Pigment Composition
AssigneeAkzo Nobel N.V.
InventorsErik Lindgren, Kjell Rune Andersson, Olof Ericksson, Yiva Wildlock
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Abstract
The invention relates to an aqueous pigment composition comprising polyalkylene glycol and inorganic pigment particle comprising colloidal silica or silicate based particles or aggregates thereof, wherein polyalkylene glycol constitutes from 50 to 100 wt % of the total amount of organic material in the composition and the weight ratio of colloidal silica 5 or silicate based particles or aggregates thereof to organic material in the composition is from 1:3 to 30:1. The invention further relates to a process for its production, use thereof, a process for coating paper or paper board and coated paper or paper board.
Claims26
An aqueous pigment composition comprising polyalkylene glycol and inorganic pigment particles comprising colloidal silica or silicate based particles or aggregates thereof, wherein polyalkylene glycol constitutes from 50 to 100 wt % of the total amount of organic material in the composition and the weight ratio of colloidal silica or silicate based particles or aggregates thereof to organic material in the composition is from 1:3 to 30:1.
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A process for the production of coated paper or paperboard comprising a step of applying an aqueous pigment composition comprising polyalkylene glycol and inorganic pigment particles comprising colloidal silica or silicate based particles or aggregates thereof, wherein polyalkylene glycol constitutes from 50 to 100 wt % of the total amount of organic material in the composition and the weight ratio of colloidal silica or silicate based particles or aggregates thereof to organic material in the composition is from 1:3 to 30:1 to at least one side of a paper or paperboard web.
A coated paper or paper board having on at least one side a coating comprising polyalkylene glycol and inorganic pigment particles comprising colloidal silica or silicate based particles or aggregates thereof, wherein polyalkylene glycol constitutes from 50 to 100% of the total amount of organic material in the coating and the weight ratio of colloidal silica or silicate based particles or aggregates thereof to organic material in the coating is from 1:3 to 30:1.
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Dependencies are inferred from the claim text.