JP2005350778A5 - - Google Patents

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Publication number
JP2005350778A5
JP2005350778A5 JP2004169367A JP2004169367A JP2005350778A5 JP 2005350778 A5 JP2005350778 A5 JP 2005350778A5 JP 2004169367 A JP2004169367 A JP 2004169367A JP 2004169367 A JP2004169367 A JP 2004169367A JP 2005350778 A5 JP2005350778 A5 JP 2005350778A5
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JP
Japan
Prior art keywords
pulp
bleaching method
light
pulp bleaching
light irradiation
Prior art date
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Application number
JP2004169367A
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Japanese (ja)
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JP2005350778A (en
JP4603298B2 (en
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Application filed filed Critical
Priority claimed from JP2004169367A external-priority patent/JP4603298B2/en
Priority to JP2004169367A priority Critical patent/JP4603298B2/en
Priority to CN2005800255211A priority patent/CN1993518B/en
Priority to EP05748560A priority patent/EP1790771A4/en
Priority to PCT/JP2005/010521 priority patent/WO2005121442A1/en
Priority to CA2569848A priority patent/CA2569848C/en
Priority to US11/628,961 priority patent/US20070246176A1/en
Publication of JP2005350778A publication Critical patent/JP2005350778A/en
Publication of JP2005350778A5 publication Critical patent/JP2005350778A5/ja
Publication of JP4603298B2 publication Critical patent/JP4603298B2/en
Application granted granted Critical
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Claims (7)

パルプの漂白方法であって、酸処理後洗浄したパルプをアルカリ性条件下で、波長１００〜４００ｎｍの紫外光及び／又は可視光を照射することを特徴とするパルプの漂白方法。 A method for bleaching pulp, which comprises irradiating ultraviolet light and / or visible light having a wavelength of 100 to 400 nm under alkaline conditions on a pulp washed after acid treatment. 前記アルカリ性条件が、ｐH１０〜１３の範囲であることを特徴とする請求項１記載のパルプの漂白方法。 The pulp bleaching method according to claim 1, wherein the alkaline condition is in a range of pH 10 to 13. 前記酸処理が、ｐＨ１〜６、温度８０℃以上の条件下で行われることを特徴とする請求項１又は２いずれか記載のパルプの漂白方法。 The pulp acid bleaching method according to claim 1 or 2, wherein the acid treatment is performed under conditions of pH 1 to 6 and a temperature of 80 ° C or higher. 前記酸処理が、オゾンの存在下、ｐＨ１．０〜８．０、温度２５〜９５℃、の条件下で行われることを特徴とする請求項１又は２いずれか記載のパルプの漂白方法。 The pulp bleaching method according to claim 1 or 2, wherein the acid treatment is performed under conditions of pH 1.0 to 8.0 and temperature 25 to 95 ° C in the presence of ozone. 光照射処理が、還元剤、過酸化物、水素供与性有機化合物の群の中から選ばれた少なくとも1種類の化合物の存在下で行われることを特徴とする請求項１〜４いずれか記載のパルプの漂白方法。 The light irradiation treatment is performed in the presence of at least one kind of compound selected from the group consisting of a reducing agent, a peroxide, and a hydrogen-donating organic compound. Pulp bleaching method. 前記紫外光及び／又は可視光の照射光源が、波長特性の異なる複数光源からなることを特徴とする請求項１〜５いずれか記載パルプの漂白方法。 The pulp bleaching method according to claim 1, wherein the ultraviolet light and / or visible light irradiation light source comprises a plurality of light sources having different wavelength characteristics. 光照射処理を複数回繰り返すことを特徴とする請求項１〜６いずれか記載のパルプの漂白方法。 7. The pulp bleaching method according to claim 1, wherein the light irradiation treatment is repeated a plurality of times.
JP2004169367A 2004-06-08 2004-06-08 Pulp bleaching method Expired - Fee Related JP4603298B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2004169367A JP4603298B2 (en) 2004-06-08 2004-06-08 Pulp bleaching method
CA2569848A CA2569848C (en) 2004-06-08 2005-06-08 Pulp bleaching processes
EP05748560A EP1790771A4 (en) 2004-06-08 2005-06-08 Pulp bleaching processes
PCT/JP2005/010521 WO2005121442A1 (en) 2004-06-08 2005-06-08 Method for bleaching pulp
CN2005800255211A CN1993518B (en) 2004-06-08 2005-06-08 Pulp bleaching processes
US11/628,961 US20070246176A1 (en) 2004-06-08 2005-06-08 Pulp Bleaching Processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004169367A JP4603298B2 (en) 2004-06-08 2004-06-08 Pulp bleaching method

Publications (3)

Publication Number Publication Date
JP2005350778A JP2005350778A (en) 2005-12-22
JP2005350778A5 true JP2005350778A5 (en) 2007-07-19
JP4603298B2 JP4603298B2 (en) 2010-12-22

Family

ID=35585488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004169367A Expired - Fee Related JP4603298B2 (en) 2004-06-08 2004-06-08 Pulp bleaching method

Country Status (2)

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JP (1) JP4603298B2 (en)
CN (1) CN1993518B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7914646B2 (en) * 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production
CN115467178A (en) * 2022-09-21 2022-12-13 江西给力纺织有限公司 Fading treatment method for leftover materials of spandex-containing waste cloth

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294654A (en) * 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation
JP2593392B2 (en) * 1992-10-20 1997-03-26 本州製紙株式会社 Pulp bleaching method
FI102301B (en) * 1994-10-13 1998-11-13 Andritz Oy Method for treating cellulosic pulps
JP3787612B2 (en) * 2000-06-20 2006-06-21 独立行政法人産業技術総合研究所 Pulp bleaching method
JP3368336B2 (en) * 2000-06-20 2003-01-20 独立行政法人産業技術総合研究所 Pulp bleaching method
JP3371228B2 (en) * 2000-06-20 2003-01-27 独立行政法人産業技術総合研究所 Pulp bleaching method
JP2002235296A (en) * 2001-02-09 2002-08-23 Sumitomo Chem Co Ltd Water-soluble resin composition

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