Structured boehmite pigment and method for making same

Details Structured boehmite pigment and method for making same Structured boehmite pigment and method for making same

C - Chemistry, Metallurgy

09

C

C09C 1/40 (2006.01) C01F 7/02 (2006.01) C01F 7/44 (2006.01) C08K 3/22 (2006.01) C09D 5/00 (2006.01) C09D 7/00 (2006.01)

Patent

CA 2323289

A structured boehmite pigment which comprises a plurality of alumina monohydrate particles. The pigment is particularly useful as a flatting pigment in paint and as an anti-block agent in plastic film. The boehmite pigment has an aggregate median particle size of about 8 to about 30 microns; a total pore volume of at least about 0.8 ml/g; a differential pore volume of less than about 0.3 ml/g; an oil absorption of about 70 to about 135 ml/g; a BET surface area of about 3 to about 20 m2/g, and a TAPPI brightness of at least about 90.

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