Abstract: A method for manufacturing casting molds or mold cores comprising shaping an aqueous mixture of sand, binder, a hydrocarbon resinous material and a porous, heat-resistant inorganic material.
Type:
Grant
Filed:
April 11, 1977
Date of Patent:
November 13, 1979
Assignees:
AB Nynas-Petroleum, AB Westin and Backlund