FOERFARANDE FOER FRAMSTAELLNING AV ETT SLIPMEDEL FOER FLEXIBLA UNDERLAG VILKET INNEHAOLLER KONSTHARTSBINDEMELEL SOM BASERAR SIG PAO EN VATTENHALTIG BLANDNING AV OLIKA FENOLHARTSER CH DET SAO ERHAOLLNA SLIP

摘要

A synthetic resin binder comprising an aqueous mixture of phenolic resins and optionally other additives wherein the mixture of phenolic resins comprises (I) at least one phenol-resol and (II) at least one co-condensate of at least one monohydric phenol and at least one polyhydric phenol with formaldehyde and wherein in component (II) the molar ratio of the quantities of formaldehyde used to the sum of phenols is within the range of from 0.6:1 to 1.5:1, a method for the manufacture of an abrasive by means of said synthetic resin binder and the abrasives itself.