四种AB 2单体,N- [3-或4-双(4-羟基苯基)甲苯酰基] -4-氯邻苯二甲酰亚胺和N- {3-或4- [1,1-双(4-羟基苯基)]乙基苯基}-制备了4-氯邻苯二甲酰亚胺,并用于合成带有羟基端基的超支化聚醚酰亚胺。这些超支化聚醚醚具有中等分子量,分布范围广,并且在177至230°C之间显示出玻璃化转变温度(T g s)。热重分析测量显示分解温度为5%的失重温度(T d 5%),范围为240至281°C。分析使用11 H NMR光谱表明四种类型的超支化聚醚酰亚胺具有相似的支化度(约60%)。这些聚合物通过在羟基端基上的酰化或亲核取代反应进行改性。转化效率取决于改性反应的类型,改性剂和反应条件。通过支化端基,可以提高超支化聚醚酰亚胺的热稳定性和溶解性。
四种AB 2单体,N- [3-或4-双(4-羟基苯基)甲苯酰基] -4-氯邻苯二甲酰亚胺和N- {3-或4- [1,1-双(4-羟基苯基)]乙基苯基}-制备了4-氯邻苯二甲酰亚胺,并用于合成带有羟基端基的超支化聚醚酰亚胺。这些超支化聚醚醚具有中等分子量,分布范围广,并且在177至230°C之间显示出玻璃化转变温度(T g s)。热重分析测量显示分解温度为5%的失重温度(T d 5%),范围为240至281°C。分析使用11 H NMR光谱表明四种类型的超支化聚醚酰亚胺具有相似的支化度(约60%)。这些聚合物通过在羟基端基上的酰化或亲核取代反应进行改性。转化效率取决于改性反应的类型,改性剂和反应条件。通过支化端基,可以提高超支化聚醚酰亚胺的热稳定性和溶解性。
Polycyclic dihydroxy compound and methods for preparation
申请人:Raj Tilak T.
公开号:US20070123713A1
公开(公告)日:2007-05-31
A process of forming a polycyclic dihydroxy compound is described. The polycyclic dihydroxy compound has Formula (I)
wherein R
1
, R
2
and R
3
are independently at each occurrence selected from the group consisting of a cyano functionality, a halogen, an aliphatic functionality having 1 to 10 carbons, a cycloaliphatic functionality having 3 to 10 carbons, and an aromatic functionality having 6 to 10 carbons; and wherein each occurrence of “n”, “m”, and “p” independently has a value of 0, 1, 2, 3, or 4. Also described are polycyclic dihydroxy compounds of Formula (I) in which the phthalimide group is meta to the triaryl-substituted carbon.
Synthesis and Characterization of Hyperbranched Aromatic Poly(ether imide)s
作者:Xiuru Li、Yuesheng Li、Yuejin Tong、Linqi Shi、Xiaohang Liu
DOI:10.1021/ma021620i
日期:2003.7.1
The four AB2monomers, N-[3- or 4-bis(4-hydroxyphenyl)toluoyl]-4-chlorophthalimide and N-3- or 4-[1,1-bis(4-hydroxyphenyl)]ethylphenyl}-4-chlorophthalimides, were prepared and used for synthesis of hyperbranchedpoly(ether imide)s bearing hydroxyl end groups. These hyperbranchedpoly(ether imide)s had moderate molecular weights with broad distributions and showed glass-transition temperatures (Tgs)
四种AB 2单体,N- [3-或4-双(4-羟基苯基)甲苯酰基] -4-氯邻苯二甲酰亚胺和N- 3-或4- [1,1-双(4-羟基苯基)]乙基苯基}-制备了4-氯邻苯二甲酰亚胺,并用于合成带有羟基端基的超支化聚醚酰亚胺。这些超支化聚醚醚具有中等分子量,分布范围广,并且在177至230°C之间显示出玻璃化转变温度(T g s)。热重分析测量显示分解温度为5%的失重温度(T d 5%),范围为240至281°C。分析使用11 H NMR光谱表明四种类型的超支化聚醚酰亚胺具有相似的支化度(约60%)。这些聚合物通过在羟基端基上的酰化或亲核取代反应进行改性。转化效率取决于改性反应的类型,改性剂和反应条件。通过支化端基,可以提高超支化聚醚酰亚胺的热稳定性和溶解性。