High refractive index copolymers with reduced tack are disclosed.

Preferably the adhesive (44) is an aggressive, high-tack adhesive; and is resilient.

The film (90) is capable of showing minimal or no tack under normal handling conditions, but when pressed against a target surface, exhibits the desired adhesion.

An adhesive composition is described which has improved initial tack, long-term adhesion, water uptake and translucency characteristics and may be prepared by melt extrusion.

Self supporting prepreg with tack for use in automatic process for laying up prepreg to form three dimensional parts is provided herein.