| abstract |
The polymerizable composition for an optical material of the present invention comprises a polyisocyanate (A), a polythiol (B), an acidic phosphate ester (C) represented by the following formula (1) (D), wherein the total molar amount of isocyanate groups in the polyisocyanate (A) is 100 mol%, the content of secondary isocyanate groups in the polyisocyanate (A) is 20 mol% or more, The acidic phosphate ester (C) is contained in an amount of 100 to 700 ppm based on the total weight of the polyisocyanate (A) and the polythiol (B). |