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2 368 716

(13)

(51)

IPC

D21C3/02(2006-01-01)

D21C3/22(2006-01-01)

(21) (22)

Application

2008115272/12, 2008-04-17

(24)

Start date

2008-04-17

(22)

Actual filing date

2008-04-17

(45)

Published

2009-09-27

(72)

Inventor

Khakimova Firdaves KharisovnaKovtun Tat'Jana NikolaevnaKhakimov Roman RashidovichNoskova Ol'Ga Alekseevna

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Tekhnicheskij Universitet"

METHOD OF PULPING Russian patent published in 2009 - IPC D21C3/02 D21C3/22

Abstract RU 2368716 C1

FIELD: textiles; paper.

SUBSTANCE: method refers to sulphate pulping and can be used in pulp and paper industry. The method comprises cooking hardwood chip in alkaline cooking liquor in the presence of organic additive. SAA of non-ionic type - OS-20 compound is used as additive. This is a mixture of polyoxyethylene glycolic esters of higher fatty alcohols. Additive consumption during the process makes 0.02-0.15% of absolutely dry wood weight.

EFFECT: acceleration of delignification process, increase in sulfate cellulose softness and ecological processes, pulldown of common and hazardous resin content in cellulose and high degumming provision.

2 tbl, 4 ex

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RU 2 368 716 C1

Authors

Khakimova Firdaves Kharisovna

Kovtun Tat'Jana Nikolaevna

Khakimov Roman Rashidovich

Noskova Ol'Ga Alekseevna

Dates

2009-09-27—Published

2008-04-17—Filed