GB1432181A - Method for manufacturing electric wires insulated with a foamed polyolefin-series resin - Google Patents
Method for manufacturing electric wires insulated with a foamed polyolefin-series resinInfo
- Publication number
- GB1432181A GB1432181A GB3632673A GB3632673A GB1432181A GB 1432181 A GB1432181 A GB 1432181A GB 3632673 A GB3632673 A GB 3632673A GB 3632673 A GB3632673 A GB 3632673A GB 1432181 A GB1432181 A GB 1432181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- carbon atoms
- less
- extruding
- foaming agent
- 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
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
1432181 Coated wires FURUKAWA ELECTRIC CO LTD 31 July 1973 [3 Aug 1972 (3) 5 June 1973] 36326/73 Heading B2E [Also in Divisions B5, C3 and H1] Electric wires insulated with a uniformly foamed, dimensionally stable, olefine resin are made by continuous extrusion of a composition prepared by mixing an olefine resin with a foaming agent comprising azodicarbonamide and with at least 10 per cent by weight of at least one liquid or solid material having a solubility parameter (as defined) of 12.0 or more based on the amount of the azocarbonamide and extruding it on an electric wire under conditions in which the azodicarbonamide decomposes, the material having a solubility parameter of 12.0 or more being selected from polyhydric alcohols having less than eight carbon atoms, ethanol amines having less than six carbon atoms, monohydric alcohols having less than three carbon atoms, dimethyl sulfoxide, cellulose derivatives, lignin and its derivatives, lactone compounds, alkyl acetamides, alkylformamides, phenolic compounds, ethylene carbonate, thiourea, succinimide, and compounds containing a 1, 3, 5-triazine ring expressed by the general formula: In the examples annealed copper wires were coated with foams of polyethylene, polypropylene, or an ethylene-vinyl acetate copolymer which were obtained by extruding a mixture of the polymer, foaming agent and the above material onto the wires.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47077811A JPS52510B2 (en) | 1972-08-03 | 1972-08-03 | |
| JP47077812A JPS5143062B2 (en) | 1972-08-03 | 1972-08-03 | |
| JP47077810A JPS5143061B2 (en) | 1972-08-03 | 1972-08-03 | |
| JP48062516A JPS5228135B2 (en) | 1973-06-05 | 1973-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1432181A true GB1432181A (en) | 1976-04-14 |
Family
ID=27464176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3632673A Expired GB1432181A (en) | 1972-08-03 | 1973-07-31 | Method for manufacturing electric wires insulated with a foamed polyolefin-series resin |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2339470C3 (en) |
| GB (1) | GB1432181A (en) |
-
1973
- 1973-07-31 GB GB3632673A patent/GB1432181A/en not_active Expired
- 1973-08-03 DE DE19732339470 patent/DE2339470C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2339470B2 (en) | 1975-03-06 |
| DE2339470A1 (en) | 1974-02-14 |
| DE2339470C3 (en) | 1975-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |