Composition comprising a grafted polylactic acid
AssigneesBKY-Chemie GmbH, BYK Netherlands B.V.
InventorsInno Rapthel, Frederik Piestert, Evert Jan Aalderink, Lisa Höhm, Patricia Oostendorp, Thorsten Kröller, Andre Rapthel
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Abstract
A composition is provided comprising an epoxide functional polymer comprising epoxide functional groups, wherein the epoxide functional polymer has a number average molecular weight of 1000 to 10.000 g/mol and a grafted polylactic acid, wherein the polylactic acid is grafted with an acid-functional ethylenically unsaturated polymerizable monomer and/or an acid anhydride-functional ethylenically unsaturated polymerizable monomer and has a total amount of carboxylic acid groups and carboxylic acid anhydride groups between 10.0 and 60.0 mg KOH/g.
Claims21
A composition comprising an epoxide functional polymer comprising epoxide functional groups, wherein the epoxide functional polymer has a number average molecular weight of 1000 to 10,000 g/mol, determined according to DIN 55672 part 2 (year:
- 2008), and a grafted polylactic acid, wherein the polylactic acid is grafted with an acid-functional ethylenically unsaturated polymerizable monomer and/or an acid anhydride-functional ethylenically unsaturated polymerizable monomer and has a total amount of carboxylic acid groups and carboxylic acid anhydride groups between 10.0 and 60.0 mg KOH/g, determined according to DIN EN ISO 2114.
A method for processing a polylactic acid blend, the method comprising:
- providing components comprising:
- a polylactic acid containing carboxylic acid groups in an amount from 1.0 to at most 10.0 mg KOH/g,
- an epoxide functional polymer comprising epoxide functional groups, wherein the epoxide functional polymer has a number average molecular weight of 1000 to 10.000 g/mol, and
- a grafted polylactic acid, wherein the polylactic acid is grafted with an acid-functional ethylenically unsaturated polymerizable monomer and/or an acid anhydride-functional ethylenically unsaturated polymerizable monomer and has a total amount of carboxylic acid groups and carboxylic acid anhydride groups between 10.0 and 60.0 mg KOH/g;
- mixing the components;
- and
- melt processing the mixture.
Dependencies are inferred from the claim text.