| abstract |
The present invention relates to NCO-terminated polysiloxane prepolymers of the general formula (I)[(Q) q ]-[(M) m- (P) p- (R) r ] t , wherein R, P, M , Q, r, p, m, q and t are defined as follows: R is in each case independently of each other at least one polyisocyanate unit and/or at least one diisocyanate unit, P is in each case independently of each other at least one one polyol unit, M is in each case independently of one another at least one diisocyanate unit and/or at least one polyisocyanate unit, Q is at least one polysiloxane unit, r is in each case independently of one another 1 a number to 10, p is in each case independently a number from 1 to 10, m is in each case independently a number from 1 to 10, q is in each case independently a number from 1 to 10 , t is an integer from 2 to 5, and the unit M present is directly linked to the unit Q; relates to a process for preparing said prepolymer; and relates to its use as a curing agent in coating formulations. |