Hydrolysis resistant polyester film
AssigneeDuPont Teijin Films U.S. Limited Partnership
InventorsAllan Lovatt, Anthony Whitehead, Emily Parnham
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Abstract
The use of titanium dioxide particles coated by an organic coating for increasing the hydrolysis resistance of an oriented polyester film, particularly wherein the organic coating does not comprise or is not derived from a silane, and particularly wherein the organic coating is selected from an organophosphorus compound and a polymeric organic coating; and oriented polyester films comprising such titanium dioxide particles coated by an organic coating; and photovoltaic cells comprising such films.
Claims22
A photovoltaic cell comprising a front-plane, electrode layer(s), photovoltaic-active layer(s), and a back-plane, wherein the front-plane and/or the back-plane comprises an oriented polyester film, wherein the oriented polyester film comprises titanium dioxide particles wherein said particles are coated by an organic coating which is an alkylphosphonic acid or an ester of the alkylphosphonic acid wherein the alkylphosphonic acid contains from 6 to 22 carbon atoms;
- and wherein the oriented polyester film comprises said titanium dioxide particles in an amount of from about 5 wt % by total weight of the film, and
- wherein the oriented polyester film does not comprise an additional organic hydrolysis stabiliser.
Dependencies are inferred from the claim text.