A component for use in paper manufacture, its preparation...

Details A component for use in paper manufacture, its preparation... A component for use in paper manufacture, its preparation...

D - Textiles, Paper

21

H

D21H 17/36 (2006.01) B41M 5/00 (2006.01) C08F 8/28 (2006.01) D21H 19/60 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2523064

An easily water-soluble or water-dispersible sizing component, which contains cationized polyvinyl butyral or other equivalent cationized polyvinyl acetal, for the improvement of surface properties of paper or other equivalent web product. Cationized polyvinyl butyral can be prepared by cationizing polyvinyl butyral or by butyrating cationized polyvinyl alcohol. The sizing component typically contains 50 - 90% polyvinyl butyral or other corresponding polyvinyl acetal, and 10 - 50% of a softener, such as castor oil. The polyvinyl butyral containing sizing component can be used for example in the surface sizing of base paper of release paper and of inkjet paper or in the formation of a barrier layer on the paper surface.

L'invention concerne un composant de collage facilement soluble dans l'eau et dispersable dans l'eau, qui contient du butyral de polyvinyle cationisé ou autre acétal de polyvinyle cationisé équivalent, pour l'amélioration des propriétés de surface du papier ou autre produit en bande équivalent. On peut élaborer le butyral de polyvinyle cationisé par cationisation de butyral de polyvinyle ou par butyration d'alcool de polyvinyle cationisé. Ledit composant contient en général entre 50 et 90 % de butyral de polyvinyle ou autre acétal de polyvinyle correspondant, et entre 10 et 50 % d'adoucissant, du type huile de castor. Le composant peut être utilisé par exemple dans le collage de surface de papier support de papier antiadhésif et de papier pour impression à jet d'encre ou dans la formation d'une couche barrière sur la surface de papier.

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