CA2245966A1 - Methode de blanchiment de pate renfermant de la lignine - Google Patents

Methode de blanchiment de pate renfermant de la lignine Download PDF

Info

Publication number: CA2245966A1
Authority: CA; Canada
Prior art keywords: c4alkyl; fluorescent whitening; process according; whitening agent; formula
Prior art date: 1997-08-28
Legal status (The legal status 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 status listed.): Abandoned

Application number

CA002245966A

Other languages

English (en)

Inventor

Randall Bruce Nelson

Olli Juhani Jokinen

Peter Rohringer

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

BASF Schweiz AG

Original Assignee

Ciba Spezialitaetenchemie Holding AG

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.)

1997-08-28

Filing date

1998-08-26

Publication date

1999-02-28

1998-08-26 Application filed by Ciba Spezialitaetenchemie Holding AG filed Critical Ciba Spezialitaetenchemie Holding AG

1999-02-28 Publication of CA2245966A1 publication Critical patent/CA2245966A1/fr

Status Abandoned legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 72
229920005610 lignin Polymers 0.000 title claims abstract description 44
238000004519 manufacturing process Methods 0.000 title claims abstract description 15
230000002087 whitening effect Effects 0.000 title claims description 6
239000006081 fluorescent whitening agent Substances 0.000 claims abstract description 88
239000002738 chelating agent Substances 0.000 claims abstract description 24
239000002002 slurry Substances 0.000 claims abstract description 15
239000000203 mixture Substances 0.000 claims description 53
229910052739 hydrogen Inorganic materials 0.000 claims description 44
239000011734 sodium Substances 0.000 claims description 42
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 40
229910052708 sodium Inorganic materials 0.000 claims description 39
150000001875 compounds Chemical class 0.000 claims description 32
229910052744 lithium Inorganic materials 0.000 claims description 31
229910052700 potassium Inorganic materials 0.000 claims description 31
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 30
229910001385 heavy metal Chemical class 0.000 claims description 20
-1 phenylamino, morpholino Chemical group 0.000 claims description 20
229910052791 calcium Inorganic materials 0.000 claims description 19
229910052749 magnesium Inorganic materials 0.000 claims description 19
238000004061 bleaching Methods 0.000 claims description 15
229910052742 iron Inorganic materials 0.000 claims description 15
125000002853 C1-C4 hydroxyalkyl group Chemical group 0.000 claims description 13
150000001450 anions Chemical class 0.000 claims description 10
150000007522 mineralic acids Chemical class 0.000 claims description 10
150000007524 organic acids Chemical class 0.000 claims description 10
125000000542 sulfonic acid group Chemical group 0.000 claims description 9
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group 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 claims description 8
150000001408 amides Chemical class 0.000 claims description 7
239000000654 additive Substances 0.000 claims description 6
125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 6
238000001035 drying Methods 0.000 claims description 6
125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 6
125000004573 morpholin-4-yl group Chemical group N1(CCOCC1)* 0.000 claims description 6
150000003839 salts Chemical class 0.000 claims description 6
QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 5
239000007787 solid Substances 0.000 claims description 5
IJAAWBHHXIWAHM-UHFFFAOYSA-N 1,4-bis(2-phenylethenyl)benzene Chemical class C=1C=CC=CC=1C=CC(C=C1)=CC=C1C=CC1=CC=CC=C1 IJAAWBHHXIWAHM-UHFFFAOYSA-N 0.000 claims description 4
UQZLXZWXCZGLSW-UHFFFAOYSA-N 2-[2-[2-sulfo-4-(triazin-4-ylamino)phenyl]ethenyl]-5-(triazin-4-ylamino)benzenesulfonic acid Chemical class C=1C=C(C=CC=2C(=CC(NC=3N=NN=CC=3)=CC=2)S(O)(=O)=O)C(S(=O)(=O)O)=CC=1NC1=CC=NN=N1 UQZLXZWXCZGLSW-UHFFFAOYSA-N 0.000 claims description 4
IOIVJDCXFSKYKU-UHFFFAOYSA-N 2-[2-[2-sulfo-4-(triazol-2-yl)phenyl]ethenyl]-5-(triazol-2-yl)benzenesulfonic acid Chemical class OS(=O)(=O)C1=CC(N2N=CC=N2)=CC=C1C=CC(C(=C1)S(O)(=O)=O)=CC=C1N1N=CC=N1 IOIVJDCXFSKYKU-UHFFFAOYSA-N 0.000 claims description 4
WTYIOUUBRHRFOP-UHFFFAOYSA-N 2-[4-[2-(4-phenylphenyl)ethenyl]phenyl]-1,3-benzoxazole Chemical class C=1C=C(C=2OC3=CC=CC=C3N=2)C=CC=1C=CC(C=C1)=CC=C1C1=CC=CC=C1 WTYIOUUBRHRFOP-UHFFFAOYSA-N 0.000 claims description 4
MPIFMUARWKUNQZ-UHFFFAOYSA-N 4-[2-(2-phenylethenyl)phenyl]-2h-benzo[e]benzotriazole Chemical class C=1C=CC=C(C=2C=3N=NNC=3C3=CC=CC=C3C=2)C=1C=CC1=CC=CC=C1 MPIFMUARWKUNQZ-UHFFFAOYSA-N 0.000 claims description 4
239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
230000000996 additive effect Effects 0.000 claims description 4
ZYGHJZDHTFUPRJ-UHFFFAOYSA-N benzo-alpha-pyrone Natural products C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 claims description 4
XJHABGPPCLHLLV-UHFFFAOYSA-N benzo[de]isoquinoline-1,3-dione Chemical class C1=CC(C(=O)NC2=O)=C3C2=CC=CC3=C1 XJHABGPPCLHLLV-UHFFFAOYSA-N 0.000 claims description 4
235000001671 coumarin Nutrition 0.000 claims description 4
229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
125000000229 (C1-C4)alkoxy group Chemical group 0.000 claims description 3
NJXKLEIKNDPXAE-UHFFFAOYSA-N 1h-benzimidazole;1-benzofuran Chemical class C1=CC=C2OC=CC2=C1.C1=CC=C2NC=NC2=C1 NJXKLEIKNDPXAE-UHFFFAOYSA-N 0.000 claims description 3
URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 claims description 3
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
102000004190 Enzymes Human genes 0.000 claims description 3
108090000790 Enzymes Proteins 0.000 claims description 3
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 3
239000004305 biphenyl Substances 0.000 claims description 3
229960003330 pentetic acid Drugs 0.000 claims description 3
150000003219 pyrazolines Chemical class 0.000 claims description 3
125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
229910006074 SO2NH2 Inorganic materials 0.000 claims description 2
229920002472 Starch Polymers 0.000 claims description 2
125000004429 atom Chemical group 0.000 claims description 2
235000010290 biphenyl Nutrition 0.000 claims description 2
125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
125000002091 cationic group Chemical group 0.000 claims description 2
230000007423 decrease Effects 0.000 claims description 2
239000001257 hydrogen Substances 0.000 claims description 2
125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 2
FTWUXYZHDFCGSV-UHFFFAOYSA-N n,n'-diphenyloxamide Chemical group C=1C=CC=CC=1NC(=O)C(=O)NC1=CC=CC=C1 FTWUXYZHDFCGSV-UHFFFAOYSA-N 0.000 claims description 2
MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 2
ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 2
239000008107 starch Substances 0.000 claims description 2
235000019698 starch Nutrition 0.000 claims description 2
125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 2
125000000565 sulfonamide group Chemical group 0.000 claims description 2
125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 claims 6
125000000332 coumarinyl group Chemical class O1C(=O)C(=CC2=CC=CC=C12)* 0.000 claims 2
ZMLPKJYZRQZLDA-PHEQNACWSA-N 1-[(e)-2-phenylethenyl]-4-[4-[(e)-2-phenylethenyl]phenyl]benzene Chemical group C=1C=CC=CC=1/C=C/C(C=C1)=CC=C1C(C=C1)=CC=C1\C=C\C1=CC=CC=C1 ZMLPKJYZRQZLDA-PHEQNACWSA-N 0.000 claims 1
MALIONKMKPITBV-UHFFFAOYSA-N 2-(3-chloro-4-hydroxyphenyl)-n-[2-(4-sulfamoylphenyl)ethyl]acetamide Chemical compound C1=CC(S(=O)(=O)N)=CC=C1CCNC(=O)CC1=CC=C(O)C(Cl)=C1 MALIONKMKPITBV-UHFFFAOYSA-N 0.000 claims 1
GJFNNZBYCMUAHY-ZHACJKMWSA-N 2-[(e)-2-phenylethenyl]-1,3-benzoxazole Chemical compound N=1C2=CC=CC=C2OC=1/C=C/C1=CC=CC=C1 GJFNNZBYCMUAHY-ZHACJKMWSA-N 0.000 claims 1
229960000956 coumarin Drugs 0.000 claims 1
125000002768 hydroxyalkyl group Chemical group 0.000 claims 1
125000002755 pyrazolinyl group Chemical group 0.000 claims 1
239000000123 paper Substances 0.000 description 26
238000004537 pulping Methods 0.000 description 21
239000000126 substance Substances 0.000 description 21
229920001131 Pulp (paper) Polymers 0.000 description 16
239000002023 wood Substances 0.000 description 16
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 12
229910052799 carbon Inorganic materials 0.000 description 10
150000002500 ions Chemical class 0.000 description 10
239000011777 magnesium Substances 0.000 description 10
239000000835 fiber Substances 0.000 description 9
238000011282 treatment Methods 0.000 description 9
239000013055 pulp slurry Substances 0.000 description 8
125000004178 (C1-C4) alkyl group Chemical group 0.000 description 7
230000003287 optical effect Effects 0.000 description 6
150000002978 peroxides Chemical class 0.000 description 6
YGUMVDWOQQJBGA-VAWYXSNFSA-N 5-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-[(e)-2-[4-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound C=1C=C(\C=C\C=2C(=CC(NC=3N=C(N=C(NC=4C=CC=CC=4)N=3)N3CCOCC3)=CC=2)S(O)(=O)=O)C(S(=O)(=O)O)=CC=1NC(N=C(N=1)N2CCOCC2)=NC=1NC1=CC=CC=C1 YGUMVDWOQQJBGA-VAWYXSNFSA-N 0.000 description 5
ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 4
239000002655 kraft paper Substances 0.000 description 4
229910052751 metal Inorganic materials 0.000 description 4
239000002184 metal Substances 0.000 description 4
230000008901 benefit Effects 0.000 description 3
239000007844 bleaching agent Substances 0.000 description 3
230000006872 improvement Effects 0.000 description 3
239000007788 liquid Substances 0.000 description 3
239000002994 raw material Substances 0.000 description 3
230000002829 reductive effect Effects 0.000 description 3
NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 2
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 description 2
XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
238000004458 analytical method Methods 0.000 description 2
150000004775 coumarins Chemical class 0.000 description 2
125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
230000000694 effects Effects 0.000 description 2
239000000395 magnesium oxide Substances 0.000 description 2
CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
239000000463 material Substances 0.000 description 2
YACKEPLHDIMKIO-UHFFFAOYSA-N methylphosphonic acid Chemical compound CP(O)(O)=O YACKEPLHDIMKIO-UHFFFAOYSA-N 0.000 description 2
238000002156 mixing Methods 0.000 description 2
230000000704 physical effect Effects 0.000 description 2
238000009895 reductive bleaching Methods 0.000 description 2
241000894007 species Species 0.000 description 2
238000001228 spectrum Methods 0.000 description 2
230000000930 thermomechanical effect Effects 0.000 description 2
NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
GJFNNZBYCMUAHY-UHFFFAOYSA-N 2-(2-phenylethenyl)-1,3-benzoxazole Chemical class N=1C2=CC=CC=C2OC=1C=CC1=CC=CC=C1 GJFNNZBYCMUAHY-UHFFFAOYSA-N 0.000 description 1
CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical compound NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
102000005575 Cellulases Human genes 0.000 description 1
108010084185 Cellulases Proteins 0.000 description 1
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical class [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 description 1
229920002488 Hemicellulose Polymers 0.000 description 1
AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 1
229910019142 PO4 Inorganic materials 0.000 description 1
244000154870 Viola adunca Species 0.000 description 1
235000005811 Viola adunca Nutrition 0.000 description 1
235000013487 Viola odorata Nutrition 0.000 description 1
235000002254 Viola papilionacea Nutrition 0.000 description 1
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
238000010521 absorption reaction Methods 0.000 description 1
239000002253 acid Substances 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
230000002411 adverse Effects 0.000 description 1
238000001479 atomic absorption spectroscopy Methods 0.000 description 1
238000010923 batch production Methods 0.000 description 1
230000003197 catalytic effect Effects 0.000 description 1
239000003518 caustics Substances 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
239000001913 cellulose Substances 0.000 description 1
239000013522 chelant Substances 0.000 description 1
238000004182 chemical digestion Methods 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
150000001860 citric acid derivatives Chemical class 0.000 description 1
238000004140 cleaning Methods 0.000 description 1
239000011248 coating agent Substances 0.000 description 1
238000000576 coating method Methods 0.000 description 1
229910052802 copper Inorganic materials 0.000 description 1
239000010949 copper Substances 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 1
230000005281 excited state Effects 0.000 description 1
230000003631 expected effect Effects 0.000 description 1
238000000605 extraction Methods 0.000 description 1
239000012530 fluid Substances 0.000 description 1
238000009616 inductively coupled plasma Methods 0.000 description 1
238000002955 isolation Methods 0.000 description 1
150000004715 keto acids Chemical class 0.000 description 1
229910052748 manganese Inorganic materials 0.000 description 1
239000011572 manganese Substances 0.000 description 1
239000011159 matrix material Substances 0.000 description 1
238000010297 mechanical methods and process Methods 0.000 description 1
230000005226 mechanical processes and functions Effects 0.000 description 1
229910021645 metal ion Inorganic materials 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
SKUZAGMYWZWQLN-UHFFFAOYSA-N methanimidamide;sulfurous acid Chemical compound NC=N.OS(O)=O SKUZAGMYWZWQLN-UHFFFAOYSA-N 0.000 description 1
238000009896 oxidative bleaching Methods 0.000 description 1
125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
235000021317 phosphate Nutrition 0.000 description 1
150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
238000004064 recycling Methods 0.000 description 1
238000007086 side reaction Methods 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
150000001629 stilbenes Chemical class 0.000 description 1
235000021286 stilbenes Nutrition 0.000 description 1
239000000758 substrate Substances 0.000 description 1
238000010998 test method Methods 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
238000004383 yellowing Methods 0.000 description 1
239000011701 zinc Substances 0.000 description 1
229910052725 zinc Inorganic materials 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
- 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
- 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
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Paper (AREA)
Detergent Compositions (AREA)

CA002245966A 1997-08-28 1998-08-26 Methode de blanchiment de pate renfermant de la lignine Abandoned CA2245966A1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US91954997A	1997-08-28	1997-08-28
US08/919,549		1997-08-28

Publications (1)

Publication Number	Publication Date
CA2245966A1 true CA2245966A1 (fr)	1999-02-28

Family

ID=25442297

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002245966A Abandoned CA2245966A1 (fr)	1997-08-28	1998-08-26	Methode de blanchiment de pate renfermant de la lignine

Country Status (9)

Country	Link
EP (1)	EP0899373A1 (fr)
JP (1)	JPH11124783A (fr)
KR (1)	KR19990023911A (fr)
CN (1)	CN1211655A (fr)
AU (1)	AU739524B2 (fr)
BR (1)	BR9803764A (fr)
CA (1)	CA2245966A1 (fr)
ID (1)	ID21054A (fr)
ZA (1)	ZA987782B (fr)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6893473B2 (en) *	2002-05-07	2005-05-17	Weyerhaeuser.Company	Whitened fluff pulp
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1998
- 1998-08-19 EP EP98810809A patent/EP0899373A1/fr not_active Withdrawn
- 1998-08-24 ID IDP981160A patent/ID21054A/id unknown
- 1998-08-26 CA CA002245966A patent/CA2245966A1/fr not_active Abandoned
- 1998-08-27 KR KR1019980034765A patent/KR19990023911A/ko not_active Ceased
- 1998-08-27 AU AU81952/98A patent/AU739524B2/en not_active Ceased
- 1998-08-27 ZA ZA987782A patent/ZA987782B/xx unknown
- 1998-08-27 CN CN98118493A patent/CN1211655A/zh active Pending
- 1998-08-27 BR BR9803764-1A patent/BR9803764A/pt not_active Application Discontinuation
- 1998-08-28 JP JP10242891A patent/JPH11124783A/ja active Pending

Also Published As

Publication number	Publication date
ZA987782B (en)	1999-03-01
AU739524B2 (en)	2001-10-18
KR19990023911A (ko)	1999-03-25
JPH11124783A (ja)	1999-05-11
BR9803764A (pt)	2002-05-14
ID21054A (id)	1999-04-08
AU8195298A (en)	1999-03-11
EP0899373A1 (fr)	1999-03-03
CN1211655A (zh)	1999-03-24

Legal Events

Date	Code	Title	Description
2003-08-19	EEER	Examination request
2008-08-26	FZDE	Dead

Publication	Publication Date	Title
CA2245966A1 (fr)	1999-02-28	Methode de blanchiment de pate renfermant de la lignine
US5902454A (en)	1999-05-11	Method of whitening lignin-containing paper pulps
RU2424388C2 (ru)	2011-07-20	Усовершенствованный способ производства целлюлозы, бумаги и картона
CA2247569C (fr)	2010-11-23	Methode pour le blanchiment optique du papier
CA2658971C (fr)	2011-09-27	Compositions et procedes ameliores de production du papier
AU2006213983B2 (en)	2009-11-19	Pulp and paper having increased brightness
US20100252213A1 (en)	2010-10-07	Pulp and paper having increased brightness
EP0905317B1 (fr)	2009-12-23	Procédé d'azurage optique de papier
JP2016510092A (ja)	2016-04-04	紙製造におけるブライトネス改善のためのプロセスおよび組成物
NZ562852A (en)	2010-12-24	Improved composition and processes for paper production
MXPA98007011A (en)	1999-06-01	Method for whitening paperwork paste which contains lignin during fabricac
MXPA98007514A (en)	1999-06-01	A method for optically opening the pa