US 11,866,648 B2
Process for producing polymerizable composition for optical materials
Yuuki Kasori, Omuta (JP); and Nobuo Kawato, Kurume (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 17/426,755
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Jan. 29, 2020, PCT No. PCT/JP2020/003203
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/158813, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-013922 (JP), filed on Jan. 30, 2019.
Prior Publication US 2022/0098473 A1, Mar. 31, 2022
Int. Cl. G02B 1/04 (2006.01); C08G 18/24 (2006.01); C09K 9/02 (2006.01); C08G 18/38 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/75 (2006.01); C08K 5/1545 (2006.01); C08K 5/521 (2006.01)
CPC C09K 9/02 (2013.01) [C08G 18/242 (2013.01); C08G 18/3876 (2013.01); C08G 18/4825 (2013.01); C08G 18/6666 (2013.01); C08G 18/758 (2013.01); C08K 5/1545 (2013.01); C08K 5/521 (2013.01); C09K 2211/1018 (2013.01); G02B 1/041 (2013.01)] 13 Claims
 
1. A process for producing a polymerizable composition for optical materials, comprising:
a step A of mixing together an alicyclic polyisocyanate compound (i), a polymer (ii) represented by General Formula (ii), a photochromic compound (iii), and an internal release agent (iv);
a step B of mixing a mixed solution obtained by the step A with a polythiol compound (v); and
a step C of further mixing a mixed solution obtained by the step B with a polymerization catalyst (vi) so as to obtain a polymerizable composition for optical materials,
wherein in the step A, the internal release agent (iv) is added so that a content of the internal release agent (iv) in the polymerizable composition for optical materials is 500 to 1,000 ppm, and
in the step C, the polymerization catalyst (vi) is added so that a content of the polymerization catalyst (vi) in the polymerizable composition for optical materials is 120 to 400 ppm,
R1private use character BrketopenstA1—R2—A2—R3]n(ii)
wherein, in General Formula (ii), A1 and A2 represent different polymer chains, R1 is an n-valent organic group, R2 is a linking group that links two kinds of polymer chains, R3 is an organic group, and n is an integer of 1 to 6.