US 12,473,413 B2
Foam precursor and foam with biodegradable copolymer and methods thereof
William Thomas Lewczyk, Santa Cruz, CA (US); John Selberg, Santa Cruz, CA (US); Juan Manuel Bravo, Fairlawn, OH (US); Nicholas Cesario, Pasadena, CA (US); Maxwell Talbot, Pescadero, CA (US); Julia Ross, Santa Cruz, CA (US); Maanas Maheshwari, Saratoga, CA (US); Dylan Brown, San Diego, CA (US); and Vanessa Shaffer, San Diego, CA (US)
Assigned to Cruz Foam, Inc., Santa Cruz, CA (US)
Filed by Cruz Foam, Inc., Santa Cruz, CA (US)
Filed on Oct. 18, 2024, as Appl. No. 18/920,211.
Claims priority of provisional application 63/591,678, filed on Oct. 19, 2023.
Prior Publication US 2025/0129225 A1, Apr. 24, 2025
Int. Cl. C08L 3/02 (2006.01); C08J 9/00 (2006.01); C08J 9/18 (2006.01)
CPC C08J 9/0061 (2013.01) [C08J 9/18 (2013.01); C08L 3/02 (2013.01); C08J 2201/03 (2013.01); C08J 2303/02 (2013.01); C08J 2467/03 (2013.01); C08L 2201/06 (2013.01); C08L 2203/14 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A foam precursor, comprising:
a plurality of granules, wherein individual granules included in the plurality of granules comprise:
an unmodified starch;
polybutylene adipate-co-therephthalate (PBAT), wherein a PBAT weight percent representative of the PBAT included in the plurality of granules is from 10% to 40%, wherein a starch weight percent representative of the unmodified starch included in the plurality of granules is greater than the PBAT weight percent; and
water, wherein a water weight percent representative of the water included in the plurality of granules is 20% or less, wherein the PBAT weight percent is greater than the water weight percent, and wherein a density of the individual granules included in the plurality of granules is from 400 kg/m3 to 1500 kg/m3.