| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent a coating film of a water-based paint applied to a polyurethane sealing material from discoloration with the lapse of time or pollution. <P>SOLUTION: The polyurethane sealing material includes: a base agent containing a urethane prepolymer; a curing agent having one or more active hydrogen groups in one molecule; and a terminus hydroxy group-blocked compound of polyalkylene glycol obtained by addition polymerization of ethylene oxide and propylene oxide as a plasticizer. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
