Silane-modified polyurea compounds based on polyisocyanates having isocyanurate and allophanate groups

摘要

In the present invention, polyisocyanates based on isocyanurate and isophorone diisocyanate having an allophanate group have the general formula (I): R ¹_a (R ¹ O) _(3-a) Si(CH ₂ ) _n NHCHR ² CH ₂ COOR ³ relates to a polyurea compound that can be prepared by reacting with an amino silane according to (I), wherein the R ¹ groups are independently of each other C ₁ -C ₂₀ -alkyl or C ₆ -C ₂₀ -aryl Is selected from, a is an integer from 0 to 2, n is an integer from 1 to 4, R ² is selected from H, C ₁ -C ₂₀ -alkyl, C ₆ -C ₁₂ -aryl and -COOR ³ , Each R ³ is C ₁ -C ₂₀ -alkyl. The invention also relates to the use of such compounds as binders for preparing coatings.