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US 2021/0198407 A1Published application
A grafted polylactic acid
AssigneeBYK-Chemie GmbH
InventorsInno Rapthel, Frederik Piestert, Andre Rapthel, Thorsten Kröller, Patricia Oostendorp, Lisa Bachmann
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Abstract
A grafted polylactic acid is provided, wherein the grafted polylactic acid contains carboxylic acid end groups in an amount from 1.0 to 10.0 mg KOH/g and contains epoxide groups in an amount from 0.005 to 0.500 mmol/g.
Claims21
A grafted polylactic acid, wherein the grafted polylactic acid contains carboxylic acid end groups in an amount from 1.0 to 10.0 mg KOH/g and contains epoxide groups in an amount from 0.005 to 0.500 mmol/g.
A method for preparing a grafted polylactic acid, comprising:
- providing
- a polylactic acid containing carboxylic acid end groups,
- an epoxide-functional ethylenically unsaturated polymerizable monomer, and
- a radical generating agent;
- mixing the polylactic acid, the epoxide-functional ethylenically unsaturated polymerizable monomer, and the radical generating agent,
- processing the mixture of the polylactic acid, the epoxide-functional ethylenically unsaturated polymerizable monomer, and the radical generating agent at a temperature between 80° C. and 160° C. to yield a grafted polylactic acid containing carboxylic acid end groups in an amount from 1.0 to 10.0 mg KOH/g and epoxide groups in an amount from 0.005 to 0.500 mmol/g.
3 more elements
Dependencies are inferred from the claim text.