Wolter, H.H.Wolter2022-03-082022-03-081993https://publica.fraunhofer.de/handle/publica/302803The invention relates to hydrolyzable and polymerizable silanes, a process for their production and their use for the production of poly(hetero)condensates and (hetero)polymers. The silanes have the general formula (I) Y<-n Si X<-m R<-4-(n+m) in which the remainders X, Y and R are equal or different where R = alkyl, alkenyl, aryl, alkylaryl or arylalkyl; X = hydrogen, halogen, hydroxy, alkoxy, acyloxy, alkylcarbonyl, alkoxycarbonyl or NR'<-2; R' = hydrogen, alkyl or aryl; Y = a substituent containing a substituted or unsusbstituted 1,4,6 trioxaspiro-<<4,4>>-nonan residue; n = 1, 2 or 3; m = 1, 2 or 3, and where n+m <= 4. The silanes are represented by converting silanes of the general formula II, Y'<-n Si X<-m R<-4-(n+m), in which the residues X, Y' and R are equal or different, where X, R, n and m have the above-mentioned meaning and Y' represents a residue containing a substituted oxiran ring with substituted or unsubstituted butyrolactones in the presence of a Lewis acid. The sila n es according to the invention are hydrolytically condensed separately or together with other hydrolyzable components and cured by polymerization, or they are polymerized separately or with other polymerizable components and then hydrolytically condensed. The silanes according to the invention are made into scratch-resistant coatings, fillers, adhesives or...de608666patent1991-4125201