申请人:Cornell Research Foundation, Inc.
公开号:US05635571A1
公开(公告)日:1997-06-03
Polyoxazolines having the structural formula: ##STR1## wherein R is phenylene or alkylene containing 2 to 18 carbon atoms, R.sup.2 is C.sub.1-4 alkyl and R.sub.1 is selected from the group consisting of C.sub.1-12 alkyl, vinyl, isopropylidene, pentafluoroethyl, phenyl, hydroxyphenyl which is optionally interrupted by up to 20 ethylene oxide groups, C.sub.1-2 -alkoxyphenyl which is optionally interrupted by up to 20 ethylene oxide groups and .paren open-st.CH.sub.2 CH.sub.2 --O.paren close-st..sub.r CH.sub.3 in which r ranges from 1-20, X is NH.sub.2 or OH, n ranges from 2 to 50 and m ranges from 0 to 50, wherein R.sub.1 is hydroxyphenyl optionally interrupted by up to 20 ethylene oxide groups only when X is NH.sub.2, are polymerizable to form hyperbranched polymers which have a number average molecular weight ranging from 5,000 to 150,000, a weight average molecular weight ranging from 5,500 to 5,000,000 and a polydispersity ranging from 1.1 to 300 and which are very polar and highly wettable and are useful as adhesives, biodegradable materials, biomaterials, carriers for chemicals, carriers for image contrast agents, coatings, components of blends, components of medical imaging formulations, crosslinkers, dispersants, drug carriers, imaging materials, resists for lighography, slow release agents, vectors for gene therapy, and viscosity modifiers.
聚氧杂环烷具有结构式:##STR1## 其中R是含有2到18个碳原子的苯基或烷基,R.sup.2是C.sub.1-4烷基,而R.sub.1是从C.sub.1-12烷基,
乙烯基,异丙基,五
氟乙基,苯基,羟基苯基(可选地被多达20个乙氧基中断),C.sub.1-2-烷氧基苯基(可选地被多达20个乙氧基中断)和.paren open-ST.CH.sub.2 CH.sub.2 --O.paren close-ST..sub.r CH.sub.3中选择的一组,其中r范围为1-20,X为NH.sub.2或OH,n范围为2到50,m范围为0到50,其中仅当X为NH.sub.2时,R.sub.1是可选地被多达20个乙氧基中断的羟基苯基,可聚合形成具有数字平均分子量范围为5,000到150,000,重量平均分子量范围为5,500到5,000,000和聚分散度范围为1.1到300的超支化聚合物,其非常极性和高润湿性,可用作粘合剂,可
生物降解材料,
生物材料,
化学品载体,图像对比剂载体,涂层,混合物组分,医学成像制剂组分,
交联剂,分散剂,药物载体,成像材料,光刻胶,缓释剂,
基因治疗载体和粘度调节剂。