Invention Grant
- Patent Title: Polybenzoxazole and polybenzothiazole precursors
- Patent Title (中): 聚苯并恶唑和聚苯并噻唑前体
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Application No.: US161148Application Date: 1998-09-25
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Publication No.: US6153350APublication Date: 2000-11-28
- Inventor: Recai Sezi , Michael Keitmann , Gunther Schmid
- Applicant: Recai Sezi , Michael Keitmann , Gunther Schmid
- Applicant Address: DEX Munich
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DEX Munich
- Priority: DEX19742132 19970924
- Main IPC: G03F7/032
- IPC: G03F7/032 ; C08G69/32 ; C08G69/42 ; C08G73/22 ; C08G75/32 ; G03F7/023 ; G03C1/52 ; C08G69/00
Abstract:
The polybenzoxazole and polybenzothiazole precursors of the invention have the following partial structure: ##STR1## where: A.sup.1 to A.sup.6 are--independently of one another--H, F, CH.sub.3, CF.sub.3, OCH.sub.3, OCF.sub.3, CH.sub.2 CH.sub.3, CF.sub.2 CF.sub.3, OCH.sub.2 CH.sub.3 or OCF.sub.3 CF.sub.3 ;T is O or S, and m is 1;Z is a carbocyclic or heterocyclic aromatic radical.
Public/Granted literature
- USD315065S Door mirror Public/Granted day:1991-03-05
Information query
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