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US 5,332,623 AGranted
Photographic support material
AssigneeFelix Schoeller jr. Papierfabrik GmbH & Co. KG
InventorRalf-Burkhard Dethlefs
Life of this patent
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Abstract
A photographic support material includes a base paper and at least one polyolefin layer arranged on the base paper and containing titanium dioxide, and a methyl substituted chinacridone red pigment in the polyolefin which is a chinolino (2,3-b) acridine-7,14-dione-5,12-dihydro-3,10-dimethyl.
Claims5
A photographic support material comprising:
- a photographic support base material;
- at least one polyolefin layer on said base material and containing a white light reflecting pigment therein;
- and
- a methyl substituted chinacridone red pigment in said polyolefin layer, said red pigment comprising a chinolino (2,3-b) acridine-7,14-dione-5,12-dihydro-3,10-dimethyl having a particle size of >100 nm, a density of <1.4 g/cm.sup.3, and a specific surface of <65 m.sup.2 /g as measured by the BET procedure.
1 more element
Dependencies are inferred from the claim text.