US 11,914,293 B2
Radiatioin-curable mixture containing low-functionalised, partially saponified polyvinyl acetate
Christian Pietsch, Offenburg (DE); Armin Becker, Großniedesheim (DE); Uwe Krauss, Gossersweiler-Stein (DE); and Thomas Telser, Heidelberg-Wieblingen (DE)
Assigned to Flint Group Germany GmbH, Stuttgart (DE)
Appl. No. 16/482,041
Filed by Flint Group Germany GmbH, Stuttgart (DE)
PCT Filed Jan. 26, 2018, PCT No. PCT/EP2018/051949
§ 371(c)(1), (2) Date Jul. 30, 2019,
PCT Pub. No. WO2018/141644, PCT Pub. Date Aug. 9, 2018.
Claims priority of application No. 17153935 (EP), filed on Jan. 31, 2017.
Prior Publication US 2019/0391492 A1, Dec. 26, 2019
Int. Cl. G03F 7/038 (2006.01); C08L 31/04 (2006.01); C08L 71/08 (2006.01); C08L 75/04 (2006.01); C08L 79/02 (2006.01); G03F 7/11 (2006.01); G03F 7/20 (2006.01)
CPC G03F 7/0388 (2013.01) [C08L 31/04 (2013.01); C08L 71/08 (2013.01); C08L 75/04 (2013.01); C08L 79/02 (2013.01); G03F 7/11 (2013.01); G03F 7/202 (2013.01)] 19 Claims
 
1. A radiation-curable mixture for generating relief structures, comprising
a) an ethylenically unsaturated compound as component A, said compound being a functionalized, part-hydrolyzed polyvinyl acetate comprising (i) vinyl alcohol units, (ii) vinyl acetate units, and (iii) vinyl acrylate units, where the vinyl acrylate units, which can be substituted, have the general structure

OG Complex Work Unit Chemistry
wherein the amount of vinyl acrylate units (iii) in the functionalized, part-hydrolyzed polyvinyl acetate a), based on all the units (i), (ii), and (iii), is 0.1 to <3 mol %, where R is hydrogen or a linear or branched aliphatic or heteroaliphatic radical, or a cycloaliphatic, heterocyclic or aromatic radical having up to 12 carbon atoms;
b) an initiator or initiator system as component B,
c) an ethylenically unsaturated compound different from component A, as component C,
d) an additive capable of hydrogen bonding, as component D,
said additive being present in an amount of 1 to 30 wt %, based on the sum of all components in the radiation-curable mixture;
wherein the additive capable of hydrogen bonding is selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, polyethyleneimine, polyurethanes, polyethylene glycol, and polyvinyl alcohol/polyethylene glycol graft copolymer.