TW240311B - - Google Patents
Info
- Publication number
- TW240311B TW240311B TW081105449A TW81105449A TW240311B TW 240311 B TW240311 B TW 240311B TW 081105449 A TW081105449 A TW 081105449A TW 81105449 A TW81105449 A TW 81105449A TW 240311 B TW240311 B TW 240311B
- Authority
- TW
- Taiwan
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/22—Polybenzoxazoles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/32—Polythiazoles; Polythiadiazoles
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85704392A | 1992-03-24 | 1992-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW240311B true TW240311B (pl) | 1995-02-11 |
Family
ID=25325052
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW081105450A TW216460B (pl) | 1992-03-24 | 1992-07-09 | |
| TW081105449A TW240311B (pl) | 1992-03-24 | 1992-07-09 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW081105450A TW216460B (pl) | 1992-03-24 | 1992-07-09 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0632921A1 (pl) |
| JP (1) | JPH07504291A (pl) |
| KR (2) | KR950701115A (pl) |
| CA (2) | CA2132710A1 (pl) |
| TW (2) | TW216460B (pl) |
| WO (2) | WO1993019461A1 (pl) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3669457B2 (ja) * | 1996-03-19 | 2005-07-06 | 富士通株式会社 | 磁気記録媒体及びその製造方法 |
| EP0927992A4 (en) * | 1997-07-17 | 1999-09-15 | Sony Corp | MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING / REPRODUCING DEVICE COMPRISING SAME |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3449296A (en) * | 1967-05-29 | 1969-06-10 | Du Pont | Polybenzoxazole film |
| JPS58122622A (ja) * | 1982-01-18 | 1983-07-21 | Hitachi Ltd | 磁気記録媒体に有機保護膜を形成する方法 |
| US5124432A (en) * | 1989-08-31 | 1992-06-23 | The Dow Chemical Company | Branched polybenzazole polymer and method of preparation |
-
1992
- 1992-07-09 TW TW081105450A patent/TW216460B/zh active
- 1992-07-09 TW TW081105449A patent/TW240311B/zh active
-
1993
- 1993-03-11 JP JP5516615A patent/JPH07504291A/ja active Pending
- 1993-03-11 EP EP93907411A patent/EP0632921A1/en not_active Withdrawn
- 1993-03-11 WO PCT/US1993/002206 patent/WO1993019461A1/en not_active Application Discontinuation
- 1993-03-11 WO PCT/US1993/002207 patent/WO1993019462A1/en active Application Filing
- 1993-03-11 CA CA002132710A patent/CA2132710A1/en not_active Abandoned
- 1993-03-11 CA CA002132545A patent/CA2132545A1/en not_active Abandoned
-
1994
- 1994-09-24 KR KR1019940703309A patent/KR950701115A/ko not_active Application Discontinuation
- 1994-09-24 KR KR1019940703310A patent/KR950701116A/ko not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2132710A1 (en) | 1993-09-30 |
| WO1993019462A1 (en) | 1993-09-30 |
| CA2132545A1 (en) | 1993-09-30 |
| JPH07504291A (ja) | 1995-05-11 |
| WO1993019461A1 (en) | 1993-09-30 |
| KR950701116A (ko) | 1995-02-20 |
| TW216460B (pl) | 1993-11-21 |
| KR950701115A (ko) | 1995-02-20 |
| EP0632921A1 (en) | 1995-01-11 |