Paint Detackifying Patents (Class 210/930)
  • One drum activator catalyzed paint detackification program
    Patent number: 5147558
    Abstract: In a paint spray booth wherein water is used to collect oversprayed paint, a process for detackifying and coagulating the oversprayed paint by the addition of specific amounts of specific anions and cationic polymers blended prior to addition to the water system.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: September 15, 1992
    Assignee: Betz Laboratories, Inc.
    Inventor: Deborah L. Purnell
  • Paint spray booth treatment program for water base and water base and water base blended with oil base paints
    Patent number: 5147557
    Abstract: A process for the detackification and coagulation of oversprayed water-borne and mixed water-borne and oil based paint particles in the water collection system of a paint spray booth comprising adding a unitary blend of an inorganic anion and a cationic polymer selected from the group consisting of polydiallyl dimethyl ammonium chloride, a condensation product of dimethylamine plus epichlorohydrin and a condensation product of dimethylamine plus ethylene diamine plus epichlorohydrin.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: September 15, 1992
    Assignee: Betz Laboratories, Inc.
    Inventor: Deborah L. Purnell
  • Methods for detackification of paint spray operation wastes
    Patent number: 5143624
    Abstract: Poly(diallylamine) blended with poly(N-methylolacrylamide) effectively detackifies over-sprayed paint in the circulating water of a wet paint spray booth operation. After detackification the dispersed paint is flocculated with hydrolyzed polyacrylamide, the paint waste is removed, and the clarified water is recirculated back into the paint spray booth operation.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: September 1, 1992
    Assignee: Calgon Corporation
    Inventor: Lewis D. Morse
  • Method for detackifying oversprayed paint
    Patent number: 5116514
    Abstract: Oversprayed paint in a paint spray operation is detackified by dosing the water of the waste water system of such operation with a composition comprising a polymer and aluminum sulfate. The polymer contains at least about 10 mole percent of cationic mer units of monoethylenically unsaturated monomer.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: May 26, 1992
    Assignee: Nalco Chemical Company
    Inventors: Bhupati R. Bhattacharyya, deceased, Shu-Jen Huang, Chandrashekar S. Shetty, Nang T. Bui, Yvonne O. Dunn
  • Method for detackification of paint spray operation wastes
    Patent number: 5076939
    Abstract: A novel method of treating circulating water containing over-sprayed water-based or solvent-based paint, such as in a paint spray booth operation, comprises adjusting the alkalinity of the paint spray booth water by adding an alkalinity source thereto, contacting the oversprayed paint with the alkalinity-adjusted water and with an alumina coated silica sol added to the water, adding an effective amount of a polymer floccing agent to the water, and removing resulting sludge from the water.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: December 31, 1991
    Assignee: Calgon Corporation
    Inventors: W. Eugene Hunter, Lewis D. Morse
  • Method of detackifying paint overspray using reduced cation exchange capacity smectite clays and organoclays
    Patent number: 5034136
    Abstract: The present invention relates a method for detackifying paint overspray comprising contacting the paint overspray with reduced cation exchange capacity smectite clays and organoclays.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: July 23, 1991
    Assignee: Rheox, Inc.
    Inventors: Charles A. Cody, Edward D. Magauran
  • Paint detackification using water-dispersible polymeric latexes
    Patent number: 5006261
    Abstract: Water-dispersible polymeric latexes are excellent paint detackifying agents for treating the circulating water in paint spray booths when latexes have an average particle size less than 10 microns.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: April 9, 1991
    Assignee: Nalco Chemical Company
    Inventors: Shu-Jen W. Huang, Claudia V. Stenger
  • Method of paint sludge conversion for disposal
    Patent number: 5004550
    Abstract: A method of paint sludge conversion and sludge removal from a sump pit for disposal is provided which is particularly adapted for use with paint waste sludge derived from wet spray booth operations. The method involves blending with the starting sludge caustic, oil and emulsifiers. Water may be added to achieve a desired water to total solids weight ratio. The product is a pumpable liquid disperse system which is easily charged to tankers or the like for pump out from the sludge pit.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: April 2, 1991
    Assignee: Nalco Chemical Company
    Inventors: John A. Beckman, Shu-Jen Huang, Abdol R. Ebrat