METHOD OF DETERMINING MANUFACTURING CONDITION OF EYEGLASS LENS AND METHOD OF MANUFACTURING EYEGLASS LENS
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United States of America Patent
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Issued Date -
Jun 6, 2013
app pub date -
Oct 26, 2012
filing date -
Oct 28, 2011
priority date (Note) -
Abandoned
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Abstract
An aspect of the present invention relates to a method of determining a manufacturing condition of a polythiourethane eyeglass lens obtained via a process of obtaining polythiourethane by polymerization reaction of an iso(thio)cyanate compound and a thiol compound, comprising determining a candidate composition for a starting material mixture and a candidate polymerization reaction condition employed in the polymerization reaction in actual manufacturing; polymerizing the starting material mixture of the candidate composition that has been determined under the candidate polymerization reaction condition to obtain a test sample; testing the obtained test sample by irradiation with a xenon lamp to determine whether or not change into red-like color is present following irradiation with the xenon lamp; and determining a starting material mixture composition and a polymerization reaction condition to be employed in the polymerization reaction in actual manufacturing with the use of a result of the determination as an indicator.
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