POLYMER CONTAINING SILANE GROUPS

摘要

The invention relates to low-viscosity polymers containing silane groups, said polymers curing rapidly under the effect of moisture to form an elastic material with good heat resistance and being in particular suitable for elastic adhesives and sealants. The polymers containing silane groups are based on special hydroxysilanes which carry a secondary OH group. They are in particular obtained by reacting aminosilanes with specially substituted lactones.

主权项

1. Polymer with end groups of formula (I), which is free of isocyanate groups, where R1 stands for an alkyl group having 1 to 12 C atoms; R2 stands for a hydrogen atom or for an alkyl group having 1 to 12 C atoms, which optionally comprises ether oxygen or amine nitrogen; R3 stands for a linear or a branched alkylene or cycloalkylene residue having 1 to 12 C atoms, optionally with aromatic parts, and optionally with one or more heteroatoms; R4 stands for an alkyl group having 1 to 6 C atoms; R5 stands for an alkyl group having 1 to 10 C atoms, which optionally comprises one or more ether oxygens; n stands for 2 or 3 or 4; and x stands for 0 or 1.