摘要:
The present invention provides a polyimide having the formula (II) formed by reacting a dianhydride with the diamine having the formula (I). The polyimide provided by the present invention serves as a material for preparing the liquid crystal aligning film, wherein the liquid crystal aligning film could achieve the pre-tilt angle of 88-90° by containing only less than 5% of the diamine having the formula (I), which could highly lower down the manufacturing cost.
摘要:
This invention is directed to a polyamic acid represented by the following formula (I), and an electrode having an active layer made from the polyamic acid of formula (I).
摘要:
The present invention provides the diaminophenyladamantane derivatives with antitumor activities and the preparation method therefore. The method includes a step of reacting an aromatic diol with at least one 5-halo-2-nitrophenol in the presence of at least one inorganic base in an organic solvent with a relatively high boiling point.
摘要:
The present invention provides a series of easily processable poly(ether-imide)s that are organic-soluble and afford low dielectric constants of films, their organic solutions and their manufacturing process. The poly(ether-imide)s is prepared from a dianhydride and a diamine, wherein the diamine is a diamine having tert-butyl group, i.e. 2,6-di-tert-butyl-4-(4-aminopheny)-1-(4-aminophenoxy)benzene the present invention is also direction to synthesis of this special diamine.
摘要:
An electrode for an electrochemical device includes a conductor and an active layer. The active layer is formed on the conductor and includes a polymer with a functional group represented by the following formula (A) or (B), and a carboxylated material containing a carboxylic acid group.
摘要:
The present invention provides the diaminophenyladamantane derivatives with antitumor activities and the preparation method therefore. The method includes a step of reacting an aromatic diol with at least one 5-halo-2-nitrophenol in the presence of at least one inorganic base in an organic solvent with a relatively high boiling point.
摘要:
This invention is directed to a polyamic acid represented by the following formula (I), and an electrode having an active layer made from the polyamic acid of formula (I).
摘要:
The present invention provides a series of easily processable poly(ether-imide)s that are organic-soluble and afford low dielectric constants of films, their organic solutions and their manufacturing process. The poly(ether-imide)s is prepared from a dianhydride and a diamine, wherein the diamine is a diamine having tert-butyl group, i.e. 2,6-di-tert-butyl-4-(4-aminopheny)-1-(4-aminophenoxy)benzene the present invention is also direction to synthesis of this special diamine.