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US 2026/0109829 A1Published application
Melt processable and foamable cellulose acetate formulations containing natural fillers
AssigneeEastman Chemical Company
InventorsYichen Fang, Goliath Beniah, Michael Eugene Donelson
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Abstract
The present application discloses a foamable composition comprising 30 to 92 wt % cellulose acetate: 5 to 30 wt % of at least one plasticizer: 3 to 40 wt % of at least one natural filler; and 0) to 9 wt % of at least one physical blowing agent. The composition can be used to prepare biodegradable foam and foam articles having densities, cell sizes, mechanical and thermal properties appropriate for low and medium density foam applications.
Claims20
A foamable composition comprising:
- 30 to 92 wt % cellulose acetate;
- 5 to 30 wt % of at least one plasticizer;
- 3 to 40 wt % of at least one natural filler;
- and
- 0 to 9 wt % of at least one physical blowing agent;
- wherein wt % is based on the total weight of the composition,
- wherein the cellulose acetate has an average degree of substitution of acetyl in the range from 2.2 to 2.6,
- wherein the natural filler is a biodegradable particulate material derived from a renewable organic source, and
- wherein the natural filler has a maximum particle size from 50 to 600 microns.
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Dependencies are inferred from the claim text.