Patent ID: 8017685
Filing Date: 2011-09-13
Classification: C08G,C08J,Y10T

Abstract:
1. A method for manufacturing an antistatic polyurethane glove comprising the steps of: a) reacting 1 to 5 parts by weight of a polyisocyanate, 15 to 20 parts by weight of a polyester polyol and 0.1 to 3 parts by weight of an ionic compound as another polyol to prepare a polyurethane prepolymer; b) adding a solvent to the extent that the viscosity of the prepolymer before dispersion is 20,000 cps or below; c) neutralizing the polyurethane prepolymer with trialkylamine in a molar amount greater than that of the ionic compound, dispersing it into 25 to 60 parts by weight of water and reacting it with 0.089 to 0.1 part by weight of an amine as a chain extender, to obtain an aqueous emulsion composition of polyurethane; d) removing said solvent; e) optionally adding a polyfunctional one-component crosslinking agent into the aqueous emulsion composition of polyurethane; f) dipping a hand shaped mold into a salt solution and drying it to form a thin salt film thereon; g) dipping the hand shaped mold having the salt film into the composition resulting from step d) thereby forming a salt-coagulated mold; h) washing, drying and crosslinking the salt-coagulated hand shaped mold; and i) transforming said hand shaped mold into a polyurethane glove having a surface resistance after washing within the range from 5×10