to solvent abrasion treatment as in example ii the samples show 13 6 and 8 9 percent haze a polyurethane film as described in example i is soaked in a solution of 5 percent benzophenone in mek for 45 minutes at room temperature the film is dried and laminated as in example iii and exposed to ultraviolet light for 15 minutes following the solvent abrasion treatment as in the previous examples the sample shows only 3 5 percent haze a sample is prepared as in example iv except that the mek soak solution contains 2 5 percent benzophenone and the laminate is exposed to ultraviolet radiation for 60 minutes after solvent abrasion as in the previous examples the sample shows 4 8 percent haze a polyurethane film is soaked in a solution which contains 2 5 percent benzophenone and 2 5 percent triethylamine in mek the film is dried and laminated and exposed to ultraviolet radiation for 15 minutes following the solvent abrasion treatment as in the previous examples the sample has 4 4 percent haze a polyurethane film is soaked in a solution which contains 2 5 percent benzophenone in a solvent which comprises 10 percent dimethyl formamide dmf and 90 percent mek the film is dried laminated and exposed to ultraviolet for 15 minutes after solvent abrasion as in the previous examples the sample has 3.