Water-dispersed hydroxyl polyurethane and water-thinned two-component polyurethane paint composed thereby

Application Number: 00116990
Application Date: 2000.07.04
Publication Number: 1278539
Publication Date: 2001.01.03
Priority Information:
International: C08L75/04;C09D175/04
Applicant(s) Name: Gurun High Molecular Technology Co., Ltd., Shanghai
Inventor(s) Name: Wei Yuchun;Gao Wenxian
Patent Agency Code: 31208
Patent Agent: dong mei
Abstract The present invention relates to a composition of hydroxypolyurethane water dispersion, and its preparation process and water two-component polyurethane coating material formed from it. Said hydroxypolyurethane water dispersion is made up by using high-branched hydroxyl capped polyurethane, non-ionic surfactant, deionized water and pH valve regulating agent through a certain preparation process, the pH value of said water dispersion is 7-8. The key of said technological process is the preparation of high-branched hydroxyl capped polyurethane, and the coating film of said water two-component polyurethane coating material formed from said water dispersion can be solidified at normal temp, and possesses excellent water-proofing property, resistance to solvent, acid-resistance, alkali-resistance, abrasion performance, high lustre and high hardness.