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6843841 |
Preventing flow through subterranean zones
The present invention provides methods of preventing the flow of water or gas or both through a subterranean zone having a high temperature and a depth such that a long pumping time is required to...
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6703444 |
Process for cross-linking hyaluronic acid to polymers
The present invention relates to a process for the production of hyaluronic acid (HA) derivatives. In particular, the process relates to multiple cross-linked hyaluronic acid derivatives, to navel...
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6688041 |
Pigment concentrates for coloring seeds
The present invention relates to the use of a pigment form or pigment concentrate comprising of an organic pigment, and optionally an inorganic filler and/or an organic additive for coloring of...
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6638538 |
Hyaluronic acid gel composition, process for producing the same, and medical material containing the same
A hyaluronic acid gel composition comprising hyaluronic acid and a polymer, which is substantially unmodified with a chemical cross-linking agent or a chemical modifying agent and which has a...
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6509397 |
Plastic material made from a polymer blend
A plastic material made from a polymer blend, is characterized in that said material contains at least one lignin-based natural polymer, in particular based on alkali lignin produced during the...
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6277899 |
Biodegradable polymeric composition
A polymeric composition comprising a filler melt-dispersed in a matrix comprising, a destructurized starch component; a synthetic thermoplastic polymeric component selected from the group...
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6274653 |
Bonding agent preparations for paints, the production and use thereof
A plasticized composition comprising 40 to 82 percent cellulose nitrate, having nitrogen content of less than 12.6% relative to the weight of said cellulose nitrate, and 18 to 60 percent formylated...
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5989329 |
Biostable water-borne paints
Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of...
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5879440 |
Biostable water-borne paints and processes for their preparation
Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of...
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5646205 |
Ion complex membrane and a method for producing same
An ionomer for an ion complex membrane useful for the separation of water-organic solvent by osmosis or low pressure osmosis as well as by pervaporation and a method for producing ion complex...
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5578661 |
Gel forming system for use as wound dressings
A gel forming system comprising an aqueous mixture of a first component of at least one water-soluble polymer in an amount sufficient to increase the initial viscosity of the mixture and impart...
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5578073 |
Thromboresistant surface treatment for biomaterials
A biomaterial with a thromboresistant surface and a method for forming same are provided. The thromboresistant surface is comprised of a distinct coating layer of a chitosan-based membrane and a...
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5414028 |
Carbohydrate substituted dibenzo[d,f][1,3,2]dioxaphosphepin stabilizers
Carbohydrate substituted dibenzo[d,f][1,3,2]dioxaphosphepin compounds of formula I ##STR1## where A is a carbohydrate residue are effective stabilizers for polymers processed at elevated...
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5397520 |
Modified agar and process for preparing modified agar for use ceramic composition to add green strength and/or improve other properties of a preform
A gel-forming composition is used in a process for molding a ceramic composition. The gel-forming composition, such as agar, is improved with a gel-enhancing agent, e.g. polyethyleneimine. As a...
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5356962 |
Carbohydrate substituted dibenzo[D,G][1,3,2]dioxaphosphocin stabilizers
Carbohydrate substituted dibenzo[d,g][1,3,2]dioxaphosphocin compounds of formula I ##STR1## where A is a carbohydrate residue are effective stabilizers for polymers processed at elevated...
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5346935 |
Hydrogel
The hydrogel of the invention contains polyvinyl alcohol (a hydrogel support), and a high water-absorbent resin and/or a hydrophilic high molecular compound, which are capable of containing a large...
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5013769 |
Method of making a hydrogel-forming wound dressing or skin coating material
The invention disclosed is a hydrogel-forming wound dressing or skin coating material suitable for household and veterinary use, consisting substantially entirely of wound-compatible and...
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4952618 |
Hydrocolloid/adhesive composition
Hydrocolloid adhesive compositions are disclosed comprising a rubbery elastomeric base having dispersed therein hydrocolloid particles, at least some of which are polycationic hydrocolloid...
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4944767 |
Synthetic material apt to stably adsorb high quantities of heparin, and process for the production thereof
Synthetic material apt to stably adsorb high quantities of heparin, consisting of a polyurethane resin, cross-linked with copolymeric chains in correspondence of at least part of its own urethane...
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4920158 |
Hydrogel-forming wound dressing or skin coating material
The invention disclosed is a hydrogel-forming wound dressing or skin coating material suitable for household and veterinary use, consisting substantially entirely of wound-compatible and...
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4795741 |
Compositions for therapeutic percutaneous embolization and the use thereof
Percutaneous emboli are formed for therapeutic and/or corrective reasons by using a composition which includes crosslinked gells of hyaluronic acid (HA), hylan (HY) or mixed crosslinked gels of HA...
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4772646 |
Concentrated hydrophilic polymer suspensions
The present invention relates to a liquid suspension of a high molecular weight, water-soluble polymer or water-soluble salt prepared by admixing and water-soluble polymer with a hydrocarbon...
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4619955 |
Isocyanate functional urethanes as flexibilizing additives in coating vehicles
A flexibilizing additive compatible with a wide variety of polymeric vehicles is provided wherein the additive comprises the reaction product of (a) an aliphatic polyisocyanate; (b) at least one...
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4501835 |
Polyacrylic acid/chitosan polyelectrolyte complex
A novel composition of matter comprising a polyacrylic acid/chitosan complex. This complex is particularly useful as a membrane or filter.
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4500676 |
Hyaluronate modified polymeric articles
Polymeric materials (and articles made therefrom) including polyurethanes, polyesters, polyolefins, polyamides, polysiloxanes, vinylic and acrylic polymers are rendered biocompatible by including...
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4487865 |
Polymeric articles modified with hyaluronate
Polymeric materials (and articles made therefrom) including polyurethanes, polyesters, polyolefins, polyamides, polysiloxanes, vinylic and acrylic polymers are rendered biocompatible by including...
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4443608 |
(+),(-)-Tropicamide O-β-B-glucuronic acid, its diastereomers, and salts thereof
An in vitro enzymatic process which efficiently converts (+,-)-tropicamide to essentially pure (+), (-)-tropicamide O-β-D-glucuronide. This product is then separated, advantageously, into the...
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4366303 |
Particulate resoles with improved cure rate and sinter resistance
Particulate resoles are produced by mixing phenol, formaldehyde and amine in an aqueous medium containing a protective colloid. The resoles exhibit improved cure rate and sinter resistance when an...
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4342672 |
Use of Heteropolysaccharide S-156 in latex paint
Water-based paints exhibiting improved stability and application properties are obtained by adding to 100 gallons (379 liters) of paint from 1 to 7 pounds (0.45 to 3.2 kg) of Heteropolysaccharide...
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4244826 |
Gelled acidic well treating composition and process
Gelled acidic compositions suitable for either matrix-acidizing or fracture-acidizing of subterranean formations comprising water, a water-dispersible polymer selected from cellulose ethers and...
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RE30459 |
Nitrite esters of polyhydroxy polymers
A polysaccharide or polyvinyl alcohol containing a mixture of nitrite ester groups with sulfate or nitrate ester groups with the mixture of ester groups being substantially uniformly distributed...
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4172057 |
Amino-resin compositions
An amino-resin composition, in particular urea formaldehyde and/or melamine formaldehyde, in the form of fibres, having incorporated therein at least one additional compound which contains at least...
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4020040 |
Coloring compositions of powder form
A coloring composition of powder form comprising (a) a pigment, (b) a vinyl chloride copolymer of an average degree of polymerization of 100 - 2000 and in which the other monomer copolymerized with...
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3962158 |
Hydrophilic polymer membranes of polyvinyl alcohol and chitosan
Hydrophilic polymer membranes useful as semi-permeable membranes or ultrater membranes, are manufactured by forming a film from an aqueous solution containing polyvinyl alcohol and a chitosan salt...
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3941767 |
Method of preparing powdered elastomer compositions
An improved process is used to prepare encased powdered elastomers which replace slab rubber in injection molding formulations and thereby eliminates the need for milling and high shear mixing. A...
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3914205 |
Reducing polymer
A reducing polymer comprising dihydrolipoic acid bound to a polymeric carrier, the carrier being advantageously a derivative of cellulose, of Sephadex, of Sepharose, of polyacrylamide or of...
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3719617 |
TEXTILE SIZING COMPOSITION CONTAINING HIGHLY WATER SOLUBLE DEXTRIN PHOSPHATE
Compositions for sizing textiles are provided which contain a major proportion of a low molecular, highly water soluble dextrin phosphate and a minor proportion of a high molecular nitrogen...
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3714087 |
POWDERED RESORCINOL-FORMALDEHYDE TREATED POLYSACCHARIDE-REINFORCED ELASTOMER MASTERBATCHES, COMPOUNDS, AND RESULTING VULCANIZED RUBBERS
Powdered elastomer masterbatches are prepared by grinding dried rubber curds which contain highly effective reinforcing agents. Such finely comminuted elastomer masterbatches provide stable...
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3467647 |
CATIONIC AND ANIONIC SUBSTITUTED POLYSACCHARIDES AND PROCESS FOR PREPARING SAME
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3453260 |
CYCLIC ANHYDRIDE ESTERS OF CYCLODEXTRIN
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3298845 |
Cyanoethylated hydroxyalkylsucrose and its preparation
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3282922 |
Cyanoethylsucrose acylates
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3242120 |
Self-supporting gel shaped structures
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3108897 |
Process for coloring glass fabrics
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3075941 |
Copolymer comprising a vinyl polysiloxane, an unsaturated polyester ester resin and a vinyl compound, and coating composition thereof
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3067152 |
Aqueous solution of polyvinyl alcohol containing insoluble starch derivative and proces of preparing fibers therefrom
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3002881 |
Method of increasing the wet strength of cellulosic material and article formed thereby
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2881143 |
Water-emulsion paints containing cyanoethylated starch
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3830762 |
Title is not available
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3809661 |
Title is not available
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