Filler for ink jet recording paper

Details Filler for ink jet recording paper Filler for ink jet recording paper

1988-06-03

1990-01-09

Willis, Prince E.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106425, 106426, 106419, 106461, 106464, 106465, 106481, C04B 1404

Patent

active

048925918

ABSTRACT:
Disclosed is a filler for ink jet recording paper, said filler being composed of amorphous silica particles having a median diameter, measured by the coulter counter method, of 2 to 15 .mu.m, an oil absorption of at least 180 ml/100 g, a refractive index, measured by the solvent method, of at least 1.450, and a moisture absorption, measured when it is caused to absorb moisture for 200 hours at a relative humidity of 90% and a temperature of 25.degree. C., of at least 35%, and a coating of a compound of a metal of Group II of the periodic table on the surface of the silica particles in an amount of 0.5 to 20% by weight.

REFERENCES:
patent: 3028250 (1962-04-01), Dunn
patent: 3072495 (1963-01-01), Pitrot
patent: 3849149 (1974-11-01), Swift et al.
patent: 4207377 (1980-06-01), Kindrick
patent: 4331706 (1982-05-01), Kindrick
patent: 4463108 (1984-06-01), Wagner et al.

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