Primer composition for preparing composites by adhering them without heating

摘要

A composition for cold preparation of polyester resin based stratified composite material to give a surface suitable for gluing with mono- or bi-component polyurethane glue without preliminary sanding or roughening. The composition comprises at least one aprotic polar solvent (TPA), at least one ether (TE) which is an ether, ether-ester or ether-ketone with a molar volume below 200 and preferably below 160 and a molecule devoid of a hydroxyl functional group and at least one activator (TA) bearing at least one -NH2 or -NH- group and of molar volume below 100.