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
    • 6. 发明授权
    • Aqueous anticorrosion primers based on polyvinylbutyral
    • 基于聚乙烯醇缩丁醛的水性防腐底漆
    • US06433079B1
    • 2002-08-13
    • US09579172
    • 2000-05-25
    • Martin GerlitzMaximilian FriedlThomas FischerErnst SupperManfred Krassnitzer
    • Martin GerlitzMaximilian FriedlThomas FischerErnst SupperManfred Krassnitzer
    • C08F1606
    • C08F8/30C08F16/06
    • Water-dilutable polyvinylbutyral dispersions obtainable by a two-stage reaction in the first stage of which at least one tertiary alkanolamine A and at least one diisocyanate B are reacted to the theoretically calculated NCO content and the amounts of components A and B are chosen such that the amount of substance of the diisocyanates B is from 0.8 to 1.3 times the amount of substance of the reactive hydroxyl groups in A and thereafter in the second stage a polyvinylbutyral C dissolved in a solvent which is inert towards isocyanates is reacted with the adduct AB from the first step to form the product ABC until all of the isocyanate groups have undergone complete reaction, the number of hydroxyl groups in C being at least ten times the number of isocyanate groups in the reaction product AB.
    • 在第一阶段可通过两阶段反应获得的水可稀释的聚乙烯醇缩丁醛分散体,其中至少一种叔烷醇胺A和至少一种二异氰酸酯B与理论计算的NCO含量反应,并且组分A和B的量被选择为使得 二异氰酸酯B的物质的量为A中反应性羟基的物质量的0.8〜1.3倍,此后在第二阶段中,溶解在对异氰酸酯惰性的溶剂中的聚乙烯醇缩丁烷C与加合物AB反应 形成产物ABC的第一步,直到所有的异氰酸酯基团已经完全反应,C中的羟基数量是反应产物AB中异氰酸酯基团数量的至少十倍。