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(11)

2 490 384

(13)

(51)

IPC

D21C3/04(2006-01-01)

(21) (22)

Application

2012111292/12, 2012-03-23

(24)

Start date

2012-03-23

(22)

Actual filing date

2012-03-23

(45)

Published

2013-08-20

(72)

Inventor

Kuznetsov Boris NikolaevichJatsenkova Ol'Ga VladimirovnaDanilov Vladimir Grigor'Evich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Uchrezhdenie Nauki Institut Khimii I Khimicheskoj Tekhnologii Sibirskogo Otdelenija Rossijskoj Akademii Nauk So Ran)

METHOD OF PRODUCTION OF CELLULOSE Russian patent published in 2013 - IPC D21C3/04

Abstract RU 2490384 C1

FIELD: textiles, paper.

SUBSTANCE: method of production of cellulose lies in cooking wood chips at a temperature of 90-98°C, thorough mixing and at atmospheric pressure of 740-760 mm Hg in a mixture containing 3.9-5.6 wt % hydrogen peroxide, 25.2-26.7 wt % acetic acid in the presence of 2.0 % by weight of sulfuric acid catalyst chips with a duration of cooking of 2.5-3.5 hours, and irrigation modulus of 5-10 with subsequent isolation of the target product.

EFFECT: simplifying the method of production of cellulose, increase in target product yield, improvement of quality characteristics of the target product by increasing the content in it of holocellulose and reduction of residual lignin.

1 tbl, 11 ex

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RU 2 490 384 C1

Authors

Kuznetsov Boris Nikolaevich

Jatsenkova Ol'Ga Vladimirovna

Danilov Vladimir Grigor'Evich

Dates

2013-08-20—Published

2012-03-23—Filed