C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 9/04 (2006.01) D21C 5/02 (2006.01)
Patent
CA 2048128
65702-385 Abstract of the Disclosure A deinking agent having an excellent ability to remove ink and a good workability is disclosed. A deinked pulp having a high b value and contaminated with substantially no unliberated ink can be obtained either by the flotation method, the washing method or a compromise procedure thereof. The deink- ing agent comprises a mixture of higher fatty acids having 8 to 24 carbon atoms or salts thereof, wherein the average carbon atom number of fatty acids in the mixture ranges from 12.7 to 22.5, the content of higher fatty acids having 20 to 24 carbon atoms or salts thereof ranges from 9.6 to 70.6% by weight and the iodine value (IV) is not more than 45, as an essential component. The deinking agent may further contain an alkylene oxide adduct of an alcohol, a carboxylic acid or a mixture of natural oil and polyhydric alcohol or a sulfate of the adduct.
Hamaguchi Koji
Ishibashi Yoichi
Miyauchi Yoshitaka
Shiroishi Takanobu
Takahashi Hiromichi
Kao Corporation
Smart & Biggar
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