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| Number | Title | Issue Date |
| 6977314 | Metal-doped sulfonated ion exchange resin catalysts A method for preparing ketones in greater yield and selectivity compared to previous catalyzed reactions by acid-catalyzed condensation reaction using a metal-doped polysulfonated ion exchange resin catalyst is disclosed. For example, use of polysulfonated ion excha... | 12/20/2005 |
| 6784213 | Method for preparation of strong acid cation exchange resins An improved process for preparing strong acid cation exchange resins by sulfonation of wet crosslinked copolymer in the absence of organic swelling solvents is disclosed. This process involves dewatering a crosslinked poly(vinylaromatic) copolymer to selected residu... | 08/31/2004 |
| 6753016 | Preservation of wood products A method for the protection of wood and other wood materials without affecting dimensional stability or surface integrity of the treated material is described. The method involves treating wood material with an iron salt and selected oxidants where the iron salt is ... | 06/22/2004 |
| 6511673 | Microbicidal composition Microbicidal compositions containing selected ratios of a non-halogenated 2-alkyl-3-isothiazolone and one or more (C1 -C7) esters of para-hydroxybenzoic acid are disclosed as improved formulations for controlling microbial growth. In... | 01/28/2003 |
| 6435012 | Method for determination of chromatographic media parameters in packed beds of hydrophobic polymer particles An improved method for measuring the chromatographic properties, such as excluded volume, of hydrophobic polymer substrates is disclosed. Use of 0.05-1 micron sized crosslinked ionically-charged polymer particles, especially emulsion-form or ground polyme... | 08/20/2002 |
| 6417211 | Isothiazolone concentrates Stable liquid microbicide compositions, having high concentrations of non-halogenated 3-isothiazolones, are disclosed. Aqueous concentrates containing from 60 to 95% non-halogenated 3-isothiazolones provide excellent low temperature storage stability and ... | 07/09/2002 |
| 6403533 | Stabilized microbicide formulation A method for stabilizing dilute solutions of 3-isothiazolone compounds against the formation of unwanted brown precipitate in the presence of low levels of copper, by the addition of 2 to 50% of selected water-soluble organic solvents, is disclosed. The a... | 06/11/2002 |
| 6395185 | Scale inhibitors The invention relates to the inhibition of tripolyphosphate and pyrophosphate scales in aqueous systems involving adding to said aqueous system at least one copolymer comprising the following monomers in polymerized form: (I) 50-80% by weight of one or mo... | 05/28/2002 |
| 6387974 | Polymeric adsorbents and method of preparation Macroporous polymers having selected porosity and permeability characteristics that provide rigid polymer matrices suitable for use in medium and high pressure reversed phase liquid chromatography (RPC) are disclosed. A method for preparing the polymers u... | 05/14/2002 |
| 6384104 | Method for preparing ultraviolet radiation-absorbing compositions A method for improving the storage stability of personal care formulations containing ultraviolet (UV) radiation-absorbing agents (sunscreen agents) is disclosed. Latex polymer particles containing a void, having a particle size from 50 to 1000 nanometers... | 05/07/2002 |
| 6368575 | Method for inhibiting corrosion in an aqueous aerosol or foam hair styling composition A method for improving the corrosion resistance of aerosol or foam hair spray formulations in metal containers is disclosed. In particular, the present invention involves the use of phosphate ester emulsifiers in the preparation of the emulsion polymer ha... | 04/09/2002 |
| 6312627 | Method for preparing ceramic compositions A method for preparing ceramic particle slurries having controlled rheological properties to allow further processing to ceramic green bodies with improved compaction, green strength and green density is disclosed. Polymer additives containing 0.1 to 20% ... | 11/06/2001 |
| 6274080 | Method for preparing ceramic compositions A method for providing improved compaction, green density, green strength and surface finish properties in simulated stone and mineral-like materials from ceramic green bodies, based on addition of selected polymer additives during ceramic processing, is ... | 08/14/2001 |
| 6254892 | Pellet formulations The invention concerns chemical compositions in the form of pellets which disintegrate quickly and efficiently in aqueous media and a method of producing the pellets. Such pellets comprise (a) at least one constituent with pharmaceutical, agrochemical, wa... | 07/03/2001 |
| 6251680 | Detectable polymers and methods for detecting polymers in Aqueous systems Polymers having amine-thiol terminal moieties are provided. The amine-thiol terminal moieties are imparted by using amine-thiols as chain transfer agents in aqueous addition polymerizations. The polymers are useful as mineral dispersants, as water-treatme... | 06/26/2001 |
| 6235802 | High surface area adsorbents and method of preparation A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous copolymers eliminates the need for traditional organic swelling so... | 05/22/2001 |
| 6218491 | Colorimetric or fluorometric-detectable polymers containing pendant amine groups Polymers having amine-thiol terminal moieties are provided. The amine-thiol terminal moieties are imparted by using amine-thiols as chain transfer agents in aqueous addition polymerizations. The polymers are useful as mineral dispersants, as water-treatment ... | 04/17/2001 |
| 6214328 | Stiff-feel hair styling compositions A method for enhancing the performance of hair fixative resins in hair styling compositions by using selected polymers having certain compositions is disclosed. In particular, the present invention involves a method of improving the stiffness performance ... | 04/10/2001 |
| 6197522 | Method for identifying and quantifying polymers utilizing immunoassay techniques Disclosed is a method for quantitatively identifying polymers in an aqueous system using immunoassay techniques, wherein at least a portion of the polymers contain a detectable terminus. This is particularly useful in water treatment systems. Also disclos... | 03/06/2001 |
| 6147127 | High surface area adsorbents and methods of preparation A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous copolymers eliminates the need for traditional organic swelling so... | 11/14/2000 |
| 6117326 | Capillary electrochromatography separation media The present invention provides for the convenient preparation, purification, use and re-use of capillary electrochromatography columns that employ polymer gel materials as the separation media. The problems associated with employing crosslinked polymer ge... | 09/12/2000 |
| 6114294 | Copolymeric scale inhibitors for (Poly)phosphate scale control The invention relates to the inhibition of tripolyphosphate and pyrophosphate scales in aqueous systems involving adding to said aqueous system at least one copolymer comprising the following monomers in polymerized form: (I) 50-80% by weight of one or mo... | 09/05/2000 |
| 6106578 | Hair dye compositions and method of thickening the same The present invention provides hair dye compositions containing a certain rheology modifying system. The hair dye compositions have improved thickening and shear thinning properties. The present invention also provides a method of thickening a hair dye co... | 08/22/2000 |
| 6060526 | Mixed bed ion exchange resin system and method of preparation A method for preparing non-agglomerating mixed bed ion exchange resin systems without affecting the ion exchange kinetics of the anion exchange resin component of the mixed bed system is disclosed. Pretreatment of the anion exchange resin component with a... | 05/09/2000 |
| 6001940 | Process for preparing anhydride polymers A process for preparing anhydride polymers in aromatic hydrocarbon solvents using a dialkyl peroxide/amine compound initiator system is disclosed. The amine compound allows more efficient use of free-radical initiators while achieving high monomer convers... | 12/14/1999 |
| 5972121 | Decolorization of sugar syrups using functionalized adsorbents A process for decolorizing sugar solutions by contacting them with highly crosslinked, macroporous copolymers functionalized with weak-acid or weak-base ion exchange functional groups is disclosed. Treatment of sugar syrups using macroporous functionalize... | 10/26/1999 |
| 5955549 | Crosslinked poly(amino acids) and method of preparation Crosslinked poly(amino acids) useful as superabsorbent polymers and an improved process for preparing the crosslinked poly(amino acids) is disclosed. Use of polyaziridine and polyepoxide crosslinkers allows the production of superabsorbent polymers that i... | 09/21/1999 |
| 5916967 | Mixed surfactant and hydrophobically-modified polymer compositions Aqueous compositions comprising two or more surfactants and an associative thickener, where the type and amounts of the surfactants are selected to provide an aqueous solution having enhanced thickening properties, is disclosed. In particular, selected su... | 06/29/1999 |
| 5902833 | Mixed bed exchange resin system and method of preparation A method for preparing non-agglomerating mixed bed ion exchange resin systems without affecting the ion exchange kinetics of the anion exchange resin component of the mixed bed system is disclosed. Pretreatment of the anion exchange resin component with a... | 05/11/1999 |
| 5883061 | Low/non-phosphate detergent tablets comprising neutralized polymer binder incorporated therein A detergent tablet is disclosed which comprises at least 50 wt % of a non-phosphate builder and from 0 to 20 wt % of a phosphate builder, and has incorporated therein as binder from 0.3 to 5 wt % of a neutralised polymer of hydrophilic or hydrophobic mono... | 03/16/1999 |
| 5866664 | Process for preparing phosphonate-terminated polymers A process for efficiently utilizing phosphorous acid or salts thereof as a chain transfer agent in the polymerization of monomers, particulary unsaturated carboxylic acid monomers, is provided, where the polymerization is conducted at an in-process solids... | 02/02/1999 |
| 5817606 | Viscosity index improving additives for phosphate ester-containing hydraulic fluids Polymer compositions derived from selected alkyl (meth)acrylate ester monomers used in certain weight ratios to provide improved viscosity control and low temperature performance characteristics in phosphate ester aircraft hydraulic fluids is disclosed. P... | 10/06/1998 |
| 5770555 | High alkali-containing cleaning concentrates A process for preparing stable aqueous cleaning concentrate compositions containing high concentrations of alkali and polymers useful as scale-inhibiting cleaning additives is disclosed. Water-soluble polymer additives useful for preparing the stable clea... | 06/23/1998 |
| 5755972 | Method for metal sulfate scale control in harsh oilfield conditions A method for inhibiting barium sulfate precipitation in low pH aqueous fluids of underground petroleum-bearing formations by adding to such systems an effective amount of low molecular weight water-soluble polymer containing 5-35 weight percent sulfonic a... | 05/26/1998 |
| 5658872 | Polyaminoacids as builders for formulations of detergents Polyaminoacid builders or co-builders having the general formula: ##STR1## that are useful in the formulations of detergents are disclosed. Preferred detergent formulations contain from 5 to 50 percent by weight of the polyaminoacid builder, preferab... | 08/19/1997 |
| 5624880 | High density high surface area adsorbents A particulate adsorbent is the crosslinked polymerization product of a brominated vinyl aromatic monomer and a crosslinking monomer and exhibits a density greater than or equal to about 1.01 grams per cubic centimeter and a surface area greater than or eq... | 04/29/1997 |
| 5516432 | Method for prevention of scale formation in aqueous systems A process for stabilizing aqueous systems containing scale-forming salts by adding to such systems an effective amount of selected low molecular weight water-soluble polymers containing from 30 to 60 weight percent unsaturated sulfonic acid units, from 35... | 05/14/1996 |
| 5500126 | Process for removal of metal ions from aqueous solutions An improved process for removal of metal ions from aqueous solutions is disclosed. Removal of metal ions from aqueous solution, particularly from metal plating waste streams, is achieved by the combined use of polyamines, at levels less than the stoichiom... | 03/19/1996 |
| 5500212 | Crosslinked anion exchange particles and method for producing the particles New bile acid sequestrant polymer compositions and a process for preparing the polymers in particulate form, preferably in spherical form, are described. The polymer particles are prepared by crosslinking an amine-containing polymer with an amount of a po... | 03/19/1996 |
| 5460792 | Removal and destruction of halogenated organic and hydrocarbon compounds with porous carbonaceous materials A process for the removal and destruction of organic compounds in liquid and gaseous streams by complete oxidation of the organic compounds in the presence of a carbonaceous catalyst at temperatures below about 400° C. is disclosed. The process involves ... | 10/24/1995 |
