Polyurethane with amino-containing side chain and preparation method thereof

• Main Authors: CHEN HONGXIANG, TAO WANGWANG, ZHOU YU
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to polyurethane with an amino-containing side chain and a preparation method of the polyurethane. According to the technical scheme, the preparation method comprises the following steps: step 1, adding polymer dihydric alcohol and diisocyanate into an aprotic solvent, stirring for 0.5-6 hours under the condition of N2 atmosphere and 50-100 DEG C, then adding a chain extender, and stirring for 0.5-12 hours under the condition of 50-100 DEG C to prepare polyurethane containing double bonds; and step 2, adding a compound containing sulfydryl and amino and a photoinitiator into the polyurethane containing the double bonds prepared in the step 1, and reacting for 5 seconds to 6 hours under the conditions of room temperature and ultraviolet irradiation, so as to prepare the polyurethane containing the amino on the side chain. The preparation method has the characteristics of simple process, low cost, high efficiency, easiness in regulation and control of polymer structure, low toxicity, enviro