Fibrous web comprising a cationic polymer for capturing microorganisms
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-020/26
A01N-037/46
A01N-025/34
출원번호
US-0230783
(2014-03-31)
등록번호
US-9226502
(2016-01-05)
발명자
/ 주소
Korir-Morrison, Cindy
Hofmekler, Jonathan
Morales, Cesar Z.
Koenig, David William
Do, Bao Trong
출원인 / 주소
Kimberly-Clark Worldwide, Inc.
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
27
초록▼
A fibrous web that includes a cationic polymer that contains a cationic monomer comprising a cationic functional group having an affinity for the negatively charged cell walls of bacteria and a hydrophobic monomer comprising a hydrophobic functional group is provided. The molar ratio of the cationic
A fibrous web that includes a cationic polymer that contains a cationic monomer comprising a cationic functional group having an affinity for the negatively charged cell walls of bacteria and a hydrophobic monomer comprising a hydrophobic functional group is provided. The molar ratio of the cationic monomer to the hydrophobic monomer is greater than about 1:1. The affinity of the cationic polymer for the bacteria allows the web to capture bacteria, thereby removing them from a surface or liquid, without the use of harsh chemicals, and also inhibiting their spread to other surfaces and liquids that may contact the web.
대표청구항▼
1. A fibrous web for use in removing microorganisms, the web comprising a cationic polymer having an affinity for the negatively charged cell walls of bacteria, the cationic polymer comprising a cationic monomer and a hydrophobic monomer, wherein the molar ratio of the cationic monomer to the hydrop
1. A fibrous web for use in removing microorganisms, the web comprising a cationic polymer having an affinity for the negatively charged cell walls of bacteria, the cationic polymer comprising a cationic monomer and a hydrophobic monomer, wherein the molar ratio of the cationic monomer to the hydrophobic monomer is greater than about 1:1. 2. The fibrous web of claim 1, wherein the molar ratio of the cationic monomer to the hydrophobic monomer is from greater than about 1:1 to about 15:1. 3. The fibrous web of claim 1, wherein the cationic monomer comprises a protonated amine. 4. The fibrous web of claim 1, wherein the cationic monomer comprises an imidazolyl group, a pyridyl group, or a pyrazolyl group. 5. The fibrous web of claim 1, wherein the cationic monomer comprises an ammonium group. 6. The fibrous web of claim 1, wherein the hydrophobic monomer comprises a C5-C20 alkyl group, a C5-C20 alkylene group, an aryl group, or a heteroaryl group. 7. The fibrous web of claim 6, wherein the aryl group or heteroaryl group comprises a 6-membered aromatic carbon ring. 8. The fibrous web of claim 1, wherein the cationic monomer or hydrophobic monomer is an acrylamide monomer or a methacrylamide monomer. 9. The fibrous web of claim 1, wherein the cationic monomer or hydrophobic monomer is an acrylate ester monomer or a methacrylate ester monomer. 10. The fibrous web of claim 1, wherein a natural amino acid is used in the synthesis of the cationic polymer. 11. The fibrous web of claim 1, wherein an amino acid is used in the synthesis of the cationic monomer, the amino acid comprising arginine, lysine, histidine, or a combination thereof. 12. The fibrous web of claim 11, wherein the amino acid is lysine. 13. The fibrous web of claim 1, wherein an amino acid is used in the synthesis of the hydrophobic monomer, the amino acid comprising alanine, valine, isoleucine, leucine, methionine, phenylalanine, tyrosine, tryptophan, or a combination thereof. 14. The fibrous web of claim 13, wherein the amino acid is phenylalanine. 15. The fibrous web of claim 1, wherein the cationic monomer comprises a cationic functional group connected to a backbone of the cationic polymer by a first spacer, wherein the first spacer has a length of from about 3 Å to about 30 Å. 16. The fibrous web of claim 1, wherein the hydrophobic monomer comprises a hydrophobic functional group connected to a backbone of the cationic polymer by a second spacer, wherein the second spacer has a length of from about 2 Å to about 30 Å. 17. The fibrous web of claim 1, wherein the cationic polymer has the following structure: wherein: R1 and R2 are each independently hydrogen, a C1-C4 alkyl group, or a C1-C4 alkenyl group;R3 and R4 are each independently hydrogen, a hydroxyl group, a C1-C4 alkyl group, or a C1-C4 alkenyl group;R5 comprises a cationic functional group;R6 comprises a hydrophobic functional group;p is greater than 1;q is greater than 1;m and n are independently from 0 to 5; andv and w are independently from 0 to 5. 18. The fibrous web of claim 1, wherein the cationic polymer comprises an organic substituent having the following structure: wherein: X is an amide (—C(O)NH— or —NHC(O)—) or a carboxylic ester (—C(O)O— or —OC(O)—);R7 is a direct bond between the C and R8, a C1-C5 alkyl group, or a C1-C5 alkenyl group;R8 is an amino group having the structure —N(R13)(R14), an ammonium group having the structure —N(R15)(R16)(R17), a N containing heteroaryl group, or a N containing heterocyclyl group;R9 is hydrogen, a C1-C10 alkyl group, or a C1-C10 alkenyl group;R13 and R14 are each independently hydrogen, a C1-C5 alkyl group, a C1-C5 alkenyl group, or —C(NR18)N(R19)(R20);R15, R16, and R17 are each independently hydrogen, a C1-C5 alkyl group, a C1-C5 alkenyl group, or —C(NR18)N(R19)(R20), wherein at least one of R15, R16, or R17 is hydrogen; andR18, R19, and R20 are each independently hydrogen, a C1-C5 alkyl group, or a C1-C5 alkenyl group. 19. The fibrous web of claim 18, wherein R8 is an amino group having the structure —N(R13)(R14). 20. The fibrous web of claim 19, wherein R13 and R14 are hydrogen. 21. The fibrous web of claim 18, wherein R8 is an ammonium group having the structure —N(R15)(R16)(R17), wherein R15, R16, and R17 are hydrogen. 22. The fibrous web of claim 18, wherein R9 is hydrogen or a C1-C3 alkyl group. 23. The fibrous web of claim 1, wherein the cationic polymer comprises an organic substituent having the following structure: wherein: Y is an amide (—C(O)NH— or —NHC(O)—) or a carboxylic ester (—C(O)O— or —OC(O)—);R10 is hydrogen, a C1-C20 alkyl group, or a C1-C10 alkenyl group;R11 is a direct bond between the C and R12, a C1-C5 alkyl group, or a C1-C5 alkenyl group; andR12 is a C1-C20 alkyl group, a C2-C20 alkylene group, an aryl group, or a heteroaryl group. 24. The fibrous web of claim 23, wherein R12 is an aryl group. 25. The fibrous web of claim 23, wherein the aryl group is a phenyl group. 26. The fibrous web of claim 23, wherein R12 comprises a 6-membered aromatic carbon ring. 27. The fibrous web of claim 23, wherein R10 is hydrogen or a C1-C3 alkyl group. 28. The fibrous web of claim 1, wherein the web further comprises absorbent fibers. 29. The fibrous web of claim 1, wherein the web further comprises synthetic thermoplastic fibers. 30. The fibrous web of claim 1, wherein the web is a composite of absorbent fibers and synthetic thermoplastic fibers.
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