Repsol, S.a.

Mónica García Ruiz

Sonia Segura Fernández

Carolina Ruiz Orta

Laura Marín Perales

María Dolores Blanco González

Rafael Polo Abad

María Dolores Blanco Gonzälez

Román Galdámez Peña

José Miguel Martín Martínez

Andrés Jesús Yáñez Pacios

Borja Arandilla

Ana Isabel Real Guerrero

Rodrigo Paris

José Román Galdämez Peña

Julián Pedro González Rivero

Sonia Segura FERNÁNDEZ

Enrique DOMÍNGUEZ Ramos

Román GALDÁMEZ PEÑA

Laura MARÍN Perales

María Dolores Blanco GONZÁLEZ

A polyether carbonate polyol with a nominal functionality of 3 or more includes an equivalent molecular weight between 20,000 and 500,000 Da, and content of between 0.5 wt % and 35 wt % of CObased on the total weight of the polyether carbonate polyol. The polyether carbonate polyol has adhesive and impact modifying properties.

High molecular weight polymers from waste raw materials

The present invention refers to a formulation suitable for the manufacture of a pressure sensitive adhesive, said formulation comprising: a) 40-95 wt % of polyalkylene carbonate having a number average molecular weight higher than 17.000 Da; b) 5-60 wt % of a polyether carbonate polyol having COgroups randomly incorporated in the chemical structure thereof, wherein the content of COranges from 0.5 to 40 wt %, based on the total weight of the polyether carbonate polyol; and c) optionally, less than 30 wt % of a tackifying resin, provided that said formulation does not contain any reticulating agent.

Formulations for pressure sensitive adhesives

The present invention is directed to a polymer blend comprising at least one polyalkylencarbonate (PAC) and at least one polyhydroxyalkanoate (PHA) with low crystallinity. The invention also describes processes to prepare the blends of the invention and articles made of said blends.

Polyalkylencarbonate and polyhydroxyalkanoate blends

The present invention relates to a process for the preparation of polyether carbonate polyols in the presence of a double metal cyanide catalysts that can be obtained by a process comprising (a) synthesizing a solid double metal cyanide catalyst in the presence of an organic complexing agent and a polyether polyol ligand; and (b) first washing the catalyst obtained in step a) with an aqueous solution comprising 90-100% by weight of water and 0-10% by weight of a polyether polyol ligand, to form a slurry, wherein the aqueous solution does not contain any organic complexing agent other than the polyether polyol ligand.

Process for preparing polyether carbonate polyols

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Madrid, Spain

Mónica García Ruiz