Coating compositions for forming a single inkjet-receptive layer on unsubbed textiles for direct inkjet printing with dye and pigment inks thereon
This invention relates to inkjet printing on textile materials, and, more particularly to a composition for coating a single, inkjet-receptive layer onto unsubbed textiles such as canvas, polyester, linen and blends thereof, which accepts inkjet printing with dye and pigment inks and which gives strong colors which are water-resistant.
1 . A coating composition for forming a single layer directly on unsubbed textiles suitable for inkjet printing with dye and pigment inks, comprising, by weight %,
(a) a crosslinked vinyl lactam polymer or copolymer, 1-30,
(b) gel or fumed silica, 1-30,
(c) a crosslinkable vinyl lactam polymer, 25-95,
(d) a crosslinker therefor, 1-20,
(e) a binder, 1-30, and
(f) water.
2 . A coating composition according to claim 1 wherein (a) is 10-20; (b) is 10-20; (c) is 50-90; (d) 5-15 and (e) 10-25.
3 . A coating composition according to claim 1 wherein (a) is 15, (b) is 15; (c) is 80; (d) is 9; and (e) is 15.
4 . A coating composition according to claim 1 wherein (a) is crosslinked polyvinylpyrrolidone (PVPP).
5 . A coating composition according to claim 1 wherein (b) is silica gel.
6 . A coating composition according to claim 5 wherein said silica gel has an average particle size of 3-16 μm.
7 . A coating composition according to claim 1 having a viscosity of 200-1000 cps (70 rpm, # 64 spindle).
8 . A coating composition according to claim 1 which is about 10 to 30% solids.
9 . A coating composition according to claim 1 which has a pH of about 8-10.
10 . A coating composition according to claim 1 which includes clay or a surfactant.