• 专利标题:   Aqueous polyurethane coating contains component containing deionized water, graphene sol, filming aid, and thickener, and component containing propylene glycol methyl ether acetate, aqueous polyisocyanate curing agent, and defoamer.
  • 专利号:   CN110157318-A
  • 发明人:   YAN H, PAN J
  • 专利权人:   MIANYANG MAXEWELL SCI CO LTD
  • 国际专利分类:   C09D175/04, C09D007/62
  • 专利详细信息:   CN110157318-A 23 Aug 2019 C09D-175/04 201972 Pages: 9 Chinese
  • 申请详细信息:   CN110157318-A CN10543388 21 Jun 2019
  • 优先权号:   CN10543388

▎ 摘  要

NOVELTY - An aqueous polyurethane coating comprises 80-90 pts. wt. component (A) comprising 15-35 pts. wt. deionized water, 4-10 pts. wt. graphene sol, 8-12 pts. wt. filming aid, 0.5-1.5 pts. wt. dispersing agent, 2.5-5.5 pts. wt. defoamer, 0.5- 1.5 pts. wt. leveling agent, 45-55 pts. wt. aqueous polyurethane emulsion and 1-3 pts. wt. thickener, 10-20 pts. wt. component (B) comprising 30-50 pts. wt. propylene glycol methyl ether acetate, 45-65 pts. wt. aqueous polyisocyanate curing agent, 2-6 pts. wt. anti-flash rust agent, and 0.5-1.5 pts. wt. defoamer. USE - Aqueous polyurethane coating. ADVANTAGE - The coating is stable for a long time under high temperature, acidity and alkaline conditions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of aqueous polyurethane coating, which involves (1) adding a graphene sol to deionized water while stirring at 800-1000 rpm for 25-35 minutes, adding a film forming aid to the obtained product of step a while stirring at 800-1000 rpm for 15-20 minutes, adding a dispersing agent, stirring at 800-1000 rpm for 15-20 minutes, adding an antifoaming agent while stirring at 800-1000 rpm for 25-35 minutes, adding a leveling agent while stirring at 800-1000 rpm for 15-20 minutes, adding an aqueous polyurethane emulsion while stirring at 800-1000 rpm for 15-20 minutes, adding a thickener while stirring at 1000-1200 rpm for 30-40 minutes, and obtaining component (A). (2) mixing propylene glycol methyl ether acetate and aqueous polyisocyanate curing agent, stirring at 800-1000 rpm for 15-20 minutes, adding anti-flash rust agent while stirring at 800-1000 rpm for 15-20 minutes, adding an antifoaming agent while stirring at 800-1000 rpm for 30-40 minutes, and obtaining component (boron), and (3) mixing the component (A) and the component (B) uniformly.