IT1200695B - Hydroxymethyl-glutaric acid prepn. - Google Patents
Hydroxymethyl-glutaric acid prepn.Info
- Publication number
- IT1200695B IT1200695B IT21758/85A IT2175885A IT1200695B IT 1200695 B IT1200695 B IT 1200695B IT 21758/85 A IT21758/85 A IT 21758/85A IT 2175885 A IT2175885 A IT 2175885A IT 1200695 B IT1200695 B IT 1200695B
- Authority
- IT
- Italy
- Prior art keywords
- coils
- barrel
- housings
- clamped
- extruder barrel
- Prior art date
Links
- XPQIPNORJZZYPV-UHFFFAOYSA-N 2-hydroxymethylglutaric acid Chemical compound OCC(C(O)=O)CCC(O)=O XPQIPNORJZZYPV-UHFFFAOYSA-N 0.000 title 1
- 230000006698 induction Effects 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000011229 interlayer Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
An induction heating appts. for plastics extruders employs induction coils with E-shaped cores. The coils are mounted in a 2-piece housing which is clamped on the extruder barrel by spring tension. The extruder barrel (1) is heated by induction coils (2,2a,3,3a) in which the coil is wound on the central arm (4,4a,5,5a) of an E-shaped laminated iron core. The coils are magnetically coupled to the barrel by an interlayer (6,6a,7,7a) which covers the core. Pairs of coils are mounted in a 2-piece housing (8,9) which is assembled and clamped on the barrel (1) periphery by means of threaded pins (13), carrying washers (15) and nuts (16,17). Disc spring stacks (14) are interposed between the washers (15) and housings (8,9), so that the housings and coils are urged into contact with the barrel by spring pressure. In another embodiment, the appts. may be adapted to a cylindrical extruder barrel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT21758/85A IT1200695B (en) | 1985-07-30 | 1985-07-30 | Hydroxymethyl-glutaric acid prepn. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT21758/85A IT1200695B (en) | 1985-07-30 | 1985-07-30 | Hydroxymethyl-glutaric acid prepn. |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8521758A0 IT8521758A0 (en) | 1985-07-30 |
IT1200695B true IT1200695B (en) | 1989-01-27 |
Family
ID=11186447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT21758/85A IT1200695B (en) | 1985-07-30 | 1985-07-30 | Hydroxymethyl-glutaric acid prepn. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1200695B (en) |
-
1985
- 1985-07-30 IT IT21758/85A patent/IT1200695B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8521758A0 (en) | 1985-07-30 |
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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: 19950728 |