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
    • 67. 发明授权
    • 2,2'-Bis(phenylethynyl-5,5'-diaminobenzidine
    • 2,2 {40-双(苯基乙炔基-5,5(40-二氨基联苯胺)
    • US3944614A
    • 1976-03-16
    • US526192
    • 1974-11-22
    • Frederick L. HedbergFred E. Arnold
    • Frederick L. HedbergFred E. Arnold
    • C08G73/06C07C87/54C07D241/42
    • C08G73/0694
    • Quinoxaline polymers are synthesized by solution polycondensation of 2,2'-bis(phenylethynyl)-5,5'-diaminobenzidine with aromatic bis-benzils. Upon heating the polymers so prepared at a temperature ranging from about 240.degree. to 300.degree.C, they undergo a thermal intramolecular cyclization reaction, thereby providing cured, thermally stable, highly fused quinoxaline composition. Because of their solubility in aprotic solvents and the mechanism whereby they are cured, the quinoxaline polymers are particularly suitable for use in high temperature applications such as in the fabrication of plastic composites and protective coatings.
    • 喹喔啉聚合物通过2,2'-双(苯基乙炔基)-5,5'-二氨基联苯胺与芳族双 - 苯偶姻的溶液缩聚合成。 在加热在约240℃至300℃的温度范围内制备的聚合物时,它们进行热分子内环化反应,从而提供固化的,热稳定的高度稠合的喹喔啉组合物。 由于它们在非质子溶剂中的溶解性及其固化机理,所以喹喔啉聚合物特别适用于高温应用,如塑料复合材料和保护涂层的制造。
    • 68. 发明授权
    • Rigid-rod benzobisazole copolymer containing cyclic phosphate ester
    • 含有环磷酸酯的刚性棒状苯并双酚共聚物
    • US5175232A
    • 1992-12-29
    • US886999
    • 1992-05-22
    • Fred E. ArnoldJom P. Chen
    • Fred E. ArnoldJom P. Chen
    • C08G73/06C08G73/18C08G73/22C08G75/32
    • C08G73/18C08G73/06C08G73/22C08G75/32
    • Rigid-rod aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein n has a value of about 0.10 to 0.99, m is 1.0-n, Ar is a para-ordered divalent aromatic moiety, as defined hereinafter, and wherein Ba is a benzobisazole moiety of the formula: ##STR2## wherein X is --O--, --S-- or --NH. Ar can be any para-ordered divalent moiety such as, for example, 1,4-phenylene, 4,4'-biphenylene, 4,4"-terphenylene, and the like, as well as substituted divalent moieties, such as, for example: ##STR3## wherein R is Q or an alkyl group having 1 to 4 carbon atoms, wherein Q is ##STR4## wherein Z is --O-- or --S--; ##STR5## wherein R is as defined above, or ##STR6## wherein R.sup.1 and R.sup.3 are --H or -phenyl, R.sup.2 is --H or ##STR7## wherein Q is as defined above, and R.sup.4 is R.sup.2 or ##STR8##
    • 具有下式重复单元的刚性 - 芳族芳族杂环共聚物:其中n具有约0.10至0.99的值,m为1.0-n,Ar为如下文所定义的有序二价芳族部分,并且其中Ba 是下式的苯并二唑部分:其中X是-O - , - S-或-NH。 Ar可以是任何对位二价部分,例如1,4-亚苯基,4,4'-亚联苯基,4,4“ - 三亚苯基等,以及取代的二价部分, 例如:其中R是Q或具有1至4个碳原子的烷基,其中Q是其中Z是-O-或-S-; 其中R如上所定义,或者其中R 1和R 3是-H或 - 苯基,R 2是-H或者其中Q如上所定义,并且R 4是R 2或R 3,