JPS6452892A - Method for bleaching wood pulp - Google Patents

Method for bleaching wood pulp

Info

Publication number
JPS6452892A
JPS6452892A JP20930487A JP20930487A JPS6452892A JP S6452892 A JPS6452892 A JP S6452892A JP 20930487 A JP20930487 A JP 20930487A JP 20930487 A JP20930487 A JP 20930487A JP S6452892 A JPS6452892 A JP S6452892A
Authority
JP
Japan
Prior art keywords
coox
pulp
methyl
bleaching wood
peroxides
Prior art date
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.)
Granted
Application number
JP20930487A
Other languages
Japanese (ja)
Other versions
JPH0240791B2 (en
Inventor
Naotake Shioji
Masazumi Sasabe
Teruaki Fujiwara
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.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai Co Ltd
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.)
Filing date
Publication date
Application filed by Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP20930487A priority Critical patent/JPH0240791B2/en
Publication of JPS6452892A publication Critical patent/JPS6452892A/en
Publication of JPH0240791B2 publication Critical patent/JPH0240791B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Paper (AREA)

Abstract

PURPOSE: To provide a method for bleaching wood pulps by using peroxides and a little auxiliary agent while making no scale trouble and preventing any trouble of e.g. the corrosions of the device involved or red tides by using a little amount of specific polycarboxylic acid-based (co)polymer. CONSTITUTION: This method for bleaching wood pulps (pref. a high yield pulp, deinked pulp or kraft pulp) by peroxides is conducted by using, based on an absolute dry pulp, 0.05 to 1 wt.% of polycarboxylic acid-based (co)polymer having a repeating unit of the formula (A<1> and A<2> are each H, a methyl or -COOX<2> , noted that A<1> and A<2> are not simultaneous -COOX<2> ; A3 is H, a methyl or -CH2 COOX<3> , noted that A<1> and A2 are each H or a methyl when A3 is -CH2 COOX<3> ; and X<1> to X<3> are each H, an 1 to 2-valent metal, ammonium or organic amine) as a main unit and having a molecular weight of 800 to 80,000.
JP20930487A 1987-08-25 1987-08-25 MOKUZAI PARUPUNOHYOHAKUHOHO Expired - Lifetime JPH0240791B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20930487A JPH0240791B2 (en) 1987-08-25 1987-08-25 MOKUZAI PARUPUNOHYOHAKUHOHO

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20930487A JPH0240791B2 (en) 1987-08-25 1987-08-25 MOKUZAI PARUPUNOHYOHAKUHOHO

Publications (2)

Publication Number Publication Date
JPS6452892A true JPS6452892A (en) 1989-02-28
JPH0240791B2 JPH0240791B2 (en) 1990-09-13

Family

ID=16570737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20930487A Expired - Lifetime JPH0240791B2 (en) 1987-08-25 1987-08-25 MOKUZAI PARUPUNOHYOHAKUHOHO

Country Status (1)

Country Link
JP (1) JPH0240791B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148891A (en) * 1987-12-04 1989-06-12 Nippon Shokubai Kagaku Kogyo Co Ltd Method for bleaching wood pulp
JPH01148890A (en) * 1987-12-01 1989-06-12 Nippon Shokubai Kagaku Kogyo Co Ltd Method for bleaching wood pulp
JP2008163496A (en) * 2006-12-27 2008-07-17 San Nopco Ltd Bleaching aid for cellulose pulp and method for producing bleached cellulose pulp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148890A (en) * 1987-12-01 1989-06-12 Nippon Shokubai Kagaku Kogyo Co Ltd Method for bleaching wood pulp
JPH01148891A (en) * 1987-12-04 1989-06-12 Nippon Shokubai Kagaku Kogyo Co Ltd Method for bleaching wood pulp
JP2008163496A (en) * 2006-12-27 2008-07-17 San Nopco Ltd Bleaching aid for cellulose pulp and method for producing bleached cellulose pulp

Also Published As

Publication number Publication date
JPH0240791B2 (en) 1990-09-13

Similar Documents

Publication Publication Date Title
JPS6452892A (en) Method for bleaching wood pulp
DE2965428D1 (en) Agent usable for the production of cellulose and process for the production of cellulose
NO165188C (en) SYNTHESIS OF 1,1,2,2-TETRAHYDROPERFLUORAL CHANNELS AND THEIR ESTERS.
SE8006100L (en) BINDER
BR0009920A (en) Process for Causticizing Alkaline Solutions
JPS534793A (en) Production of stable anhydrous sodium dithionite
KR830006187A (en) Manufacturing method of femide
JPS5223322A (en) Percussion instrument
ES2005153A6 (en) Functionalization of iodo-polyfluoroalcanes by electrochemical reduction, and fluorinated compounds so obtained.
JPS52101506A (en) Rail
JPS52102889A (en) Production of hydrogel
JPS51126841A (en) Reinforced light-fiber
JPS5676409A (en) Modification of olefin polymer
JPS5250000A (en) Method for producing fibrous alkali tianate
ZA771491B (en) Process of increasing the yield of pulp by oxygen pretreatment of wood chips prior to chemical pulping
CA2005574A1 (en) Primary hindered aminoacids for promoted acid gas scrubbing process
JPS5392889A (en) Curable composition
JPS53145517A (en) Video amplifier circuit
JPS53142398A (en) Production of dithionite
JPS5374530A (en) Preparation of triarylmethane acidic dye
JPS5742717A (en) Polycarbonate-urea and its production
JPS6419063A (en) Novel heterocyclic compound and use thereof
JPS5283650A (en) Abietalinide derivatives
JPS53121049A (en) Prepararion of inorganic fiber board
JPS5533460A (en) Cis-3-hexene derivative