Masterbatch and polymer composition
AssigneeBiograde (Hong Kong) Pty Ltd
InventorChen CHANGPING
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Abstract
The present invention relates to a method of preparing a biodegradable polymer composition, said method comprising melt mixing a first biodegradable polyester and a masterbatch, wherein said masterbatch has been formed separately by melt mixing in the presence of a transesterification catalyst a polysaccharide, a second biodegradable polyester and a biodegradable polymer having pendant carboxylic acid groups.
Claims4
A masterbatch suitable for use in preparing a biodegradable polymer composition, said masterbatch comprising the following components and/or their transesterification reaction product:
- (a) polysaccharide;
- (b) biodegradable polyester;
- (c) biodegradable polymer having pendant carboxylic acid groups;
- and (d) transesterification catalyst.
A method of preparing a masterbatch suitable for use in the manufacture of a biodegradable polymer composition, said method comprising melt mixing in the presence of a transesterification catalyst a polysaccharide, a biodegradable polyester and a biodegradable polymer having pendant carboxylic acid groups.
Dependencies are inferred from the claim text.