ELECTROCHROMIC DEVICES WITH A VINYL-ACRYLIC BASE AND METHOD FOR OBTAINING THE SAME

The present invention refers to the development and obtention of novel electrochromic devices of variable transmission resulting from intrinsic conductive polymers and ions (polyelectrolytes) confined in a multilayer structure. These devices are able to modulate the light that passes therethrough by means of an oxide-reduction process and electron transference, which allow the transmittance level to be controlled as well as the change of colour in the material depending on the applied potential. The devices of the present invention are multilayer structures of 5 to 7 layers, which consist in a polymer layer of transparent substrate, such as: polymethacrylate, polystyrene, polycarbonate, Polyethylene terephthalate or polyolefins, a layer of an electric conductive polymer (polypirrol, polyaniline, polyacetylene, polythiophene and derivatives thereof); a layer of electronic polymer (polyethylene dioxythiophene (PEDOT), polyaniline(PANI), polypirrol (PPY), an electrolyte and/or polyelectr olyte of polymeric origin; another layer of electrochromic polymeric origin (PEDOT, PANI, POLYPIRROL) and another layer of transparent substrate, so that the device of 5 layers of conductive polymer acting as an electrochromic material and as a ion collector. In addition, the invention comprises the process for obtaining each element of said device, and the final product obtained from said device. La presente invención se refiere al desarrollo y obtención de nuevos dispositivos electrocrómicos de transmisión variable partiendo de polímeros conductores intrínsecos e iónicos (polielectrolíticos) confinados en una estructura multicapa. Estos dispositivos son capaces de modular La luz que pasa a través de su estructura mediante procesos de óxido-reducción y transferencia de electrones, permitiendo controlar el nivel de transmitancia y el cambio de color del material en función de un potencial aplicado. Los dispositivos de la presente invención son estructuras multicapa de 5 a 7 capas, consistentes en una capa de polímero de substrato transparente, tales como: polimetacrilato, poliestireno, policarbonato, polietilentereftalato o poliolefinas; una capa de polímero conductor electrónico (polipirrol, polianilina, poliacetileno, politiofeno y sus derivados); una capa de polímero electrónico (Polietilendioxitiofe no (PEDOT)), polianilina (PANI), Polipirrol (PPy), un electrolito y/o polielectrolito de origen polimérico; otra capa de polímero electrocrómico (PEDOT, PANI, POLIPIRROL) y ot