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1.Phosphoric acid diaryl esters as catalysts in transesterification of diarylcarbonates with dihydric phenols 失效
Title translation: 磷酸二芳基酯作为二芳基碳酸酯与二元酚酯交换反应中的催化剂公开(公告)号:US3321439A
公开(公告)日:1967-05-23
申请号:US38548664
申请日:1964-07-27
Applicant: BAYER AG
Inventor: VOLKER BOLLERT , ULRICH CURTIUS , GERHARD FRITZ , HERMANN SCHNELL
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2.Process for the preparation of carbonic and carboxylic acid derivatives 失效
Title translation: 制备碳酸和羧酸衍生物的方法公开(公告)号:US3326958A
公开(公告)日:1967-06-20
申请号:US53462566
申请日:1966-03-16
Applicant: BAYER AG
Inventor: ULRICH CURTIUS , VOLKER BOLLERT , GERHARD FRITZ , JOACBIM NENTWIG
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3.Method of foaming organo-plastic synthetic resins and products produced therefrom 失效
Title translation: 发泡有机塑料合成树脂及其制备的产品的方法公开(公告)号:US3222302A
公开(公告)日:1965-12-07
申请号:US18827162
申请日:1962-04-17
Applicant: BAYER AG
Inventor: VOLKER BOLLERT , FRITZ GERHARD T , HERMANN SCHNELL , GEORG LOTTER HANS
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