Patent · US Active

Preparation method of self-thixotropic polyurethane curing agent, self-thixotropic polyurethane curing agent and application thereof

US12187838B2 · kind B2 · utility

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3Claims

0Family size

Assignee

SHENZHEN FEIYANG PROTECH CORP., LTD · CN

Inventors

Poli ZHAO · Longbeilingcun, CN
Shankai Luo · Longbeilingcun, CN
Jun Xue · San Jose, US
Xiaoyong Qiu · Longbeilingcun, CN
Wenfeng Bai · Longbeilingcun, CN
Yingqi Tang · Longbeilingcun, CN

Key dates

Filing date	Dec 28, 2023
Grant date	Jan 7, 2025
Priority date	—
Expiry date	Dec 28, 2043

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/8029
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A preparation method for a self-thixotropic polyurethane curing agent includes the following steps: mixing an isocyanate and a crystalline polyester diol and/or polyether diol, reacting at a temperature between 70° C.-110° C., after a reaction, cooling to room temperature and standing still for more than 12 h to obtain the self-thixotropic polyurethane curing agent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.