ZA200410230B - Treatment of a mixture containing cellulose with a reducing agent - Google Patents

Treatment of a mixture containing cellulose with a reducing agent Download PDF

Info

Publication number: ZA200410230B
Authority: ZA; South Africa
Prior art keywords: cellulose; pulp; specialty; mixture containing; cellulose pulp
Prior art date: 2002-06-26

Application number

ZA200410230A

Other languages

English (en)

Inventor

Justin T Scarpello

Asbjorn Bratekas

Over Bartholsen

Torgeir Hjerde

Original Assignee

Borregaard Chemcell

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2002-06-26

Filing date

2004-12-20

Publication date

2006-07-26

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=29779253&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA200410230(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2004-12-20 Application filed by Borregaard Chemcell filed Critical Borregaard Chemcell

2006-07-26 Publication of ZA200410230B publication Critical patent/ZA200410230B/en

Links

239000001913 cellulose Substances 0.000 title claims abstract description 250
229920002678 cellulose Polymers 0.000 title claims abstract description 247
239000000203 mixture Substances 0.000 title claims abstract description 90
238000011282 treatment Methods 0.000 title claims abstract description 76
239000003638 chemical reducing agent Substances 0.000 title description 42
238000000034 method Methods 0.000 claims abstract description 104
125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims abstract description 37
239000003795 chemical substances by application Substances 0.000 claims abstract description 34
229920003086 cellulose ether Polymers 0.000 claims abstract description 22
238000004519 manufacturing process Methods 0.000 claims abstract description 18
235000010980 cellulose Nutrition 0.000 claims description 237
230000008569 process Effects 0.000 claims description 59
238000004061 bleaching Methods 0.000 claims description 52
239000000126 substance Substances 0.000 claims description 29
238000004537 pulping Methods 0.000 claims description 21
239000002023 wood Substances 0.000 claims description 15
239000002994 raw material Substances 0.000 claims description 12
239000002002 slurry Substances 0.000 claims description 12
229940106135 cellulose Drugs 0.000 claims description 9
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
239000000654 additive Substances 0.000 claims description 7
239000000123 paper Substances 0.000 claims description 7
229920000742 Cotton Polymers 0.000 claims description 5
238000001035 drying Methods 0.000 claims description 5
229920000297 Rayon Polymers 0.000 claims description 4
230000000996 additive effect Effects 0.000 claims description 4
238000012805 post-processing Methods 0.000 claims description 4
235000013305 food Nutrition 0.000 claims description 3
239000002131 composite material Substances 0.000 claims description 2
239000002537 cosmetic Substances 0.000 claims description 2
239000000976 ink Substances 0.000 claims description 2
235000019813 microcrystalline cellulose Nutrition 0.000 claims description 2
239000008108 microcrystalline cellulose Substances 0.000 claims description 2
229940016286 microcrystalline cellulose Drugs 0.000 claims description 2
238000010137 moulding (plastic) Methods 0.000 claims description 2
239000004745 nonwoven fabric Substances 0.000 claims description 2
239000003973 paint Substances 0.000 claims description 2
239000002964 rayon Substances 0.000 claims description 2
229910010082 LiAlH Inorganic materials 0.000 claims 1
238000009472 formulation Methods 0.000 claims 1
239000000463 material Substances 0.000 abstract description 6
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 54
239000001768 carboxy methyl cellulose Substances 0.000 description 40
235000010948 carboxy methyl cellulose Nutrition 0.000 description 36
239000008112 carboxymethyl-cellulose Substances 0.000 description 36
229940105329 carboxymethylcellulose Drugs 0.000 description 36
229920002134 Carboxymethyl cellulose Polymers 0.000 description 34
239000000047 product Substances 0.000 description 25
239000000243 solution Substances 0.000 description 21
239000000843 powder Substances 0.000 description 19
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
239000013055 pulp slurry Substances 0.000 description 17
KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 16
239000002245 particle Substances 0.000 description 16
239000012279 sodium borohydride Substances 0.000 description 16
229910000033 sodium borohydride Inorganic materials 0.000 description 16
QMGYPNKICQJHLN-UHFFFAOYSA-M Carboxymethylcellulose cellulose carboxymethyl ether Chemical compound [Na+].CC([O-])=O.OCC(O)C(O)C(O)C(O)C=O QMGYPNKICQJHLN-UHFFFAOYSA-M 0.000 description 14
238000006243 chemical reaction Methods 0.000 description 13
239000008367 deionised water Substances 0.000 description 12
229910021641 deionized water Inorganic materials 0.000 description 12
239000007844 bleaching agent Substances 0.000 description 11
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 11
239000007800 oxidant agent Substances 0.000 description 11
238000012545 processing Methods 0.000 description 11
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
238000006266 etherification reaction Methods 0.000 description 9
230000006870 function Effects 0.000 description 9
239000000835 fiber Substances 0.000 description 8
229960004592 isopropanol Drugs 0.000 description 8
229920005610 lignin Polymers 0.000 description 8
238000005259 measurement Methods 0.000 description 8
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
239000000460 chlorine Substances 0.000 description 7
238000000605 extraction Methods 0.000 description 7
-1 lignin Chemical class 0.000 description 7
238000006722 reduction reaction Methods 0.000 description 7
239000000725 suspension Substances 0.000 description 7
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
XQIMLPCOVYNASM-UHFFFAOYSA-N borole Chemical compound B1C=CC=C1 XQIMLPCOVYNASM-UHFFFAOYSA-N 0.000 description 6
239000007795 chemical reaction product Substances 0.000 description 6
229910052801 chlorine Inorganic materials 0.000 description 6
150000001875 compounds Chemical class 0.000 description 6
239000011521 glass Substances 0.000 description 6
238000004076 pulp bleaching Methods 0.000 description 6
239000004155 Chlorine dioxide Substances 0.000 description 5
235000019398 chlorine dioxide Nutrition 0.000 description 5
230000000694 effects Effects 0.000 description 5
229920002488 Hemicellulose Polymers 0.000 description 4
229920001131 Pulp (paper) Polymers 0.000 description 4
DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 4
239000007864 aqueous solution Substances 0.000 description 4
238000009826 distribution Methods 0.000 description 4
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
238000002156 mixing Methods 0.000 description 4
KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 4
238000006116 polymerization reaction Methods 0.000 description 4
235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 4
229920001027 sodium carboxymethylcellulose Polymers 0.000 description 4
239000007787 solid Substances 0.000 description 4
238000003756 stirring Methods 0.000 description 4
241000196324 Embryophyta Species 0.000 description 3
102000004190 Enzymes Human genes 0.000 description 3
108090000790 Enzymes Proteins 0.000 description 3
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
241000218657 Picea Species 0.000 description 3
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
239000013043 chemical agent Substances 0.000 description 3
FOCAUTSVDIKZOP-UHFFFAOYSA-M chloroacetate Chemical compound [O-]C(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-M 0.000 description 3
238000010411 cooking Methods 0.000 description 3
238000001212 derivatisation Methods 0.000 description 3
239000011121 hardwood Substances 0.000 description 3
239000001257 hydrogen Substances 0.000 description 3
229910052739 hydrogen Inorganic materials 0.000 description 3
239000001301 oxygen Substances 0.000 description 3
229910052760 oxygen Inorganic materials 0.000 description 3
150000002978 peroxides Chemical class 0.000 description 3
150000003839 salts Chemical class 0.000 description 3
239000011122 softwood Substances 0.000 description 3
238000006467 substitution reaction Methods 0.000 description 3
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
235000008124 Picea excelsa Nutrition 0.000 description 2
229910000831 Steel Inorganic materials 0.000 description 2
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
230000009471 action Effects 0.000 description 2
239000011111 cardboard Substances 0.000 description 2
230000000052 comparative effect Effects 0.000 description 2
239000008139 complexing agent Substances 0.000 description 2
238000001816 cooling Methods 0.000 description 2
150000002170 ethers Chemical class 0.000 description 2
238000001914 filtration Methods 0.000 description 2
238000000227 grinding Methods 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
239000011261 inert gas Substances 0.000 description 2
238000009896 oxidative bleaching Methods 0.000 description 2
239000004033 plastic Substances 0.000 description 2
238000003825 pressing Methods 0.000 description 2
230000035484 reaction time Effects 0.000 description 2
102000005962 receptors Human genes 0.000 description 2
108020003175 receptors Proteins 0.000 description 2
230000001105 regulatory effect Effects 0.000 description 2
SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
FDRCDNZGSXJAFP-UHFFFAOYSA-M sodium chloroacetate Chemical compound [Na+].[O-]C(=O)CCl FDRCDNZGSXJAFP-UHFFFAOYSA-M 0.000 description 2
229910001220 stainless steel Inorganic materials 0.000 description 2
239000010935 stainless steel Substances 0.000 description 2
239000010959 steel Substances 0.000 description 2
239000004753 textile Substances 0.000 description 2
238000005406 washing Methods 0.000 description 2
VVYAIXIPOVUMQD-UHFFFAOYSA-N 5-(1,3-dioxoisoindol-2-yl)pentanoic acid Chemical compound C1=CC=C2C(=O)N(CCCCC(=O)O)C(=O)C2=C1 VVYAIXIPOVUMQD-UHFFFAOYSA-N 0.000 description 1
241000208140 Acer Species 0.000 description 1
101710134784 Agnoprotein Proteins 0.000 description 1
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
239000002028 Biomass Substances 0.000 description 1
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
235000018783 Dacrycarpus dacrydioides Nutrition 0.000 description 1
235000014466 Douglas bleu Nutrition 0.000 description 1
102000017914 EDNRA Human genes 0.000 description 1
101150062404 EDNRA gene Proteins 0.000 description 1
239000001856 Ethyl cellulose Substances 0.000 description 1
ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
244000166124 Eucalyptus globulus Species 0.000 description 1
240000000731 Fagus sylvatica Species 0.000 description 1
235000010099 Fagus sylvatica Nutrition 0.000 description 1
WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
239000012448 Lithium borohydride Substances 0.000 description 1
208000002430 Multiple chemical sensitivity Diseases 0.000 description 1
101000867030 Myxine glutinosa Homeobox protein engrailed-like B Proteins 0.000 description 1
241000218595 Picea sitchensis Species 0.000 description 1
235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
235000011613 Pinus brutia Nutrition 0.000 description 1
241000018646 Pinus brutia Species 0.000 description 1
235000009324 Pinus caribaea Nutrition 0.000 description 1
241001223353 Pinus caribaea Species 0.000 description 1
235000005018 Pinus echinata Nutrition 0.000 description 1
241001236219 Pinus echinata Species 0.000 description 1
240000007263 Pinus koraiensis Species 0.000 description 1
235000017339 Pinus palustris Nutrition 0.000 description 1
235000008578 Pinus strobus Nutrition 0.000 description 1
241000219000 Populus Species 0.000 description 1
241000183024 Populus tremula Species 0.000 description 1
ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
240000001416 Pseudotsuga menziesii Species 0.000 description 1
235000005386 Pseudotsuga menziesii var menziesii Nutrition 0.000 description 1
241000219492 Quercus Species 0.000 description 1
229910021607 Silver chloride Inorganic materials 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
240000003021 Tsuga heterophylla Species 0.000 description 1
235000008554 Tsuga heterophylla Nutrition 0.000 description 1
239000011358 absorbing material Substances 0.000 description 1
239000002253 acid Substances 0.000 description 1
239000003513 alkali Substances 0.000 description 1
150000001447 alkali salts Chemical class 0.000 description 1
239000002585 base Substances 0.000 description 1
238000010923 batch production Methods 0.000 description 1
230000033228 biological regulation Effects 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
FLLNLJJKHKZKMB-UHFFFAOYSA-N boron;tetramethylazanium Chemical compound [B].C[N+](C)(C)C FLLNLJJKHKZKMB-UHFFFAOYSA-N 0.000 description 1
238000005282 brightening Methods 0.000 description 1
AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
239000000920 calcium hydroxide Substances 0.000 description 1
229910001861 calcium hydroxide Inorganic materials 0.000 description 1
150000001720 carbohydrates Chemical group 0.000 description 1
239000003054 catalyst Substances 0.000 description 1
210000002421 cell wall Anatomy 0.000 description 1
229920002301 cellulose acetate Polymers 0.000 description 1
239000000919 ceramic Substances 0.000 description 1
RLGQACBPNDBWTB-UHFFFAOYSA-N cetyltrimethylammonium ion Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)C RLGQACBPNDBWTB-UHFFFAOYSA-N 0.000 description 1
239000003251 chemically resistant material Substances 0.000 description 1
JFBJUMZWZDHTIF-UHFFFAOYSA-N chlorine chlorite Inorganic materials ClOCl=O JFBJUMZWZDHTIF-UHFFFAOYSA-N 0.000 description 1
229910001919 chlorite Inorganic materials 0.000 description 1
229910052619 chlorite group Inorganic materials 0.000 description 1
QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
229940000425 combination drug Drugs 0.000 description 1
238000010924 continuous production Methods 0.000 description 1
230000001276 controlling effect Effects 0.000 description 1
239000000498 cooling water Substances 0.000 description 1
UFMOZPONIZKFGT-UHFFFAOYSA-N copper(1+);triphenylphosphane Chemical compound [Cu+].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 UFMOZPONIZKFGT-UHFFFAOYSA-N 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000037213 diet Effects 0.000 description 1
235000005911 diet Nutrition 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
229910001873 dinitrogen Inorganic materials 0.000 description 1
229910001882 dioxygen Inorganic materials 0.000 description 1
239000006185 dispersion Substances 0.000 description 1
239000000975 dye Substances 0.000 description 1
239000000839 emulsion Substances 0.000 description 1
230000007613 environmental effect Effects 0.000 description 1
230000032050 esterification Effects 0.000 description 1
238000005886 esterification reaction Methods 0.000 description 1
229920001249 ethyl cellulose Polymers 0.000 description 1
235000019325 ethyl cellulose Nutrition 0.000 description 1
238000004880 explosion Methods 0.000 description 1
239000004744 fabric Substances 0.000 description 1
239000000706 filtrate Substances 0.000 description 1
239000012467 final product Substances 0.000 description 1
239000008103 glucose Substances 0.000 description 1
230000036541 health Effects 0.000 description 1
125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
229940071826 hydroxyethyl cellulose Drugs 0.000 description 1
239000001863 hydroxypropyl cellulose Substances 0.000 description 1
235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
238000011065 in-situ storage Methods 0.000 description 1
239000007788 liquid Substances 0.000 description 1
239000012280 lithium aluminium hydride Substances 0.000 description 1
QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical compound [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 description 1
239000002370 magnesium bicarbonate Substances 0.000 description 1
229910000022 magnesium bicarbonate Inorganic materials 0.000 description 1
235000014824 magnesium bicarbonate Nutrition 0.000 description 1
230000014759 maintenance of location Effects 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
229960003903 oxygen Drugs 0.000 description 1
238000010979 pH adjustment Methods 0.000 description 1
238000004806 packaging method and process Methods 0.000 description 1
239000011087 paperboard Substances 0.000 description 1
239000006072 paste Substances 0.000 description 1
ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
239000011591 potassium Substances 0.000 description 1
229910052700 potassium Inorganic materials 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
238000010926 purge Methods 0.000 description 1
230000036647 reaction Effects 0.000 description 1
239000012066 reaction slurry Substances 0.000 description 1
230000009467 reduction Effects 0.000 description 1
238000009895 reductive bleaching Methods 0.000 description 1
230000002829 reductive effect Effects 0.000 description 1
238000007670 refining Methods 0.000 description 1
229920005989 resin Polymers 0.000 description 1
239000011347 resin Substances 0.000 description 1
HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
229910001961 silver nitrate Inorganic materials 0.000 description 1
239000011734 sodium Substances 0.000 description 1
229910052708 sodium Inorganic materials 0.000 description 1
BEOOHQFXGBMRKU-UHFFFAOYSA-N sodium cyanoborohydride Chemical compound [Na+].[B-]C#N BEOOHQFXGBMRKU-UHFFFAOYSA-N 0.000 description 1
JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
239000012321 sodium triacetoxyborohydride Substances 0.000 description 1
241000894007 species Species 0.000 description 1
239000003381 stabilizer Substances 0.000 description 1
239000012086 standard solution Substances 0.000 description 1
239000004291 sulphur dioxide Substances 0.000 description 1
235000010269 sulphur dioxide Nutrition 0.000 description 1
DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
230000000930 thermomechanical effect Effects 0.000 description 1
239000002562 thickening agent Substances 0.000 description 1
238000001291 vacuum drying Methods 0.000 description 1
238000004383 yellowing Methods 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
- 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
- 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
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/06—Rendering cellulose suitable for etherification
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Polymers & Plastics (AREA)
Materials Engineering (AREA)
Health & Medical Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Medicinal Chemistry (AREA)
Biochemistry (AREA)
Organic Chemistry (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Chemical Or Physical Treatment Of Fibers (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

ZA200410230A 2002-06-26 2004-12-20 Treatment of a mixture containing cellulose with a reducing agent ZA200410230B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US10/184,009 US20040000012A1 (en)	2002-06-26	2002-06-26	Treatment of a mixture containing cellulose

Publications (1)

Publication Number	Publication Date
ZA200410230B true ZA200410230B (en)	2006-07-26

Family

ID=29779253

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA200410230A ZA200410230B (en)	2002-06-26	2004-12-20	Treatment of a mixture containing cellulose with a reducing agent

Country Status (13)

Country	Link
US (4)	US20040000012A1 (de)
EP (1)	EP1518018B1 (de)
JP (1)	JP2005530937A (de)
CN (1)	CN1668806A (de)
AT (1)	ATE458084T1 (de)
AU (1)	AU2003242752A1 (de)
BR (1)	BR0312225A (de)
CA (1)	CA2489939C (de)
DE (1)	DE60331312D1 (de)
EA (1)	EA200500086A1 (de)
NO (1)	NO20050434L (de)
WO (1)	WO2004003290A1 (de)
ZA (1)	ZA200410230B (de)

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CN106192509A (zh) *	2016-07-20	2016-12-07	昆明理工大学	硼氢化钠和过氧化氢联合促进硫酸盐法制浆的工艺
US10266793B2 (en)	2016-09-30	2019-04-23	Novaflux, Inc.	Compositions for cleaning and decontamination
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WO2018093697A1 (en)	2016-11-16	2018-05-24	Gp Cellulose Gmbh	Modified cellulose from chemical fiber and methods of making and using the same
FI3551790T3 (sv)	2016-12-06	2023-07-05	Re Newcell Ab	Cellulosafibrer
CN107100028A (zh) *	2017-05-05	2017-08-29	东至县鸿棉工贸有限责任公司	一种精制棉短绒的生产方法
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2002
- 2002-06-26 US US10/184,009 patent/US20040000012A1/en not_active Abandoned
2003
- 2003-06-24 EP EP03761497A patent/EP1518018B1/de not_active Revoked
- 2003-06-24 AU AU2003242752A patent/AU2003242752A1/en not_active Abandoned
- 2003-06-24 DE DE60331312T patent/DE60331312D1/de not_active Expired - Lifetime
- 2003-06-24 AT AT03761497T patent/ATE458084T1/de not_active IP Right Cessation
- 2003-06-24 CA CA2489939A patent/CA2489939C/en not_active Expired - Fee Related
- 2003-06-24 BR BR0312225-5A patent/BR0312225A/pt not_active IP Right Cessation
- 2003-06-24 WO PCT/EP2003/006652 patent/WO2004003290A1/en not_active Ceased
- 2003-06-24 EA EA200500086A patent/EA200500086A1/ru unknown
- 2003-06-24 CN CN03817102.3A patent/CN1668806A/zh active Pending
- 2003-06-24 JP JP2004516661A patent/JP2005530937A/ja not_active Withdrawn
2004
- 2004-12-20 ZA ZA200410230A patent/ZA200410230B/en unknown
2005
- 2005-01-26 NO NO20050434A patent/NO20050434L/no not_active Application Discontinuation
- 2005-10-26 US US11/259,991 patent/US20070151680A1/en not_active Abandoned
- 2005-10-26 US US11/259,982 patent/US20060249265A1/en not_active Abandoned
- 2005-10-26 US US11/259,972 patent/US20070199668A1/en not_active Abandoned

Also Published As

Publication number	Publication date
CA2489939C (en)	2011-07-26
JP2005530937A (ja)	2005-10-13
US20070199668A1 (en)	2007-08-30
CA2489939A1 (en)	2004-01-08
AU2003242752A1 (en)	2004-01-19
EA200500086A1 (ru)	2005-06-30
EP1518018B1 (de)	2010-02-17
CN1668806A (zh)	2005-09-14
US20040000012A1 (en)	2004-01-01
BR0312225A (pt)	2005-04-12
ATE458084T1 (de)	2010-03-15
WO2004003290A1 (en)	2004-01-08
NO20050434L (no)	2005-01-26
US20070151680A1 (en)	2007-07-05
DE60331312D1 (de)	2010-04-01
EP1518018A1 (de)	2005-03-30
US20060249265A1 (en)	2006-11-09

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