Aqueous dispersions, a process for their preparation and the...

Details Aqueous dispersions, a process for their preparation and the... Aqueous dispersions, a process for their preparation and the...

C - Chemistry, Metallurgy

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L

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C08L 93/04 (2006.01) D21H 17/07 (2006.01) D21H 17/15 (2006.01) D21H 17/17 (2006.01) D21H 17/62 (2006.01)

Patent

CA 1270352

Abstract Aqueous cationic or anionic dispersions of rosin and certain synthetic sizing agents, carbamoyl chlorides, ketene dimers or acid anhydrides. The particles in the dispersed phase contain a mixture of rosin and synthetic sizing agent and the dispersions are prepared by homogeni- sation of a homogeneous mixture of the rosin material and the synthetic sizing agent in the presence of a dispersing agent. The dispersions are used as sizing agents in the production of paper, paper board, board and similar pro- ducts.

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