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2 499 094

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(51)

IPC

D21H23/02(2006-01-01)

D21H17/69(2006-01-01)

D21H21/16(2006-01-01)

D21H17/29(2006-01-01)

(21) (22)

Application

2012142264/12, 2012-10-05

(24)

Start date

2012-10-05

(22)

Actual filing date

2012-10-05

(45)

Published

2013-11-20

(72)

Inventor

Tjurin Evgenij TimofeevichZujkov Aleksandr AleksandrovichOsminin Evgenij NikitovichTovstoshkurova Dominika UstinovnaErmakova Tat'Jana IvanovnaBychkov Vadim AndreevichAzanova Galina Nikolaevna

(73)

Holder

Rossijskaja Federatsija V Litse Ministerstva Promyshlennosti I Torgovli Rossijskoj Federatsii

METHOD OF PRODUCTION OF PAPER PULP Russian patent published in 2013 - IPC D21H23/02 D21H17/69 D21H21/16 D21H17/29

Abstract RU 2499094 C1

FIELD: textiles, paper.

SUBSTANCE: method of production of paper pulp for making filled kinds of paper with use of calcium carbonate as the filler comprises preparing suspensions of milled cellulose and calcium carbonate, adding to them of the predetermined amounts of the modifying agent in the form of nano powders of oxide or hydroxide of aluminium or their mixtures, mixing the dispersions to obtain a fibrous mass, and adding to it of the gluing component and the auxiliary agent to obtain the paper pulp. As a gluing component the alkylketene dimer is used, and as an auxiliary agent the cationic starch is used in amounts of 0.3-0.4, and 0.5-0.7%, based on dry substance in the paper pulp.

EFFECT: increased degree of retention of the filler.

1 tbl, 5 ex

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RU 2 499 094 C1

Authors

Tjurin Evgenij Timofeevich

Zujkov Aleksandr Aleksandrovich

Osminin Evgenij Nikitovich

Tovstoshkurova Dominika Ustinovna

Ermakova Tat'Jana Ivanovna

Bychkov Vadim Andreevich

Azanova Galina Nikolaevna

Dates

2013-11-20—Published

2012-10-05—Filed