	US 12,415,870 B2
	Aqueous resin composition and use as binder in fibre-based products
Hendrikus W. G. Van Herwijnen, Hausleiten/Goldgeben (AT); Wolfgang Kantner, Schwarzenau (AT); Arianna Lucia, Vienna (AT); and Thomas Rosenau, Vienna (AT)
Assigned to KREMSCHEM AUSTRIA GMBH, Krems an der Donau (AT)
Appl. No. 17/909,401
Filed by Metadynea Austria GmbH, Krems (AT)
PCT Filed Mar. 5, 2021, PCT No. PCT/EP2021/055657 § 371(c)(1), (2) Date Sep. 5, 2022, PCT Pub. No. WO2021/176087, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 20161303 (EP), filed on Mar. 5, 2020.
Prior Publication US 2023/0086035 A1, Mar. 23, 2023
Int. Cl. C08B 15/00 (2006.01); C08B 15/02 (2006.01); C08J 5/04 (2006.01); C08K 5/544 (2006.01)

CPC C08B 15/005 (2013.01) [C08B 15/02 (2013.01); C08J 5/043 (2013.01); C08K 5/544 (2013.01); C08J 2301/04 (2013.01)]

27 Claims

1. An aqueous resin composition comprising a resin in water, which resin is a reaction product of an oxidised polysaccharide and a crosslinking agent,

a) which oxidised polysaccharide is an oxidised cellulose comprising between 3 and 12.2 mmole of aldehyde groups per gram cellulose,

b) which crosslinking agent comprises two or more groups reactive with the aldehyde groups,

c) wherein the aldehyde groups in the resin in the aqueous resin composition are in hydrated or un-hydrated form and are at least partly converted to inter- or intramolecular hemiacetals,

d) wherein the resin is dispersed and/or dissolved but not gelled.