Antibacterial resin composition

{
  "publication_number": "US5614568A",
  "country": "US",
  "kind": "A",
  "title": "Antibacterial resin composition",
  "abstract": "An antibacterial resin composition comprising (A) 100 parts by weight of a styrene resin, (B) 0.01 to 30 parts by weight of an antibacterial agent and (C) 0.01 to 30 parts by weight of a compound having a specific functional group, and said antibacterial resin composition is excellent in antibacterial property and surface appearance of molded article and can give a molded article which can be applied to many fields.",
  "claims": [
    "1. An antibacterial resin composition which comprises (A) 100 parts by weight of an aromatic alkenyl resin; (B) 0.01 to 30 parts by weight of an inorganic metal compound or a porous structure substrate which has been subjected to ion-exchange with a metal ion, wherein said metal is selected from the group consisting of silver, copper, zinc, mercury, tin, lead, bismuth, cadmium, chromium, cobalt, nickel, iron, manganese, arsenic, antimony and barium; and (C) 0.01 to 30 parts by weight of a polyethylene comprising a functional group selected from the group consisting of carboxyl group, a salt of said carboxyl group, hydroxyl group, oxazoline group, acid anhydride group, ester group, epoxy group and amino group, a polypropylene comprising a functional group selected from the group consisting of carboxyl group, a salt of said carboxyl group, hydroxyl group, oxazoline group, acid anhydride group, ester group, epoxy group and amino group or a compound comprising a functional group selected from the group consisting of carboxyl group, a salt of said carboxyl group, hydroxyl group, oxazoline group, acid anhydride group, ester group, epoxy group and amino group having a long chain alkyl group containing at least 20 carbon atoms, wherein said component (C) has a molecular weight of 300 to 10,000.",
    "2. The antibacterial resin composition according to claim 1, wherein said inorganic metal compound comprises a metal selected from the group consisting of silver, copper and zinc and wherein said metal ion is an ion of a metal selected from the group consisting of silver, copper and zinc.",
    "3. The antibacterial resin composition according to claim 1, wherein said inorganic metal compound is a silver compound selected from the group consisting of colloidal silver, silver oxide, silver phosphate, silver carbonate, silver iodate, silver pyrophosphate, silver citrate, silver tungstate and silver chloride.",
    "4. The antibacterial resin composition according to claim 1, wherein said inorganic metal compound is a salt of a compound selected from the group consisting of alkyl, phenyl and alkylphenyl phosphates and phosphites.",
    "5. The antibacterial resin composition according to claim 1, wherein said substrate is silica gel, activated carbon, zeolite, zirconium phosphate, or hydroxyapatite.",
    "6. The antibacterial resin composition according to claim 1, wherein said functional group is selected from the group consisting of carboxyl group, a salt of said carboxyl group, hydroxyl group, oxazoline group, acid anhydride group, ester group, epoxy group, and amino group.",
    "7. The antibacterial resin composition according to claim 1, wherein said functional group is selected from the group consisting of carboxyl group, a salt of said carboxyl group, acid anhydride group and epoxy group.",
    "8. The antibacterial resin composition according to claim 7, wherein said salt of said carboxyl group is a metal salt wherein said metal is selected from the group consisting of sodium, potassium, lithium, calcium, magnesium, aluminum, zinc and tin.",
    "9. The antibacterial resin composition according to claim 1, wherein component (C) is a montanic acid salt.",
    "10. The antibacterial resin composition according to claim 1, wherein said component (A) is polymerized in the presence of a first part or the whole of said component (B) and thereafter, mixed with said component (C) and thereafter, mixed with a remaining part of said component (B) wherein when said component (A) is polymerized with said first part of said component (B).",
    "11. The antibacterial resin composition of claim 1, wherein said substrate is selected from the group consisting of silica gel, activated carbon, zeolite, zirconium phosphate, hydroxyapatite and glass.",
    "12. The antibacterial resin composition according to claim 1, wherein said aromatic alkenyl resin (A) is a polymer resin obtained by polymerizing a monomeric component, said monomeric component consisting of an aromatic alkenyl compound alone or in admixture with at least one other monomer copolymerizable therewith.",
    "13. The antibacterial resin composition according to claim 1, wherein said aromatic alkenyl resin (A) is a graft polymer resin obtained by graft polymerizing (b) 30 to 95% by weight, based on the weight of said aromatic alkenyl resin (A), of a monomeric component consisting of an aromatic alkenyl compound alone or in admixture with at least one other monomer copolymerizable therewith in the presence of (a) 5 to 70% by weight, based on the weight of said aromatic alkenykl resin (A), of a rubbery polymer, wherein the total weight of (a) and (b) is 100%.",
    "14. The antibacterial resin composition according to claim 1, wherein said aromatic alkenyl resin (A) is a resin blend of a thermoplastic resin obtained by polymerizing a monomeric component (b) consisting of an aromatic alkenyl compound alone or in admixture with at least one other monomer copolymerizable therewith and a graft polymer resin obtained by graft polymerizing (b) 30 to 95% by weight, based on the weight of said aromatic alkenyl resin (A), of a monomeric component consisting of an aromatic alkenyl compound alone or in admixture with at least one other monomer copolymerizable therewith in the presence of (a) 5 to 70% by weight, based on the weight of said aromatic alkenyl resin (A), of a rubbery polymer, wherein the total weight of (a) and (b) is 100%.",
    "15. The antibacterial resin composition according to claim 1, wherein said aromatic alkenyl resin (A) is a blend of a rubbery polymer (a) and a thermoplastic resin; wherein said thermoplastic resin is obtained by polymerizing a monomeric component, said monomeric component consisting of an aromatic alkenyl compound alone or in admixture with at least one other monomer copolymerizable therewith.",
    "16. The antibacterial resin composition of claim 13, wherein a grafting degree of said graft polymer resin is 10 to 200% by weight, based on the weight of said graft polymer resin.",
    "17. The antibacterial resin composition of claim 11, wherein said component (B) is zeolite or zirconium phosphate which has been subjected to ion-exchange with a metal ion, wherein said metal ion is an ion of a metal selected from the group consisting of silver, copper, mercury, tin, lead, bismuth, cadmium, cobalt, nickel, iron, manganese, arsenic, antimony and barium.",
    "18. The antibacterial resin composition of claim 17, wherein said metal ion is silver ion.",
    "19. The antibacterial resin composition of claim 17, wherein said component (B) is zeolite which has been subjected to ion-exchange with a metal ion, wherein said metal ion is an ion of a metal selected from the group consisting of silver, copper, mercury, tin, lead, bismuth, cadmium, cobalt, nickel, iron, manganese, arsenic, antimony or barium.",
    "20. The antibacterial resin composition of claim 19, wherein said metal ion is silver ion.",
    "21. The antibacterial resin composition of claim 13, wherein said substrate is glass having dispersed therein silver oxide.",
    "22. The antibacterial resin composition according to claim 13, wherein said aromatic alkenyl compound is at least one member selected from the group consisting of styrene, t-butylstyrene, α-methylstyrene, p-methylstyrene, divinylbenzene, 1,1-diphenylstyrene, N,N-diethyl-p-aminoethylstyrene, N,N-diethyl-p-aminomethylstyrene, vinylxylene, monochlorostyrene, dichlorostyrene, monobromostyrene, fluorostyrene, and ethylstyrene.",
    "23. The antibacterial resin composition according to claim 13, wherein said other monomer is selected from the group consisting of alkenyl cyanides, acrylic acid esters, methacrylic acid esters, unsaturated acid anhydrides, α- or β-unsaturated dicarboxylic acid imide compounds, epoxy compounds, unsaturated carboxylic acid amides, amino group-containing unsaturated compounds, hydroxyl group-containing unsaturated compounds and oxazoline group-containing unsaturated compounds.",
    "24. The antibacterial resin composition according to claim 13, wherein said rubbery polymer (a) is at least one member selected from the group consisting of polybutadiene, polyisoprene, styrene-butadiene copolymer, styrene-isoprene copolymer, acrylonitrile-butadiene copolymer, ethylene-α-olefin copolymer, ethylene-α-olefin-polyene copolymer, acrylic rubber, butadiene(meth) acrylate copolymer, styrene-butadiene block copolymer, styrene-isoprene block copolymer, hydrogenated butadiene copolymer and ethylenic ionomer."
  ],
  "description_excerpt": "This application is a Continuation of application Ser. No. 08/171,151, filed on Dec. 22, 1993, now abandoned.\n\nThis invention relates to an antibacterial resin composition comprising mainly a styrene resin excellent in antibacterial property and surface appearance of molded article.\n\nSince styrene resins such as ABS resin and the like are excellent in surface appearance of molded article, processability on molding equipment, physical properties and mechanical properties, they have been used in many fields such as electrical and electronic fields; fields of office automation and appliances; automobile field; sanitary field, for example, lavatory seat, kitchenware and bathroom fittings; sundry goods; etc.\n\nRecently, the breeding of bacteria in goods used in these fields, for example, in the interior of air-conditioner becomes a problem because it adversely affects human body. Styrene resins are often used in goods in which bacteria tend to grow, and hence, it has been desired to impart antibacterial and fungicidal properties to the styrene resins. In order to impart antibacterial and fungicidal properties to styrene resins, a method by which commercially available antibacterial and fungicidal agents are incorporated into the styrene resins has been used; however, satisfactory antibacterial property has not been imparted to the styrene resins by the method.\n\nThis invention aims at solving the above problems of prior art and providing an antibacterial resin composition which is excellent in antibacterial property and surface appearance of molded article and can be used in many fields.",
  "cpc": [
    "C08K 5/0058",
    "C08K 3/015",
    "C08L 55/02"
  ],
  "ipc": [
    "C08K 3/00",
    "C08K 5/00"
  ],
  "assignees": [
    "Japan Synthetic Rubber Co Ltd"
  ],
  "inventors": [
    "Masaaki Mawatari",
    "Chie Hamazaki",
    "Tateki Furuyama"
  ],
  "filing_date": "1995-05-22",
  "publication_date": "1997-03-25",
  "grant_date": "1997-03-25",
  "priority_date": "1992-12-25",
  "application_number": "US-44630495-A",
  "family_id": "18458911",
  "cited_by_count": 127,
  "citations": [
    "US4254028A",
    "EP0288063B1",
    "US5229446A",
    "JPH03181538A",
    "EP0444939A1"
  ]
}