NO810981L - Fremgangsmaate ved forhindring av forhorning av cellulose - Google Patents
Fremgangsmaate ved forhindring av forhorning av celluloseInfo
- Publication number
- NO810981L NO810981L NO810981A NO810981A NO810981L NO 810981 L NO810981 L NO 810981L NO 810981 A NO810981 A NO 810981A NO 810981 A NO810981 A NO 810981A NO 810981 L NO810981 L NO 810981L
- Authority
- NO
- Norway
- Prior art keywords
- pulp
- range
- treatment
- consistency
- cellulose
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 28
- 239000001913 cellulose Substances 0.000 title description 8
- 230000002265 prevention Effects 0.000 title 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims abstract description 13
- 238000005886 esterification reaction Methods 0.000 claims abstract description 12
- 230000032050 esterification Effects 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 24
- 238000011282 treatment Methods 0.000 claims description 23
- WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic acid anhydride Natural products CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 230000009257 reactivity Effects 0.000 abstract description 9
- 235000010980 cellulose Nutrition 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 229960000583 acetic acid Drugs 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 229920002301 cellulose acetate Polymers 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/132,912 US4385172A (en) | 1980-03-24 | 1980-03-24 | Prevention of hornification of dissolving pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO810981L true NO810981L (no) | 1981-09-25 |
Family
ID=22456143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO810981A NO810981L (no) | 1980-03-24 | 1981-03-23 | Fremgangsmaate ved forhindring av forhorning av cellulose |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4385172A (fi) |
| CA (1) | CA1161035A (fi) |
| FI (1) | FI66397C (fi) |
| IT (1) | IT1144322B (fi) |
| NO (1) | NO810981L (fi) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60260517A (ja) * | 1984-06-08 | 1985-12-23 | Daicel Chem Ind Ltd | 食品及び薬剤用組成物 |
| US4718981A (en) * | 1985-08-23 | 1988-01-12 | International Paper Company | Bleached kraft paperboard by densification and heat treatment |
| US4818342A (en) * | 1985-08-23 | 1989-04-04 | International Paper Company | Heat treatment of paper products |
| US4718982A (en) * | 1985-08-23 | 1988-01-12 | International Paper Company | Densification and heat treatment of paperboard produced from SCMP and other sulfite pulps |
| US5487419A (en) * | 1993-07-09 | 1996-01-30 | Microcell, Inc. | Redispersible microdenominated cellulose |
| US5385640A (en) * | 1993-07-09 | 1995-01-31 | Microcell, Inc. | Process for making microdenominated cellulose |
| JP4509239B2 (ja) | 1998-11-19 | 2010-07-21 | ダイセル化学工業株式会社 | セルローストリアセテート及びその製造方法 |
| PT105422A (pt) | 2010-12-09 | 2012-06-11 | Univ Aveiro | Pastas celulósicas modificadas, método de preparação por processamento por alta pressão e respectivas aplicações |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1670156A (en) * | 1925-03-05 | 1928-05-15 | Jr Wallace H Howell | Method for cooking wood to form chemical paper stock |
| NL23100C (fi) * | 1926-04-07 | |||
| US1716422A (en) * | 1927-04-23 | 1929-06-11 | Eastman Kodak Co | Process of making organic esters of cellulose |
| GB332607A (en) * | 1929-04-17 | 1930-07-17 | Celanese Corp | Improvements in or relating to the treatment of cellulosic materials and the production of cellulose esters therefrom |
| US2105498A (en) * | 1936-06-27 | 1938-01-18 | Rainier Pulp & Paper Company | Acetylation of wood pulp |
| US2415949A (en) * | 1944-12-05 | 1947-02-18 | Rayonier Inc | Process for the activation of wood pulp prior to esterification |
| US2591106A (en) * | 1947-07-24 | 1952-04-01 | Lionel M Sutherland | Process of making paper pulps |
| GB714163A (en) * | 1950-05-18 | 1954-08-25 | Celanese Corp | Improvements in or relating to the preparation of organic acid esters of cellulose |
| US2631144A (en) * | 1950-10-23 | 1953-03-10 | Du Pont | Activation of cellulose |
| BE563842A (fi) * | 1956-04-26 | |||
| NO115278B (fi) * | 1962-03-03 | 1968-09-09 | Kamyr Ab | |
| US3320022A (en) * | 1964-04-27 | 1967-05-16 | Fmc Corp | Method for the continuous vapor phase acetylation of cellulose fiber |
| SE389520B (sv) * | 1973-09-03 | 1976-11-08 | Kamyr Ab | Apparat for kontinuerlig utvinning av hydrolysat ur finfordelat fibermaterial |
-
1980
- 1980-03-24 US US06/132,912 patent/US4385172A/en not_active Expired - Lifetime
-
1981
- 1981-03-11 CA CA000372756A patent/CA1161035A/en not_active Expired
- 1981-03-23 FI FI810887A patent/FI66397C/fi not_active IP Right Cessation
- 1981-03-23 NO NO810981A patent/NO810981L/no unknown
- 1981-03-23 IT IT67398/81A patent/IT1144322B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| FI66397C (fi) | 1984-10-10 |
| IT1144322B (it) | 1986-10-29 |
| FI810887L (fi) | 1981-09-25 |
| US4385172A (en) | 1983-05-24 |
| CA1161035A (en) | 1984-01-24 |
| FI66397B (fi) | 1984-06-29 |
| IT8167398A0 (it) | 1981-03-23 |
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