US 12,305,331 B2
Suspensions including cellulose nanofibril and polyester
Emily Facchine, Raleigh, NC (US); Saad A. Khan, Raleigh, NC (US); Orlando Rojas, Vancouver (CA); Richard J. Spontak, Raleigh, NC (US); Soo Ah Jin, Cary, NC (US); and Koushik Ghosh, Albuquerque, NM (US)
Assigned to North Carolina State University, Raleigh, NC (US); and Eastman Chemical Company, Kingsport, TN (US)
Appl. No. 17/609,107
Filed by North Carolina State University, Raleigh, NC (US); and Eastman Chemical Company, Kingsport, TN (US)
PCT Filed May 6, 2020, PCT No. PCT/US2020/031621
§ 371(c)(1), (2) Date Nov. 5, 2021,
PCT Pub. No. WO2020/227372, PCT Pub. Date Nov. 12, 2020.
Claims priority of provisional application 62/844,273, filed on May 7, 2019.
Prior Publication US 2022/0205183 A1, Jun. 30, 2022
Int. Cl. D21H 11/18 (2006.01); C09D 7/20 (2018.01); C09D 7/40 (2018.01); C09D 101/02 (2006.01); C09D 167/00 (2006.01); D21H 17/53 (2006.01); D21H 23/04 (2006.01)
CPC D21H 11/18 (2013.01) [C09D 7/20 (2018.01); C09D 7/70 (2018.01); C09D 101/02 (2013.01); C09D 167/00 (2013.01); D21H 17/53 (2013.01); D21H 23/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A suspension, comprising:
a polar solvent;
sulfonated polyester material dispersed in the polar solvent; and
cellulose nanofibril material dispersed in the polar solvent;
wherein the cellulose nanofibril material is present at no less than 3.0 wt % and at no more than 10 wt % of the suspension.