Xylylenediisocyanate composition and optical polymerizable composition comprising same
AssigneeSK Pucore Co., Ltd.
InventorsJae Young PAI, Jung Hwan MYUNG, Kyeong Hwan YOU, Hyuk Hee HAN, Jeong Moo KIM, Eui Jun CHOI, Jung Hwan SHIN
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Abstract
A xylylene diisocyanate (XDI) composition according to exemplary embodiments includes xylylene diisocyanate and an acidity regulator having a boiling point of 110° C. or higher, and the composition has an acidity of greater than 100 ppm and 1,000 ppm or less based on a total weight of the xylylene diisocyanate (XDI). An optical lens having a high transmittance and improved optical uniformity can be manufactured by controlling a polymerization reaction rate through acidity adjustment.
Claims15
A xylylene diisocyanate composition, comprising:
- xylylene diisocyanate (XDI);
- and an acidity regulator having a boiling point of 110° C. or higher,
- wherein the xylylene diisocyanate composition has an acidity of greater than 100 ppm and 1,000 ppm or less based on a total weight of the xylylene diisocyanate (XDI).
A polymerizable composition for an optical material, comprising:
- a xylylene diisocyanate composition which includes xylylene diisocyanate (XDI) and an acidity regulator having a boiling point of 110° C. or higher, and has an acidity of greater than 100 ppm and 1,000 ppm or less based on a total weight of the xylylene diisocyanate (XDI);
- a polythiol-based compounds;
- and
- an additive.
A method for preparation of a xylylene diisocyanate composition, the method comprising:
- synthesizing xylylene diisocyanate from xylenediamine to form a preliminary composition including xylylene diisocyanate;
- and
- adjusting an acidity of the preliminary composition to a range of greater than 100 ppm to 1,000 ppm.
Dependencies are inferred from the claim text.