公开(公告)号：US20220306835A1

公开(公告)日：2022-09-29

申请号：US17637147

申请日：2020-08-20

Applicant: Hanwha Solutions Corporation

Inventor： Yujin SIM ,  Juyoung PARK ,  Byeong Hyeon LEE ,  Sanghyun CHO

IPC: C08K5/13 ,  C08G18/76 ,  C08G18/32 ,  C08G18/08

Abstract: There is provided a method for preparing a polyisocyanate composition capable of improving transparency of a product, by mixing a phenol-based stabilizer in an amount of 1 to 1000 ppmw, based on the total weight of aromatic diisocynate, and then, introducing polyhydric alcohol to conduct a polymerization reaction, thereby inhibiting coloration and whitening due to oxygen or moisture during synthesis and purification processes.

公开(公告)号：US20250019484A1

公开(公告)日：2025-01-16

申请号：US18713344

申请日：2022-11-30

Applicant: HANWHA SOLUTIONS CORPORATION

Inventor： Eun Ji WOO ,  Juyoung PARK ,  Yujin SIM ,  Jongseong PARK

IPC: C08G18/38 ,  C08G18/02 ,  C08G18/09 ,  G02B1/04

Abstract: The present disclosure relates to an isocyanate composition that can suppress the occurrence of discoloration and white turbidity and improve transparency when applied to a product, and a preparation method of the same.