Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-05-11
1981-02-24
Hayes, Lorenzo B.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
164 43, 260 28P, 260 38, 525501, C08L 9106
Patent
active
042527007
ABSTRACT:
This invention relates to a solid phenolic resin composition useful as a binder in the preparation of foundry sand cores and molds which comprises a solid novolac resin and a lubricant-containing solid resole resin wherein the lubricant is incorporated into the resole during the preparation of the solid resole. In a preferred binder composition, the resole component of the binder is prepared in the presence of an alkali metal catalyst and an amine catalyst. The invention also includes the process for preparing sand containing foundry cores and molds from the preferred binder composition and the sand foundry core and mold products of said process.
REFERENCES:
patent: 3917555 (1975-11-01), Worschech et al.
patent: 3944514 (1976-03-01), Nishiyama et al.
patent: 4094834 (1978-06-01), Bowers et al.
patent: 4097443 (1978-06-01), Nakamura
patent: 4111253 (1978-09-01), Epstein et al.
patent: 4157993 (1979-06-01), Funabiki et al.
Funabiki Kyohei
Inoue Naomitsu
Matsushima Noriaki
Casella Peter F.
Hayes Lorenzo B.
Mudd James F.
Stein David A.
Sumitomo Durez Company Ltd.
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