US 12,269,936 B2 · Cellulose processing

Abstract

The present invention relates to methods for processing plant and/or micro-organism derived cellulose materials into rheology/structuring agents. More in particular, the present invention relates to methods wherein plant and/or micro-organism derived cellulose material is co-processed with carboxycellulose. The methods of the present invention provide a variety of benefits, in terms of process efficiency and scalability as well as in relation to the properties of the materials that are obtainable using these methods. For instance, it has been found that (highly) concentrated products produced using the method of the invention are easily (re)dispersible in water and aqueous systems to regain much of the cellulose component's original rheological performance.

Claims14

Dependent claims

A composition obtainable by a process comprising:

(a) blending a quantity of carboxycellulose with a mixture of an aqueous liquid and a non-fibrillated plant or micro-organism derived cellulose material to reach a ratio of cellulose material to carboxycellulose (w/w) of more than 90/10;
(b) subjecting the blend from (a) to mechanical and/or enzymatic fibrillation treatment;
(c) mechanically de-watering the composition from (b) to a dry matter content of at least 5 wt. %;
and
(d) blending a further quantity of the carboxycellulose with the composition from (c), wherein the composition is in the form of a paste having a dry matter content of at least 10 wt. %.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/220,685Filed 11 Jul 2023 · continuation

Priority

EP 172001036 Nov 2017

Published

US 2023/0357542 A19 Nov 2023

Granted

8 Apr 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C08L 1/02
Compositions of cellulose, modified cellulose or cellulose derivatives: cellulose; Modified cellulose
C08L 1/286
Alkyl ethers: substituted with acid radicals, e.g. carboxymethyl cellulose [CMC]
D21B 1/028
Separating fibrous materials from waste: by dry methods
D21C 5/005
Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting…:…

Family

PCT/EP2018/080191Parent of this continuation · filed 5 Nov 2018

Application16/867,302Parent of this continuation · filed 5 May 2020

US 2023/0357542 A1Pre-grant publication · published 9 Nov 2023

US 11,739,197 B2Parent of this continuation

US 2020/0270429 A1Published application

US 12,269,936 B2This patent

From the US filing history. Foreign family members aren’t listed.

Cellulose processing

Life of this patent

Cellulose processing

Life of this patent

Abstract

Claims14