RESIN COATED SAND AND ITS PRODUCTION

Title:

RESIN COATED SAND AND ITS PRODUCTION

Document Type and Number:

Japanese Patent JPS5881539

Kind Code:

A

Abstract:

PURPOSE: To accelerate the collapsing property of shell molds markedly in coated sand wherein sand grains for casting are coated with a phenolic resin by allowing an org. chlorine compd. of a specific loss of weight on heating to exist.

CONSTITUTION: In coated sand wherein sand grains for molding are coated with a phenolic resin contg. a lubricant, ≥1 kind org. chlorine compds. having 130W 550°C temp. at which the loss of weight on heating exhibits 20%. The org. chlorine compds. are cyclic org. compds. and are dodeca chlorododeca hydrodimethanodibenzocyclooctene.

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Inventors:

MATSUSHIMA NORITERU
SAEKI YUKIO
KURABAYASHI HAJIME

Application Number:

JP18052681A

Publication Date:

May 16, 1983

Filing Date:

November 10, 1981

Export Citation:

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Assignee:

SUMITOMO DUREZ CO

International Classes:

B22C1/02; B22C1/22; C08K5/03; C08L61/06; C08L57/08; (IPC1-7): B22C1/02

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