US 11,772,341 B2
Dyeable 1.74 resin lens and preparation method thereof
Chuanbao Wang, Nantong (CN); Xinbiao Liu, Nantong (CN); Qiu Du, Nantong (CN); Yulei Bao, Nantong (CN); Yuan Lu, Nantong (CN); Qingbo Yan, Nantong (CN); and Jian Huang, Nantong (CN)
Assigned to Jiangsu Conant Optical Co., Ltd., Nantong (CN); and Shanghai Conant Optical Co., Ltd., Shanghai (CN)
Filed by Jiangsu Conant Optical Co., Ltd., Nantong (CN); and Shanghai Conant Optical Co., Ltd., Shanghai (CN)
Filed on May 31, 2021, as Appl. No. 17/334,955.
Claims priority of application No. 202110356100.8 (CN), filed on Apr. 1, 2021.
Prior Publication US 2022/0317336 A1, Oct. 6, 2022
Int. Cl. B29D 11/00 (2006.01); C08G 75/14 (2006.01); C08K 5/3475 (2006.01); G02B 1/04 (2006.01); B29K 81/00 (2006.01); B29K 105/00 (2006.01)
CPC B29D 11/0048 (2013.01) [B29D 11/00442 (2013.01); C08G 75/14 (2013.01); C08K 5/3475 (2013.01); G02B 1/041 (2013.01); B29K 2081/04 (2013.01); B29K 2105/0002 (2013.01); B29K 2995/002 (2013.01)] 6 Claims
 
1. A preparation method of a dyeable 1.74-resin lens comprising the following steps:
(1) preparing a module layer resin lens with a refractive index being 1.74;
wherein the module layer with the refractive index being 1.74 is created by the following ingredients:
100 weight parts of a resin monomer A material, 10 weight parts of a resin monomer B material, 0.06-0.11 weight part of an initiator, 0.2-0.3 weight part of an ultraviolet absorber, 0.002 weight part of a blue color agent and 0.014 weight part of a red color agent, wherein the resin monomer A material is bis(2,3-epithiopropyl)disulfide, and the resin monomer B material is bis(mercaptomethyl)-3,6,9-trithiaundecan-1,11-dithiol;
(2) soaking the prepared module layer in a NaOH solution for surface treatment, and then performing cleaning and drying;
wherein the prepared module layer is soaked in the NaOH solution for 10-12 min at a temperature of 65-75° C. while an ultrasonic wave intensity at 5-15 w/cm2 is performed, the ratio of the prepared module layer to the NaOH solution is 1.15-1.25 to 1 by weight;
(3) using the treated module layer as a lower mold and a glass mold as an upper mold to perform mold closing; and
(4) injecting raw materials of the dyeable layer with the refractive index being 1.60 into the mold subjected to mold closing, and then performing curing to obtain the dyeable resin lens.