Foundry molding compositions

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 19R, 26099818, C08K 336

Patent

active

042500761

ABSTRACT:
These compositions comprise sand, a novolac binder resin and a hot distortion additive comprising a modified novolac resin which is prepared by co-reacting an alkylphenol with phenol and formaldehyde or by post-alkylating the novolac resin by means of alkylating compounds selected from alkenes, vinyl benzenes and unsaturated alicyclic compounds.

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patent: 3485797 (1969-12-01), Robins
patent: 3709849 (1973-01-01), Lemon et al.
patent: 4051098 (1977-09-01), Takemura et al.
patent: 4089837 (1978-05-01), Luttinger et al.
patent: 4157993 (1979-06-01), Funabiki et al.

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