JPS574349A - Resin coated sand for shell mold - Google Patents

Resin coated sand for shell mold

Info

Publication number
JPS574349A
JPS574349A JP7771980A JP7771980A JPS574349A JP S574349 A JPS574349 A JP S574349A JP 7771980 A JP7771980 A JP 7771980A JP 7771980 A JP7771980 A JP 7771980A JP S574349 A JPS574349 A JP S574349A
Authority
JP
Japan
Prior art keywords
resin
coated sand
sand
coated
resin coated
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
Application number
JP7771980A
Other languages
Japanese (ja)
Inventor
Teruaki Okada
Seiji Nakazawa
Shinichi Sekine
Masakatsu Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gun Ei Chemical Industry Co Ltd
Original Assignee
Gun Ei Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gun Ei Chemical Industry Co Ltd filed Critical Gun Ei Chemical Industry Co Ltd
Priority to JP7771980A priority Critical patent/JPS574349A/en
Publication of JPS574349A publication Critical patent/JPS574349A/en
Pending legal-status Critical Current

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  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE: To provide resin coated sand of improved collapsing characteristics after charging for shell molds by coating a novolak type modified phonolic resin of specified infrared ray absorption spectra contg. cyclopentadiene type oil on molding sand.
CONSTITUTION: Cyclopentadiene type oil and the like of 100W50,000 centipoises viscosities at 25°C are alllowed to coexist in phenols and aldehydes and are caused to react, whereby a novolak type modified phenolic resin is obtained. This resin has 1.5W7.0 values in 750cm-1/820cm-1 in infrared ray absorption spectra. If molding sand is coated by using this resin, the resin coated sand having good mold strength and molding characteristics and superior collapsing properties of cores or the like for shell molds is obtained. This coated sand is suited for aluminum alloy castings and the like.
COPYRIGHT: (C)1982,JPO&Japio
JP7771980A 1980-06-11 1980-06-11 Resin coated sand for shell mold Pending JPS574349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7771980A JPS574349A (en) 1980-06-11 1980-06-11 Resin coated sand for shell mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7771980A JPS574349A (en) 1980-06-11 1980-06-11 Resin coated sand for shell mold

Publications (1)

Publication Number Publication Date
JPS574349A true JPS574349A (en) 1982-01-09

Family

ID=13641689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7771980A Pending JPS574349A (en) 1980-06-11 1980-06-11 Resin coated sand for shell mold

Country Status (1)

Country Link
JP (1) JPS574349A (en)

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