Patent ID: 7771827

Claim:
A composition comprising: (a) at least one polar aprotic solvent (TPA) (b) an ether (TE), comprising an ether, an ether-ester, or an ether-ketone, or combination thereof having: a molar volume less than 200 cm 3 /mole, a molecule devoid of a hydroxyl function (c) at least one activator (TA) comprising at least one reactive —NH 2 and/or —NH— nitrogenous function, of molar volume less than 100 cm 3 /mole, wherein (a), (b), and (c) are present in proportions effective for cold preparation of laminated composite materials based on polyester resins to confer to them without preliminary sanding or abrasion a surface state suitable for adhesive bonding with a polyurethane adhesive.