Silyl terminated prepolymers, method for making them and adhesive compositions made therefrom

    公开(公告)号:US09920199B2

    公开(公告)日:2018-03-20

    申请号:US14835761

    申请日:2015-08-26

    CPC classification number: C08L75/08 C08G18/10 C08G18/2865 C08G18/289

    Abstract: An improved silane modified polymer useful in adhesive compositions is made from a silane precursor material made by a process comprising reacting an organic compound having a backbone that is terminated by an amino group having at least one active amino hydrogen and a hydrolysable silane, wherein the backbone is comprised of at least one secondary amino group having one active amino hydrogen and a Michael addition acceptor compound, wherein the Michael addition compound fails to have a group reactive with an isocyanate group to form the silane precursor compound. The silane precursor compound is reacted with an isocyanate terminated polyurethane prepolymer to form a silane modified prepolymer. The silane modified prepolymer may then be cured with moisture and may be employed in an adhesive composition containing other components such as a plasticizer, catalyst and filler.

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