Cationized pigments and their use in papermaking

Details Cationized pigments and their use in papermaking Cationized pigments and their use in papermaking

1995-12-18

1997-07-22

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106446, 106448, 106487, 1621643, 1621646, 1621814, 1621815, C09C 310, C04B 1410, C04B 1436, D21H 1768

Patent

active

056500033

ABSTRACT:
A pigment composition containing titanium dioxide (TiO.sub.2) and calcined clay in a weight ratio of between about 30:70 and 70:30, preferably between about 35:65 and 45:55 that is substantially free of a functional microgel component has advantages over a similar pigment containing a functional microgel. The pigment composition contains an amount of epichlorohydrin dimethylamine condensate that is sufficient to cationize the pigment, and lacks a microgel component. It is liquid when agitated. Preferably the composition has a solids content greater than about 55%, and most preferably between about 59% and about 61%.

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