Fibre-based support containing a layer of a functionalized watersoluble polymer, method of production and use thereof
AssigneeMunksjö Oyj
InventorDiego Fantini
Life of this patent
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Abstract
A cellulose and/or synthetic fiber-based support of which at least one surface is coated with a layer containing at least one water-soluble polymer comprising hydroxyl or primary-secondary amino functional groups, at least some of which have been functionalized beforehand with at least one organic compound comprising at least one epoxy functional group, and at least one R1 group wherein R1 is a vinyl functional group or at least one Si(R2)3 functional group and wherein R2=hydrogen atom, hydroxyl, alkoxy, alkyl, and combinations thereof.
Claims6
A method for producing a coated cellulose and/or synthetic fibre-based support which comprises a cellulose and/or synthetic fiber-based support sheet and a coating layer on at least one surface of the support sheet, wherein the method comprises the steps of:
- (a) forming a cellulose and/or synthetic fibre-based support sheet with or without a parchementizing process;
- (b) functionalizing at least one water-soluble polymer comprising hydroxyl or primary-secondary amino functional groups by grafting at least one organic molecule comprising at least one epoxy group and at least one R1 functional group onto the water-soluble polymer, wherein R1 is a vinyl group or at least one —Si(R2)3 functional group, where R2 is selected from the group consisting of hydrogen, hydroxyl, alkoxy, alkyl, and combinations thereof;
- (c) coating the cellulose and/or synthetic fibre-based support sheet obtained according to step (a) with a layer comprising the at least one functionalized water-soluble polymer obtained according to step (b) to obtain the coated cellulose and/or synthetic fibre-based support;
- and
- (d) optionally calendering or supercalendering the coated cellulose and/or synthetic fibre-based support.
Dependencies are inferred from the claim text.