JPS55112226A - Production of shell-moldable lignin-phenol resin composition - Google Patents
Production of shell-moldable lignin-phenol resin compositionInfo
- Publication number
- JPS55112226A JPS55112226A JP1938979A JP1938979A JPS55112226A JP S55112226 A JPS55112226 A JP S55112226A JP 1938979 A JP1938979 A JP 1938979A JP 1938979 A JP1938979 A JP 1938979A JP S55112226 A JPS55112226 A JP S55112226A
- Authority
- JP
- Japan
- Prior art keywords
- lignin
- phenol
- moldable
- shell
- resin composition
- 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.)
- Pending
Links
Landscapes
- Mold Materials And Core Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
PURPOSE: To produce inexpensively a shell-moldable phenol resin composition exhibiting excellent hot properties at high temperatures, by dissolving, with stirring, a high-purity lignin in a phenol-formaldehyde resin.
CONSTITUTION: (A) 40W60wt% of a solid resin prepared at a mixing mol ratio of a phenol-formaldehyde resin, of 0.55W0.70 under mild conditions, and (B) 60W 40% of a high-purity lignin discharged from a Kraft process and not containing sulfur compounds and other impurities are mixed and dissolved, forming a shell- moldable lignin-phenol resin composition having a reduced amount of phenol. The component (B) is a lignin which is obtained by destruction of a lignin with a pure alkali, or a lignin which is obtained by destruction by fermenting fungi and which does not emit an odor. And further, as the lignin (B), a lignin which has a molecular weight as low as possible is preferred. An example of such a lignin is an acid lignin prepared by digesting wood, straws or the like with NaOH alone and then neutralizing the alkali lignin produced to a pH of 3W4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1938979A JPS55112226A (en) | 1979-02-20 | 1979-02-20 | Production of shell-moldable lignin-phenol resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1938979A JPS55112226A (en) | 1979-02-20 | 1979-02-20 | Production of shell-moldable lignin-phenol resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55112226A true JPS55112226A (en) | 1980-08-29 |
Family
ID=11997921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1938979A Pending JPS55112226A (en) | 1979-02-20 | 1979-02-20 | Production of shell-moldable lignin-phenol resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55112226A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998050467A1 (en) * | 1997-05-05 | 1998-11-12 | Tsuyoshi Kono | Resin composition and board made by using the same |
| WO2024116927A1 (en) * | 2022-11-29 | 2024-06-06 | 旭有機材株式会社 | Organic binder for molds, and molding sand composition and mold produced using same |
-
1979
- 1979-02-20 JP JP1938979A patent/JPS55112226A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998050467A1 (en) * | 1997-05-05 | 1998-11-12 | Tsuyoshi Kono | Resin composition and board made by using the same |
| JP3361819B2 (en) * | 1997-05-05 | 2003-01-07 | 剛 河野 | Adhesive and board using it |
| WO2024116927A1 (en) * | 2022-11-29 | 2024-06-06 | 旭有機材株式会社 | Organic binder for molds, and molding sand composition and mold produced using same |
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