US 11,850,835 B2
Production of composite materials made of film, solid adhesive polymer, and a polyurethane layer
Paul Andrew Simpson, Ludwigshafen (DE); Detlef Pfeifer, Ludwigshafen (DE); and Yves Stiwitz, Ludwigshafen (DE)
Assigned to BASF COATINGS GMBH, Muenster (DE)
Appl. No. 16/640,400
Filed by BASF Coatings GmbH, Muenster (DE)
PCT Filed Aug. 14, 2018, PCT No. PCT/EP2018/071991
§ 371(c)(1), (2) Date Feb. 20, 2020,
PCT Pub. No. WO2019/038129, PCT Pub. Date Feb. 28, 2019.
Claims priority of application No. 17187656 (EP), filed on Aug. 24, 2017.
Prior Publication US 2020/0353738 A1, Nov. 12, 2020
Int. Cl. B32B 37/12 (2006.01); B29C 65/48 (2006.01); B29C 65/00 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 27/06 (2006.01); B32B 27/34 (2006.01); B32B 27/40 (2006.01); B32B 37/18 (2006.01); C08J 5/18 (2006.01); B29K 75/00 (2006.01); B29L 9/00 (2006.01)
CPC B32B 37/12 (2013.01) [B29C 65/486 (2013.01); B29C 65/4815 (2013.01); B29C 66/1122 (2013.01); B29C 66/45 (2013.01); B29C 66/712 (2013.01); B29C 66/73921 (2013.01); B32B 3/266 (2013.01); B32B 7/12 (2013.01); B32B 27/065 (2013.01); B32B 27/34 (2013.01); B32B 27/40 (2013.01); B32B 37/185 (2013.01); C08J 5/18 (2013.01); B29K 2075/00 (2013.01); B29K 2883/00 (2013.01); B29L 2009/00 (2013.01); B32B 2250/24 (2013.01); B32B 2307/718 (2013.01); C08J 2375/04 (2013.01); C08J 2377/00 (2013.01)] 13 Claims
 
1. A process for preparation of multilayered composite materials comprising:
(A) a film made of polyurethane or polyamide,
(B) a tie layer made of thermoplastic adhesive polymer with a melting range from 70° C. to 130° C., and
(C) a polyurethane layer,
wherein the process comprises:
a) forming the polyurethane layer (C) using a mold,
b) applying the adhesive polymer in solid form to the film (A) and/or to the polyurethane layer (C), and
c) combining the polyurethane layer (C) with the film (A).