Viscoelastic, solid-state surfactant composition having a high surfactant content

Patent metadata

Field	Value
Publication number	US-11261407-B2
Application number	US-201916715691-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Jun 16, 2017
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A viscoelastic, solid-state surfactant composition for textile treatment, containing based on the total weight thereof (i) a total amount of 10% to 70% by weight of at least one surfactant, (ii) a total amount of more than 1% by weight of at least one benzylidene alditol compound of formula (I), and (iii) water, constitutes an easily soluble, aesthetically pleasing and storage-stable form of a solid-state composition for providing surfactant-containing liquors.

First claim

What is claimed is:

1. A viscoelastic, solid surfactant composition for treating textiles, comprising, based on the total weight thereof,
(i) a total amount of from 10 to 70 wt. % of at least one surfactant and
(ii) a total amount of more than 2 wt. % of at least one benzylidene alditol compound of formula (I)

in which
*- represents a covalent single bond between an oxygen atom of the alditol backbone and the provided functional group,
n represents 0 or 1,
m represents 0 or 1,
R 1 , R 2 and R 3 represent, independently of one another, a hydrogen atom, a halogen atom, a C 1 -C 4 alkyl group, a cyano group, a nitro group, an amino group, a carboxyl group, a hydroxy group, a —C(═O)—NH—NH 2 group, a —NH—C(═O)—(C 2 -C 4 -alkyl) group, a C 1 -C 4 alkoxy group, a C 1 -C 4 alkoxy C 2 -C 4 alkyl group, with two of the functional groups forming, together with the remainder of the molecule, a 5-membered or 6-membered ring,
R 4 , R 5 and R 6 represent, independently of one another, a hydrogen atom, a halogen atom, a C 1 -C 4 alkyl group, a cyano group, a nitro group, an amino group, a carboxyl group, a hydroxy group, a —C(═O)—NH—NH 2 group, a —NH—C(═O)—(C 2 -C 4 -alkyl) group, a C 1 -C 4 alkoxy group, a C 1 -C 4 alkoxy C 2 -C 4 alkyl group, with two of the functional groups forming, together with the remainder of the molecule, a 5-membered or 6-membered ring,

and
(iii) water;
wherein the composition is in the form of a shaped body with a storage modulus of between 10 3 Pa and 10 8 Pa and a loss modulus (at 20° C., with a deformation of 0.1% and a frequency of 1 Hz), and the storage modulus in the frequency range between 10 −2 Hz and 10 Hz is at least twice as great as the loss modulus.

2. The composition according to claim 1 wherein it comprises at least one anionic surfactant.

3. The composition according to claim 2 , wherein at least one anionic surfactant selected from the group consisting of C 8-18 alkylbenzene sulfonates, olefin sulfonates, C 12-18 alkane sulfonates, ester sulfonates, alkyl sulfates, alkenyl sulfates, fatty alcohol ether sulfates, and mixtures thereof.

4. The composition according to claim 1 , wherein it comprises at least one non-ionic surfactant.

5. The composition according to claim 1 , wherein it comprises at least one non-ionic surfactant of formula (T2) as the surfactant
R 2 —O—(XO) m —H,  (T2)

in which
R 2 represents a linear or branched C 8 -C 18 alkyl functional group, an aryl functional group or alkylaryl functional group,
XO represents, independently of one another, an ethylene oxide (EO) or propylene oxide (PO) group,
m represents an integer from 1 to 50.

6. The composition according to claim 1 , wherein the alditol backbone according to formula (I) is derived from D-glucitol, D-mannitol, D-arabinitol, D-ribitol, D-xylitol, L-glucitol, L-mannitol, L-arabinitol, L-ribitol, or L-xylitol.

7. The composition according to claim 1 , wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 mean, independently of one another, a hydrogen atom, methyl, ethyl, chlorine, fluorine, or methoxy.

8. The composition according to claim 1 , wherein it comprises, as a benzylidene alditol compound of formula (I), at least one compound of formula (I-1)

9. The composition according to claim 1 , wherein the benzylidene alditol compound of formula (I) is selected from 1,3:2,4-di-O-benzylidene-D-sorbitol; 1,3:2,4-di-O-(p-methylbenzylidene)-D-sorbitol; 1,3:2,4-di-O-(p-chlorobenzylidene)-D-sorbitol; 1,3:2,4-di-O-(2,4-dimethylbenzylidene)-D-sorbitol; 1,3:2,4-di-O-(p-ethylbenzylidene)-D-sorbitol; 1,3:2,4-di-O-(3,4-dimethylbenzyliden)-D-sorbitol, or mixtures thereof.

10. The composition according to claim 1 , wherein the amount of water is between 4 and 20 wt. %.

11. The composition according to claim 1 , wherein it additionally comprises at least one organic solvent having at least one hydroxyl group, no amino group and having a molecular weight of at most 500 g/mol selected from (C 2 -C 8 ) alkanols having at least one hydroxyl group, triethylene glycol, butyl diglycol, polyethylene glycols having a weight-average molar mass M w of at most 500 g/mol, glycerol carbonate, propylene carbonate, 1-methoxy-2-propanol, 3-methoxy-3-methyl-1-butanol, butyl lactate, 2-isobutyl-2-methyl-4-hydroxymethyl-1,3-dioxolane, 2,2-dimethyl-4-hydroxymethyl-1,3-dioxolane, dipropylene glycol, or mixtures thereof.

12. The composition according to claim 11 , wherein the amount of organic solvent is from 5 to 40 wt. %.

13. The composition according to claim 1 , wherein the storage modulus is in a range from 10 5 Pa to 10 7 Pa.

14. A method for treating textiles, comprising the method steps of
(a) providing an aqueous liquor by mixing 0.5 L to 40.0 L water with 0.5 to 100 g of a composition according to claim 1 , and
(b) bringing at least one textile into contact with the aqueous liquor produced according to (a).

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Schmiedel Peter
• Yapici Filiz
• Torun Boray
• Klemmer Anna
• Dreja Michael

Classifications

• C11D1/72

  Ethers of polyoxyalkylene glycols · CPC title

• C11D17/006

  containing mainly surfactants, but no builders, e.g. syndet bar · CPC title

• C11D1/26

  derived from heterocyclic compounds · CPC title

• C11D3/221 Primary

  Mono, di- or trisaccharides or derivatives thereof · CPC title

• C11D3/2068 Primary

  Ethers · CPC title