Catalystless curable composition based on silane functional polymer

摘要

The present invention relates to at least one polymer P containing a reactive silane group; It relates to a moisture curable composition comprising at least one organosilane OS of formula (I) between 0.1 and 5% by weight based on the total composition, wherein in formula (I), R ²⁰ is independently, 1 to 12 carbons A monovalent, optionally cyclic or branched, hydrocarbyl or heterocarbyl radical containing an atom and optionally containing an aromatic moiety, wherein the carbon atom next to the silicon atom is another carbon atom via a C=C double bond Bonded to or bonded to a heteroatom selected from O, N and S; R ²¹ independently represents a linear, cyclic or branched divalent hydrocarbyl radical having 2 to 12 carbon atoms and optionally containing an aromatic moiety; R ²² represents a hydrogen atom or a group of the following formula (Ia), and the curable composition is characterized in that it does not contain a catalytically active organometal or acidic compound. The moisture curable composition is particularly suitable as an elastic adhesive, coating or sealant and exhibits excellent mechanical performance.