JPS55152762A - Magnetic coating material composition - Google Patents
Magnetic coating material compositionInfo
- Publication number
- JPS55152762A JPS55152762A JP5983579A JP5983579A JPS55152762A JP S55152762 A JPS55152762 A JP S55152762A JP 5983579 A JP5983579 A JP 5983579A JP 5983579 A JP5983579 A JP 5983579A JP S55152762 A JPS55152762 A JP S55152762A
- Authority
- JP
- Japan
- Prior art keywords
- bond
- coating material
- resin
- polymer
- magnetic
- 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.)
- Pending
Links
Abstract
PURPOSE: To provide title coating material compsn. which is useful as a binder for the magnetic recording layer of a magnetic tape, excels in the dispersiblity of magnetic powder and contains a resin produced by a method wherein 1,3-pentadiene is homopolymerized or copolymerized with another monomer, and the resulting polymer is epoxidized and then hydroxylated.
CONSTITUTION: 1,3-Pentadiene is homopolymerized or copolymerized with another monomer such as butadiene, isoprene, styrene, vinyltoluene, or acrylonitrile to obtain a polymer having an iodine value of 200W500, an average MW of 500W 10,000 in which 1,4-bond is 30W40%, 1,2-bond or 3,4-bond is 60W70% and cis- bond/trans-bond is 12/88W20/80. The polymer is epoxidized and then hydroxylated to obtain a resin having an epoxy eq. of 240W1,200, a hydroxyl eq. of 350W2,240 and a softening point of 30W150°C. The desired magnetic coating material compsn. can be obtd. by incorporating 5W50wt% (based the weight of whole resin component) of the produced resin into the compsn.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5983579A JPS55152762A (en) | 1979-05-16 | 1979-05-16 | Magnetic coating material composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5983579A JPS55152762A (en) | 1979-05-16 | 1979-05-16 | Magnetic coating material composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55152762A true JPS55152762A (en) | 1980-11-28 |
Family
ID=13124672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5983579A Pending JPS55152762A (en) | 1979-05-16 | 1979-05-16 | Magnetic coating material composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55152762A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5242989A (en) * | 1992-04-03 | 1993-09-07 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
US5262496A (en) * | 1992-04-03 | 1993-11-16 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
US5264480A (en) * | 1992-04-03 | 1993-11-23 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
-
1979
- 1979-05-16 JP JP5983579A patent/JPS55152762A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5242989A (en) * | 1992-04-03 | 1993-09-07 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
US5262496A (en) * | 1992-04-03 | 1993-11-16 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
US5264480A (en) * | 1992-04-03 | 1993-11-23 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
US5284901A (en) * | 1992-04-03 | 1994-02-08 | Shell Oil Company | Hydroxyl functional derivatives of epoxidized diene polymers and process for making them |
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