Plastic components of improved hardness and scratch resistance
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United States of America Patent
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Jan 19, 1982
Grant Date -
N/A
app pub date -
Oct 24, 1980
filing date -
Oct 24, 1980
priority date (Note) -
Expired
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Abstract
Low hardness and scratch resistance in direct-cast diethylene glycol bis(allyl carbonate) (CR-39.RTM. 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.RTM. plastic articles generally.
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