A process for the manufacture of coated liquid packaging board

Details A process for the manufacture of coated liquid packaging board A process for the manufacture of coated liquid packaging board

D - Textiles, Paper

21

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D21H 17/63 (2006.01) C01F 7/02 (2006.01) D21H 17/17 (2006.01) D21H 17/62 (2006.01) D21H 21/16 (2006.01) D21H 17/66 (2006.01) D21H 17/67 (2006.01) D21H 27/10 (2006.01)

Patent

CA 2335823

The process makes use of a sizing dispersion which is comprised of an aqueous dispersion of resin material, a synthetic sizing agent and an aluminium compound selected in the group including aluminium sulphate and aluminium polymers having the formulas (1): [Al(OH)x(A)(3-x)]n, or (2): [Al(OH)x(H3PO4)y(A)(3-x)]n, wherein A = Cl-, NO3-, HCOO-, CH3COO-; or (3): [Al(OH)x(H3PO4)y(SO4)(3-x)/2]n where "x" is comprised between 0.03 and 2.7, and "y" ranges from 0.01 and 0.8, and n 2; and mixtures thereof.

L'invention concerne un procédé consistant à utiliser une dispersion collante comprenant une dispersion aqueuse de matériau de résine, un agent de collage synthétique et un composé d'aluminium sélectionné dans le groupe formé de sulfate d'aluminium et de polymères d'aluminium de formule (1): [Al(OH)¿x?(A)¿(3-x)?]¿n? ou (2): [Al(OH)¿x?(A)¿(3-x)?]¿n? dans laquelle A = Cl?-¿, NO¿3??-¿, HCOO?-¿, CH¿3?COO?-¿; ou (3): [Al(OH)¿x?(H¿3?PO¿4?)¿y?(SO¿4?)¿(3-x)/2?]¿n? dans laquelle "x" est compris entre 0,03 et 2,7 et "y" entre 0,01 et 0,8 et n ? 2; et de ses mélanges.

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