公开(公告)号：US3574166A

公开(公告)日：1971-04-06

申请号：US3574166D

申请日：1969-06-16

Applicant: BAYER AG

Inventor： RADLMANN EDUARD ,  LORENZ GUNTER ,  GALLUS MANFRED ,  SCHRAMM JURGEN ,  NISCHK GUNTHER

IPC: C07D265/22 ,  C08G73/06 ,  C08G33/02

CPC classification number: C07D265/22 ,  C08G73/0694 ,  Y10S2/91

Abstract: HIGH MOLECULAR WEIGHT POLYQUINAZOLONES AND A PROCESS FOR THEIR PRODUCTION BY POLYCONDENSATION OF A MIXTURE OF POLYMERHOMOLOGOUS PRIMARY AROMATIC DIAMINES CONTAINING ETHER GROUPS WITH DIBENZOXAZINONES AT TEMPERATURES OF FROM 80 TO 250*C.

公开(公告)号：US3669928A

公开(公告)日：1972-06-13

申请号：US3669928D

申请日：1970-06-26

Applicant: BAYER AG

Inventor： LORENZ GUNTER ,  GALLUS MANFRED ,  GIESSLER WOLFGANG ,  NISCHK GUNTHER

IPC: C08G73/00 ,  C08G73/06 ,  C08G20/20 ,  C08G30/02

CPC classification number: C08G73/06

Abstract: Improvement in the production of high molecular weight polybenzoxazinones from bis-anthranilic acid derivatives and dicarboxylic acid dihalides followed by ring closure of the polyamidocarboxylic acid obtained, wherein ring closure is effected by a liquid or dissolved dehydrating agent in an organic solvent.

Abstract translation: 改进了由双 - 邻氨基苯甲酸衍生物和二羧酸二卤化物生产高分子量聚苯并恶嗪酮，然后闭环获得的聚酰胺羧酸，其中通过液体或溶解的脱水剂在有机溶剂中进行闭环。

公开(公告)号：US3637594A

公开(公告)日：1972-01-25

申请号：US3637594D

申请日：1969-05-29

Applicant: BAYER AG

Inventor： GALLUS MANFRED ,  LORENZ GUNTER ,  NISCHK GUNTHER

IPC: C08G73/06 ,  C09B43/28 ,  C08G20/08 ,  C08G33/02

CPC classification number: C09B43/28 ,  C08G73/06

Abstract: HIGH MOLECULAR WEIGHT AROMATIC POLYBENZOXAZIONES AND A PROCESS FOR THEIR PRODUCTION BY POLYCONDENSATION OF AROMATIC DIAMINOCARBOXYLIC ACIDS CONTAINING ETHER OXYGEN WITH AROMATIC DICARBOXYLIC ACID DIHALIDES IN POLAR ORGANIC SOLVENTS, AND HEATING THE POLYAMIDE CARBOXYLIC ACIDS THUS OBTAINES AT TEMPERATURES ABOVE 150* C. SAID POLYMERS BEING USEFUL IN THE FORM OF FILMS AND FOILS.