(Meth)acrylic ester binders from glycolyzed aromatic polyesters

   
   

Described are methacrylate or acrylate binders e.g. obtainable by the steps of (i) generating OH-precursors from at least one aromatic polyester, and (ii) reacting said OH-precursors of step (i) with methacrylic acid and/or acrylic acid to form a respective ester, whereby step (i) comprises reacting an aromatic polyester, or a mixture of aromatic polyesters with at least one polyol and/or at least one aminopolyol to generate hydroxy terminated oligomers. Optionally, a modified product can be obtained by performing a further reaction in step (i), namely by reacting said hydroxy terminated oligomer with at least one polycarboxylic acid and/or at least one polycarboxylic anhydride to generate said hydroxy terminated binder precursor oligomer.

São descritas as pastas do methacrylate ou do acrylate por exemplo obteníveis pelas etapas (i) que geram de OH-oH-precursors ao menos de um poliéster aromatic, e (ii) reagindo OH-oH-precursors ditos da etapa (i) com o ácido methacrylic e/ou o ácido acrílico para dar forma a um ester respectivo, por meio de que a etapa (i) compreende reagir um poliéster aromatic, ou a uma mistura de poliésteres aromatic com ao menos o um polyol e/ou ao menos o um aminopolyol para gerar oligomers terminados hydroxy. Opcionalmente, um produto modificado pode ser obtido executando uma reação mais adicional na etapa (i), a saber reagindo oligomer terminado hydroxy dito com ao menos o um ácido polycarboxylic e/ou ao menos o um anhydride polycarboxylic para gerar oligomer terminado hydroxy dito do precursor da pasta.

 
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