Title:
METHOD FOR PREPARING SALT-SPRAY-RESISTANT POLYASPARTATE, SALT-SPRAY-RESISTANT POLYASPARTATE, AND COATING
Document Type and Number:
WIPO Patent Application WO/2023/202240
Kind Code:
A1
Abstract:
A method for preparing a salt-spray-resistant polyaspartate, salt-spray-resistant polyaspartate, and a coating. The method for preparing a salt-spray-resistant polyaspartate comprises the following steps: mixing polyaspartate, a cardanol resin and a catalyst together for transesterification reaction, controlling the temperature to be 100 to 130 °C, controlling the relative vacuum to be -0.095 to -0.1 MPa, and stirring to react for 2 to 5 hours to obtain the salt-spray-resistant polyaspartate, wherein the molar ratio of the polyaspartate to the cardanol resin to the catalyst is polyaspartate:cardanol resin:catalyst = 1:(0.1-0.3):(0.001-0.003), and the catalyst is tetraisopropyl titanate or dibutyltin oxide. The prepared polyaspartate features excellent water resistance and salt spray resistance, low viscosity, and prolonged operable time during construction.
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Inventors:
LV WENZHANG (CN)
LUO SHANKAI (CN)
ZHAO POLI (CN)
CAI SHUISHENG (CN)
QIU XIAOYONG (CN)
ZHU LONGHUI (CN)
HE FEIYUN (CN)
LUO SHANKAI (CN)
ZHAO POLI (CN)
CAI SHUISHENG (CN)
QIU XIAOYONG (CN)
ZHU LONGHUI (CN)
HE FEIYUN (CN)
Application Number:
PCT/CN2023/079616
Publication Date:
October 26, 2023
Filing Date:
March 03, 2023
Export Citation:
Assignee:
SHENZHEN FEIYANG PROTECH CORP LTD (CN)
International Classes:
C08G73/00
Foreign References:
| CN114716671A | 2022-07-08 | |||
| CN112625236A | 2021-04-09 | |||
| CN111793420A | 2020-10-20 | |||
| CN110527414A | 2019-12-03 | |||
| US20200239702A1 | 2020-07-30 | |||
| US20210032407A1 | 2021-02-04 |
Attorney, Agent or Firm:
BEIJING WEIZHENG PATENT AGENCY CO., LTD. (CN)
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