Multi-chromatographic colored polyurethane sponge based on food coloring

• Main Authors: CUI HUIMING, NI ZHANGGEN, ZHANG RUIPING, ZHANG HENG, LIN TAO
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• 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; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses a multichromatographic colored polyurethane sponge based on food coloring, and relates to the field of household sponges. The colored polyurethane sponge is formed by polymerizing isocyanate and polyether polyol, and comprises the following components: polyether polyol, MDI (Diphenylmethane Diisocyanate) or TDI (Toluene Diisocyanate), a chain extender, a high-efficiency foam stabilizer, a high-efficiency composite catalyst, an external foaming agent, water and food coloring, the food coloring is one or a mixture of more of lemon yellow, carmine and brilliant blue in different proportions; when the isocyanate and the polyether polyol are polymerized, a food coloring aqueous solution is added to replace water in a polymeric sponge polymerization foaming formula, and the food coloring aqueous solution and other components are prepared into a polymerization raw material for polymerization and foaming. The method has the advantages that the edible pigment is dissolved and then directly adde