-03-27 Rayonier Products & Financial Services Company Cross-linked cellulose fibers and method of making same
US20060287517A1 (en) * 2005-06-16 2006-12-21 Linfu Wang Preparation of wood pulps with caustic pretreatment for use in the manufacture of cellulose acetates and other organic esters
US20070167618A1 (en) * 2006-01-13 2007-07-19 Celanese Acetate, Llc Manufacture of cellulose esters: recycle of caustic and/or acid from pre-treatment of pulp
KR101682466B1 (ko) * 2010-02-01 2016-12-05 롯데정밀화학 주식회사 아세틸화 셀룰로오스 에테르 및 이를 포함하는 물품
EA025911B1 (ru) * 2013-12-23 2017-02-28 Сумгаитский Государственный Университет Способ получения активированного порошка целлюлозы
WO2018144309A1 (en) 2017-01-31 2018-08-09 Kimberly-Clark Worldwide, Inc. High bulk tissue comprising cross-linked fibers
WO2021154560A1 (en) 2020-01-30 2021-08-05 Kimberly-Clark Worldwide, Inc. Tissue products comprising crosslinked fibers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA516344A (en) * 1955-09-06 Rayonier Inc. Wood pulp containing polyethylene oxide ethers
US2469764A (en) * 1946-01-16 1949-05-10 Erickson Donald Robert Manufacture of hydroxy alkyl cellulose
US2692877A (en) * 1951-05-11 1954-10-26 Rayonier Inc Acetylation of wood pulp
US2847411A (en) * 1955-02-15 1958-08-12 Rayonier Inc Process for producing hydroxyethoxycellulose
US3148106A (en) * 1964-01-29 1964-09-08 Rayonier Inc Pulp refining

Also Published As

Publication number Publication date
FI830038L (fi) 1983-07-07
FI830038A0 (fi) 1983-01-06
CA1184904A (en) 1985-04-02
US4399275A (en) 1983-08-16
FI69311B (fi) 1985-09-30

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Owner name: ITT INDUSTRIES, INC.