Cationic polymer-modified filler material, process for its...

Details Cationic polymer-modified filler material, process for its... Cationic polymer-modified filler material, process for its...

C - Chemistry, Metallurgy

09

C

9/58, 117/48.1

C09C 3/10 (2006.01) D21H 17/17 (2006.01) D21H 17/55 (2006.01) D21H 17/67 (2006.01) D21H 17/68 (2006.01) D21H 17/69 (2006.01)

Patent

CA 2037525

Material, such as natural ground and precipitated calcium carbonate, when modified by surface-treatment with a cationic polymer, has been discovered to be highly effective as a filler material in the making of paper. Utilization of this type of filler material greatly improves the papermaking process by reducing the usage of wet end sizing agent, improving opacity, improving filler retention in the furnish, and causing better drainage on the papermachine, all of which result in the production of a high quality paper having excellent opacity and tensile strength characteristics. The nature of the polymer- modified filler material, the process for its preparation and the method of its use in papermaking are disclosed.

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