US 9,809,724 B2
Radiation-curable formulations with high adhesion
Axel Becker, Altrip (DE); Erich Beck, Ladenburg (DE); and Manfred Biehler, Ilbesheim (DE)
Assigned to BASF SE, Ludwigshafen (DE)
Appl. No. 14/420,071
Filed by BASF SE, Ludwigshafen (DE)
PCT Filed Aug. 1, 2013, PCT No. PCT/EP2013/066162
§ 371(c)(1), (2) Date Feb. 6, 2015,
PCT Pub. No. WO2014/023639, PCT Pub. Date Feb. 13, 2014.
Claims priority of provisional application 61/681,170, filed on Aug. 9, 2012.
Claims priority of application No. 12179892 (EP), filed on Aug. 9, 2012.
Prior Publication US 2015/0218408 A1, Aug. 6, 2015
Int. Cl. C08F 2/46 (2006.01); C08F 2/50 (2006.01); C08G 61/04 (2006.01); C09D 133/14 (2006.01); C09D 4/00 (2006.01); C08L 61/00 (2006.01); C08L 61/24 (2006.01); C09D 133/00 (2006.01); B05D 1/18 (2006.01); B05D 3/06 (2006.01); C09D 133/08 (2006.01); C09D 175/02 (2006.01); D21H 19/20 (2006.01)
CPC C09D 133/14 (2013.01) [B05D 1/18 (2013.01); B05D 3/067 (2013.01); B05D 3/068 (2013.01); C08L 61/00 (2013.01); C08L 61/24 (2013.01); C09D 4/00 (2013.01); C09D 133/00 (2013.01); C09D 133/08 (2013.01); C09D 175/02 (2013.01); D21H 19/20 (2013.01); Y10T 428/31964 (2015.04); Y10T 442/20 (2015.04)] 9 Claims
 
1. A radiation-curable formulation comprising
(A) 20 to 50 weight % of at least one condensation resin synthesized from urea or urea derivatives a1) and ketones or aldehydes a2) selected from C—H acidic aldehydes and ketones or mixtures thereof with formaldehyde,
(B) 20 to 40 weight % of at least one radiation-curable compound having at least 2 acryloyl or methacryloyl groups,
(C) 2 to 10 weight % of at least one radiation-curable compound having free acid groups,
(D) 10 to 30 weight % of at least one (meth)acrylic acid alkyl ester whose alkyl radical has at least 8 carbon atoms,
(E) 1 to 10 weight % of at least one coating auxiliary and/or additive, and
(F) 0.5 to 5 weight % at least one photoinitiator,
wherein:
amounts for components (A), (B), (C), (D), (E), and (F) sum to 100 weight %, and
the formulation has an acid number of 10 to 100 mg KOH/g, based on the sum of components (A) to (F).