	US 11,814,524 B2
	Wood paste and objects made therefrom
Doron Kam, Ramat Raziel (IL); Michael Layani, Jerusalem (IL); Oded Shoseyov, Shoham (IL); and Shlomo Magdassi, Jerusalem (IL)
Assigned to Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.
Appl. No. 16/959,856
Filed by YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD, Jerusalem (IL)
PCT Filed Jan. 7, 2019, PCT No. PCT/IL2019/050033 § 371(c)(1), (2) Date Jul. 2, 2020, PCT Pub. No. WO2019/135245, PCT Pub. Date Jul. 11, 2019.
Claims priority of provisional application 62/614,438, filed on Jan. 7, 2018.
Claims priority of provisional application 62/614,437, filed on Jan. 7, 2018.
Prior Publication US 2020/0369888 A1, Nov. 26, 2020
Int. Cl. C08L 97/02 (2006.01); C08K 13/04 (2006.01); C08L 1/02 (2006.01); C08L 3/02 (2006.01); C08L 5/14 (2006.01); C08L 97/00 (2006.01); C09D 197/02 (2006.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01)

CPC C08L 97/02 (2013.01) [C08K 13/04 (2013.01); C08L 1/02 (2013.01); C08L 3/02 (2013.01); C08L 5/14 (2013.01); C08L 97/005 (2013.01); C09D 197/02 (2013.01); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C08K 2201/011 (2013.01); C08L 2203/16 (2013.01)]

14 Claims

1. A paste or plasticine-like mixture comprising water; at least one natural wood material selected from wood flour, wood chop and wood chips; cellulose nanocrystals (CNC); and at least one hemicellulose and/or lignin and/or starch, wherein the at least one natural wood material is free of unnatural or synthetic additives; the composition being for use in

(a) a process of fabrication of 3D wood objects; or

(b) a process for coating or covering a surface region of an object with the wood material;

wherein the mixture is free of formaldehyde, synthetic resins and/or epoxy based materials;

wherein the CNC is a crystalline rod-like material with a length of between 100 and 400 nm; and

wherein the amount of CNC is between 0.01 wt % and 20 wt %.