Furan Resin coated aggregate

Details Furan Resin coated aggregate Furan Resin coated aggregate

1982-02-16

1984-10-23

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164526, 523143, 523144, B22C 122

Patent

active

044782691

ABSTRACT:
A method and composition for forming a dry free-flowing particulate solid is disclosed which utilizes a novel binder system for bonding particles of carbon, sand and/or other solid aggregate materials. The solid, non-sticky binder system comprises furfural, a phenolic novolak resin, and a liquid amine having free hydrogens on the amine nitrogen which is capable of reacting with furfural. This system is capable of adhering to such particles while retaining the free-flowing characteristics of the particles. The method involves mixing the aggregate with the furfural-phenolic novolak resin until tacky, and adding methylene chloride to the tacky mix while continuing to mix. The mix is cooled by the rapid evaporation of the methylene chloride and quickly forms the free-flowing characteristics of a powder or granulated material.

REFERENCES:
patent: 4051301 (1977-09-01), Laitar
patent: 4073343 (1978-02-01), Harnsberger
patent: 4090995 (1978-05-01), Smillie
patent: 4120842 (1978-10-01), Harnsberger
patent: 4336342 (1982-06-01), Dunnavant

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