Use of ethoxylated fatty amido alcohols as a reactivity additive in the process wherein cellulose is reacted with lye

Patent metadata

Field	Value
Publication number	US-12060442-B2
Application number	US-201917278019-A
Country	US
Kind code	B2
Filing date	Sep 23, 2019
Priority date	Sep 21, 2018
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

The present disclosure relates to the use of alkoxylated fatty amido alcohols in the process to make viscose wherein cellulose is reacted with lye and the lye strength is from about 8 to about 20% by weight of NaOH, based on the weight of water in the reaction mixture. The use as a reaction improvement additive improves the reaction rate between the cellulose and the lye. The use also improves the reaction between alkali-cellulose and CS2. The present disclosure also relates to solid cellulose that is treated with one or more ethoxylated fatty amido alcohols and which is suitable for use in the claimed process.

First claim

What is claimed is:

1. Process wherein about 0.005 to about 2.0% by weight of an alkoxylated fatty amido alcohol is added to a cellulose pulp during or before reacting the cellulose with a lye, whereby the lye strength is from about 8 to about 20% by weight of NaOH, based on the weight of water in the reaction mixture, and the weight of the alkoxylated fatty amido alcohol is based on the weight of the cellulose, wherein the alkoxylated fatty amido alcohol is chosen from coco monoethanolamide ethoxylated with from about 5 to about 15 moles of ethylene oxide, coco diethanolamide ethoxylated with from about 5 to about 15 moles of ethylene oxide, and combinations thereof.

2. A solid cellulose composition comprising cellulose and from about 0.005 to about 2.0% by weight of an alkoxylated fatty amido alcohol, based on the weight of the cellulose wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with from about 5 to about 15 moles of ethylene oxide.

3. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco monoethanolamide ethoxylated with 5 to 12 moles of ethylene oxide.

4. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco monoethanolamide ethoxylated with 8 to 12 moles of ethylene oxide.

5. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco monoethanolamide ethoxylated with 12 to 15 moles of ethylene oxide.

6. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco monoethanolamide ethoxylated with 8 to 15 moles of ethylene oxide.

7. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with from about 8 to about 12 moles of ethylene oxide.

8. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with 8 to 15 moles of ethylene oxide.

9. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with 5 to 12 moles of ethylene oxide.

10. Process of claim 1 wherein the alkoxylated fatty amido alcohol is a coco diethanolamide that is ethoxylated with about 12 to 15 moles of ethylene oxide.

11. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco monoethanolamide ethoxylated with from 5 to 15 moles of ethylene oxide.

12. Process of claim 1 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with from 5 to 15 moles of ethylene oxide.

13. The solid cellulose composition of claim 2 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with from 5 to 12 moles of ethylene oxide.

14. The solid cellulose composition of claim 2 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with from 8 to 15 moles of ethylene oxide.

15. The solid cellulose composition of claim 2 wherein the alkoxylated fatty amido alcohol is coco diethanolamide ethoxylated with from 8 to 12 moles of ethylene oxide.

Assignees

• Nouryon Chemicals Int Bv

Inventors

• Westbye Peter

Classifications

• C08B1/08

  Alkali cellulose · CPC title

• C08L1/02

  Cellulose; Modified cellulose · CPC title

• D01F2/18

  Addition to the spinning solution of substances to influence ripening · CPC title

• C08B9/00 Primary

  Cellulose xanthate; Viscose {(formation of films C08J5/18; formation of fibres D01F; rendering cellulose suitable for esterification C08B1/02)} · CPC title

• D21C9/002 Primary

  by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives · CPC title