Polimeri Europa S.p.a.

Mario Salvalaggio

Antonio Alfonso Proto

Paolo Biagini

Liliana Gila

Roberto Fusco

Giacomo Ottimofiore

Franco Cambisi

Lucia Bonoldi

The present invention relates to photoactive polymers and copolymers of acrylic monomers comprising cycloimide units functionalized with at least one luminescent chromophore group, preferably photoluminescent. The present invention also relates to spectrum converters comprising the above photoactive polymers and copolymers and solar devices comprising said converters.

Imidized polymers containing luminescent groups and method for obtaining them

A process is described for the purification of lanthanide carboxylates which comprises a step in which the hydrocarbon solution deriving from the synthesis of lanthanide carboxylate, containing said carboxylate and impurities of the corresponding carboxylic acid and/or water, is treated with an aqueous solution of a base in order to obtain a pH of the aqueous phase ranging from 9.0 to 12.2 and/or a step in which the hydrocarbon solution containing lanthanide carboxylate is treated with a solid selected from NaSO, MgSO, Mg(ClO), molecular sieves 3 &#x212b;, molecular sieves 4 &#x212b;, molecular sieves 5 &#x212b; and molecular sieves 13 X. Analytical methods are also described, which allow the purity of the lanthanide carboxylates to be non-destructively measured.

Process for the purification of lanthanide carboxylates

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Moriondo Torinese, Italy

Mario Salvalaggio