Launderable bactericidal and virucidal fabric finish

Patent metadata

Field	Value
Publication number	US-11856953-B2
Application number	US-202217692193-A
Country	US
Kind code	B2
Filing date	Mar 11, 2022
Priority date	Mar 11, 2021
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A launderable bactericidal and virucidal fabric finish formulation. The first component is a bactericidal and virucidal agent represented by formula (I):

wherein n is 7; R 1 , R 2 , and R 3 are jointly or independently selected from H or one of the following groups:

wherein R 4 is selected from CH 3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10. A second component includes one or more crosslinkers and/or one or more catalysts. A third component includes one or more transition metal salts.

First claim

The invention claimed is:

1. A kit for a launderable bactericidal and virucidal fabric finish formulation for home laundry comprising:
a first component having a bactericidal and virucidal agent represented by formula (I):

wherein n is 7; R 1 , R 2 , and R 3 is jointly or independently selected from H or one of the following groups:

wherein R 4 is selected from CH 3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10; and

a second component comprising:
one or more crosslinkers; and/or
one or more catalysts;

a third component comprising one or more transition metal salts;
wherein at least one of R1, R2 or R3 is selected from the group (II), (III), (IV), (V), (VI) or (VII), and wherein the kit demonstrates bactericidal and virucidal activity as a fabric finish.

2. The kit of claim 1 , wherein the one or more crosslinkers are selected from citric acid, tricarballylic acid, 1,2,3,4-butanetetracarboxylic acid, 1,2,4,5-benzenetetracarboxylic acid, cis,cis,cis,cis-1,2,3,4-cyclopentanetetracarboxylic acid, 1,3,5-cyclohexanetricarboxylic acid, 1,2,3,4,5,6-cyclohexanehexacarboxylic acid, and ethylenediaminetetraacetic acid.

3. The kit of claim 1 , wherein the one or more catalysts are selected from sodium dihydrogen phosphate, sodium hydrogen phosphate, sodium phosphate, ammonium dihydrogen phosphate, sodium hypophosphite, cyanamide, dicyandiamide, sodium hydrogen cyanamide, disodium cyanamide, and sodium hydroxide.

4. The kit of claim 1 , wherein the one or more transition metal salts comprise one or more of zinc acetate, zinc acetate dihydrate, zinc gluconate, copper(II) acetate, copper(II) acetate hydrate, and copper(II) gluconate.

5. A method of preparing a launderable bactericidal and virucidal fabric comprising:
providing a first solution comprising a first and a second component at a liquor ratio of approximately 1:4 to 1:40 wherein the first component comprises a bactericidal and virucidal agent represented by formula (I):

wherein n is 7; R 1 , R 2 , and R 3 is jointly or independently selected from H or one of the following groups:

wherein R 4 is selected from CH 3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10; and
wherein a second component comprises:
one or more crosslinkers; and/or
one or more catalysts;

dip-coating a fabric in the first solution;
drying and/or curing the dip-coated fabric;
providing a second solution comprising a third component at a liquor ratio of 1:4 to 1:40, wherein the third component is one or more transition metal salts;
dip-coating the fabric in the second solution;
wherein at least one of R1, R2 or R3 is selected from the group (II), (III), (IV), (V), (VI) or (VII), and wherein treated fabric demonstrates bactericidal and virucidal activity.

6. The method of claim 5 , wherein the liquor ratio is 1:34 for the first or second solution.

7. The method of claim 5 , wherein the liquor ratio is 1:5 for the first or second solution.

8. The method of claim 5 wherein the dip-coating in the first or second solution is for about 5 to 60 minutes at about 25 to 80° C.

9. The method of claim 5 , where the drying and/or curing following the dip-coating in the first solution is at about 60 to 180° C. for about 5 to 60 minutes;
after drying and/or curing said dip-coated fabric, washing the fabric with water and then tumble drying the washed fabric for about 30 to 60 minutes at about 60 to 90° C.

10. The method of claim 5 , further comprising drying and/or curing the dip-coated fabric at about 60 to 180° C. for about 5 to 60 minutes following dip-coating in the second solution;
after drying and/or curing said dip-coated fabric, washing the fabric with water and then tumble drying the washed fabric for about 30 to 60 minutes at about 60 to 90° C.

11. A fabric comprising a launderable bactericidal and virucidal fabric finish prepared by the method according to claim 5 having bactericidal and virucidal activity of at least 90%, and/or deodorizing performance of at least 90%.

12. The fabric of claim 11 , wherein the fabric has an increment in coating weight of 6.5 to 54.0 g/m 2 .

13. A kit for a launderable bactericidal and virucidal fabric finish formulation comprising:
a first component having a bactericidal and virucidal agent represented by formula (I):

wherein n is 7; R 1 , R 2 , and R 3 are jointly or independently selected from H or one of the following groups:

wherein R 4 is selected from CH 3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10; and

a second component comprising:
one or more crosslinkers; and/or
one or more catalysts;

wherein at least one of R1, R2 or R3 is selected from the group (II), (III), (IV), (V), (VI) or (VII), and wherein the kit demonstrates bactericidal and virucidal activity as a fabric finish.

14. A method of preparing a launderable bactericidal and virucidal fabric comprising:
providing a first solution comprising first and second components at a liquor ratio of approximately 1:4 to 1:40;
wherein the first component comprises a bactericidal and virucidal agent represented by formula (I):

wherein n is 7; R 1 , R 2 , and R 3 is jointly or independently selected from H or one of the following groups:

wherein R 4 is selected from CH 3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10; and
wherein a second component comprises:
one or more crosslinkers; and/or
one or more catalysts;

dip-coating a fabric in the first solution;
drying and/or curing the dip-coated fabric;
wherein at least one of R1, R2 or R3 is selected from group (II), (III), (IV), (V), (VI) or (VII), and wherein treated fabric demonstrates bactericidal and virucidal activity.

Assignees

• Nano & Advanced Materials Inst Ltd

Inventors

• O Wing Nien Wylie
• Yui Tsz Hin
• Leung Chi Yin
• Leung Chun Sing
• Yeung Ka Yim

Classifications

• A01N37/20 Primary

  containing the group [IMAGE cpc-sch-A01N-0935.gif], wherein Cn means a carbon skeleton not containing a ring; Thio analogues thereof · CPC title

• A01N25/34

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A01P1/00

  Disinfectants; Antimicrobial compounds or mixtures thereof · CPC title

• D06B3/10

  of fabrics (D06B3/24, D06B3/28, D06B3/32 take precedence; jiggers D06B3/32) · CPC title

• D06B21/00

  Successive treatments of textile materials by liquids, gases or vapours · CPC title