US 12,460,087 B2
Ultraviolet curing coating composition and use thereof
Yan Wu, Shanghai (CN); and Jianbin Yu, Shanghai (CN)
Assigned to Phichem Corporation, Shanghai (CN)
Appl. No. 18/027,445
Filed by Phichem Corporation, Shanghai (CN)
PCT Filed Sep. 22, 2021, PCT No. PCT/CN2021/119669
§ 371(c)(1), (2) Date Mar. 21, 2023,
PCT Pub. No. WO2022/063135, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 202011010489.2 (CN), filed on Sep. 23, 2020.
Prior Publication US 2023/0331992 A1, Oct. 19, 2023
Int. Cl. C09D 4/06 (2006.01); C09D 7/43 (2018.01); C09D 7/63 (2018.01)
CPC C09D 4/06 (2013.01) [C09D 7/43 (2018.01); C09D 7/63 (2018.01)] 10 Claims
 
1. An ultraviolet curing coating composition, wherein the composition comprises the following components: unsaturated carboxylic acid and unsaturated carboxylate, carbonyl-containing compound, thickener, photoinitiator, and deionized water;
wherein an increase in fiber attenuation coefficient of the composition is less than 0.02 dB/km as calculated by a difference in fiber attenuation coefficients of an optical fiber having the coating composition without the coating composition;
wherein a water absorption magnification of the composition is from 3 to 15;
wherein the photoinitiator comprises an alkyl phenone photoinitiator and a second photoinitiator selected from the group consisting of acylphosphine oxide photoinitiator, benzophenone photoinitiator, benzil photoinitiator and thioxanthone photoinitiator; and
wherein the alkyl phenone photoinitiator comprises from 30 wt. % to 70 wt. % of the photoinitiator.
 
6. An ultraviolet curing coating composition, wherein the composition comprises the following components: unsaturated carboxylic acid and unsaturated carboxylate, carbonyl-containing compound, thickener, photoinitiator, and deionized water;
wherein an increase in fiber attenuation coefficient of the composition is less than 0.02 dB/km as calculated by a difference in fiber attenuation coefficients of an optical fiber having the coating composition without the coating composition;
wherein a water absorption magnification of the composition is from 3 to 15;
wherein the photoinitiator comprises an alkyl phenone photoinitiator and at least two additional photoinitiators is selected from the group consisting of acylphosphine oxide photoinitiator, benzophenone photoinitiator, benzil photoinitiator and thioxanthone photoinitiator; and
wherein the alkyl phenone photoinitiator comprises from 30 wt. % to 70 wt. % of the photoinitiator.