abstract |
The present invention discloses by combining at least one monomeric, oligomeric or polymeric isocyanate with two or more isocyanate groups with 2-hydroxy-3-butenoic acid and/or 2-hydroxy-3-butenoic acid Oligomers or polymers obtained by the reaction of at least one alkyl ester of . Compositions comprising the oligomers or polymers are also disclosed. |