GB1375295A - - Google Patents
Info
- Publication number
- GB1375295A GB1375295A GB1382672A GB1382672A GB1375295A GB 1375295 A GB1375295 A GB 1375295A GB 1382672 A GB1382672 A GB 1382672A GB 1382672 A GB1382672 A GB 1382672A GB 1375295 A GB1375295 A GB 1375295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- march
- coatings
- weight
- recording media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
- G11B5/7021—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing a polyurethane or a polyisocyanate
- G11B5/7022—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing a polyurethane or a polyisocyanate containing mixtures of polyurethanes or polyisocyanates with other polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712114611 DE2114611A1 (de) | 1971-03-26 | 1971-03-26 | Magnetische Aufzeichnungsträger |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1375295A true GB1375295A (xx) | 1974-11-27 |
Family
ID=5802789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1382672A Expired GB1375295A (xx) | 1971-03-26 | 1972-03-24 |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE781192A (xx) |
CA (1) | CA969433A (xx) |
DE (1) | DE2114611A1 (xx) |
FR (1) | FR2130654B1 (xx) |
GB (1) | GB1375295A (xx) |
IT (1) | IT952402B (xx) |
NL (1) | NL7203689A (xx) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4430362A (en) | 1981-12-28 | 1984-02-07 | Basf Aktiengesellschaft | Production of magnetic recording media |
US5130202A (en) * | 1989-08-22 | 1992-07-14 | Basf Aktiengesellschaft | Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends |
US6720025B2 (en) | 2002-07-01 | 2004-04-13 | 3M Innovative Properties Company | Slot extrusion coating methods |
-
1971
- 1971-03-26 DE DE19712114611 patent/DE2114611A1/de active Pending
-
1972
- 1972-03-20 NL NL7203689A patent/NL7203689A/xx not_active Application Discontinuation
- 1972-03-23 CA CA137,987A patent/CA969433A/en not_active Expired
- 1972-03-24 GB GB1382672A patent/GB1375295A/en not_active Expired
- 1972-03-24 BE BE781192A patent/BE781192A/xx unknown
- 1972-03-24 FR FR7210376A patent/FR2130654B1/fr not_active Expired
- 1972-03-25 IT IT49248/72A patent/IT952402B/it active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4430362A (en) | 1981-12-28 | 1984-02-07 | Basf Aktiengesellschaft | Production of magnetic recording media |
US5130202A (en) * | 1989-08-22 | 1992-07-14 | Basf Aktiengesellschaft | Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends |
US6720025B2 (en) | 2002-07-01 | 2004-04-13 | 3M Innovative Properties Company | Slot extrusion coating methods |
Also Published As
Publication number | Publication date |
---|---|
FR2130654B1 (xx) | 1975-04-25 |
DE2114611A1 (de) | 1972-10-05 |
CA969433A (en) | 1975-06-17 |
FR2130654A1 (xx) | 1972-11-03 |
BE781192A (fr) | 1972-09-25 |
IT952402B (it) | 1973-07-20 |
NL7203689A (xx) | 1972-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |