Method of coating paper using a blend of a vinyl...

Details Method of coating paper using a blend of a vinyl... Method of coating paper using a blend of a vinyl...

D - Textiles, Paper

21

H

D21H 19/58 (2006.01)

Patent

CA 2542254

A method comprising: (I) providing a composition; (II) applying the composition to a paper substrate; and (III) forming a paper coating on the paper substrate; wherein the composition comprises a blend of polymers, wherein the blend of polymers comprises a vinyl aromatic-acrylic polymer and a vinyl aromatic-diene polymer, wherein the vinyl aromatic-acrylic polymer comprises a reaction product of vinyl aromatic and an alkyl (meth)acrylate, and the vinyl aromatic-diene polymer comprises a reaction product of vinyl aromatic and a conjugated diene, wherein, based on a solids weight of all polymers in the blend of polymers, the vinyl aromatic-acrylic polymer is present in the blend of polymers in an amount from 50% to about 95% and the vinyl aromatic-diene polymer is present in an amount from about 5% to 50%.

L'invention concerne un procédé de couchage consistant : (I) à fournir une composition ; (II) à appliquer la composition sur un papier support ; et (III) à former un enduit sur le papier support. La composition utilisée renferme un mélange polymérique constitué d'un polymère acrylique-vinyle aromatique et d'un polymère diène-vinyle aromatique, le polymère acrylique-vinyle aromatique comprenant un produit issu de la réaction entre un vinyle aromatique et un (méth)acrylate d'alkyle et le polymère diène-vinyle aromatique comprenant un produit issu de la réaction entre un vinyle aromatique et un diène conjugué. Le mélange polymérique renferme, en termes de masse solide de polymères, entre 50 % et 95 % environ de polymère acrylique-vinyle aromatique et entre 5 % et 50 % environ de polymère diène-vinyle aromatique

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