Novel paper coating composition
AssigneeKanegaufchi Chemical Industries, Co. Ltd.
InventorsAtsushi Ichikawa, Norihiko Adachi, Masayoshi Kawanabe, Yozi Hisada, Yuichi Kohzaki
Life of this patent
Estimating the term…
Abstract
A paper coating composition comprising (A) a pigment as a main ingredient and (B) a binder for said pigment which is either (a) an alkali decomposition product of a yeast or (b) a mixture of said alkali decomposition product of a yeast and an emulsion of a synthetic polymer and/or an aqueous solution of a natural or snythetic polymer and the paper coating composition coated paper product are disclosed.
Claims13
A paper coating composition comprising (A) a pigment as a main ingredient and (B) as a binder for said pigment an alkali decomposition product of a yeast produced by heating said yeast with alkali at 30.degree.-100.degree.C for ten minutes to ten hours, said yeast being decolored prior to alkali decomposition with sodium boron hydrate as a reducing agent.
Dependencies are inferred from the claim text.