C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 33/04 (2006.01) B01J 21/16 (2006.01) B01J 35/02 (2006.01) C01B 33/40 (2006.01) C08K 3/34 (2006.01) C09C 1/42 (2006.01) D21H 17/68 (2006.01) D21H 19/40 (2006.01) D21H 21/16 (2006.01) D21H 21/52 (2006.01)
Patent
CA 2490554
The present invention relates to calcined kaolin having an unusually narrow particle size distribution. The calcined kaolin can have a particle size distribution wherein: (I). The calcined kaolin may be prepared from a hydrous kaolin having a particle size distribution, wherein: (II). The calcined kaolin can be used in many applications, such as paint and coating compositions for paper or paper board, and more generally, the inventive products may be used wherever calcined kaolins are used.
La pr~sente invention a trait ~ du kaolin calcin~ pr~sentant une granulom~trie exceptionnellement restreinte. Le kaolin calcin~ peut pr~senter une granulom~trie dans laquelle : la granulom~trie ~ une masse cumulative inf~rieure ~ 80 %/la granulom~trie ~ une masse cumulative inf~rieure ~ 20 % <= 3. Le kaolin calcin~ peut Útre pr~par~ ~ partir d'un kaolin hydrat~ pr~sentant une granulom~trie, dans laquelle : la granulom~trie ~ une masse cumulative inf~rieure ~ 80 %/la granulom~trie ~ une masse cumulative inf~rieure ~ 40 % <= 3,5. Le kaolin calcin~ peut Útre utilis~ dans de nombreuses applications, telles que des compositions de peinture et de revÚtement pour du papier ou du carton, et plus g~n~ralement, les produits de la pr~sente invention peuvent Útre utilis~s dans toutes les applications mettant en oeuvre des kaolins.
Adkins Tommy L.
Sare Edward J.
Goudreau Gage Dubuc
Imerys Kaolin Inc.
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