Provided is a method for producing a polyurethane lens by polymerizing a composition containing a polyisocyanate compound and a specific polythiol compound having high reactivity, in which the method suffers less increase in viscosity with the lapse of time and thus is excellent in workability. The method for producing a polyurethane lens, contains polymerizing a composition containing (A) a polyisocyanate compound, (B) a polythiol compound containing a polythiol compound that is obtained through esterification reaction of a polyol compound and thioglycolic acid, (C) a polymerization catalyst, and from 0.001 to 0.5 part by mass per 100 parts by mass in total of the components (A) and (B) of (D) an acidic phosphate ester compound represented by the following general formula (1), in which the method contains a step of preparing the composition by mixing the components (A) and (D), and then adding the components (B) and (C) thereto:
wherein in the general formula (1), R1 represents an alkyl group having from 1 to 20 carbon atoms or an aryl group having from 6 to 10 carbon atoms; a represents a number of from 0 to 2; and b represents a number of 1 or 2.
本发明提供了一种通过聚合含有多
异氰酸酯化合物和具有高反应活性的特定聚
硫醇化合物的组合物来生产聚
氨酯镜片的方法,在该方法中,随着时间的推移,粘度的增加较少,因此具有良好的可操作性。生产聚
氨酯镜片的方法包括聚合含有以下成分的组合物:(A) 多
异氰酸酯化合物;(B) 含有通过多元醇化合物和
硫代
乙醇酸的酯化反应得到的聚
硫醇化合物的聚
硫醇化合物;(C) 聚合催化剂;以及 0.001 至 0.5 份(质量比)的组分(A)和(B),(D)由以下通式(1)表示的酸性
磷酸酯化合物,其中该方法包含一个步骤,即通过混合组分(A)和(D)制备组合物,然后将组分(B)和(C)加入其中:
其中,在通式(1)中,R1 代表具有 1 至 20 个碳原子的烷基或具有 6 至 10 个碳原子的芳基;a 代表 0 至 2 的数字;b 代表 1 或 2 的数字。