GB1424743A - Self-bonding insulated wires - Google Patents
Self-bonding insulated wiresInfo
- Publication number
- GB1424743A GB1424743A GB3115773A GB3115773A GB1424743A GB 1424743 A GB1424743 A GB 1424743A GB 3115773 A GB3115773 A GB 3115773A GB 3115773 A GB3115773 A GB 3115773A GB 1424743 A GB1424743 A GB 1424743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyether
- lacquer
- hitachi
- copolyamide
- polyimide
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
- Paints Or Removers (AREA)
Abstract
1424743 Coated copper conductors HITACHI Ltd HITACHI CHEMICAL CO Ltd and HITACHI CABLE Ltd 29 June 1973 31157/73 Heading B2E [Also in Divisions C3 and H1] Copper conductors for use in making cords are first coated with a polyimide lacquer and then with a lacquer prepared by dissolving in a solvent a polyether having a molecular weight of at least 5000 and having repeating units: R is H or C 1-4 alkyl group; R<SP>1</SP> is a divalent aliphatic or aromatic radical, a blocked polyisocyanate so as to provide 0.2-0.8 equivalent of isocyanate group per OH equivalent of the polyether, and from 5-35 parts by wt. of a copolyamide per 100 parts by wt. of polyether plus polyisocyanate. The polyether may be a resin commercially available as a "phenoxy resin", i.e. of the formula I in which R is H. It may also comprise a mixture of such a phenoxy resin and a polyether of formula II in which R is CH 3 and R' is a phenylene radical. A suitable blocked polyisocyanate is bis (m-tolyloxycarbamyl)-4, 4'-diphenylmethane. The copolyamide may comprise a mixture of units derived from hexamethylene adipamide and caprolactam. The conductor may be baked after coating with the polyimide and prior to coating with the lacquer of the invention. The lacquer is sufficiently flexible to form into coils having small diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3115773A GB1424743A (en) | 1973-06-29 | 1973-06-29 | Self-bonding insulated wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3115773A GB1424743A (en) | 1973-06-29 | 1973-06-29 | Self-bonding insulated wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1424743A true GB1424743A (en) | 1976-02-11 |
Family
ID=10318889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3115773A Expired GB1424743A (en) | 1973-06-29 | 1973-06-29 | Self-bonding insulated wires |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1424743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4751107A (en) * | 1985-05-17 | 1988-06-14 | Basf Aktiengesellschaft | Heat-curable hot-melt enamel and its preparation |
-
1973
- 1973-06-29 GB GB3115773A patent/GB1424743A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4751107A (en) * | 1985-05-17 | 1988-06-14 | Basf Aktiengesellschaft | Heat-curable hot-melt enamel and its preparation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19930628 |