Process

Patent metadata

Field	Value
Publication number	US-12496566-B2
Application number	US-202117789585-A
Country	US
Kind code	B2
Filing date	Jan 20, 2021
Priority date	Jan 29, 2020
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A method of covalently bonding a modifier to a polymeric microcapsule wall, which wall comprises entities capable of reaction with acrylic moieties, comprising the provision on the wall of a linking compound to which the modifier is subsequently attached, the linking compound having the Formula I

in which
n=1 to 30; R 1 , R 2 and R 3 are independently selected from the following moieties:
R 1 and R 3 are H and Me; and
X is selected from O and NH; and
R 2 is selected from CH 2 , CH 2 CH(OH)CH 2 , and CH 2 ·CH 2 .

Microcapsules thus modified exhibit enhanced substantivity to substrates such as textiles when used in laundry preparations.

First claim

The invention claimed is:

1 . A method of covalently bonding a modifier to a polymeric microcapsule wall, which wall comprises entities capable of reaction with acrylic moieties, comprising: providing on the wall a linking compound to which the modifier is subsequently bound, the linking compound having the Formula I

in which
n=1 to 30;
R 1 , R 2 and R 3 are independently selected from the following moieties:
R 1 and R 3 are H or Me; and
X is selected from O and NH; and
R 2 is selected from CH 2 , CH 2 CH(OH)CH 2 , and CH 2 ·CH 2 .

2 . The method of claim 1 , in which n is selected from the group consisting of 1-23, 1-20, 1-15, 1-10, or 1-5.

3 . The method of claim 1 , in which the linking compound is a compound with an acrylate moiety (CH 2 =CH·COO—) at one end and a methacrylate entity (CH 2 ═C(CH 3 )·COO—) at the other end.

4 . The method of claim 1 , in which R 1 and R 3 are both H or both CH 3 and X is O.

5 . The method of claim 1 , in which the linking compound is a compound selected from the group consisting of compounds of Formula II or Formula III:

6 . The method of claim 5 , in which the linking compound is 3-(acryloyloxy)-2-hydroxypropyl methycrylate.

7 . The method of claim 1 , in which the polymeric microcapsule wall comprises amine groups.

8 . The method of claim 7 , in which the polymeric material of the microcapsule wall is selected from the group consisting of aminoplasts, urea- and melamine-formaldehyde resins, and polyurea.

9 . The method of claim 1 , in which the modifier is selected from at least one polysaccharide.

10 . The method of claim 9 , in which the polysaccharide is selected from the group consisting of mannan, glucan, glucomannan, xyloglucan, hydroxyalkyl cellulose, dextran, galactomannan, or mixtures thereof.

11 . The method of claim 1 , in which the microcapsules contain fragrance.

12 . Microcapsules prepared by the method of claim 1 .

13 . A treatment preparation, comprising microcapsules according to claim 12 .

14 . A method of enhancing the substantivity to a substrate of microcapsules applied to the substrate as part of a treatment preparation, the microcapsules being prepared according to the method of claim 1 .

15 . The method of claim 14 , in which the treatment preparation is a laundry product and the microcapsules contain fragrance.

16 . The treatment preparation of claim 13 , which is a laundry preparation.

Assignees

• Givaudan Sa

Inventors

• Bocokic Vladica
• Riflade Benoit

Classifications

• C11D2111/12

  Soft surfaces, e.g. textile · CPC title

• C11D3/505

  encapsulated or adsorbed on a carrier, e.g. zeolite or clay · CPC title

• B01J13/22 Primary

  Coating · CPC title

• B01J13/14 Primary

  Polymerisation; cross-linking · CPC title