Poly(viny lalcohol)-co-poly(n-vinyl formamide) copolymers
Disclosed are ink jet recording media systems that comprise a poly(vinyl alcohol)-co-poly(N-vinyl formamide) copolymer of the formula, wherein n is between 0 and about 20 mole percent, m is between about 50 and about 97 mole percent, x is between 0 and about 20 mole percent, y is between 0 and about 20 mole percent, z is between 0 and about 2 mole percent and x+y is between about 3 and about 20 mole percent, R 1 and R 3 are independently H; 3-propionic add or C 1 -C 6 alkyl ester thereof; or is 2-methyl-3-propionic acid or C 1 -C 6 alkyl ester thereof, and R 2 and R 4 are independently H or C 1 -C 6 alkyl.
1 . An ink jet recording media system that comprises a support and one or more coating layers thereon, wherein at least one coating layer comprises a copolymer of the formula
wherein
n is between 0 and about 20 mole percent,
m is between about 50 and about 97 mole percent,
x is between 0 and about 20 mole percent,
y is between 0 and about 20 mole percent,
z is between 0 and about 2 mole percent and
x+y is between about 3 and about 20 mole percent,
R 1 and R 3 are independently H; 3-propionic acid or C 1 -C 6 alkyl ester thereof; or is 2-methyl-3-propionic acid or C 1 -C 6 alkyl ester thereof, and
R 2 and R 4 are independently H or C 1 -C 6 alkyl.
2 . A recording media system according to claim 1 in which the weight average molecular weight M W of the copolymer is between about 10,000 and about 300,000.
3 . A recording media system according to claim 1 in which the copolymer has a weight average molecular weight Mw between about 30,000 and about 130,000, and wherein
n is between 0 and about 5 mole percent,
m is between about 75 and about 90 mole percent,
x is between 0 and about 20 mole percent,
y is between 0 and about 20 mole percent,
z is between 0 and about 2 mole % percent and
x+y is between about 3 and about 20 mole percent.
4 . A recording media system according to claim 1 which comprises a coating directly on a support, wherein the coating comprises the copolymer.
5 . A recording media system according to claim 1 which comprises a support and at least one ink jet ink receptive layer, wherein one or more than one of said receptive layers comprises the copolymer.
6 . A recording media system according to claim 5 , in which one or more than one of said receptive layers further comprises at least one polymer selected from the group consisting of gelatin, starch, styrene butadiene rubber latex, homopolymers and copolymers of (meth)acrylic acid esters, polyacrylic acid, nitrile butadiene rubber latex, polyethylene glycol, polyacrylamide, polyvinyl alcohol, polyurethane latexes and dispersions, vinyl alcohovvinyl acetate copolymer, polyalkyl oxazoline, polyphenyl oxazoline, polyethylene-imines, methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropy methyl cellulose, hydroroxypropyl ethyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, poly(N-vinyl heterocycles) such as poly(N-vinyl pyrrolidone), (co)polymers of linear poly(N-vinylamides), (co)polymers of polyvinylamine and cationic polymers.
7 . A recording media system according to claim 5 which further comprises a barrier layer between the support and the ink receptive layer or layers.
8 . A recording media system according to claim 1 which comprises a support, at least one ink jet ink receptive layer, and a protective coating layer, wherein said protective coating layer comprises the copolymer.
9 . A recording media system according to claim 5 which comprises a protective coating layer.
10 . A recording media system according to claim 5 which comprises a protective coating layer, wherein said protective coating layer comprises the copolymer.
11 . A recording media system according to claim 7 which comprises a protective coating layer.
12 . A recording media system according to claim 7 which comprises a protective coating layer, wherein said protective coating layer comprises the copolymer.
13 . A recording media system according to claim 1 which further comprises ink jet ink.
14 . A recording media system according to claim 1 which further comprises one or more pigments, fillers or organic particulates selected from the group consisting of amorphous silica, crystalline silica, aluminum trihydrate, kaolin, talcum, chalk, betonite, zeolite, glass beads, calcium carbonate, potassium sodium aluminum silicate, diatomaceous earth, silicates of aluminum, silicates of magnesium, titanium doxide, polyolefins, polystyrene, polyurethane, starch, poly(methyl methacrylate) and polytetrafluoroethylene.
15 . A recording media system according to claim 1 which further comprises one or more additives selected from the group consisting of surface active agents, antistatic agents, thickeners, suspending agents, pH controlling compounds, light stabilizers, antioxidants, humectants, bacteriostats, crosslinking agents and optical brighteners.
16 . A recording media system according to claim 15 in which the additives are selected from the group consisting of phenolic antioxidants, hydroxybenzotriazole ultraviolet light absorbers, benzophenone ultraviolet light absorbers, hydroxyphenyltriazine ultraviolet light absorbers and hindered amine light stabilizers.
17 . A recording media system according to claim 1 in which said support comprises cellulose esters, cellulose acetate, polyesters, polystyrene, polyethylene, poly(vinyl acetate), polypropylene, polycarbonate, polymethacrylic acid and methyl and ethyl esters, polyamides such as nylons, polyesters such as poly(ethylene terephthalate) (PET), polyimides, polyethers, polyvinyl chloride polytetrafluoroethylene, polyvinylidene fluoride or polysulfonamides.
18 . A recording media system according to claim 1 in which said support is paper or transparent poly(ethylene) terephthalate.
19 . A recording media system according to claim 1 in which
n is between 0 and about 20 mole percent,
m is between about 65 and about 97 mole percent,
x is between about 3 and about 20 mole percent,
y is 0,
z is between 0 and about 2 mole percent and
x+z is between about 3 and about 20 mole percent.
20 . A recording media system according to claim 1 in which
n is between 0 and about 5 mole percent,
m is between about 75 and about 97 mole percent,
x is between 3 and about 20 mole percent,
y is 0,
z is between about 0 and about 2 mole percent,
x+z is between about 3 and about 20 mole percent and
R 1 and R 2 are H.
21 . An ink jet ink which comprises a copolymer according to claim 1 .
22 . A method for preparing an ink jet recording media system, which method comprises applying one or more coating layers on a support, wherein at least one of the coating layers comprises a copolymer according to claim 1.