Sprayable coating compositions comprising oxazolidines and isocyanates

A coating composition comprising:

• (a) a bicyclic oxazolidine compound of the structure:
• wherein
• z is from 0 to 9;
• m and p are independently selected from 1 and 2;
• R3, R4, R5 and R6 may be the same or different and are selected from the group of hydrogen, linear or branched (cyclo)alkyl, and linear or branched aryl, optionally substituted;
• R3 and R4, and R5 and R6 may be joined together to form a 5 or 6 carbon ring with the attached carbon atom of the ring in the formula, i.e. R3 and R4, and R5 and R6 collectively represent a tetramethylene or a pentamethylene group;
• and
• R7 is a mono- or multivalent aliphatic, aromatic, arylaliphatic or cycloaliphatic moiety which may optionally contain oxygen, nitrogen, sulphur, and silica;
• and R7 may be H when z=0;
• (b) a monocyclic oxazolidine compound of the structure:
• wherein
• z is from 0 to 9;
• n is 2 or 3;
• R1 and R2 may be the same or different and are selected from the group of hydrogen, linear or branched (cyclo)alkyl, and linear or branched aryl, optionally substituted;
• R1 and R2 may be joined together to form a 5 or 6 carbon ring with the attached carbon atom of the ring in the formula, i.e. R1 and R2 collectively represent a tetramethylene or a pentamethylene group;
• and
• R7 is a mono- or multivalent aliphatic, aromatic, arylaliphatic or cycloaliphatic moiety which may optionally contain oxygen, nitrogen, sulphur, and silica;
• and R7 may be H when z=0;
• and
• (c) an isocyanate functional compound.