Polyoxazolidines with a structure containing carbonate groups, procedure for their preparation and use

Polyoxazolidines corresponding to the general formula (I):

• ##STR23## where, n is a number between 1 and 10, R is a n-valent radioal selected from:
• an N-ethyl-oxazolidinic radical ##STR24## a trivalent triethylisocyanurate radical, ##STR25## an n-valent alkylenic radical with a linear or branched chain, containing from 2 to 12 carbon atoms or a cycloalkylenic radical containing from 5 to 12 carbon atoms, the alkyl residue of a polyetheneglycol --(CH.sub.2 --CH.sub.2 --O ).sub.m --CH.sub.2 --CH.sub.2 -- m being a number between 1 and 10, the para-dimethylenecyclohexane radical, ##STR26## or R is an n-valent radical having the general formula, ##STR27## where R.sub.3 is the linear, cyclic or aryl hydrocarbon residue of a glycol containing up to 12 carbon atoms, whereas R.sub.4 has the same meaning as R excluding R=N--ethyl-oxazoline radical;
• R.sub.1 and R.sub.2 either the same or different, represent the hydrogen atom, an alkyl radical, having a linear or branched chain, containing from 1 to 6 carbon atoms, a cycloalkyl radical or an aryl radical or,
• R.sub.1 and R.sub.2 together with the carbon atom between them, represent a saturated cycloalkyl ring with 5, 6, or 7 carbon atoms.