Untersuchungen über cyclische Azomethinderivate. (440. mitteilung über makromolekulare verbindungen)
摘要:
AbstractBei der Darstellung von Hexahydrotriazinderivaten wurden im Falle des trimeren Methylenanilins, des trimeren Methylen‐p‐chloranilins und des trimeren Methylen‐p‐bromanilins je zwei geometrisch isomere Formen isoliert. Umlagerungsbedingungen für die Isomeren werden beschrieben. Von N‐alkylierten Hexahydrotriazinen und trimeren Formaldoximderivaten konnten keine isomeren Formen gefunden werden.Durch Umsetzung mit Diphenylketen und Isolierung des resultierenden β‐Lactams wurde nachgewiesen, daß bei thermischer Aufspaltung des 1,3,5‐Triphenyl‐hexahydrotriazins monomeres Methylenanilin entsteht.Makromolekulare Polymerisationsprodukte des Methylenanilins und entsprechende Copolymerisate mit Vinylverbindungen konnten nicht dargestellt werden.
[EN] BORYLIMIDE CATALYSTS<br/>[FR] CATALYSEURS DE BORYLIMIDE
申请人:SCG CHEMICALS CO LTD
公开号:WO2020104779A1
公开(公告)日:2020-05-28
The present invention provides a borylimide catalyst and further relates to compositions comprising the borylimide catalysts and processes for the polymerisation of olefins (e.g. ethylene) using the borylimide catalysts or the compositions comprising the borylimide catalysts.
The present invention provides a borylimide catalyst and further relates to compositions comprising the borylimide catalysts and processes for the polymerisation of olefins (e.g. ethene) using the borylimide catalysts or the compositions comprising the borylimide catalysts.
wherein Y is BR 1R 2; Z is a polydentate ligand coordinated to M by at least 2 donor atoms Q, wherein each Q is independently selected from N, O, S and P; M is selected from titanium, zirconium and hafnium.
本发明提供了一种硼酰亚胺催化剂,并进一步涉及包含硼酰亚胺催化剂的组合物和使用硼酰亚胺催化剂或包含硼酰亚胺催化剂的组合物聚合烯烃(如乙烯)的工艺。
其中 Y 是 BR 1R 2;Z 是通过至少 2 个供体原子 Q 与 M 配位的多齿配体,其中每个 Q 独立选自 N、O、S 和 P;M 选自钛、锆和铪。
Sulfur-containing polymers from hexahydrotriazine and dithiol precursors as a carrier for active agents
申请人:International Business Machines Corporation
公开号:US10080806B2
公开(公告)日:2018-09-25
Polythioaminal polymers are made from hexahydrotriazine precursors and dithiol precursors. The precursors are blended together and subjected to mild heating to make the polymers. The polymers have the general structure
wherein each R1 is independently an organic or hetero-organic group, each R2 is independently a substituent having molecular weight no more than about 120 Daltons, X and Z are each a sulfur-bonded species, at least one of X and Z is not hydrogen, and n is an integer greater than or equal to 1. X and Z may be hydrogen or a functional group, such as a thiol-reactive group. The reactive thiol groups of the polythioaminal may be used to attach thiol-reactive end capping species. By using water soluble or water degradable dithiols, such as polyether dithiols, water soluble polythioaminals may be made. Some such polymers may be used to deliver therapeutics with non-toxic aqueous degradation products.
聚硫胺聚合物由六氢三嗪前体和二硫醇前体制成。将前体混合在一起并进行轻度加热,即可制成聚合物。聚合物的一般结构如下
其中每个 R1 独立地为有机或杂有机基团,每个 R2 独立地为分子量不超过约 120 道尔顿的取代基,X 和 Z 各自为硫键物种,X 和 Z 中至少有一个不是氢,n 为大于或等于 1 的整数。聚硫胺素的反应性硫醇基团可用于连接硫醇反应性末端封端物。通过使用水溶性或可在水中降解的二硫醇(如聚醚二硫醇),可制成水溶性聚硫胺素。其中一些聚合物可用于提供无毒水性降解产物的治疗药物。
Method of making sulfur-containing polymers from hexahydrotriazine and dithiol precursors
申请人:International Business Machines Corporation
公开号:US10702610B2
公开(公告)日:2020-07-07
Polythioaminal polymers are made from hexahydrotriazine precursors and dithiol precursors. The precursors are blended together and subjected to mild heating to make the polymers. The polymers have the general structure
wherein each R1 is independently an organic or hetero-organic group, each R2 is independently a substituent having molecular weight no more than about 120 Daltons, X and Z are each a sulfur-bonded species, at least one of X and Z is not hydrogen, and n is an integer greater than or equal to 1. X and Z may be hydrogen or a functional group, such as a thiol-reactive group. The reactive thiol groups of the polythioaminal may be used to attach thiol-reactive end capping species. By using water soluble or water degradable dithiols, such as polyether dithiols, water soluble polythioaminals may be made. Some such polymers may be used to deliver therapeutics with non-toxic aqueous degradation products.
聚硫胺聚合物由六氢三嗪前体和二硫醇前体制成。将前体混合在一起并进行轻度加热,即可制成聚合物。聚合物的一般结构如下
其中每个 R1 独立地为有机或杂有机基团,每个 R2 独立地为分子量不超过约 120 道尔顿的取代基,X 和 Z 各自为硫键物种,X 和 Z 中至少有一个不是氢,n 为大于或等于 1 的整数。聚硫胺素的反应性硫醇基团可用于连接硫醇反应性末端封端物。通过使用水溶性或可在水中降解的二硫醇(如聚醚二硫醇),可制成水溶性聚硫胺素。其中一些聚合物可用于提供无毒水性降解产物的治疗药物。
Oligomerization of olefins comprising at least three carbon atoms
申请人:Mihan Shahram
公开号:US20050119514A1
公开(公告)日:2005-06-02
A description is given of a process for the oligomerization of α-olefins having at least 3 carbon atoms, in which the olefin is brought into contact with a catalyst system obtainable from a chromium source, a 1,3,5-trialkyl-1,3,5-triazacyclohexane, where the alkyl radical has no α, β or γ branching, and at least one activator comprising a boron compound, with the molar ratio B:Cr being at least 5. The process allows the preparation of trimers of the α-olefin in high yield and with high selectivity.