Pigment concentrates for coloring seeds
AssigneeCiba Specialty Chemicals Corporation
InventorsFridolin Babler, Kenneth Schumann
Life of this patent
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Abstract
The present invention relates to the use of a pigment form or pigment concentrate comprising of an organic pigment, and optionally an inorganic filler and/or an organic additive for coloring of seeds. Seeds colored by the dry pigment forms or pigment concentrates show an homogeneous color and in some cases growth promotion effects.
Claims23
A colored seed having an exterior surface coated with at least one layer comprising an instant pigment form or pigment concentrate wherein at least 95 percent of the pigment particles in the corresponding pigment form or pigment concentrate have a particle size in the range from 0.1 μm to 9 μm with at least 50 percent of the pigment particles having a particle size in the range from 0.5 μm to 3.5 μm.
A colored seed having an exterior surface coated with at least one layer comprising an instant pigment concentrate comprising from 1 to 40 parts by weight of an inorganic filler and from 60 to 99 parts by weight of an organic pigment having an average particle size of 0.001 to 10 μm relative to one another.
A colored seed having at least one layer comprising an instant pigment concentrate that comprises from 85 to 99.5 parts by weight of an organic pigment, and from 0.5 to 15 parts by weight of a polar polymer or copolymer having a weight average molecular weight of not more than 300,000.
A process for coloring seeds comprising contacting a plurality of seeds with a dry pigment concentrate or a liquid media containing said pigment form or pigment concentrate that comprises a pigment form or pigment concentrate wherein at least 95 percent of the pigment particles in the corresponding pigment form or pigment concentrate have a particle size in the range from 0.1 μm to 9 μm with at least 50 percent of the pigment particles having a particle size in the range from 0.5 μm to 3.5 μm.
A process for coloring seeds comprising contacting a plurality of seeds with a dry pigment concentrate or a liquid media containing said pigment concentrate that comprises from 1 to 40 parts by weight of an inorganic filler and from 60 to 99 parts by weight of an organic pigment having an average particle size of 0.001 to 10 μm to form a coating thereon.
A process for coloring seeds comprising contacting a plurality of seeds with a dry pigment concentrate or a liquid media containing said pigment concentrate that comprises from 0.5 to 15 parts by weight of a polar polymer or copolymer having a weight average molecular weight of not more than 300,000 and from 85 to 99.5 parts by weight of an organic pigment to form a coating thereon.
Dependencies are inferred from the claim text.