JPS55135121A - Apparatus for producing liquid phenolic resin composition for organic self-curing mold - Google Patents
Apparatus for producing liquid phenolic resin composition for organic self-curing moldInfo
- Publication number
- JPS55135121A JPS55135121A JP4282879A JP4282879A JPS55135121A JP S55135121 A JPS55135121 A JP S55135121A JP 4282879 A JP4282879 A JP 4282879A JP 4282879 A JP4282879 A JP 4282879A JP S55135121 A JPS55135121 A JP S55135121A
- Authority
- JP
- Japan
- Prior art keywords
- water
- heating
- supply port
- added
- phenolic resin
- 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.)
- Granted
Links
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
PURPOSE: To disperse with the addition of org. solvent required in shaping work and to improve working atmosphere, by a method wherein, in the polycondensation of phenolic resin, water is added just before a dehydration stage in order to prevent the formation and the deposition of an over-polymerized product on the internal surface of a pipe wall.
CONSTITUTION: Starting materials are introduced from raw material phenol-supply port A, raw material formalin-supply port B and a supply port C for a catalyst and water into a condensation vessel 1. The starting materials are subjected to polycondention while stirred by a stirrer 9. Superheated steam is supplied to a superheating jacket 1a. Steam which is vaporized by heating is cooled by means of a condenser 10 to return water to the vessel. The temperature within the condensation vessel 1 is elevated and then cooled. A para-sulfonic acid as a neutralizing agent is added. Further, water is added from a water tank 2 to a feedtank 3. Then heating and dehydration steps are carried out in a tubular heater 4 and an evaporator 5 by continuous operation. In this way, heating and dehydrating are carried out under reduced pressure, and the product can be obtained continously as distillate.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4282879A JPS581129B2 (en) | 1979-04-09 | 1979-04-09 | Manufacturing device for liquid phenolic resin composition for organic self-hardening molds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4282879A JPS581129B2 (en) | 1979-04-09 | 1979-04-09 | Manufacturing device for liquid phenolic resin composition for organic self-hardening molds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55135121A true JPS55135121A (en) | 1980-10-21 |
| JPS581129B2 JPS581129B2 (en) | 1983-01-10 |
Family
ID=12646815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4282879A Expired JPS581129B2 (en) | 1979-04-09 | 1979-04-09 | Manufacturing device for liquid phenolic resin composition for organic self-hardening molds |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS581129B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0209020A2 (en) * | 1985-07-13 | 1987-01-21 | BASF Aktiengesellschaft | Process for the preparation of Phenol resins |
-
1979
- 1979-04-09 JP JP4282879A patent/JPS581129B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0209020A2 (en) * | 1985-07-13 | 1987-01-21 | BASF Aktiengesellschaft | Process for the preparation of Phenol resins |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS581129B2 (en) | 1983-01-10 |
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