Invention Grant
- Patent Title: Stepwise linear magnetic polymers and methods for preparation thereof
- Patent Title (中): 逐步线性磁性聚合物及其制备方法
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Application No.: US144163Application Date: 1993-10-26
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Publication No.: US5352764APublication Date: 1994-10-04
- Inventor: Jack D. Mackey
- Applicant: Jack D. Mackey
- Applicant Address: CA Los Angeles
- Assignee: Northrop Corporation
- Current Assignee: Northrop Corporation
- Current Assignee Address: CA Los Angeles
- Main IPC: C08G63/44
- IPC: C08G63/44 ; C08G73/00 ; C08G73/06
Abstract:
A stepwise linear polymer composition having intense magnetic properties and a method for preparation of same. A phthalimide compound and an aromatic dialiphatic acid are reacted in the presence of an acetate of monovalent metal at elevated temperatures to form a phenylenebis diphthalimidine compound. The phenylenebis diphthalimidine compound is then reacted with 3-benzylidine phthalimidine and a metal salt of an aliphatic acid at elevated temperatures under an inert gas to form the intensely magnetic polymer. The reactions may be carried out in the presence of a solvent.
Public/Granted literature
- US6166600A Automatic gain and phase controlled feedforward amplifier without pilot signal Public/Granted day:2000-12-26
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