Patent ID: 9644060
Date: 2017-05-09
CPC Classifications: B41M,C08F

Claim:
1. An inkjet recording medium comprising a support and the hydrophobic crosslinkable acetoacetylated lactam/vinyl alcohol copolymer wherein the copolymer is formed by: a) polymerizing vinylpyrrolidone and vinyl acetate monomers to produce a poly(vinylpyrrolidone/vinyl acetate) copolymer, wherein the resulting poly(vinylpyrrolidone/vinyl acetate) copolymer is between 30% and 70% vinylpyrrolidone monomers by weight and between 30% and 70% vinyl acetate monomers by weight; b) at least partially hydrolyzing the vinyl acetate of the poly(vinylpyrrolidone/vinyl acetate) copolymer to produce a poly(vinylpyrrolidone/vinyl alcohol) copolymer optionally comprising vinyl acetate depending on degree of hydrolyzation; and c) in an acetoacetylation step, at least partially acetoacetylating the vinyl alcohol of the poly(vinylpyrrolidone/vinyl alcohol) copolymer with a diketene to obtain the hydrophobic, crosslinkable acetoacetylated lactam/vinyl alcohol copolymer.