JPS5791840A - Self-hardening bonding material composite for casting - Google Patents
Self-hardening bonding material composite for castingInfo
- Publication number
- JPS5791840A JPS5791840A JP16829280A JP16829280A JPS5791840A JP S5791840 A JPS5791840 A JP S5791840A JP 16829280 A JP16829280 A JP 16829280A JP 16829280 A JP16829280 A JP 16829280A JP S5791840 A JPS5791840 A JP S5791840A
- Authority
- JP
- Japan
- Prior art keywords
- content percentage
- self
- hardening
- composition
- bonding material
- 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
- Mold Materials And Core Materials (AREA)
Abstract
PURPOSE: To obtain a bonding material composition which is low in odor and high in strength, by controlling the content percentage of a compound of a high polymer weight area of ≥3 nuclides, within a specific range, and narrowing the molecular weight distribution.
CONSTITUTION: Phenol and formaldehyde and made to react in the mol ratio of 1:1W1.65 by using an alkali metal and/or an alkaline earth metal as a reaction catalyst, and when the content percentage of a high polymer compound of ≥3 nuclides has reached 4W6wt%, or when the content percentage of a 1-nuclide composition has reached 65W80wt%, the reaction is halted. Subsequently, said composition is neutralized by an organic acid or an inorganic acid, and after that, when the neutralized salt is filtered, it is possible to obtain a self-hardening bonding agent for a thermosetting phenolie resin compound casting which has 60W75wt% nonvolatile portion and ≤150CPS viscosity, and is suitable for use by hardening it at a normal temperature.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16829280A JPS5846375B2 (en) | 1980-11-29 | 1980-11-29 | Self-hardening binder composition for castings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16829280A JPS5846375B2 (en) | 1980-11-29 | 1980-11-29 | Self-hardening binder composition for castings |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5791840A true JPS5791840A (en) | 1982-06-08 |
JPS5846375B2 JPS5846375B2 (en) | 1983-10-15 |
Family
ID=15865300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16829280A Expired JPS5846375B2 (en) | 1980-11-29 | 1980-11-29 | Self-hardening binder composition for castings |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846375B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60261639A (en) * | 1984-06-07 | 1985-12-24 | Dainippon Ink & Chem Inc | Self-curing binder composition for casting mold |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62145682U (en) * | 1986-03-05 | 1987-09-14 |
-
1980
- 1980-11-29 JP JP16829280A patent/JPS5846375B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60261639A (en) * | 1984-06-07 | 1985-12-24 | Dainippon Ink & Chem Inc | Self-curing binder composition for casting mold |
JPH0148103B2 (en) * | 1984-06-07 | 1989-10-18 | Dainippon Ink & Chemicals |
Also Published As
Publication number | Publication date |
---|---|
JPS5846375B2 (en) | 1983-10-15 |
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