Formulated composition of pulp digesting assistant agent

Details Formulated composition of pulp digesting assistant agent Formulated composition of pulp digesting assistant agent

D - Textiles, Paper

21

C

D21C 3/00 (2006.01) D21H 17/06 (2006.01)

Patent

CA 2111921

ABSTRACT OF THE DISCLOSURE A formulated pulp digesting assistant agent is provided which allows particulate anthraquinone to be easily dispersed and dissolved in the pulp digesting liquid and precludes the harm otherwise done to the environmental hygiene by the powder as when it is drifted in a wind. This composition is obtained by mixing a particulate anthraquinone having an average particle diameter of not more than 10 µm and a maximum particle diameter of not more than 30 µm, 0.1 to 2% by weight, based on the amount of the particulate anthraquinone, of a nonionic surfactant mixture comprising an alkylene oxide adduct of a secondary alcohol, having an HLB value in the range of 12 to 16 and carbon numbers from 10 to 16 and an alkylene oxide adduct of an alkyl phenol having HLB value in the range of 12 to 16 and an alkyl group having carbon numbers from 6 to 12 at a weight ratio in the range of 5 : 1 to 1 : 5, and 5 to 30% by weight based on the amount of the formulated pulp digesting assistant agent of water and/or an alcohol having a molecular weight of not more than 200.

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