Primer

Abstract

New primers for the improvement of the adhesion of cross-linking adhesive systems to polyolefinic thermoplastic materials such as e.g. polypropylene, polyethylene or EPDM are disclosed. Said primers, on the one hand are characterized by a simple method of production and good storage stability, on the other hand by good wetting and good homogeneous film forming characteristics, said film forming characteristics enabling a uniform thickness of the layer, leading to good adhesion qualities. Essential constituent of such primers are prepolymers based on hydrated polyisoprene diol.

Dependencies are inferred from the claim text.