B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
117/48
B22C 1/22 (2006.01) C08K 5/06 (2006.01) C08K 9/08 (2006.01)
Patent
CA 1180609
ABSTRACT This invention relates to a method for the production of an improved resin coated lubricated sand for use in shell molding processes, wherein the resin coated sand is especially useful in casting operations using aluminum, magnesium and their alloys. The sand is coated with a phenolic type resin containing a lubricant and an additive to assist in the thermal decom- positions of the binder to provide a more efficient removal of the sand grains. The additive is an organic bromide compound of the type: Image wherein: n and m are integers 0, 1 or 2, and n and m cannot be O at the same time. Br position is ortho to -ox x is selected from: -H, -C2H4OH, - CH2- CH = CH2 and -CH2 -CH BR - CH2BR.
410669
Matsushima Noriaki
Saeki Yukio
Tokunaga Yukio
Marcoux & Sher Swabey Mitchell Houle
Sumitomo Durez Company Ltd.
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