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US 12,655,246 B2Granted
Xylylene diisocyanate composition, xylylene diisocyanate modified composition, polymerizable composition, resin, molded article, optical element, and lens
AssigneeMitsui Chemicals, Inc.
InventorMasaru Kawaguchi
Life of this patent
Estimating the term…
Abstract
[Solving Means] A xylylene diisocyanate composition contains a xylylene diisocyanate and a compound having retention time of 14.0 minutes to 14.6 minutes when the xylylene diisocyanate composition is measured by gas chromatography mass spectrometry under the specific measurement conditions, and a content ratio of the compound is adjusted to be 2000 ppm or less.
Claims9
A xylylene diisocyanate composition comprising:
- a xylylene diisocyanate;
- a formyl group-containing isocyanate represented by Chemical Formula 1;
- and
- a chloromethylbenzyl isocyanate, wherein
- a content ratio of the formyl group-containing isocyanate is 10 ppm or more and 2000 ppm or less, and
- a content ratio of the chloromethylbenzyl isocyanate is 3000 ppm or less,
3 more elements
Dependencies are inferred from the claim text.