Patents Represented by Attorney Joanne L. Horn
-
Patent number: 5024701Abstract: 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: GrantFiled: December 22, 1988Date of Patent: June 18, 1991Assignee: Hercules IncorporatedInventor: Armand J. Desmarais
-
Patent number: 4966939Abstract: 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: GrantFiled: July 11, 1986Date of Patent: October 30, 1990Assignee: Hercules IncorporatedInventor: Daniel H. Craig
-
Patent number: 4743384Abstract: 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: GrantFiled: May 13, 1986Date of Patent: May 10, 1988Assignee: Aqualon CompanyInventors: Cheng-Fa Lu, Carl A. Lukach, Robert R. Pas
-
Patent number: 4732936Abstract: 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: GrantFiled: December 17, 1985Date of Patent: March 22, 1988Assignee: Hercules IncorporatedInventor: John F. Holohan, Jr.
-
Patent number: 4707189Abstract: 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: GrantFiled: June 10, 1986Date of Patent: November 17, 1987Assignee: Hercules IncorporatedInventor: Robert G. Nickol
-
Patent number: 4689408Abstract: 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: GrantFiled: July 7, 1986Date of Patent: August 25, 1987Assignee: Hercules IncorporatedInventors: Robert A. Gelman, Eleanor C. Hawkins
-
Patent number: 4684704Abstract: 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: GrantFiled: June 19, 1986Date of Patent: August 4, 1987Assignee: Hercules IncorporatedInventor: Daniel H. Craig
-
Patent number: 4670505Abstract: 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: GrantFiled: August 23, 1985Date of Patent: June 2, 1987Assignee: Hercules IncorporatedInventor: Daniel H. Craig
-
Patent number: 4659771Abstract: 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: GrantFiled: June 23, 1986Date of Patent: April 21, 1987Assignee: Hercules IncorporatedInventor: Daniel H. Craig
-
Patent number: 4657703Abstract: 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: GrantFiled: June 30, 1986Date of Patent: April 14, 1987Assignee: Hercules IncorporatedInventor: Susan C. Durkee
-
Patent number: 4657706Abstract: 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: GrantFiled: June 10, 1986Date of Patent: April 14, 1987Assignee: Hercules IncorporatedInventor: Susan C. Durkee
-
Patent number: 4650716Abstract: 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: GrantFiled: May 14, 1985Date of Patent: March 17, 1987Assignee: Hercules IncorporatedInventor: Robert A. Gelman
-
Patent number: 4643847Abstract: 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: GrantFiled: November 12, 1985Date of Patent: February 17, 1987Assignee: Hercules IncorporatedInventor: Thomas F. Sanderson
-
Patent number: 4640953Abstract: 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: GrantFiled: July 3, 1984Date of Patent: February 3, 1987Assignee: Hercules IncorporatedInventor: Raymond W. Goss
-
Patent number: 4617148Abstract: 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: GrantFiled: June 6, 1984Date of Patent: October 14, 1986Assignee: Hercules IncorporatedInventor: Susan J. Shields
-
Patent number: 4604311Abstract: 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: GrantFiled: June 27, 1985Date of Patent: August 5, 1986Assignee: Hercules IncorporatedInventor: Raymond W. Goss
-
Patent number: 4584189Abstract: Disclosed are dentifrice compositions comprising a cationic bactericide, water, a dental abrasive, and a hydrophobically modified hydroxyethyl cellulose thickener.Type: GrantFiled: September 28, 1984Date of Patent: April 22, 1986Assignee: Hercules IncorporatedInventor: Dianne P. Leipold
-
Patent number: 4579667Abstract: 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: GrantFiled: November 7, 1984Date of Patent: April 1, 1986Assignee: Hercules IncorporatedInventors: Elliott Echt, Ronald D. Lees
-
Patent number: 4558079Abstract: 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: GrantFiled: December 24, 1984Date of Patent: December 10, 1985Assignee: Hercules IncorporatedInventor: Armand J. Desmarais
-
Patent number: 4556510Abstract: 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: GrantFiled: June 6, 1984Date of Patent: December 3, 1985Assignee: Hercules IncorporatedInventor: Peggy S. Holsopple