Patents Represented by Attorney, Agent or Law Firm Joseph B. Barrett
  • Patent number: 5154713
    Abstract: An improved superabsorbent polymer having increased rate of water absorption is obtained by the addition, preferably prior to polymerization, of a carbonate blowing agent to a monomer solution of the monomers used to form the superabsorbent polymer. Preferred monomers include (meth)acrylic acids, preferably partially neutralized prior to polymerization and appropriate cross-linking agents. The carbonate cross-linking agents are any carbonate salt soluble or dispersible in the monomer solution, prior to polymerization. The multi-valent cationic salts of carbonate are preferred, especially the complex carbonates, for example, of magnesium.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: October 13, 1992
    Assignee: Nalco Chemical Company
    Inventor: Eric J. Lind
  • Patent number: 5143594
    Abstract: An asphalt or asphaltene refinery anti-foulant technique comprising the use in crude oil, or crude oil fraction, streams of alkyl-substituted phenol formaldehyde liquid resins in combination with hydrophilic-lipophilic vinylic polymers. The polymeric anti-foulant is added to asphalt or asphaltene containing crude oil streams to prevent fouling of metallic, or other, i.e. ceramic, surfaces, especially heat transfer surfaces.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: September 1, 1992
    Assignee: Nalco Chemical Company
    Inventors: William K. Stephenson, Bradley D. Mercer, David G. Comer
  • Patent number: 5141754
    Abstract: Zebra Mussels can be controlled by treating the waters in which they grow with a composition comprising the combination of a chlorine solution and a bromide salt capable of releasing bromide ions to the chlorine solution.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: August 25, 1992
    Assignee: Nalco Chemical Company
    Inventors: Edward W. Ekis, Jr., Andrew J. Kern
  • Patent number: 5137956
    Abstract: A solid film prelube composition for metals contacting food and beverages which comprises:______________________________________ Ingredients % by Weight ______________________________________ A. As a primary lubricant, 75-95 a C14-C22 fatty acid B. As a plasticizer-supplemental 5-25 lubricant, butyl stearate C. As a film former, an ethylene 0.5-2 acrylic acid copolymer D.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: August 11, 1992
    Assignee: Nalco Chemical Company
    Inventor: Robert L. Trivett
  • Patent number: 5128419
    Abstract: Polymers tagged with pendant fluorescent groups are prepared by the (trans)amidation derivatization of pre-existing polymers having carbonyl-type pendant groups. Polymers having pendant amide groups wherein the amide nitrogen is substituted with fluorescent moieties, prepared by (trans)amidation drrivatization, are provided. Polymers having pendant (sulfonated) napthalene moieties substituted to amide nitrogen are provided.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: July 7, 1992
    Assignee: Nalco Chemical Company
    Inventors: Dodd W. Fong, John E. Hoots
  • Patent number: 5125966
    Abstract: A process for de-oiling mill sludge employs the steps of admixing mill sludge with water and surface active agent to form a mill sludge slurry which is subjected to high shear agitation to form an oily water emulsion. Then at least 40 weight percent of the solids present in the mill sludge treated is separated from the oily water emulsion.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: June 30, 1992
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Siefert, Natalie R. Blake
  • Patent number: 5118719
    Abstract: An improved superabsorbent polymer having increased rate of water absorption is obtained by the addition, preferably prior to polymerization, of a carbonate blowing agent to a monomer solution of the monomers used to form the superabsorbent polymer. Preferred monomers include (meth)acrylic acids, preferably partially neutralized prior to polymerization and appropriate cross-linking agents. The carbonate cross-linking agents are any carbonate salt soluble or dispersible in the monomer solution, prior to polymerization. The multi-valent cationic salts of carbonate are preferred, especially the complex carbonates, for example, of magnesium.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: June 2, 1992
    Assignee: Nalco Chemical Company
    Inventor: Eric J. Lind
  • 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
  • Patent number: 5114591
    Abstract: The organic material content of acid break water from the HEC process, or similar waste water, is reduced by adsorption onto macroreticular resin.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: May 19, 1992
    Assignee: Nalco Chemical Company
    Inventors: R. R. Patzelt, M. A. Romba
  • Patent number: 5100531
    Abstract: An asphalt or asphaltene refinery anti-foulant technique comprising the use in crude oil, or crude oil fraction, streams of alkyl-substituted phenol formaldehyde liquid resins in combination with hydrophilic-lipophilic vinylic polymers. The polymeric anti-foulant is added to asphalt or asphaltene containing crude oil streams to prevent fouling of metallic, or other, i.e. ceramic, surfaces, especially heat transfer surfaces.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: March 31, 1992
    Assignee: Nalco Chemical Company
    Inventors: William K. Stephenson, Bradley D. Mercer, David G. Comer