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US 2024/0294695 A1Published application
Polyisocyanate composition, polymerizable composition, resin, molded article, optical element, and lens
AssigneeMitsui Chemicals, Inc.
InventorsMasayuki TAKAGUCHI, Masaru KAWAGUCHI
Life of this patent
Estimating the term…
Abstract
The polyisocyanate composition contains a polyisocyanate having an isocyanatomethyl group, and a 1-nylon type polymer. The ratio of the mass of the amide bond in the polyisocyanate composition with respect to the mass of the isocyanate group in the polyisocyanate composition is 8000 ppm or less.
Claims18
A polyisocyanate composition, comprising:
- a polyisocyanate having an isocyanatomethyl group;
- and
- a 1-nylon type polymer,
- wherein a ratio of a mass of an amide bond in the polyisocyanate composition with respect to a mass of an isocyanate group in the polyisocyanate composition is 8000 ppm or less.
1 more element
A polyisocyanate composition, comprising:
- a polyisocyanate having an isocyanatomethyl group;
- and
- a specific compound having an absorption peak with a peak top in a range of 1700 cm−1 or more and 1710 cm−1 or less in an infrared absorption spectrum,
- wherein, with respect to a mass of an isocyanate group in the polyisocyanate composition, a ratio of a mass of an amide bond in the polyisocyanate composition, the mass of the amide bond being calculated from an absorbance at the peak top of the absorption peak, is 8000 ppm or less.
1 more element
Dependencies are inferred from the claim text.