Patents Represented by Attorney Joanne L. Horn
  • Patent number: 5024701
    Abstract: Disclosed are improved denture adhesive compositions containing a hydrophobically modified water-soluble polymer alone or admixed with an alkali metal salt of carboxymethyl cellulose having a D.S. of at least 0.3. Hydrophobically modified hydroxyalkyl celluloses and copolymers of ethylene oxide and long chain epoxyalkanes are preferred as the water-soluble polymer.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: June 18, 1991
    Assignee: Hercules Incorporated
    Inventor: Armand J. Desmarais
  • Patent number: 4966939
    Abstract: Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the absence of a protective colloid, wherein the improvement comprises conducting the polymerization in the presence of, by weight of the total monomer content, from about 0.1 to 2% of at least one substantially completely water-soluble monomer having conjugated unsaturation. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: October 30, 1990
    Assignee: Hercules Incorporated
    Inventor: Daniel H. Craig
  • Patent number: 4743384
    Abstract: Disclosed are (1) drilling fluid compositions consisting essentially of an aqueous medium selected from the group consisting of fresh and tap water, natural and synthetic sea water, and natural and synthetic brine, and carboxymethyl guar having a degree of substitution (D.S.) of 0.1 to 0.4; (2) drilling fluid compositions consisting essentially of an aqueous medium selected from the group consisting of fresh and tap water, natural and synthetic sea water, and natural and synthetic brine, a carboxymethyl guar having a D.S. of from 0.1 to 0.4, and a metal salt selected from the group consisting of water-soluble metal carbonates and bicarbonates; and (3) drilling fluid compositions consisting essentially of an aqueous medium selected from the group consisting of fresh and tap water, a carboxymethyl guar having a D.S. of from 0.1 to 0.4, a metal salt selected from the group consisting of water-soluble metal carbonates and bicarbonates, and a noncarbonate polyvalent metal salt.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: May 10, 1988
    Assignee: Aqualon Company
    Inventors: Cheng-Fa Lu, Carl A. Lukach, Robert R. Pas
  • Patent number: 4732936
    Abstract: Disclosed are copolymers of alpha methylstyrene and para methylstyrene having Ring & Ball softening points greater than 140.degree. C., a Tg of greater than 100.degree. C. to 110.degree. C., a weight average molecular weight (Mw) of less than 15,000, and a molecular weight distribution of about 2 to about 3. These copolymers are useful in adhesives, sealants and molding compounds, especially as reinforcing or modifier resins for thermoplastic block copolymers having aromatic and aliphatic blocks contained in pressure sensitive adhesives.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: March 22, 1988
    Assignee: Hercules Incorporated
    Inventor: John F. Holohan, Jr.
  • Patent number: 4707189
    Abstract: Disclosed is an essentially water-free biostable composition comprising at least one anionic water-soluble polymer containing carboxylate or sulfonate groups and small amounts of at least one cationic quaternary ammonium salt surfactant in a ratio, expressed as moles surfactant divided by mole equivalents of carboxylate or sulfonate groups in the polymer, of from about 0.025 to about 2.0 is provided, which is capable of forming highly viscoelastic solutions when mixed in an aqueous medium. By altering the ratio of cationic surfactant to anionic polymer within the specific ratio range, the viscosity of the aqueous solutions of the composition can be adjusted to a desired level.The aqueous solutions thereof are useful as thickeners in aqueous-based systems, such as latex paints and shampoos.
    Type: Grant
    Filed: June 10, 1986
    Date of Patent: November 17, 1987
    Assignee: Hercules Incorporated
    Inventor: Robert G. Nickol
  • Patent number: 4689408
    Abstract: Disclosed are novel sodium salt of carboxymethylcellulose (CMC) which are substantially nonfibrous, have a degree of substitution (D.S.) of 0.2 to 0.9 and an absorbency of at least 25 g. liquid/g. the novel CMC material, and are prepared from a cellulose furnish having a degree of polymerization (D.P.) of greater than 1,000; and to processes for preparing same. Owing to their high absorbency properties, they are particularly useful in the manufacture of disposable nonwoven products, such as adult incontinence pads, feminine hygiene products, disposable diapers and surgical dressings.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: August 25, 1987
    Assignee: Hercules Incorporated
    Inventors: Robert A. Gelman, Eleanor C. Hawkins
  • Patent number: 4684704
    Abstract: Disclosed are aqueous dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of low protective colloid grafting potential monomers in the presence of a hydrophobically modified hydroxyethyl cellulose. The resultant aqueous dispersions or latices are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: August 4, 1987
    Assignee: Hercules Incorporated
    Inventor: Daniel H. Craig
  • Patent number: 4670505
    Abstract: Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the presence of, by weight of the total monomer content, (a) from about 0.1 to 5% of at least one water-soluble amino alcohol compound and (b) from about 0.05 to about 5% of at least one protective colloid. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: June 2, 1987
    Assignee: Hercules Incorporated
    Inventor: Daniel H. Craig
  • Patent number: 4659771
    Abstract: Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the presence of at least one protective colloid, wherein the improvement comprises conducting the polymerization in the presence of, by weight of the total monomer content, from about 0.1 to 5% of at least one substantially completely water-soluble monomer having conjugated unsaturation. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: April 21, 1987
    Assignee: Hercules Incorporated
    Inventor: Daniel H. Craig
  • Patent number: 4657703
    Abstract: Disclosed is a method of improving the color of tall oil rosin esters comprising the sequential steps of (a) heating and stirring a tall oil rosin in the presence of a Lewis acid catalyst to form a mixture, (b) distilling the mixture to provide a tall oil rosin distillate, and (c) esterifying the tall oil rosin distillate with a polyol in the presence of a phenol sulfide compound. The improved tall oil rosin esters produced thereby are useful in the manufacture of a variety of products, such as paper and textile sizes, plasticizers for polyolefin films, paints, varnishes, hot melt adhesives and pressure sensitive adhesives.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: April 14, 1987
    Assignee: Hercules Incorporated
    Inventor: Susan C. Durkee
  • Patent number: 4657706
    Abstract: Disclosed is a method of improving the color of tall oil rosin esters comprising the sequential steps of (a) heating the tall oil rosin in the presence of a carboxylic acid anhydride and a Lewis acid catalyst, (b) distilling the reaction mixture, and (c) esterifying the distilled tall oil rosin with a polyol. The improved tall oil rosin esters produced thereby are useful in the manufacture of a variety of products, such as paper and textile sizes, plasticizers for polyolefin films, paints, varnishes, hot melt adhesives and pressure sensitive adhesives.
    Type: Grant
    Filed: June 10, 1986
    Date of Patent: April 14, 1987
    Assignee: Hercules Incorporated
    Inventor: Susan C. Durkee
  • Patent number: 4650716
    Abstract: Disclosed are novel sodium salts of carboxymethylcellulose (CMC) which are substantially nonfibrous, have a degree of substitution (D.S.) of 0.2 to 0.9 and an absorbency of at least 25 g. liquid/g. the novel CMC material, and are prepared from a cellulose furnish having a degree of polymerization (D.P.) of greater than 1,000; and to processes for preparing same. Owing to their high absorbency properties, they are particularly useful in the manufacture of disposable nonwoven products, such as adult incontinence pads, feminine hygiene products, disposable diapers and surgical dressings.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: March 17, 1987
    Assignee: Hercules Incorporated
    Inventor: Robert A. Gelman
  • Patent number: 4643847
    Abstract: Disclosed is a method of improving the color of tall oil rosin comprising the sequential steps of (a) solvent refining the tall oil rosin by (i) partitioning the tall oil rosin between an immiscible solvent system containing at least one non-polar solvent and one polar solvent, (ii) separating the polar solvent phase from the non-polar solvent phase, (iii) adding additional polar solvent to the resulting non-polar solvent phase, (iv) separating the polar solvent phase from the non-polar solvent phase and (v) removing the non-polar solvent; and (b) distilling the residue. The resultant tall oil rosin is about five color grades lighter than the starting tall oil rosin. Both the improved tall oil rosin and the esters produced therefrom are useful in the manufacture of a variety of products, such as paper and textile sizes, plasticizers for polyolefin films, paints, varnishes, hot melt adhesives and pressure sensitive adhesives.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: February 17, 1987
    Assignee: Hercules Incorporated
    Inventor: Thomas F. Sanderson
  • Patent number: 4640953
    Abstract: Disclosed is a precoat resin dispersion having a solids content from about 63% to about 69% comprising (1) at least one resin having a Ring and Ball softening point from about 60.degree. C. to about 100.degree. C. in an aqueous dispersion having a solids content from about 53% to about 58%; (2) at least one water-soluble polymer; (3) at least one cationic resin; and (4) water. The precoat resin dispersion is useful in the manufacture of tufted carpets, especially carpets manufactured with carboxylated latices as a backcoat.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: February 3, 1987
    Assignee: Hercules Incorporated
    Inventor: Raymond W. Goss
  • Patent number: 4617148
    Abstract: Disclosed is an opaque liquid composition suitable for use as a soap, primarily a liquid hand soap, which is thickened with a water-soluble polymer, such as, hydroxyethyl cellulose or hydroxypropyl guar.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: October 14, 1986
    Assignee: Hercules Incorporated
    Inventor: Susan J. Shields
  • Patent number: 4604311
    Abstract: Disclosed is a precoat resin dispersion having a solids content from about 63% to about 69% comprising (1) at least one resin having a Ring and Ball softening point from about 60.degree. C. to about 100.degree. C. in an aqueous dispersion having a solids content from about 53% to about 58%; (2) at least one water-soluble polymer; (3) at least one cationic resin; and (4) water. The precoat resin dispersion is useful in the manufacture of tufted carpets, especially carpets manufactured with carboxylated latices as a backcoat.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: August 5, 1986
    Assignee: Hercules Incorporated
    Inventor: Raymond W. Goss
  • Patent number: 4584189
    Abstract: Disclosed are dentifrice compositions comprising a cationic bactericide, water, a dental abrasive, and a hydrophobically modified hydroxyethyl cellulose thickener.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: April 22, 1986
    Assignee: Hercules Incorporated
    Inventor: Dianne P. Leipold
  • Patent number: 4579667
    Abstract: Disclosed are gelled aqueous compositions in brine solutions having a salt concentration from about 1% to about 10% at a pH of about 3 to about 11 having (a) a water thickening amount of an anionic partially hydrolyzed polyacrylamide and (b) a water-soluble cationic polyamide-epichlorohydrin resin in an amount sufficient to cause gelation and form the gelled composition. The compositions are useful in the recovery of oil and gas by fracturing and in enhanced oil recovery.
    Type: Grant
    Filed: November 7, 1984
    Date of Patent: April 1, 1986
    Assignee: Hercules Incorporated
    Inventors: Elliott Echt, Ronald D. Lees
  • Patent number: 4558079
    Abstract: Tape joint cement compositions suitable for use with wallboard are disclosed wherein at least one hydroxypropylhydroxyethylcellulose having specified substitution levels is employed as the water retention aid and thickener. Blends of hydroxypropylhydroxyethylcellulose with (a) at least one cellulose ether, such as, hydroxyethylcellulose, hydroxypropylcellulose, methylcellulose, methylhydroxyethylcellulose, and methylhydroxypropylcellulose or (b) a hydroxyalkylguar, such as hydroxypropylguar and hydroxyethylguar are also disclosed.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: December 10, 1985
    Assignee: Hercules Incorporated
    Inventor: Armand J. Desmarais
  • Patent number: 4556510
    Abstract: Disclosed is a transparent liquid composition suitable for use as a soap, primarily a shower soap, which is thickened with a water-soluble polymer, such as, hydroxyethyl cellulose or hydroxypropyl guar.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: December 3, 1985
    Assignee: Hercules Incorporated
    Inventor: Peggy S. Holsopple