Oxazolidines containing silane groups

Abstract

Abstract Compounds of the general formula I ##STR1## in which R 1 is hydrogen, C 1 -C 12 -alkyl, C 5 -C 7 -cycloalkyl, phenyl or benzyl and R 2 is hydrogen or C 1 -C 4 -alkyl, or R 1 and R 2 , together with the C atom to which they are attached, form a 5-membered or 6-membered ring, and R 3 , R 4 , R 5 and R 6 are identical or different and are hydrogen, C 1 -C 12 -alkyl, phenyl which is unsubstituted or monosubstituted to trisubstituted by C 1 -C 4 -alkyl, halogen or C 1 -C 4 -alkoxy, or is a group of the formula --CH 2 OR 7 (II) in which R 7 is C 1 -C 12 -alkyl, phenyl which is unsubstituted or monosubstituted to trisubstituted by C 1 -C 4 -alkyl, halogen or C 1 -C 4 -alkoxy, or is --C(O)--R 8 , and R 8 is C 1 -C 12 -alkyl, and also not more than two of the radicals R 3 , R 4 , R 5 and R 6 are one or two groups of the formula --CH 2 CH 2 Si(OR 9 ) 3 (III), --CH 2 OC(O)CH 2 CH 2 Si(OR 9 ) 3 (IV), --CH 2 O(C m H 2m )Si(OR 9 ) 3 (V) or ##STR2## in which R 9 is C 1 -C 4 -alkyl or phenyl and m is a number from 1 to 8 and r is a number 1 or 2 and t is 0, 1 or 2 and R 1 is as defined above, and, in addition, compounds of the formula I in which R 4 and R 5 together form a group of the formula ##STR3## in which R 9 is as defined above and R 3 and R 6 in this case are hydrogen and n is 1 or 2 and, if n is 1, Z is an organic radical which is derived from a primary amine ZnH 2 and can contain one or two --Si(OR 9 ) 3 groups and, if n is 2, Z is a divalent organic radical derived from a diprimary diamine H 2 NZNH 2 ; subject to the proviso that the compounds of the formula I contain one to three --Si(OR 9 ) 3 groups, are suitable for use as adhesion promoters, particularly for moisture-curing epoxide and polyurethane resins.

Inventors

• 👤 Rolf Mulhaupt
• 👤 Hubert Simon

Bibliographic Details