KR910018408A - Cyclodextrin Coated Solid Substrates and Methods for Making the Same - Google Patents

Abstract

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Description

Cyclodextrin Coated Solid Substrates and Methods for Making the Same

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Claims (9)

For solid substrates coated with polyisocyanate crosslinked cyclodextrin resins, 0.1 based on polyisocyanate crosslinked cyclodextrin resin products selected and processed from the group consisting of ceramic, glass, plastic, metal, textile and fibrous products And a solid substrate having a coating layer of from about 10% by weight, wherein the resin is a reaction product of cyclodextrin and polyisocyanate, having a water solubility of the reaction product of about 200 ppm or less and a solubility in at least one dipole aprotic solvent at least 1.0. A coated solid substrate, characterized in that it reacts at a molar ratio such that it is by weight percent. The coated solid substrate of claim 1, wherein the cyclodextrin is beta-cyclodextrin, or alpha-cyclodextrin, or gamma-cyclodextrin. The coated solid substrate of claim 1, wherein the substrate is selected from the group consisting of alumina, titania, silica, magnesia, boria, zirconia, and combinations thereof. The method of claim 1 wherein the polyisocyanate is toluene diisocyanate, p- and m-phenylene diisocyanate, tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate, 1,4-cyclohexylene diisocyanate, 4, 4'-methylene dicyclohexyl diisocyanate, 4,4'-methylene diphenyl diisocyanate, 3,3'-dimethyl-4,4'-diphenylmethane diisocyanate, 1,5-tetrahydramethylene diisocyanate, di Anisodine diisocyanate, bitorylene diisocyanate, naphthalene-1,4-diisocyanate, bis (2-methyl-3-isocyanatophenyl) methane, bis (3-methyl-4-isocyanatophenyl) methane, A coated solid substrate, characterized in that the diisocyanate is selected from the group consisting of 4,4′-diphenylpropane diisocyanate, and methylene-bridged polyphenyl polyisocyanate. A method of coating a solid substrate with a polyisocyanate crosslinked cyclodextrin resin, the method comprising: contacting a solution of polyisocyanate crosslinked cyclodextrin resin in a dipole aprotic solvent with the substrate to make a wet substrate; polyisocyanate crosslinked cyclo Removing the solvent from the wet substrate to provide a substrate coated with dextrin resin, the coating step, wherein the resin is a reaction product of cyclodextrin and polyisocyanate, the water solubility of the reaction product being less than about 200 ppm And reacting at a molar ratio such that the solubility in at least one dipole aprotic solvent is at least 0.1 weight percent. 6. The method of claim 5, wherein the cyclodextrin is beta-cyclodextrin, or alpha-cyclodextrin, or gamma-cyclodextrin. The method of claim 5 or 6, wherein the substrate is selected from the group consisting of glass, plastics, metals, textiles, fibrous products, alumina, titania, silica, magnesia, boria, toria, zirconia, and combinations thereof. Solid substrate coating method. 6. The polyisocyanate of claim 5, wherein the polyisocyanate is toluene diisocyanate, p- and m-phenylene diisocyanate, tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate, 1,4-cyclohexylene diisocyanate, 4 , 4'-methylene dicyclohexyl diisocyanate, 4,4'-methylene diphenyl diisocyanate, 3,3'-dimethyl-4,4'-diphenylmethane diisocyanate, 1,5-tetrahydramethylene diisocyanate, Dianisodine diisocyanate, bitolylene diisocyanate, naphthalene-1,4-diisocyanate, bis (2-methyl-3-isocyanatophenyl) methane, bis (3-methyl-4-isocyanatophenyl) methane, A 4,4'-diphenylpropane diisocyanate, and a diisocyanate selected from the group consisting of methylene- bridged polyphenyl polyisocyanate. 6. The method of claim 5, wherein the dipole aprotic solvent is selected from the group consisting of pyridine, dimethylformamide, dimethyl sulfoxide, n-methylpyrrolidone, hexamethylphosphoramide, and dimethyl acetamide. Method of coating solid substrate. ※ Note: The disclosure is based on the initial application.