Kaolin clay pigments, their preparation and use

C - Chemistry – Metallurgy – 04 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C04B 14/04 (2006.01) C04B 14/10 (2006.01) C09C 1/02 (2006.01) C09C 1/42 (2006.01) D21H 19/40 (2006.01)

Patent

CA 2368750

A paper coating pigment manufactured from kaolin crude containing minor amounts of minerals. These pigments are used in lightweight coated and ultra-lightweight coated applications. The pigments comprise a phyllosilicate assemblage of minerals that yield a final pigment MgO content ranging between 0.04 to 0.3 weight percent and a K2O content ranging between 0.12 and 0.8 weight percent based on the dry weight of the kaolin pigment. The mica in the pigment product is 1.0 % to 6.7 % by weight, and the smectite is 1.2 % to 9.1 % by weight of the kaolin. The presence of these weight percentages can be identified by a shape factor of 15 or greater. The viscous clay content of the feed to produce the pigment product is between 70 to 100 weight percent based on the dry weight of the kaolin clay. The pigment has a shape factor of ranging between 35 and 60 or greater, and greater than 80 % by weight of the particles are less than 2 microns, and greater than 12 % are less than 0.25 microns.

Divulgation d'un pigment pour couchage de papier fabriqué à partir de kaolin brut contenant des quantités mineures de minéraux. Ces pigments sont utilisés pour des applications de papiers couchés légers ou ultra-légers. Ils sont constitués d'un assemblage de phyllosilicates minéraux qui leur donnent une teneur finale en MgO comprise entre 0,04 et 0,3 % en poids et une teneur en K2O comprise entre 0,12 et 0,8 % en poids, sur une base de poids sec du pigment à base de kaolin. Le mica contenu dans le produit représente de 1,0 à 6,7 % en poids et la smectite de 1,2 à 9,1 % en poids du kaolin. La présence de ces pourcentages en poids peut être identifiée par un facteur de forme supérieur ou égal à 15. La teneur en argile visqueuse de la charge destinée à produire le pigment est comprise entre 70 et 100 % en poids, sur une base de poids sec d'argile kaolinique. Le pigment a un facteur de forme compris entre 35 et 60 ou au-delà. Plus de 80 % en poids des particules font moins de 2 microns et plus de 12 % font moins de 0,25 micron.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Kaolin clay pigments, their preparation and use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Kaolin clay pigments, their preparation and use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kaolin clay pigments, their preparation and use will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1756628

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.