Water soluble containers for blends of surface cleaners and corrosion inhibitors

{
  "publication_number": "US6280528B1",
  "country": "US",
  "kind": "B1",
  "title": "Water soluble containers for blends of surface cleaners and corrosion inhibitors",
  "abstract": "An improved method and/or process for preparing and handling formulations useful in metal treatment baths which includes packaging formulations useful in preparing and/or replenishing aqueous-based baths in water soluble pouches or containers. The present invention includes the selection of components effective in treating metallic surfaces, which may be blended and effectively stored in containers or pouches consisting of polyvinylalcohol film. The present invention reduces the necessity or frequency of personal hand contact by workers with these blends.",
  "claims": [
    "1. A method of cleaning a surface of a metallic article and applying a corrosion inhibiting film thereto which includes subjecting the metallic article to an aqueous metal treatment bath, wherein said method comprises the steps of; (a) providing a surface cleaner detergent selected from the group consisting of sodium metasilicate and tetrapotassium pyrophosphate; (b) providing a corrosion inhibitor selected from the group consisting of sodium benzoate, sodium tolyltriazole, and benzotriazole; (c) blending said surface cleaner detergent and said corrosion inhibitor to form a powdered mixture; (d) loading said powdered mixture into a retainer pouch consisting of a water soluble polyvinylalcohol film; (e) placing said retainer pouch into an aqueous metal treatment bath; (f) dispersing and dissolving said powdered mixture of said surface cleaner detergent and said corrosion inhibitor into said aqueous metal treatment bath; and (g) cleaning said surface of said metallic article and applying a corrosion inhibiting film to said surface of said metallic article by immersing said metallic article into said aqueous metal treatment bath containing said surface cleaner detergent and said corrosion inhibitor.",
    "2. A method of cleaning the surface of a metallic article and applying a corrosion inhibiting film thereto which includes subjecting the metallic article to an aqueous metal treatment bath, wherein said method comprises the steps of: (a) providing a surface cleaner detergent consisting of sodium sulfonate; (b) providing a corrosion inhibitor selected from the group consisting of sodium benzoate and benzotriazole; (c) blending said surface cleaner detergent and said corrosion inhibitor to form a powdered mixture; (d) loading said powdered mixture into a retainer pouch consisting of a water soluble polyvinylalcohol film; (e) placing said retainer pouch into an aqueous metal treatment bath; (f) dispersing and dissolving said powdered mixture of said surface cleaner detergent and said corrosion inhibitor into said aqueous metal treatment bath; and (g) cleaning said surface of said metallic article and applying a corrosion inhibiting film to said surface of said metallic article by immersing said metallic article into said aqueous metal treatment bath containing said surface cleaner detergent and said corrosion inhibitor."
  ],
  "description_excerpt": "The present invention relates generally to an improved method and/or process for preparing and handling formulations useful in metal treatment baths, and more particularly to a method for preparing and packaging formulations useful in the preparation and replenishing of aqueous-based baths for simultaneously removing soil, grease and oils from metallic surfaces, while at the same time protecting these surfaces against corrosion. The present invention finds particular application in connection with products requiring short and/or intermediate term protection of their metallic surfaces as they are either shipped, stored or otherwise handled while awaiting further operations. Of particular interest is the protection of metallic surfaces of objects such as components, subassemblies and/or weldments which are partially completed in one production operation, and which must await transfer, shipment, and/or other indeterminate storage pending completion of the next operation.\n\nThe present invention involves an improved method or process for preparing working solutions of surface treating compounds by pre-blending surface cleaner and corrosion inhibitor components and packaging the resulting blends in water soluble pouches or containers. The method involves packaging water soluble vapor phase corrosion inhibiting chemicals (VCI) in combination with surface cleaners and/or detergents in water soluble pouches or containers so as to permit the addition of these components to baths without the necessity of hand involvement at this step of the process.",
  "cpc": [
    "C11D 3/0073",
    "C11D 17/044",
    "C11D 2111/16",
    "C11D 2111/42",
    "C11D 7/08",
    "C11D 7/14",
    "C11D 7/16",
    "C23F 11/00",
    "C23G 1/02",
    "C23G 1/14",
    "C23G 5/024"
  ],
  "ipc": [
    "C11D 11/00",
    "C11D 17/04",
    "C11D 3/00",
    "C11D 7/08",
    "C11D 7/14",
    "C11D 7/16",
    "C23F 11/00",
    "C23G 1/02",
    "C23G 1/14",
    "C23G 5/024"
  ],
  "assignees": [
    "Cortec Corp"
  ],
  "inventors": [
    "Margarita Kharshan",
    "Boris A. Miksic",
    "Clifford Cracauer III",
    "Michael Hobday"
  ],
  "filing_date": "2000-12-19",
  "publication_date": "2001-08-28",
  "grant_date": "2001-08-28",
  "priority_date": "2000-12-19",
  "application_number": "US-74150800-A",
  "family_id": "24981002",
  "cited_by_count": 9,
  "citations": [
    "US4275835A",
    "US5332525A",
    "US5344589A",
    "US4973416A",
    "US6037319A",
    "US6136776A",
    "EP0878564A1",
    "US5854145A",
    "US6156929A",
    "US6085905A"
  ]
}