Softening composition

Patent metadata

Field	Value
Publication number	US-11753496-B2
Application number	US-201816762978-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Dec 19, 2017
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

The invention relates to the field involving the softening or lubricating of natural, synthetic or mixed textile fibres, as well as keratin fibres. The invention provides a softening composition, the rheology of which is controlled by means of a particular thickening agent. The invention also relates to the thickening agent, which is made from multiple isocyanate compounds.

First claim

The invention claimed is:

1. A thickening agent, comprising:
I. a compound prepared by reaction of compounds (A), (B), and (C), wherein said compounds (A), (B), and (C) are free of any diisocyanate compound, and wherein:
(A) is at least one monoisocyanate compound chosen from:
(A1) a compound comprising a single isocyanate group and (A2) at least one monoisocyanate compound from a separate reaction of (A2-1) at least one compound comprising a labile hydrogen atom and (A2-2) at least one asymmetric diisocyanate compound,

(B) is at least one isocyanate compound comprising more than 2 isocyanate groups, and
(C) is at least one compound of formula (I):
(HO)-L n -(OH)  (I)

wherein L independently represents a polyalkylene glycol residue and n represents a number ranging from 40 to 400; and
II. a solvent which is non-aromatic, non-reactive with the isocyanate group and at least one selected from the group consisting of a ketone, an ether, an aprotic ethyl derivative, a diether, a crown ether, an ester, a diester, a carbonate, a furan, a halogenated solvent, an alkane, an alkene, an alkyne, a nitrogenous or sulphurous solvent, a mineral oil and a silicone oil.

2. The thickening agent according to claim 1 , in which the compound (A1) is:
a compound of formula (II):
R—NCO  (II)

wherein R represents a straight, branched or cyclic saturated, unsaturated or aromatic hydrocarbon group; or
a compound selected from the group consisting of:
an aromatic monoisocyanate compound;
a polyfunctional aromatic monoisocyanate compound;
an alkyl monoisocyanate compound; and
a cycloalkyl monoisocyanate compound.

3. The thickening agent according to claim 2 , in which the compound (A1) is a compound of formula (II) wherein R represents:
a straight, branched, or cyclic saturated, unsaturated or aromatic hydrocarbon group comprising from 10 to 32 carbon atoms.

4. The thickening agent according to claim 1 , in which the at least one compound (A2-1) is selected from the group consisting of a compound comprising a labile hydrogen atom that is reactive with the asymmetric diisocyanate compound; a compound comprising at least one hydroxyl group; a compound comprising a primary amine group or a secondary amine group; a carboxylic acid; and a mercaptan compound.

5. The thickening agent according to claim 1 , in which the at least one asymmetric compound (A2-2) is selected from the group consisting of:
an asymmetric aromatic diisocyanate compound; and
an asymmetric alicyclic diisocyanate compound.

6. The thickening agent according to claim 1 , in which:
the at least one isocyanate compound (B) is an isocyanate compound comprising more than 2.2 isocyanate groups, the at least one isocyanate compound (B) is triphenylmethane-4,4′,4″-triisocyanate or 1,1′,1″-methylidynetris (4-isocyanatobenzene), the at least one isocyanate compound (B) is an isocyanurate compound, or the at least one isocyanate compound (B) is a biuret trimer compound.

7. The thickening agent according to claim 1 , in which the at least one compound (C) is a compound of formula (I) wherein:
L independently represents a polyethylene glycol residue; and/or
n represents a number ranging from 50 to 400.

8. The thickening agent according to claim 1 , in which the at least one compound (C) of formula (I) has a molecular mass (M W ) ranging from 1,500 to 20,000 g/mol.

9. The thickening agent according to claim 1 , in which a molar amount of the at least one monoisocyanate compound (A) is approximately twice as high as a molar amount of the at least one compound (C).

10. The thickening agent according to claim 1 , in which the solvent (II) is present when preparing the compound (I).

11. The thickening agent according to claim 1 , in which the solvent (II) is partially separated.

12. The thickening agent according to claim 1 , in which the solvent (II) is completely separated.

13. A softening composition, comprising:
the thickening agent according to claim 1 ,
a softening agent, and
optionally water.

14. The softening composition according to claim 13 , in which:
the softening agent is selected from the group consisting of a softening agent for textile, natural, synthetic or mixed fibres, and a softening agent for keratin fibre; or
the softening agent is a hydrophobic substance dispersed in an aqueous phase.

15. The softening composition according to claim 13 , in which the softening agent is
a compound comprising an ester group,
a compound comprising an amido-amine group,
a compound comprising an imidazoline group,
a compound comprising an amine group and at least one hydrocarbon fatty chain or
a cationic compound comprising an ammonium group and at least one hydrocarbon fatty chain.

16. A method for controlling the viscosity of a softening composition of claim 13 , the method comprising
adjusting the quantity of said thickening agent.

17. A method for lubricating textile, natural, synthetic or mixed fibres, or keratin fibres comprising implementing at least one thickening agent according to claim 1 .

Assignees

• Coatex Sas

Inventors

• Kensicher Yves
• Magny Benoit
• Matter Yves
• Suau Jean-Marc

Classifications

• C08G18/755 Primary

  and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate · CPC title

• C08G18/2825 Primary

  having at least 6 carbon atoms · CPC title

• A61Q5/12

  Preparations containing hair conditioners · CPC title

• A61K8/87

  Polyurethanes · CPC title

• C08G18/4833

  Polyethers containing oxyethylene units · CPC title