Patent ID: 11866606
Assignee: DANIMER IPCO, LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A biodegradable aqueous dispersion for coating food contact substrates, the dispersion comprising:
from about 35 to about 75 weight percent water;
from about 25 to about 65 weight percent of polyhydroxyalkanoates having a weight average molecular weight from about 50,000 Daltons to about 2.5 million Daltons;
from about 0.1 weight percent to about 5 weight percent of at least one nucleating agent;
from about 0.01 weight percent to about 5.0 weight percent of at least one surfactant;
from about 0.01 weight percent to about 5.0 weight percent of at least one rheology modifier;
from about 0.01 weight percent to about 2.5 weight percent of at least one wetting and dispersing agent; and
from about 0.01 weight percent to about 0.5 weight percent of at least one biocide or biostatic agent,
wherein the dispersion has an average solids content from about 25 percent to about 65 percent solids and
wherein the dispersion is prepared by
mixing water, the polyhydroxyalkanoates, the at least one surfactant, and the at least one wetting and dispersing agent to form a mixture comprising initial micelles of the polyhydroxyalkanoates,
homogenizing the mixture to form a dispersion, and
further adding the at least one nucleating agent, the at least one rheology modifier, and the at least one biocide or biostatic agent to the dispersion.