Polyester Polyols Based on Phthalic Anhydride for Polyurethane Adhesives
Ortho-phthalates are a unique class of amorphous polyester polyols that are derived from the reaction of various glycols with phthalic anhydride or its derivatives．They have been confirmed to have improved hydrolytic resistance over other types of polyester polyols．End use products containing orth0.Phthalates were also shown to exhibit improved hydrolysis than using other types of polyesters．Their utility in flexible package and polyurethane hot melt adhesives were explored．It Was demonstrated that they Can be used in flexible package adhesives for both the prepolymer side and the coreactant side．They imparted adhesives with excellent adhesion on a broad range of substrates and improved adhesion at elevated temperature and retort condition．These polyesters allow a formulator broad processing versatility in PUR hot melt adhesive applications．Several typical properties that these esters Can be used to modify are open time，green strength and viscosity．
Keywords：Ortho-phthalate Phthalic Anhydride Polyester Polyol Polyurethane Adhesives Reactive Hot Melt Adhesives Flexible Packing Adhesives Hydrolytic Stabilit
Mingzhe(Michael)Wang Michael E.O’Brien D.Kip Hillshafer Paul Neill Jim Full
Stepan Company,22 W Frontage Road,Northfield,IL 60093 USA
国内会议
上海
英文
82-94
2008-05-29（万方平台首次上网日期，不代表论文的发表时间）