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2 330 138

(13)

(51)

IPC

D21H17/69(2006-01-01)

D21H19/00(2006-01-01)

D21H19/64(2006-01-01)

C09C3/10(2006-01-01)

C01F7/02(2006-01-01)

(21) (22)

Application

2006134951/12, 2006-10-04

(24)

Start date

2006-10-04

(22)

Actual filing date

2006-10-04

(45)

Published

2008-07-27

(72)

Inventor

Mazitov Leonid AskhatovichBondarev Anatolij IvanovichTjurin Evgenij TimofeevichFadeeva Lilija Anatol'EvnaGul'Jants Elena Petrovna

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Bumagi"

METHOD OF OBTAINING WHITE PIGMENT FOR MAKING PAPER AND CARDBOARD Russian patent published in 2008 - IPC D21H17/69 D21H19/00 D21H19/64 C09C3/10 C01F7/02

Abstract RU 2330138 C1

FIELD: textiles; paper.

SUBSTANCE: method relates to obtaining white pigment for making paper and cardboard and is designed for use in paper and cardboard production. The method involves reaction of the suspension calcium hydroxide with a solution of aluminium sulphate in the presence of a modifying agent. The modifying agent used is a salt of carboxymethylcellulose in quantity of 1.0-2.0 mass of white pigment. The modifying agent is put into the dispersion of calcium hydroxide before its reaction with aluminium sulphate solution.

EFFECT: lower viscosity of the pigment dispersion and improved flow characteristics.

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RU 2 330 138 C1

Authors

Mazitov Leonid Askhatovich

Bondarev Anatolij Ivanovich

Tjurin Evgenij Timofeevich

Fadeeva Lilija Anatol'Evna

Gul'Jants Elena Petrovna

Dates

2008-07-27—Published

2006-10-04—Filed