Patents by Inventor Dennis P. Stack

Dennis P. Stack 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: 5278222
    Abstract: Low viscosity, fast curing binders for nonwoven cellulosic materials comprise an aqueous dispersion of discrete particles of a highly functionalized emulsion copolymer resulting from the copolymerization of a water insoluble olefinic non-ionic organic compound, a water soluble olefinic carboxylate compound and a water soluble olefinic hydroxy ester or a water soluble olefinic amide or a mixture of hydroxy ester and amide. The emulsion copolymer dispersion is admixed with a latex to provide a binder having a relatively low viscosity and capable of reaching about 80 percent of fully cured wet tensile strength in 8 seconds or less.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: January 11, 1994
    Assignee: Rohm and Haas Company
    Inventor: Dennis P. Stack
  • Patent number: 5268419
    Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group, which is reacted with a primary or secondary amide of an olefinically unsaturated carboxylic acid. The product of said reaction is admixed with a non-formaldehyde containing latex carrier which has been formulated with a non-formaldehyde forming reactive monomer to produce binder compositions which reach substantially fully cured wet strength in 8 seconds or less.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: December 7, 1993
    Assignee: Rohm and Haas Company
    Inventors: Dennis P. Stack, Paul J. Steinwand
  • Patent number: 5198492
    Abstract: Low viscosity, fast curing binders for nonwoven cellulosic materials comprise an aqueous dispersion of discrete particles of a highly functionalized emulsion copolymer resulting from the copolymerization of a water insoluble olefinic non-ionic organic compound, a water soluble olefinic carboxylate compound and a water soluble olefinic hydroxy ester or a water soluble olefinic amide or a mixture of hydroxy ester and amide. The emulsion copolymer dispersion is admixed with a latex to provide a binder having a relatively low viscosity and capable of reaching about 80 percent of fully cured wet tensile strength in 8 seconds or less.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: March 30, 1993
    Assignee: Rohn and Haas Company
    Inventor: Dennis P. Stack
  • Patent number: 5137963
    Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group conjugated with the olefinic linkage, which is reacted with a hydroxyalkyl ester of an olefinically unsaturated carboxylic acid. The product of said reaction is admixed with a non-formaldehyde containing latex carrier to produce a binder composition which will reach substantially fully cured wet strength in 8 seconds or less.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: August 11, 1992
    Assignee: Union Oil Company of California
    Inventor: Dennis P. Stack
  • Patent number: 5104923
    Abstract: A non-polymerizable polycarboxylate imparts greater wet strength to nonwovens bound by an emulsion polymer containing a polymerizable cross-linker.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: April 14, 1992
    Assignee: Union Oil Company of California
    Inventors: Paul J. Steinwand, Dennis P. Stack
  • Patent number: 5028655
    Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group conjugated with the olefinic linkage, which is reacted with a hydroxyalkyl ester of an olefinically unsaturated carboxylic acid. The product of said reaction is admixed with a non-formaldehyde containing latex carrier to produce a binder composition which will reach substantially fully cured wet strength in 8 seconds or less.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: July 2, 1991
    Assignee: Union Oil Company of California
    Inventor: Dennis P. Stack
  • Patent number: 5008326
    Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group conjugated with the olefinic linkage, which is reacted with a hydroxyalkyl ester of an olefinically unsaturated carboxylic acid. The product of said reaction is admixed with a non-formaldehyde containing latex carrier to produce a binder composition which will reach substantially fully cured wet strength in 8 seconds or less.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: April 16, 1991
    Assignee: Union Oil Company of California
    Inventor: Dennis P. Stack
  • Patent number: 4939200
    Abstract: Non-formaldehyde emitting binders for nonwoven cellulosic materials comprise a solution copolymer of an olefinically unsaturated organic compound having at least one carboxylate group, which is reacted with a primary or secondary amide of an olefinically unsaturated carboxylic acid. The produce of said reaction is admixed with a non-formaldehyde containing latex carrier which has been formulated with a non-formaldehyde forming reactive monomer to produce binder compositions which reach substantially fully cured wet strength in 8 seconds or less.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: July 3, 1990
    Assignee: Union Oil Company of California
    Inventors: Dennis P. Stack, Paul J. Steinwand