Coating composition for newsprint

Details Coating composition for newsprint Coating composition for newsprint

C - Chemistry, Metallurgy

09

D

C09D 201/00 (2006.01) C09D 157/00 (2006.01) D21H 17/00 (2006.01) D21H 19/58 (2006.01)

Patent

CA 2058023

Abstract of the Disclosure There is provided a coating composition for newsprint excellent in offset printabilities at the time of cold set type high speed web offset printing such as surface strength, print gloss and ink receptivity. The composition comprises 100 parts by weight of a pigment, preferably 50 weight % or more of which is clay, and 3 to 50 parts by weight, preferably 5 to 40 parts by weight in terms of solid of an amphoteric copolymer latex obtained by copolymerizing an ethylenic unsaturated amine with butadiene or the like. The composition may be one containing 15 parts by weight or less, preferably 10 parts by weight or less of a water soluble polymer binder such as a phosphoric acid-esterified starch, in addition to the amphoteric copolymer latex, in such a range that the total amount of the pigment binders becomes 3 to 50 parts by weight in terms of solid per 100 parts by weight of the pigment.

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