US 11,780,214 B2
Three-layer UV protective film for decorative laminated sheets (HPL)
Markus Parusel, Messel (DE); Michael Enders, Dieburg (DE); Claude Guenanten, Darmstadt (DE); and Michael Golder, Belfort (FR)
Assigned to Roehm GmbH, Darmstadt (DE)
Appl. No. 15/313,987
Filed by Markus Parusel, Messel (DE); Michael Enders, Dieburg (DE); Claude Guenanten, Darmstadt (DE); and Michael Golder, Belfort (FR)
PCT Filed May 19, 2015, PCT No. PCT/EP2015/060929
§ 371(c)(1), (2) Date Nov. 25, 2016,
PCT Pub. No. WO2015/180995, PCT Pub. Date Dec. 3, 2015.
Claims priority of application No. 10 2014 210 007.0 (DE), filed on May 26, 2014.
Prior Publication US 2017/0197391 A1, Jul. 13, 2017
Int. Cl. B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/10 (2006.01); B32B 27/08 (2006.01); B32B 21/08 (2006.01); B32B 37/10 (2006.01)
CPC B32B 27/10 (2013.01) [B32B 21/08 (2013.01); B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/30 (2013.01); B32B 27/304 (2013.01); B32B 27/308 (2013.01); B32B 37/10 (2013.01); B32B 2307/558 (2013.01); B32B 2307/71 (2013.01); B32B 2309/02 (2013.01); B32B 2309/04 (2013.01); B32B 2309/12 (2013.01); B32B 2317/125 (2013.01); B32B 2333/12 (2013.01)] 13 Claims
 
1. A UV-protective film suitable for lamination on high-pressure laminates (HIPLs), comprising, from the outside to the inside, the following layers bonded to one another:
a layer A comprising a fluoropolymer,
a PMMA layer B comprising a matrix material B comprising at least one impact modifier and at least one UV stabilizer and/or UV absorber, and
a layer C comprising 5 to 35% by weight of at least one adhesion promoter and a matrix material C comprising at least one poly(meth)acrylate, at least one impact modifier and optionally, at least one UV stabilizer and/or UV absorber,
wherein
the PMMA matrix material in layer B and the poly(meth)acrylate in layer C are respectively a polymer obtained through polymerization of a composition composed of from 80 to 100% by weight of methyl methacrylate and from 0 to 20% by weight of one or more other ethylenically unsaturated monomers capable of free radical polymerization,
a molar mass of the PMMA in layer B is from 100,000 to 200,000 g/mol,
the at least one impact modifier in the layers B and C are core-shell or core-shell-shell particles having an outermost shell wherein the outermost shell of said particles completely mixes with the PMMA matrix material in layer B and the poly(meth)actylate in layer C, respectively, and
the at least one adhesion promoter is a copolymer comprising at least one (meth)acrylate and one anhydride and/or diacid, and
the layer C is suitable for lamination with a resin-impregnated paper to obtain an HPL.