Polymer composition comprising basic additive, process and articles comprising said polymer composition
AssigneeRhodia Acetow GmbH
InventorsDirk Hölter, Philippe Lapersonne
Life of this patent
Estimating the term…
Abstract
The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.
Claims21
An article comprising a polymer composition comprising at least one polymer and at least one basic additive,
- wherein the at least one basic additive has a pH of equal to or less than 11 and equal to or higher than 8.5 when measured in a 1 wt. % solution in water at 20° C.;
- wherein the polymer composition comprises 0.01 to 40 wt. % of basic additive based on the weight of polymer and basic additive;
- wherein the at least one polymer is selected from the group consisting of polysaccharide esters;
- wherein the at least one basic additive is incorporated into the polymer composition in the form of particles, and
- wherein a film is excluded as an article.
(canceled)
(canceled)
A film comprising a polymer composition comprising at least one polymer and at least one basic additive,
- wherein the at least one basic additive has a pH of equal to or less than 11 and equal to or higher than 8.5 when measured in a 1 wt. % solution in water at 20° C.;
- wherein the polymer composition comprises 2.5 wt. % of magnesium oxide as basic additive based on the weight of polymer and basic additive;
- wherein the at least one polymer is cellulose acetate;
- and
- wherein the at least one basic additive is incorporated into the polymer composition in the form of particles.
A film comprising a polymer composition comprising at least one polymer and at least one basic additive,
- wherein the at least one basic additive has a pH of equal to or less than 11 and equal to or higher than 8.5 when measured in a 1 wt. % solution in water at 20° C.;
- wherein the polymer composition comprises 0.01 to 40 wt. % of basic additive based on the weight of polymer and basic additive;
- wherein the at least one polymer is cellulose acetate;
- and
- wherein the at least one basic additive is incorporated into the polymer composition in the form of particles and wherein the film further comprises at least one inhibitor of autocondensation reactions occurring in solvents with at least one carbonyl function and a C—H bond in α-position to said carbonyl function, which is selected from the group consisting of carboxylic acids and alcohols.
Dependencies are inferred from the claim text.