R4 is a hydrogen, or an aliphatic, cycloaliphatic or aromatic radical having from 1 to 9 carbon atoms, or ##STR31## Q is the monovalent or polyvalent residue of a monomeric aliphatic, cycloaliphatic or aromatic isocyanate compound having at least one isocyanate group, which residue remains after reaction of all isocyanate groups of such monomeric compound with {HEAD ~ at least one saturated or unsaturated compound} containing {TAIL ~ at least one isocyanate reactive active hydrogen atoms} 
containing
R4 is a hydrogen , or an aliphatic , cycloaliphatic or aromatic radical having from 1 to 9 carbon atoms , or # # STR31 # # Q is the monovalent or polyvalent residue of a monomeric aliphatic , cycloaliphatic or aromatic isocyanate compound having at least one isocyanate group , which residue remains after reaction of all isocyanate groups of such monomeric compound with { HEAD ~ at least one saturated or unsaturated compound } containing { TAIL ~ at least one isocyanate reactive active hydrogen atoms }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL