公开(公告)号：US20170174815A1

公开(公告)日：2017-06-22

申请号：US15127563

申请日：2015-05-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Yongshang Lu ,  Jon P. Nietfeld ,  Susan M. Endle ,  Richard G. Hansen ,  Suresh Iyer

IPC: C08G18/08 ,  C08G18/48 ,  C08G18/32 ,  C08G18/66 ,  C08G18/24 ,  C08G18/38 ,  C08G18/12 ,  C08G18/75 ,  C08G18/42

CPC classification number: C08G18/0866 ,  C08G18/0823 ,  C08G18/12 ,  C08G18/242 ,  C08G18/246 ,  C08G18/289 ,  C08G18/3206 ,  C08G18/3212 ,  C08G18/3228 ,  C08G18/3231 ,  C08G18/3234 ,  C08G18/3834 ,  C08G18/3893 ,  C08G18/4244 ,  C08G18/4825 ,  C08G18/6685 ,  C08G18/74 ,  C08G18/755 ,  C08G18/758

Abstract: A method of making a silyl-terminated polyurethane in an aqueous dispersion aqueous silyl-terminated polyurethane dispersions are described. In one embodiment, the polyurethane comprises a) urethane moieties derived from the reaction of a (i) a diol; (ii) a neutralized anionic water solubilizing compound; and iii) a diisocyanate. The polyurethane also comprises b) silyl terminal groups derived from an alkoxy silane compound having the formula (R3O)3SiR4—Z, wherein R3 is independently hydrogen or a C1-C4 alkyl; R4 is a divalent group selected from alkylene, alkylarylene, oxyalkylene; and Z is selected from the group consisting of —OH, —SH, —NR, —NH2, wherein R is an aromatic or aliphatic cyclic group. The polyurethane also comprises c) urea moieties derived from the reaction of an isocyanate terminated prepolymer and a difunctional hydrazine or hydrazide compound.