Fiber substrate with antibacterial finish and methods of making and using the same
View Patent ↗Treated fiber substrates and methods of making and using the same are disclosed. The disclosed treated fiber substrates provide persistent, durable, broad spectrum, antimicrobial activity. The treated fiber substrates may be used in a variety of materials to impart antimicrobial activity thereto.
1. A treated fiber substrate having a surface, wherein at least a portion of the surface is treated with a finish, wherein the finish comprises at least one antimicrobial composition comprising a metal complexed with a polymer, wherein the metal is selected from copper, silver, gold, tin, zinc and combinations thereof; and, wherein the polymer comprises monomer residues selected from residue A, residue B, residue C and combinations thereof; with the proviso that the polymer contains no more than 99.5 wt % of monomer residues of residue B;
wherein residue A is
wherein residue B is
wherein residue C is
wherein
X is an unsaturated or aromatic heterocycle having at least one hetero atom selected from N, O and S;
c is 0 or 1;
R 1 is selected from H, CH 3 and —CO 2 R 4 ; where R 4 is selected from H, CH 3 , C 2 H 5 , a C 3 -C 24 alkyl;
R 2 is selected from H, CH 3 , C 2 H 5 , phenyl, —CH 2 CO 2 R 5 and —CO 2 R 5 ; where R 5 is selected from (I)-(V),
where R 11 is selected from H, methyl and phenyl; n is an integer from 1 to 20; Y is selected from OH, SO 3 Z and X; where Z is selected from H, sodium, potassium and NH 4 + ; with the proviso that when the polymer contains 0 wt % of monomer residues of residue B and 0 wt % of monomer residues of residue C, R 2 is —CH 2 CO 2 R 5 or —CO 2 R 5 , R 5 is (V) and Y is X;
R 3 is selected from H, methyl, phenyl, sulfonated phenyl, phenol, acetate, hydroxy, a fragment O—R 1 , where R 1 is as defined previously, —CO 2 R 12 and —CONR 6 R 7 ; where R 6 and R 7 are independently selected from H, methyl, ethyl, C(CH 3 ) 2 CH 2 SO 3 Z, where Z is as defined previously, C 3 -C 8 alkyl and a combined ring structure and R 12 is selected from H, CH 3 , C 2 H 5 and C 3 -C 24 alkyl;
R 8 and R 9 are independently selected from hydrogen, methyl, ethyl and C 3 -C 4 alkyl;
R 10 is selected from C 1 -C 8 alkyl, C 2 -C 8 alkenyl, C 6 -C 10 unsaturated acyclic, C 6 -C 10 cyclic, C 6 -C 10 aromatic, C 2 -C 4 alkylene oxide and poly (C 2 -C 4 alkylene) b oxides; where b is an integer from 2 to 20.
2. The treated fiber substrate of claim 1 , wherein the metal is silver.
3. The treated fiber substrate of claim 2 , wherein the finish is non-electrically conductive.
4. The treated fiber substrate of claim 1 , wherein the finish further comprises at least one binder material.
5. The treated fiber substrate of claim 1 , wherein the treated fiber substrate exhibits a log kill rate for Staphylococcus aureus after 24 hour exposure in accordance with AATCC Test Method 100-1993 of at least 1.5, wherein said log kill rate is measured after at least 3 washes, wherein the washes are performed in accordance with the wash procedure as part of a modified AATCC Test Method 124-2001.
6. The treated fiber substrate of claim 1 , wherein the treated fiber retains at least 50 wt % of the initial applied metal concentration after being subjected to 3 washes, wherein the washes are performed in accordance with the wash procedure set forth in AATCC Test Method 124-2001.
7. A material made using the treated fiber substrate of claim 1 , wherein the material is selected from apparel, apparel interlining, upholstery, carpeting, padding, ceiling tiles, acoustical tiles, backing, wall coverings, roofing products, house wraps, insulation, bedding, wiping cloths, towels, gloves, rugs, floor mats, drapery, napery, textile bags, awnings, vehicle covers, boat covers, tents, agricultural coverings, geotextiles, automotive headliners, filtration media, dust masks, fiber fill, envelopes, tags, labels, diapers, feminine hygiene products, laundry aids, wound care products and medical care products.
8. A process for producing a treated fiber substrate comprising:
providing a fiber substrate;
providing a finish comprising at least one antimicrobial compound comprising a metal complexed with a polymer; wherein the metal is selected from copper, silver, gold, tin, zinc and combinations thereof; and, wherein the polymer comprises monomer residues selected from residue A, residue B, residue C and combinations thereof; with the proviso that the polymer contains no more than 99.5 wt % of monomer residues of residue B;
wherein residue A is
wherein residue B is
wherein residue C is
wherein
X is an unsaturated or aromatic heterocycle having at least one hetero atom selected from N, O and S;
c is 0 or 1;
R 1 is selected from H, CH 3 and —CO 2 R 4 ; where R 4 is selected from H, CH 3 , C 2 H 5 , a C 3 -C 24 alkyl;
R 2 is selected from H, CH 3 , C 2 H 5 , phenyl, —CH 2 CO 2 R 5 and —CO 2 R 5 ; where R 5 is selected from (I)-(V),
where R 11 is selected from H, methyl and phenyl; n is an integer from 1 to 20; Y is selected from OH, SO 3 Z and X; where Z is selected from H, sodium, potassium and NH 4 + ; with the proviso that when the polymer contains 0 wt % of monomer residues of residue B and 0 wt % of monomer residues of residue C, R 2 is —CH 2 CO 2 R 5 or —CO 2 R 5 , R 5 is (V) and Y is X;
R 3 is selected from H, methyl, phenyl, sulfonated phenyl, phenol, acetate, hydroxy, a fragment O—R 1 , where R 1 is as defined previously, —CO 2 R 12 and —CONR 6 R 7 ; where R 6 and R 7 are independently selected from H, methyl, ethyl, C(CH 3 ) 2 CH 2 SO 3 Z, where Z is as defined previously, C 3 -C 8 alkyl and a combined ring structure and R 12 is selected from H, CH 3 , C 2 H 5 and C 3 -C 24 alkyl;
R 8 and R 9 are independently selected from hydrogen, methyl, ethyl and C 3 -C 4 alkyl;
R 10 is selected from C 1 -C 8 alkyl, C 2 -C 8 alkenyl, C 6 -C 10 unsaturated acyclic, C 6 -C 10 cyclic, C 6 -C 10 aromatic, C 2 -C 4 alkylene oxide and poly (C 2 -C 4 alkylene) b oxides; where b is an integer from 2 to 20; and,
applying the finish to at least a portion of a surface of the fiber substrate;
optionally, providing a binder material;
optionally, applying the binder material to at least a portion of the surface of the fiber substrate; and,
optionally, drying the treated fiber substrate.
9. A process for producing a treated fiber substrate comprising:
providing a fiber substrate;
providing a finish comprising at least one antimicrobial compound comprising silver complexed with a polymer; wherein the polymer comprises monomer residues selected from residue A, residue B, residue C and combinations thereof; with the proviso that the polymer contains no more than 99.5 wt % of monomer residues of residue B;
wherein residue A is
wherein residue B is
wherein residue C is
wherein
X is an unsaturated or aromatic heterocycle having at least one hetero atom selected from N, O and S;
c is 0 or 1;
R 1 is selected from H, CH 3 and —CO 2 R 4 ; where R 4 is selected from H, CH 3 , C 2 H 5 , a C 3 -C 24 alkyl;
R 2 is selected from H, CH 3 , C 2 H 5 , phenyl, —CH 2 CO 2 R 5 and —CO 2 R 5 ; where R 5 is selected from (I)-(V),
where R 11 is selected from H, methyl and phenyl; n is an integer from 1 to 20; Y is selected from OH, SO 3 Z and X; where Z is selected from H, sodium, potassium and NH 4 + ; with the proviso that when the polymer contains 0 wt % of monomer residues of residue B and 0 wt % of monomer residues of residue C, R 2 is —CH 2 CO 2 R 5 or —CO 2 R 5 , R 5 is (V) and Y is X;
R 3 is selected from H, methyl, phenyl, sulfonated phenyl, phenol, acetate, hydroxy, a fragment O—R 1 , where R 1 is as defined previously, —CO 2 R 12 and —CONR 6 R 7 ; where R 6 and R 7 are independently selected from H, methyl, ethyl, C(CH 3 ) 2 CH 2 SO 3 Z, where Z is as defined previously, C 3 -C 8 alkyl and a combined ring structure and R 12 is selected from H, CH 3 , C 2 H 5 and C 3 -C 24 alkyl;
R 8 and R 9 are independently selected from hydrogen, methyl, ethyl and C 3 -C 4 alkyl;
R 10 is selected from C 1 -C 8 alkyl, C 2 -C 8 alkenyl, C 6 -C 10 unsaturated acyclic, C 6 -C 10 cyclic, C 6 -C 10 aromatic, C 2 -C 4 alkylene oxide and poly (C 2 -C 4 alkylene) b oxides; where b is an integer from 2 to 20;
applying the finish to at least a portion of a surface of the fiber substrate;
optionally, providing a binder material;
optionally, applying the binder material to at least a portion of the surface of the fiber substrate; and,
optionally, drying the treated fiber substrate.
10. The process of claim 9 , wherein the fiber substrate is selected from fibers, yarns and fabrics.
11. The treated fiber substrate of claim 1 , wherein the polymer comprises a heterocyclic containing monomer and a non-heterocyclic containing monomer, and wherein the composition is light stable.
12. The treated fiber substrate of claim 11 , wherein the metal is silver.
13. The treated fiber substrate of claim 12 , wherein the finish is non-electrically conductive.
14. The treated fiber substrate of claim 11 , wherein the finish further comprises at least one binder material.
15. The treated fiber substrate of claim 1 , wherein the polymer comprises a copolymer of a heterocyclic containing monomer and a non-heterocyclic containing monomer, wherein the heterocyclic containing monomer is vinylimidazole and the non-heterocyclic containing monomer is butyl acrylate and wherein the ratio of the heterocyclic containing monomer to the non-heterocyclic containing monomer is between 95:5 to 5:95.
16. The treated fiber substrate of claim 11 , wherein the treated fiber substrate exhibits a log kill rate for Staphylococcus aureus after 24 hour exposure in accordance with AATCC Test Method 100-1993 of at least 1.5, wherein said log kill rate is measured after at least 3 washes, wherein the washes are performed in accordance with the wash procedure as part of a modified AATCC Test Method 124-2001.
17. The treated fiber substrate of claim 11 , wherein the treated fiber retains at least 50 wt % of the initial applied metal concentration after being subjected to 3 washes, wherein the washes are performed in accordance with the wash procedure set forth in AATCC Test Method 124-2001.
18. A material comprising the treated fiber substrate of claim 11 , wherein the material is selected from apparel, apparel interlining, upholstery, carpeting, padding, ceiling tiles, acoustical tiles, backing, wall coverings, roofing products, house wraps, insulation, bedding, wiping cloths, towels, gloves, rugs, floor mats, drapery, napery, textile bags, awnings, vehicle covers, boat covers, tents, agricultural coverings, geotextiles, automotive headliners, filtration media, dust masks, fiber fill, envelopes, tags, labels, diapers, feminine hygiene products, laundry aids, wound care products and medical care products.
19. The process of claim 9 , wherein the polymer comprises a heterocyclic containing monomer and a non-heterocyclic containing monomer, and wherein the composition is light stable.