IT1185554B - Atactic polypropylene prepn. - Google Patents
Atactic polypropylene prepn.Info
- Publication number
- IT1185554B IT1185554B IT20385/85A IT2038585A IT1185554B IT 1185554 B IT1185554 B IT 1185554B IT 20385/85 A IT20385/85 A IT 20385/85A IT 2038585 A IT2038585 A IT 2038585A IT 1185554 B IT1185554 B IT 1185554B
- Authority
- IT
- Italy
- Prior art keywords
- sectional area
- cross
- single wires
- wires
- circular
- Prior art date
Links
- 239000004743 Polypropylene Substances 0.000 title 1
- -1 polypropylene Polymers 0.000 title 1
- 229920001155 polypropylene Polymers 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 3
- 235000019892 Stellar Nutrition 0.000 abstract 1
Landscapes
- Resistance Heating (AREA)
Abstract
The radiant heater has a heating element composed of heating wire, which is laid on an insulating support dish and which forms a current-carrying cross-sectional area and a heat-radiating surface. The current-carrying cross-sectional area is divided between at least two single wires which are twisted together. The single wires have the same or different circular diameter. The single wires have a cross-sectional area which deviates from the circular form. The cross-sectional area is stellar or oval in shape. One or more single wires have a circular diamter and one or more single wires have a cross-sectional area which deviates from the circular form. The heating element is laid uncoiled and spirally on the insulating support. The wires are pre-oxidised.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20385/85A IT1185554B (en) | 1985-04-17 | 1985-04-17 | Atactic polypropylene prepn. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20385/85A IT1185554B (en) | 1985-04-17 | 1985-04-17 | Atactic polypropylene prepn. |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8520385A0 IT8520385A0 (en) | 1985-04-17 |
IT1185554B true IT1185554B (en) | 1987-11-12 |
Family
ID=11166242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT20385/85A IT1185554B (en) | 1985-04-17 | 1985-04-17 | Atactic polypropylene prepn. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1185554B (en) |
-
1985
- 1985-04-17 IT IT20385/85A patent/IT1185554B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8520385A0 (en) | 1985-04-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19960429 |