Use of bisphenol a tar in furan no-bake foundry binders

Details Use of bisphenol a tar in furan no-bake foundry binders Use of bisphenol a tar in furan no-bake foundry binders

1996-01-04

1999-01-05

Jagannathan, Vasu

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524493, 524593, 524594, 524876, B22C 122

Patent

active

058563750

ABSTRACT:
Broadly, the present invention relates to furan no-bake foundry binders where bisphenol A tar (BPAT) is used to replace a portion of the furfuryl alcohol and any conventional filler optionally included in for binder formulation. Reduction in the amount of furfuryl alcohol in the foundry binder formulation may lead to a reduction in the cost and an improvement in early strength of these formulations. Accordingly, in a furan no-bake foundry binder of a resin derived from a major proportion of furfuryl alcohol and optionally fillers, the improvement which comprises at least a fraction of said furfuryl alcohol being bisphenol A tar. Bisphenol A tar also can replace at least a fraction of any filler included in the binder formulation.

REFERENCES:
patent: 5552509 (1996-09-01), Takashima et al.
patent: 5607986 (1997-03-01), Kim et al.

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