Pigment compositions and process of shading

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United States of America Patent

PATENT NO 6620235
SERIAL NO

09937978

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Compositions comprising a) a mixture of i) C.I. Pigment Violet 19 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or ii) C.I. Pigment Red 177 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, and b) a dispersant, c) optionally a biocide, and d) water. A process for shading of paper using said compositions or by applying separate pigment dispersions of a) C.I. Pigment Violet 19 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or b) C.I. Pigment Red 177 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60.

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Patent Owner(s)

Patent OwnerAddress
STORA ENSO ABS-791 80 FALUN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Knowles, Ian William Heaton Chapel, GB 3 4
Kumlin, Kjell Erik Karlstad, SE 2 2
Watsfeldt, Robert Billdal, SE 2 2

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