abstract |
Low hardness and scratch resistance in direct-cast diethylene glycol bis(allyl carbonate) (CR-39 TM plastic surface laminae in glass-plastic lenses are analyzed and new plastic formulations, preferably comprising the monomer catalyzed with a mixed isopropyl percarbonate-benzoyl peroxide polymerization catalyst, are disclosed, offering improved hardness and scratch resistance for laminated lenses and also for CR-39 TM plastic articles generally. |