Patent Listings

Surface Chemists of Florida, Inc. has patented inventions in many of the technologies in which it is active. Patent rights to inventions that result from contract research or joint ventures are negotiated as part of the contractual agreement between SCF and the client. The following list represents U. S. and Canadian Patents that have been granted or are pending.

  •  A. Hudson, U.S Patent Application 20150105310,

Laundry Additives from Crude Protein Sources , April 16, 2015

Modified protein compositions that provide benefits in laundry products are produced by minimal processing of crude protein sources. Modifications include reaction with one or more of 1) cationic functional agents, 2) anionic functional agents, 3) proteolytic enzymes, 4) redudng agents and 5) oxidizing agents. They may be complexed with a surfactant to improve the separation from insoluble cellulosic carbohydrate materials in the crude protein sources, and to improve their dispersibility and effectiveness in laundry products. The resulting products may provide benefits of preventing soil redeposition, preventing dye transfer, soil repellency, and fabric wear reduction in laundry operations. The invention also encompasses the laundry products comprising the protein compositions.

  •   A. Hudson, L. Senior, B. Sencherev, V. Granquist, U.S. Patent Application 20130305796,
    Encapsulated Particle, November 21, 2013
    An encapsulated particle includes a core particle and a polyurethane disposed about the core particle. The polyurethane includes the reaction product of an aromatic isocyanate component and a polyol component. The polyol component includes a polyol derived from an aromatic amine-based initiator and an aliphatic polyether polyol. The polyol derived from the aromatic amine-based initiator has a nominal functionality of 4. The aliphatic polyether polyol has a nominal functionality of from 2 to 4. The weight ratio of the polyol derived from the aromatic amine-based initiator and the aliphatic polyether polyol is from about 1:2 to 2:1. A method of forming the encapsulated particle is also provided.
  • A. Hudson and J. Nevin, U.S. Patent Application 20080196463
    Precursor Coatings for Sulfur Coated Controlled Release Fertilizer“, August 21, 2008
    A controlled release sulfur coated fertilizer with improved abrasion resistance is produced by applying a precursor coating that forms a cohesive film which adheres to the fertilizer substrate particles and to the sulfur that is subsequently applied in molten form. The improved fertilizer also optionally comprises a sealant coating applied after the molten sulfur. This invention is to the composition of the fertilizer and the method of production.
  • A. Hudson, A. Brager and M. Maccia, U.S. Patent Application 20090092760
    Metal Protectant and Method of Application”, April, 2009.
    A protectant for metal surfaces includes a polymer that contains at least one functional groups for adherence to the metal surface and a plurality of functional groups for coupling of the polymers and a volatile solvent that inhibits coupling of the polymers. The protectant can be transferred to the metal surface from a wipe such that the desired surface is selectively wetted with the protectant.
  • A. Hudson, U. S. Patent 7,387,991
    Microemulsions Containing Alkoxylated Amine Carboxylates, June 17, 2008
    The compositions of this invention are microemulsions having a. a surfactant consisting essentially of a mixture of one or more alkoxylated amines or alkoxylated quaternary ammonium salts and one or more preferably branched carboxylic acids or salts thereof, b. a solvent or oil that is liquid at 25.degree. C. and is insoluble in water, and c. water, wherein an optically clear isotropic microemulsion is formed.
  • A. Hudson, U. S. Patent 6,599,472
    Oil Soluble Scavengers for Sulfides and Mercaptans, July 29, 2003
    This invention provides oil soluble sulfhydryl compound scavengers which are salt compositions of the formula: wherein M is a metal ion whose sulfide salt is less than 0.1% soluble in water, n is 2 or 3, x is an integer from 1 to n, and R a hydrocarbyl radical containing from about 4 to about 19 carbon atoms, or mixture of these compositions. A method is also provided to control odors produced by sulfhydryl compounds wherein the he said sulfhydryl compounds are contacted with the metal salts described above.
  • A. Hudson and J. Nevin, U. S. Patent 6,300,393
    Insolubilizing Additives for Paper Coating Binders and Paper Surface Sizes, October 9, 2001
    Insolubilizing agents are disclosed for pigment binders and surface sizes containing functional groups capable of reacting with carboxylic acid anhydride moieties to form chemical bonds. The insolubilizing agents are polymers or other compounds containing a plurality of carboxylic acid anhydride moieties per molecular entity. The anhydride moieties do not substantially hydrolyze or otherwise react until the paper coating is applied to the paper and dried and cured, at which time the anhydride moieties react with the functional groups of the pigment binder or surface size and render it water insoluble. A method to improve the water resistance and printability of coated paper using the insolubilizing agents of the invention is also disclosed.
  • A. Hudson, U. S. Patent 5,984,994
    Sulfur Coated Fertilizers with Improved Abrasion Resistance, November 16, 1999.
    Sealant compositions for sulfur coated fertilizer particles are mixtures of wax materials and additives which provide improved moisture barrier properties and abrasion resistance. The sealants have penetration values measured by ASTM D-1321 of at least 20 at 25.degree. C., and congealing points measured by ASTM D-938 of between about 50.degree. C. and about 100.degree. C. The sealed fertilizer particles are conditioned with particulate materials with a surface area of at least about 2 m.sup.2 /g and an oil absorption of at least about 100%. A method for the production of abrasion resistant sulfur coated fertilizers is also disclosed.
  • V. Lamberti and A. Hudson, U. S. Patent 5,958,867
    Sequestrant Compositions, September 28, 1999.
    Assigned to U.S. Borax, Inc.
    Sequestrant compositions comprising combinations of an alkali metal or ammonium borate with an adduct formed by reaction of an .alpha., .beta. unsaturated polycarboxylic acid with a mono- or dicarboxylated sugar, in which the adduct has at least two hydroxy groups in a vicinal configuration. The sequestrants can be used to complex alkaline earth and transition metal ions and are especially useful for complexing calcium and magnesium in aqueous laundry solutions. They also are effective for soil dispersion and for inhibiting the deposition of soil on fabric.
  • V. Lamberti and A. Hudson, U. S. Patent 5,755,990
    Sequestrant Compositions
    , May 26, 1998.
    Assigned to U.S. Borax, Inc.
    Sequestrant compositions comprising combinations of an alkali metal or ammonium borate with an adduct formed by reaction of an .alpha., .beta. unsaturated polycarboxylic acid with a mono- or dicarboxylated sugar, in which the adduct has at least two hydroxy groups in a vicinal configuration. The sequestrants can be used to complex alkaline earth and transition metal ions and are especially useful for complexing calcium and magnesium in aqueous laundry solutions. They also are effective for soil dispersion and for inhibiting the deposition of soil on fabric.
  • P. Ferrell and A. Hudson, U. S. Patent 5,750,130
    Pesticide Compositions
    , May 12, 1998.
    Granular pesticide compositions wherein a pesticide material is applied to a granular substrate using a carrier composition which provides improved adhesion of the pesticide to the substrate and abrasion resistance. The carrier composition may also provide controlled release of the pesticide.
  • A. Hudson, U. S. Patent 5,704,961,
    Corrosion Inhibitors for Liquid Fertilizers
    , January 6, 1998.
    Non-corrosive nitrogen containing fertilizer solutions are provided which contain effective levels of corrosion inhibitors which are monocarboxylic acids or polycarboxylic acids, or their salts, or mixtures thereof.
  • A. Hudson, U. S. Patent 5,698,002
    Controlled Release Fertilizers Utilizing an Epoxy Polymer Primer Coat, and Methods of Production, December 16, 1997.
    Controlled release, particulate fertilizer products having a water soluble fertilizer central mass encased in a plurality of water insoluble, abrasion resistant coatings plus coating compositions and methods for the production of such products are disclosed. At least one essential inner coating is an epoxide reaction product of A. at least one epoxide resin containing at least about 2 epoxide moieties per molecule, and B. at least one amine curing agent containing at least about two N–H moieties/molecule.
  • A. Hudson and J. Nevin, U. S. Patent 5,662,733,
    Improving Viscosity and Gel Strength of Organic Adhesive Compositions by the Addition of Acidic Materials
    , September 2, 1997
    The viscosity and gel strength of organic adhesive coating compositions containing an organic adhesive material, usually asphalt, and clay minerals and cationic surfactants is further enhanced by the addition of small quantities of acidic compounds which have pK.sub.A values less than about 5. The acidic compounds preferably are water soluble and contain phosphorus.
  • A. Hudson and F. Woodward, U. S. Patent 5,538,531,
    Controlled Release Fertilizer and Methods of Production, July 23, 1996
    Controlled release, particulate fertilizer products having a water soluble fertilizer central mass encased in a plurality of water insoluble, abrasion resistant coatings plus unique coating compositions and methods for the production of such products are disclosed. At least one essential inner coating is a urethane reaction product of (1) a polyisocyanate selected from diphenylmethane diisocyanate, toluene diisocyanate, derivatives thereof, polymers thereof and mixtures thereof which contain about 1.5 to 3 isocyannate groups per molecule and between about 10 and 50% NCO, and (2) a polyol having about 2 to 6 hydroxyl moieties and at least one alkyl moiety containing about 10 to 22 carbon atoms, e.g. hydrogenated castor oil. An essential outer coating is formed of an organic wax having a drop melting point of between about 50.degree. and 120.degree. C.
  • A. Hudson and J. Nevin, U. S. Patent 5,529,621
    Surfactants for Improving the Gel Properties of Clay Minerals in Coating Compositions
    , June 25, 1996
    This invention is to surfactant compositions which are organic salts of a polyamine and a carboxylic acid. The polyamine has the structure: 5529621_1wherein R is (i) alkyl or alkenyl containing from about 10 to about 22 carbon atoms or (i) R’–O–CH2CH2CH2– wherein R’ is alkyl containing from about 8 to about 22 carbon atoms; A is a divalent hydrocarbyl group containing about 2 to about 6 carbon atoms; and n is an integer from about 1 to about 3. The carboxylic acid has the structure: wherein R” is alkyl or alkenyl containing about 6 to about 22 carbon atoms. The surfactants may contain polar activators. This invention is also to compositions containing asphalt, a clay mineral, and the above described surfactant.
  • A. Hudson, U. S. Patent 5,478,375
    Sealants for Fertilizer Compositions Containing Natural Waxes, December 26, 1995. Assigned to Lesco, Inc.
    Novel sealants for sulfur coated urea fertilizer are comprised mixtures of fatty esters of polyhydric alcohols and polymers which are soluble therein and contain ester, carboxylate, or hydroxyl functionality; said mixtures are preferably crosslinked with a transesterification catalyst, and optionally contain dicarboxylic or tricarboxylic acids with 9 to 60 carbon atoms, or mixtures thereof.
  • A. Hudson, F. Woodward, R. Timmons and H. Goertz, U. S. Patent 5,466,274
    Abrasion Resistant Coatings for Fertilizers, November 14, 1995.
    Assigned to O.M. Scotts.
    Polymer topcoated sulfur coated fertilizer compositions are provided which exhibit slow release characteristics and are abrasion resistant, free flowing, non-smearing and essentially dustless products.
  • A. Hudson and F. Woodward, U.S. Patent 5,423,897
    Non-blocking Wax Sealants for Fertilizers, June 13, 1995
    Mixtures of 50 to 99 percent hydrocarbon waxes and 1 to 50 percent of hydrocarbon soluble surfactants chosen from the group consisting of (a) primary and secondary alkyl amines in which the alkyl groups contain 16 to 30 carbon atoms, and (b) fatty acid amides of primary alkyl amines and (c) fatty acid esters of alkanols in which the alkyl groups of the acids, amines and alkanols contain 16 to 30 carbon atoms, or mixtures thereof, provide sealant coatings for sulfur coated urea which are superior moisture barriers and are non-blocking and thus do not require the addition of clay or other fine particle materials.
  • Hudson and F. Woodward, U.S. Patent 5,300,135
    Abrasion Resistant Coatings for Fertilizers, April 5, 1994.
    Assigned to O.M. Scott.
    Mixtures of hydrocarbon waxes and hydrocarbon soluble polymers which have oxygen containing polar groups provide an abrasion resistant sealant coating for sulfur coated urea.
  • F. Woodward and A. Hudson, U. S. Patent 5,008,039
    Low Foaming Rust Inhibiting Composition, April 16, 1991.
    A low foaming, rust inhibiting composition is disclosed which contains:
    A. a rust inhibiting amount of a dicarboxylic acid of the formula: 4956106_1wherein Z is COOH or H, and one of each is present, and x and y are from 3 to 9, with x+y=12;B. a foam inhibiting amount of a triglyceride acid of the formula: 4956106_2wherein x and y are integers from 3 to 9, x and y together equal 12. R.sub.1 and R.sub.2 are saturated/unsaturated hydrocarbon terminals of fatty acids esterified with glycerol; and C. a base sufficient to adjust the pH of the composition of about 6.5 to 10.5.
  • F. Woodward and A. Hudson, U.S. Patent 4,956,106
    Low Foaming Rust Inhibiting Composition, September 11, 1990.
    Assigned to Westvaco Corp.
    A low foaming, rust inhibiting composition is disclosed which contains:
    A. a rust inhibiting amount of a dicarboxylic acid of the formula: 4956106_1wherein Z is COOH or H, and one of each is present, and x and y are from 3 to 9, with x+y=12;
    B. a foam inhibiting amount of a triglyceride acid of the formula: 4956106_2wherein x and y are integers from 3 to 9, x and y together equal 12. R.sub.1 and R.sub.2 are saturated/unsaturated hydrocarbon terminals of fatty acids esterified with glycerol; and C. a base sufficient to adjust the pH of the composition to about 6.5 to 10.5.
  • F. Woodward and A. Hudson, U. S. Patent 4,891,143
    Water Insoluble Antistatic Compositions, January 2, 1990.
    Compositions which are particulate water insoluble and nondispersible salts of certain surface active sulfate or sulfonate anions and surface active quaternary ammonium cations are described. They are useful as wash cycle laundry softener-antistatic compositions, in both liquid and powdered laundry products and also dispersed in solid matrices. The particle size is from 50 to 500 microns.
  • F. Woodward and A. Hudson, Canadian Patent 1,232,819
    Water Insoluble Antistatic Composition, February 16, 1988.
    Compositions which are particulate water insoluble and non dispersible salts of certain surface active sulfate or sulfonate anions and surface active quaternary ammonium cations are described. They are useful as wash cycle laundry softener-antistatic compositions.
  • F. Woodward and A. Hudson, U.S. Patent 4,597,975
    Iodine Surface Active Compositions, July 1, 1986.
    Iodine-containing surface active compositions, useful for cleansing and degerming skin, possessing high lather, good emolliency, mildness, and a pleasant afterfeel; and also iodine-containing compositions useful for cleaning and degerming hard surfaces, possessing good detergency and long lasting biocidal activity, contain certain surface active amine oxides and iodine in the form of an amine oxide-triiodide undissociated salt.
  • F. Woodward and A. Hudson, U.S. Patent 4,433,113
    Ionomers as Antistatic Agents, February 21, 1984.
    New polymers are described which are copolymers of olefins and tetraalkyl ammonium carboxylates. They are insoluble in water, soluble in hydrocarbons and are antistatic agents.
  • F. Woodward and A. Hudson, U.S. Patent 4,392,965
    Laundry Softner Antistatic Composition, July 12, 1983.
    Softener-antistatic compositions which are effective when added to a laundry wash cycle are water insoluble organic salts of a corboxylate anion containing a hydrocarbyl moiety with at least 10 carbon atoms and a quaternary ammonium cation containing two hydrocarbyl moieties with at least 12 carbon atoms each.
  • Fred E. Woodward, U.S. Patent 4,183,766
    “Paper Coating Composition” January, 1980.
    The effectiveness of pigment coatings compositions for printing paper stock is enhanced by the use of phosphate esters of aliphatic alcohols and/or their salts therein.
  • Fred E. Woodward, U.S. Patent 3,966,628
    “Solid cleaning compositions containing C.sub.21 dicarboxylic acid” June, 1976.
    Solid free-flowing, non-toxic cleaning compositions in the form of dry mix and powdered formulations of alkaline builders combined with from about 0.5% to about 15% of C.sub.21 dicarboxylic acid. An alternative embodiment comprises alkaline builders combined with a mixture of salts of C.sub.21 dicarboxylic acid in a concentration of from about 0.5% to about 28% with nonionic synthetic detergents in a 1:1 to 2:1 weight ratio of C.sub.21 dicarboxylic acid to nonionic synthetic detergent.
  • Fred E. Woodward, U.S. Patent 3,956,161
    “Cleaning compositions containing C.sub.21 dicarboxylic acid “ May, 1976.
    Compositions containing C.sub.21 dicarboxylic acid and nonionics in a weight ratio of 20:1 to 1:20, respectively, are provided which are uniquely effective as soluble surfactant systems for liquid alkaline cleaners.