Process for preparing high ortho novolac resins

Details Process for preparing high ortho novolac resins Process for preparing high ortho novolac resins

C - Chemistry, Metallurgy

08

G

402/50, 402/53

C08G 8/10 (2006.01) C08G 8/08 (2006.01)

Patent

CA 1107436

ABSTRACT OF THE DISCLOSURE The invention relates to an improved process for preparing high ortho novolac resins, said process in- cluding reacting phenol and formaldehyde in the presence of a divalent electropositive metal oxide, hydroxide or organic salt wherein the improvement comprises conduct- ing said reaction with said catalysts in combination with a divalent electropositive metal salt selected from the group consisting of sulfonates and fluorobor- ates or acids selected from the group consisting of sulfonic and fluoroboric or mixtures thereof.

294579

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