磺化杯芳烃改性聚氨酯复鞣剂的合成及其性能

Synthesis and properties of sulfonated calixarene modified polyurethane retanning agent

以异氟尔酮二异氰酸酯(IPDI)、聚乙二醇(PEG-1000)、2,2-二羟基丁酸(DMBA)为原料,四磺酸-四羟基杯[4]芳烃(SCA)为改性剂,制备出了一种磺化杯芳烃改性聚氨酯(SCA-WPU),并对制备过程中的加料方式、改性剂用量和R值进行了优化.随着磺化杯芳烃的引入,聚氨酯的分散性和热稳定性得到提高.将改性聚氨酯用于山羊蓝湿皮的复鞣.结果表明:改性聚氨酯可提高复鞣后坯革的增厚率和物理机械性能,同时还可提高染料吸收率,使染色加脂后的废液更易被降解.

This paper prepared sulfonated calixarene modified polyurethane(SCA-WPU)with isophorone diisocyanate(IPDI),polyethylene glycol(PEG-1000),2,2-dihydroxybutyric acid(DMBA)as raw materials and tetrasulfonic-tetrahydroxy calix[4]arene(SCA)as modifier.The way of adding raw materials,the amount of modifier and the R value in the preparation process were optimized.The dispersibility and thermal stability of the polyurethane improved obviously due to the introduction of SCA.The modified polyurethane was applied to the retanning of goat wet blue skin.The results shows that the modified polyurethane can improve filling thickening rate and physical-mechanical properties of the curst after retanning,and also increase the dye absorption rate,so that the wastewater after dyeing and fatliquoring is more easily degraded.