37 results about "Water soluble carbodiimide" patented technology

A molecule possessing a primary or secondary amino group and an additional functionality capable of providing a novel or improved property to a cellulose material has been permanently attached to the cellulose material in aqueous media using a water-soluble carbodiimide as the coupling agent / activator. One such molecule is 5-aminofluorescein (abbreviated as “A-fluo”) and one such cellulose material is a papermaking pulp. Papers made from a pulp furnish containing, for example, 0.01 wt. % of the “A-fluo”-attached pulp show an embedded marker feature authenticable upon UV or visible light excitation. The “A-fluo”-attached pulp can also be used for the marking and identification of a pulp furnish.

The present invention relates to polymeric antitumor agent which is formed in polymeric micelle complex by intermolecular bonding or mutual interaction between styrene maleic acid copolymer (SMA) and low molecule antitumor agent which is anthracyclins drug such as pirarubicin, doxorubicm, epirbicin, daunorbicin, acralbicin, or alkaloid antitumor agent such as cis-platinum, and taxol These polymeric antitumor agents may improve specificity to cancer cells so that it improves antitumor effect, while it may not be concentrated at normal organ or tissue, so that adverse effect may be diminished. These polymeric antitumor agents may be prepared by dissolving SMA and low molecule antitumor agent in aqueous solution, then in the presence of aqueous soluble carbodiimide, amino acids, or polyamine, adjusting pH to form micelle complex and recovering polymer fraction.

Provided is an aluminum fin material in which the hydrophilicity of a fin material surface is sustained for a long period time. A fin material (10A) having a hydrophilic film layer (2) and a lubricant film layer (3) provided to the surface of an aluminum plate (1) in the stated order, the fin material being characterized in that: the hydrophilic film layer (2) is composed of a polymer configured solely from a monomer having a carboxyl group, a copolymer containing a monomer having a carboxyl group, or a resin substance containing a hydrophilic resin as a mixture thereof; and the lubricant film layer (3) is composed of a resin composition in which a crosslinking agent (6) has a solids ratio of 0.2 to 70 mass%, the lubricant film layer (3) containing one or more lubricant resins selected from the group consisting of polyethylene glycol, carboxymethyl cellulose, and an alkali metal salt of carboxymethyl cellulose, and one or more crosslinking agents (6) selected from the group consisting of a water-soluble epoxy resin, a water-soluble carbodiimide compound, a water-dispersible carbodiimide compound, and a water-soluble oxazoline group-containing resin.

Bioimplants and methods of making the bioimplants are provided. The bioimplants comprise biological tissues having conjugated thereto adjunct molecules. The biological tissues are sterilized with a chemical sterilizing agent, such as a water soluble carbodiimide. The processes of making the bioimplants include a process in which an adjunct molecule is conjugated to a biological tissue during the sterilization process.

A method for preparation of hyaluronic acid -chitose cross compatible material belongs to the biochemical technical sphere. The invention selects water-soluble carbodiimide as cross linker and N-hydroxy succinimide as active agent, adjusts PH value with N,N,N',N'-tetramethylethylenediamine, then makes the hyaluronic acid and the chitose perform cross-linking reaction, finally prepares the hyaluronic acid -chitose cross compatible material by dialysis and cryodesiccation. The material has a good application prospect in domains of drug embedment, tissue pack, film material and so on.