会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明公开
    • PROCESS FOR THE PREPARATION OF POLYURETDIONE RESINS
    • 制备聚氨酯树脂的方法
    • EP2356166A1
    • 2011-08-17
    • EP09768587.9
    • 2009-12-10
    • E. I. du Pont de Nemours and Company
    • FLOSBACH, CarmenTEMELTAS, Engin
    • C08G18/79C09D167/02C08G63/685C08G18/32C08G18/72C09D175/04C08G59/42C09D163/00
    • C08G18/831C08G18/725C08G18/798C08G18/8016C08G59/4269C08G2150/20C08L75/04C09D5/03C09D163/00C09D167/00C09D175/04C08L2666/20
    • The present invention provides a process for the preparation of a carboxyl functional polyuretdione resin for the use in powder coating compositions comprising the steps a) reacting at least one isocyanate (NCO) functional uretdione with at least one alcohol in a ratio of free NCO groups to hydroxyl groups in a range of 0.5 :1 to 0.5 : 3, preferably 0.5 :1 to 0.5 : 2, and, b) reacting the resulted hydroxyl functional polyuretdione with di-and/or polyfunctional acid(s) and/or their anhydride(s), wherein the resulted carboxyl functional polyuretdione resin having a carboxyl value in the range of 20 to 300 mg KOH/g, particularly 50 to 250 mg KOH/g, the carboxyl value defined according to DIN EN ISO 2114. The process according to the invention provides a carboxyl functional polyuretdione resin for the use in powder coating compositions, particularly for the use as hardener (crosslinker, curing agent) providing a higher crosslinking densitiy and provide desired technological properties, in particular, thin films and high flexibility in combination with an excellent weather resistance of the coating layers.
    • 本发明提供了制备用于粉末涂料组合物的羧基官能聚脲二酮树脂的方法,其包括以下步骤:a)使至少一种异氰酸酯(NCO)官能脲二酮与至少一种醇以游离NCO基团与 在0.5:1-0.5:3,优选0.5:1-0.5:2的范围内的羟基官能团,和b)使得到的羟基官能聚脲二酮与二官能和/或多官能酸和/或它们的酸酐( s),其中得到的羧基官能聚脲二酮树脂的羧基值为20-300mg KOH / g,特别是50-250mg KOH / g,根据DIN EN ISO 2114定义的羧基值。根据 本发明提供了用于粉末涂料组合物中的羧基官能聚脲二酮树脂,特别是用作提供较高交联密度和提供所需技术性能的硬化剂(交联剂,固化剂)的 特别是薄膜和高柔韧性以及涂层的优异耐候性。