Patents by Inventor Terrence Cotter

Terrence Cotter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9404216
    Abstract: A polyester surfactant includes a condensation esterification product of a) a polyhydric alcohol, b) a dimer or trimer of an C2 to C42 acid, and c) polyethylene glycol and polypropylene glycol. The polyhydric alcohol is selected from glycerol, arabitol, sorbitol, sorbitan, mannitol, mannitan, erythritol, pentaerythritol, or mixtures thereof. The polyester surfactant is used for deinking, for example, printed waste paper. A method for deinking includes a step of contacting an aqueous pulp slurry with the addition of a composition comprising a polyester surfactant.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: August 2, 2016
    Assignee: KEMIRA CHEMICALS, INC.
    Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
  • Publication number: 20130312922
    Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.
    Type: Application
    Filed: August 6, 2013
    Publication date: November 28, 2013
    Applicant: Kemira Chemicals, Inc.
    Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
  • Patent number: 8524036
    Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: September 3, 2013
    Assignee: Kemira Chemicals, Inc.
    Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
  • Patent number: 8317973
    Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants containing a condensation esterification product of a polyhydric alcohol, a multimeric acid, and at least one polyalkylene glycol for use in flotation deinking under traditional alkaline, reduced alkali, and true neutral deinking conditions. The polyester deinking surfactants of the present invention will effectively exhibit greater selectivity than traditional flotation deinking surfactants. In particular, the polyester deinking surfactants can give better foam control, improved yield, and no loss in ERIC reduction.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: November 27, 2012
    Assignee: Kemira Chemical, Inc.
    Inventors: Terrence Cotter, Scott W. Rosencrance, Robert Wilson
  • Publication number: 20110108221
    Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.
    Type: Application
    Filed: November 11, 2009
    Publication date: May 12, 2011
    Applicant: Kemira Chemicals, Inc.
    Inventors: Terrence Cotter, Scott W. Rosencrance, Robert Wilson
  • Publication number: 20060094798
    Abstract: A method of emulsifying a substituted cyclic dicarboxylic acid anhydride sizing agent such as alkenyl succinic anhydride (ASA), primarily for papermaking operations, uses a cationic reaction polymer synthesized from an epihalohydrin and a polyamine, preferably a polyalkyleneamine. The synthesis of the reaction product is controlled to obtain a polymer end product viscosity, by Brookfield, ranging between 50 and 300 cps at 25° C. and at 30 to 35% solids. Alternatively, the preferred cationic polymers can be described as having an intrinsic viscosity value in a 0.2M NaCl solution of 0.18 to 0.35 dL/gm at 30° C. The polyamine-epihalohydrin polymers can also be optionally used in combination with a surfactant for further emulsifying of the ASA size.
    Type: Application
    Filed: November 4, 2004
    Publication date: May 4, 2006
    Inventors: Terrence Cotter, Stephen Kurowsky, Gary Freeman
  • Publication number: 20060076117
    Abstract: Methods of sizing paper using a latex as a surface sizing agent are described, in which the latex is defined by acid number or particle size. Further described are methods of improving toner adhesion of papers that are surface sized with alkenylsuccinic anhydrides by employing latexes that have a glass transition temperature of from about 25 to about 65. Still further described are low shear methods of dispersing alkenylsuccinic anhydrides in sizing compositions using latexes as dispersing aids.
    Type: Application
    Filed: November 14, 2005
    Publication date: April 13, 2006
    Inventors: Delos Boardman, Terrence Cotter, Vaughn Irwin
  • Patent number: 4931202
    Abstract: Highly alkaline detergent compositions are prepared by mixing together, in a mixing device, a melt of alkaline material with a hardness sequestering agent, such as an alkali metal complex phosphate sequestrant. The resulting mixture is, then, pelletized on a chill belt. A source of solid active chlorine pellets is combined with the pelletized mixture. Chlorine degradation is essentially eliminated by combining the alkaline material pellets with the pelletized chlorine source.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: June 5, 1990
    Assignee: Diversey Corporation
    Inventors: Terrence Cotter, Theodore Anderson, Robert Gansser, Lewis R. Kryk, Theodore R. Rieple
  • Patent number: 4823441
    Abstract: Highly alkaline detergent compositions are prepared by mixing together, in a mixing device, a melt of alkaline material with a heat-alkaline sensitive material, such as, an alkali metal complex phosphate sequestrant and/or an active-chlorine source. The resulting mixture is, then, pelletized on a chill belt. Because of the short contact time between the molten alkaline material and the sequestrant and the rapid solidification, reversion of the sequestrant, particularly, a phosphate sequestrant, is substantially reduced.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: April 25, 1989
    Assignee: Diversey Corporation
    Inventors: Terrence Cotter, Theodore Anderson, Robert Gansser, Louis Kryk