COATING COMPOSITION COMPRISING COLLOIDAL SILICA AND GLOSSY INK JET RECORDING SHEETS PREPARED THEREFROM

Title:

COATING COMPOSITION COMPRISING COLLOIDAL SILICA AND GLOSSY INK JET RECORDING SHEETS PREPARED THEREFROM

Document Type and Number:

WIPO Patent Application WO2003080733

Kind Code:

A3

Abstract:

A coating composition comprising a relatively low alkali-containing colloidal silica and glossy ink jet recording sheets prepared from such coatings is described. The coating comprises binder and colloidal silica, e.g., having an average particle size in the range of about 1 to about 300 nanometers. The low alkali colloidal silica of this invention comprises ammonia, polydispersed colloidal silica, or both. Polydispersed silicas having a particle size distribution such that the median particles size is in the range of 15 to 100 nanometers and 80% of the particles span a range of at least about 30 to about 70 nanometers are preferred. It has been discovered that coatings prepared from such colloidal silica and applied to conventional ink jet recording sheet supports have a specular gloss of at least 30 to 60°C., and excellent printability at silica solids to binder solids ratio of 1:1 or greater.

Inventors:

FRUGE DANIEL RAY (US)
MICHOS DEMETRIUS (US)

Application Number:

PCT/US2003/008346

Publication Date:

April 21, 2005

Filing Date:

March 19, 2003

Export Citation:

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Assignee:

GRACE W R & CO (US)
FRUGE DANIEL RAY (US)
MICHOS DEMETRIUS (US)

International Classes:

B41M5/00; B41M5/50; B41M5/52; C01B33/14; C08K3/36; C09D7/12; C09D201/00; D21H19/14; (IPC1-7): B41M5/00; C09D7/12; C08K3/36; C09D201/00

Foreign References:

EP0586846A1	1994-03-16
EP0685344A2	1995-12-06
EP0759365A1	1997-02-26
EP1016546A2	2000-07-05
EP1008457A1	2000-06-14

Other References: