Forming method for non-yellowing polyurethanes foam material and composition

• Main Authors: SHEN YONGQING, ZHANG YIHE, CHEN ZHIZHEN, WU JIAHONG, CAI FANZHENG
• Format: Patent
• Language: Chinese; English
• Published: 02.07.2008
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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 relates to a compound which adopts various prepolymer compound formed at least by aliphatic isocyanates, surfactant, catalyst, vesicant and water as non-yellowing polyurethane foam materials. Crosslinking agent used in the invention can be polyester-based diamine, ethanolamine or carbodiimide or the combination of polyester-based diamine, ethanolamine and carbodiimide. The foam material has high anti-yellowing performance in high heating or ultraviolet environment. The invention can be produced in a continuous production line or in dies.