Patent ID: 6136445
Filing Date: 2000-10-24
Classification: C08J,C09D,Y10T

Abstract:
A lacquer coated polymer sheet comprising an at least partially thermoplastic backing sheet coated with an elastic-plastic lacquer, the lacquer being formed from a lacquer mixture comprising ingredients 1-5; wherein,ingredient 1 is 0.1 to 10% by weight of lamellar aluminum or mica pigment, or a mixture thereof,ingredient 2 is 0 to 15% by weight of coloring pigment,ingredient 3 is 0 to 15% by weight of organic solvent,ingredient 4 is 50 to 76.9% by weight of water, andingredient 5 is 18 to 45% by weight of a binder vehicle formed of components A-D;component A is 10 to 70% by weight of an elastic polyurethane resin,component B is 5 to 40% by weight of a melamine resin,component C is 0 to 60% by weight of a further binder resin, andcomponent D is 0 to 6% by weight thickener;the weight percentages of ingredients 1-5 are relative to the total weight of the lacquer mixture,and the weight percentages of components A-D are relative to the total weight of the binder vehicle in the lacquer mixture; and,the ratio of the total wt. % of the elastic binder resins of components A and C to the total wt. % of the melamine binder resin of component B is adjusted so that a cupping test at room temperature of the lacquer coating polymer sheet according to DIN-ISO 1520 provides a 20 to 50% elastic deformation and 80 to 45% plastic deformation.