Quality of multiple coated paper

Details Quality of multiple coated paper Quality of multiple coated paper

1997-10-27

1999-03-23

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

10621701, 1062872, 10628725, 427326, 427395, 427402, L09D 712

Patent

active

058853405

ABSTRACT:
A method of producing a multiple coated cellulosic sheet product having a surface which is smooth, bright and capable of being printed upon, includes the steps of coating a substrate comprising a cellulosic sheet with a first layer of an inorganic pigment-containing aqueous coating composition, and coating the first layer with a second layer of an inorganic pigment-containing aqueous coating composition to form a product in which the first layer is bonded to the cellulosic sheet and the second layer is bonded to and inseparable from the first layer, wherein there is incorporated into the first layer a sizing agent in an amount of up to 0.6% by weight based on the dry weight of the pigment present in the first layer. The sizing agent is selected from alkene ketene dimers, alkenyl succinic anhydrides, and anionic polyurethane sizes.

REFERENCES:
patent: 2627477 (1953-02-01), Downey
patent: 3102064 (1963-08-01), Wurzburg et al.
patent: 4310360 (1982-01-01), Kvant
patent: 4859244 (1989-08-01), Floyd

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