Condensation product and its use

Details Condensation product and its use Condensation product and its use

C - Chemistry, Metallurgy

08

G

402/40, 400/7328

C08G 8/04 (2006.01) B22C 1/22 (2006.01) C08G 8/24 (2006.01) C08G 18/54 (2006.01)

Patent

CA 1170393

ABSTRACT OF THE DISCLOSURE Condensation product of a phenol component with an aldehyde for polyurethane-based binder systems in which the phenol component is a mixture of an unsubstituted phenol with 15 to 40X by weight, based on the total phenol component. of a p-substituted phenol. A process for making such a condensa- tion product. A molding composition for casting purposes containing such a condensation product as a binder in admixture with foundry sand, a polyisocyanate. and a non-polar solvent, and which is cold-cured with a hardening catalyst.

344837

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