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    Process for the formation and recovery of poly(bisbenzimidazoenzophenanthroline)
    1.
    发明授权
    Process for the formation and recovery of poly(bisbenzimidazoenzophenanthroline) 失效
    聚（双苯并咪唑并苯并菲菲）的形成和回收方法

    公开(公告)号：US4005058A

    公开(公告)日：1977-01-25

    申请号：US655339

    申请日：1976-02-05

    Applicant: Edward C. Chenevey ,  Harry T. Hanson

    Inventor： Edward C. Chenevey ,  Harry T. Hanson

    IPC: C08G73/20 ,  C08G20/00 ,  C08G20/20 ,  C08G20/32 ,  C08G33/02

    CPC classification number: C08G73/20

    Abstract: An improved overall process is provided wherein poly(bisbenzimidazobenzophenanthroline) is formed on an expeditious basis and is recovered from the reaction mass in substantially pure form. Appropriate quantities of 1,4,5,8-tetracarboxy naphthalene dianhydride and 3,3',4,4' -tetraaminobiphenyl are condensed as defined) in a reaction zone while dissolved in molten antimony trichloride, and the resulting reaction mass containing the dissolved product is discharged into a precipitation zone containing hydrochloric acid (as defined). The resulting solid product is separated and dried. The liquid portion which is separated from the solid product contains antimony trichloride dissolved in hydrochloric acid and is subjected to distillation which substantially separates these components. The antimony trichloride is recycled to the reaction zone, and the hydrochloric acid is recycled to the precipitation zone.

    Abstract translation: 提供了一种改进的总体方法，其中快速形成聚（双苯并咪唑基苯并菲罗啉），并以基本上纯的形式从反应物质中回收。 合适量的1,4,5,8-四羧基萘二酐和3,3'，4,4'-四氨基联苯在反应区中缩合，同时溶解在熔融的三氯化锑中，所得反应物质含有溶解的 将产物排入含有盐酸的沉淀区（定义）。 将所得固体产物分离并干燥。 与固体产物分离的液体部分含有溶解在盐酸中的三氯化锑，并进行基本分离这些组分的蒸馏。 将三氯化锑再循环至反应区，将盐酸再循环至沉淀区。

    Permselective polymeric membrane prepared from polybenzimidazoles
    2.
    发明授权
    Permselective polymeric membrane prepared from polybenzimidazoles 失效
    由聚苯并咪唑制备的选择性聚合物膜

    公开(公告)号：US3951920A

    公开(公告)日：1976-04-20

    申请号：US288389

    申请日：1972-09-12

    Applicant: Masao Senoo ,  Shigeyoshi Hara ,  Shuji Ozawa

    Inventor： Masao Senoo ,  Shigeyoshi Hara ,  Shuji Ozawa

    IPC: B01D71/62 ,  C08G73/18 ,  C08G33/02 ,  C08G33/04

    CPC classification number: C08G73/18 ,  B01D71/62 ,  Y10S524/909

    Abstract: This invention provides a novel permselective polymeric membrane excellent in permselectivity which allows permeation of water in an aqueous solution at a high rate but is highly preventive of permeation of solutes, and a process for the preparation of such permselective membrane, said polymeric membrane consisting essentially of a linear polymer containing N-aryl-substituted-benzimidazole units as the main-chain-constituting units.

    Abstract translation: 本发明提供了一种选择性优异的新型选择性选择性聚合物膜，其允许水以高速率渗透水溶液，但是高度防止溶质渗透，以及制备这种选择性渗透膜的方法，所述聚合物膜基本上由 含有N-芳基取代的苯并咪唑单元作为主链构成单元的线性聚合物。

    Process for preparing triketoimidazolidines and product
    4.
    发明授权
    Process for preparing triketoimidazolidines and product 失效
    制备三酮咪唑烷和产物的方法

    公开(公告)号：US3887507A

    公开(公告)日：1975-06-03

    申请号：US21869172

    申请日：1972-01-18

    Applicant: REICHHOLD ALBERT CHEMIE AG

    Inventor： REESE JOHANNES ,  KRAFT KURT

    IPC: C07D233/96 ,  C08G18/34 ,  C08G18/38 ,  C08G18/83 ,  C08G73/06 ,  C08G33/02 ,  C08G33/10

    CPC classification number: C08G73/0616 ,  C07D233/96 ,  C08G18/34 ,  C08G18/3821 ,  C08G18/838

    Abstract: A process for the manufacture of modified N,N''-substituted 2,4,5-triketoimidazolidines which comprises reacting (a) at least one oxamidic ester having the group -NH-CO-CO-ORv wherein Rv is an aliphatic hydrocarbon group having up to 18 carbon atoms, a cycloaliphatic hydrocarbon group with up to 8 carbon atoms, a mononuclear aromatic hydrocarbon group having up to 14 carbon atoms, a mononuclear aromatic hydrocarbon group being substituted by one or more hydrocarbon groups having a total of up to 14 carbon atoms, (b) at least one isocyanate or isocyanate forming compound and (D) at least one compound selected from the group consisting of (d) an azomethine of formula (37) (cf. formula sheet), (e) a metal chelate of component (d), (f) an azo compound of formula (38), (g) a metal chelate component (f), (h) a combination of at least two of compounds (d) to (g) and, if desired, (c) a polycarboxylic acid, and a film, coating or shaped article prepared from said reaction product.

    Abstract translation: 制备改性的N，N'-取代的2,4,5-三酮咪唑烷的方法，其包括使（a）至少一种具有基团-NH-CO-CO-ORv的酰胺基酯，其中Rv是脂族烃基， 至多18个碳原子，具有至多8个碳原子的脂环族烃基，具有至多14个碳原子的单核芳族烃基，单核芳烃基团被一个或多个总共多达14个碳原子的烃基取代 原子，（b）至少一种异氰酸酯或异氰酸酯形成化合物和（D）至少一种选自（d）式（37）的偶氮甲碱（参见式）的化合物，（e）金属螯合物 组分（d），（f）式（38）的偶氮化合物，（g）金属螯合物组分（f），（h）化合物（d）至（g）中的至少两种的组合， 所需的（c）多羧酸，以及由所述反应产物制备的薄膜，涂层或成型制品。

    Polyurethane foams
    6.
    发明授权
    Polyurethane foams 失效

    公开(公告)号：US3793240A

    公开(公告)日：1974-02-19

    申请号：US3793240D

    申请日：1972-09-07

    Applicant: DUNLOP LTD

    Inventor： SMITH J

    IPC: C08G18/00 ,  C08G18/22 ,  C08G18/79 ,  C08G33/02 ,  C08G22/44 ,  C08G51/58

    CPC classification number: C08G18/79 ,  C08G18/225

    Abstract: FLAME-RESISTANT POLYURETHANE FOAMS ARE OBTAINED BY REACTING A POLYMERIC POLYOL WITH AN ORGANIC POLYISOCYAMATE IN A REACTION MIXTURE WHICH CONTAINS (A) AS A CATALYST AND ANIONIC SURFACTANT AND (B) AN ACIDOGENIC SUBSTANCE AS AN ANTI-GING ADDITIVE. SUITABLE CATALYSTS ARE THE SODIUM OR POTASSIUM SALT OF ALEIC ACID, AND ANTI-AGING ADDITIVE IS PREFERABLY A CHLORO- OR BROMO-DERIVATIVE OF A TRIALKYL ORTHOPHOSPHATE, OF WHICH THE FOLLOWING IS A SPECIFICATION.

    Polymers of thiadiazole
    9.
    发明授权
    Polymers of thiadiazole 失效
    噻唑的聚合物

    公开(公告)号：US3686196A

    公开(公告)日：1972-08-22

    申请号：US3686196D

    申请日：1968-02-01

    Applicant: M & T CHEMICALS INC

    Inventor： CONSIDINE WILLIAM J ,  SELTZER RAYMOND

    IPC: C07D285/08 ,  C07D513/22 ,  C08G75/02 ,  C08G75/32 ,  C08D13/10 ,  C08G33/02

    CPC classification number: C07D285/08 ,  C08G75/02 ,  C08G75/32

    Abstract: IN ACCORDANCE WITH CERTAIN OF ITS ASPECTS, THIS INVENTION RELATES TO NOVEL COMPOSITIONS AND TO A PROCESS FOR PREPARING A POLYMER COMPRISING RECURRING UNITS OF THE FORMULA:

    (5-(R-S-),3-((-)S-)-1,2,4-THIADIAZOLE)N

    IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF ALKYLENE, ACTIVATED ARYLENE, ARALKYLENE, ACTIVATED ALKARYLENE, AND DIVALENE HETEROCYCLIC GROUPS AND N IS AN INTEGER AT LEAST 2, WHICH COMPRISES REACTING (I) A DIFUNCTIONAL COMPOUND OF THE FORMULA:

    X-R-X

    IN WHICH X IS A HALOGEN RADICAL OR AN ESTER GROUP OF A LOWER CARBOXYLIC ACID WITH (II) A STABLE METAL PERTHIOCYANATE; AND RECOVERING SAID POLYMER.

    Process for preparation of aromatic polybenzimidazoles
    10.
    发明授权
    Process for preparation of aromatic polybenzimidazoles 失效
    制备芳族聚苯二甲酸酐的方法

    公开(公告)号：US3686149A

    公开(公告)日：1972-08-22

    申请号：US3686149D

    申请日：1970-10-08

    Applicant: KURARAY CO

    Inventor： OHFUJI YOSHIO

    IPC: C08G73/18 ,  C08G33/02

    CPC classification number: C08G73/18

    Abstract: A PROCESS FOR PREPARING AROMATIC POLYBENZIMIDAZOLES IS PROVIDED WHICH COMPRISES HEATING A MIXTURE OF AN AROMATIC TETRAMINE, AN AROMATIC DINITRILE AND AN AROMATIC TRIAMINO-MONOHALO COMPOUND OR AN AROMATIC DIAMINODIHALO COMPOUND AT A TEMPERATURE SUFFICIENT TO EFFECT A POLYCONDENSATION REACTION.

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