Granted Patent
B2
US 12,545,866 · App. 18/904,356 · Granted Feb 10, 2026
Articles of manufacture comprising nanocellulose elements
Inventors:
David S. Soane (Coral Gables, FL); Allison Hope Greene (Reno, NV); Juan Sebastian Colmenares (Reno, NV)
Assignee:
Soane Materials LLC
C11D17/042C11D17/045D21H11/12D21H11/14D21H11/18D21H17/06D21H17/07D21H17/14D21H17/20D21H17/26D21H17/34D21H17/36D21H21/08D21H21/10C11D2111/12C11D2111/14
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Abstract
The present invention provides formulations comprising a suspension of nanocellulose (NC) elements and a drying/dispersal additive selected from the group consisting of temperature-responsive polymers, small molecule additives in volatile systems, and blocking agents and methods of preparing such formulations, and further provides NC-containing materials, composite materials and useful articles of manufacture made therefrom.
Claims (21)
1 . A method of producing an article of manufacture comprising a redispersible, dried nanocellulose (NC)-containing matrix comprising nanocellulose elements (NCEs),
wherein an active agent is supported by, embedded in, attached to, or otherwise associated with the NC-containing matrix, and
wherein the active agent is selected from the group consisting of soaps, hair hold products, emollients, and cosmetics;
the method comprising:
drying a liquid formulation to form the redispersible, dried NC-containing matrix,
wherein the liquid formulation comprises a suspension of the nanocellulose elements (NCEs) in a liquid medium, a drying/dispersal additive, and the active agent;
wherein the drying/dispersal additive is a lower critical solution temperature (LCST) polymer;
wherein the drying comprises heating the liquid formulation to a temperature above the transition temperature of the LCST polymer, and wherein the LCST polymer disrupts hydrogen bonding between the NCEs after the heating.
2 . The method of claim 1 , the method further comprising adding a redispersing fluid to the article and wherein the active agent is released.
3 . The method of claim 1 , wherein the NCEs comprise precolored NCEs or wherein color-bearing particles are incorporated into the NC-containing matrix.
4 . The method of claim 1 , wherein the NCEs are derived from lignocellulosic materials.
5 . The method of claim 1 , wherein the NCEs comprise cellulose nanofibers or cellulose microfibers.
6 . The method of claim 1 , wherein the active agent is the soap or the cosmetic.
7 . The method of claim 1 , wherein the drying/dispersal additive is biodegradable.
8 . The method of claim 1 , wherein the LCST polymer is selected from the group consisting of methyl cellulose, hydroxylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, ethylhydroxyethyl cellulose, polyvinylcaprolactam, poly(methyl vinyl ether), poly(N-isopropylacrylamide), poly(N,N-diethylacrylamide), poly(ethylene oxide) and poly(propylene oxide) block copolymer, and elastin poly(pentapeptide).
9 . The method of claim 8 , wherein the LCST polymer is methyl cellulose, hydroxylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, or ethylhydroxyethyl cellulose.
10 . The method of claim 9 , wherein the LCST polymer is methyl cellulose.
11 . The method of claim 1 , wherein the LCST polymer is selected from:
i. a mixture of hydroxypropyl cellulose and carboxymethyl cellulose;
ii. a mixture of hydroxypropylmethyl cellulose and carboxymethyl cellulose, and
iii. a mixture of methyl cellulose and carboxymethyl cellulose.
Continuity (7)
Provisional Application
63309730
· Feb 14, 2022
Provisional Application
63219686
· Jul 8, 2021
Provisional Application
63208577
· Jun 9, 2021
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