Patent ID: 9415572
Filing Date: 2016-08-16
CPC Classification: B32B,C08G,Y10T

Claim Text:
1. A composite element comprising (a) a thermoplastic selected from the group consisting of acrylonitrile-butadiene-styrene (ABS), polymethyl methacrylate (PMMA), acrylonitrile-styrene acrylate (ASA), styrene-acrylonitrile (SAN), polycarbonate (PC), thermoplastic polyurethane (TPU), polyvinylchloride (PVC), thermoplastic polyolefins (TPO), styrene-maleic anhydride copolymer (SMA), and blends thereof with, adhering thereto, (b) a polyisocyanate polyaddition product formed from a reaction mixture comprising (i) one or more aromatic isocyanates selected from the group consisting of diphenylmethane diisocyanate (MDI), tolylene diisocyanate (TDI), MDI and TDI in modified form, and in the form of isocyanate prepolymers comprising urethane groups and isocyanate groups, (ii) one or more polyester polyols with functionality of from 2.5 to 3.5 and a hydroxy number of from 40 to 400 mg KOH/g based on the condensation of succinic acid with a diol with molar mass of from 62 to 200 g/mol and a triol with molar mass of from 62 to 200 g/mol, wherein the quantitative proportions of the polyester polyols are from 0.5 to 5% by weight based on the entirety of components (i) to (vii), (iii) one or more polyether polyols, and (iv) optionally a chain extender and/or a crosslinking agent, in the presence of (v) optionally a catalyst, (vi) a blowing agent and (vii) optionally an auxiliaries and/or an additive.