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4301 results about "Water soluble polymers" patented technology

Synthetic water-soluble polymers are organic materials that dissolve, disperse, or swell in water and thus modify the physical properties of the resulting aqueous system. These macromolecules act as dispersants, suspending agents, thickeners, stabilizers, coagulants, flocculants, film-formers, binders, humectants,...

Conjugates of an IL-2 Moiety and a Polymer

Conjugates of an IL-2 moiety and one or more nonpeptidic, water-soluble polymers are provided. Typically, the nonpeptidic, water-soluble polymer is poly(ethylene glycol) or a derivative thereof. Also provided, among other things, are compositions comprising conjugates, methods of making conjugates, methods of administering compositions to an individual, nucleic acid sequences, expression systems, host cells, and methods for preparing IL-moieties.
Owner:NEKTAR THERAPEUTICS INC

Method of selective coating of articles

Articles such as medical devices are selectively coated with a lubricious coating. A temporary coating, formed from an aqueous solution of a water-soluble polymer of low to moderate molecular weight, is painted onto those portions of the article which are to remain free of any coating in the final product. Then, the entire article is coated with a material which forms a lubricious coating. The article is then soaked in water to loosen the coatings at the locations at which the temporary coating was applied. The coatings are cleanly removed from those locations, leaving an article with a lubricious coating in some portions, and which is uncoated in the remaining portions. The process can be used in coating portions of catheters, surgical gloves, contact lenses, and any other articles which require a lubricious coating only on a portion of the surface of the article.
Owner:BIOCOAT

Thiol selective water soluble polymer derivatives

The present invention provides water-soluble, polymer derivatives having a thiol-selective terminus suitable for selective coupling to thiol groups, such as those contained in the cysteine residues of proteins.
Owner:NEKTAR THERAPEUTICS INC

Ocular in-situ gel preparatino with proper phase conversion temperature

The gel preparation has the merits of both solution and gel. By means of the combination of different type poloxamers, ocular in-situ gel preparation containing medicine and water soluble polymer supplementary material is prepared. The preparation contains poloxamer 407 and poloxament 188 as well as water soluble polymer supplementary material less than 3%. The preparation has proper phase conversion temperatur and may form gel on the surface of cornea of living body after being applied in liquid state at room temperature. The present invention can delay the disappearance of medicine and raise the biological utilization in some local area and is suitable for various ocular medicines.
Owner:SHENYANG PHARMA UNIVERSITY
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