MODIFIED COLOPHONY RESINS, A PROCESS FOR THEIR PREPARATION, THEIR USE AND PAPER-SIZING AGENTS CONTAINING COLOPHONY RESINS OF THIS TYPE

摘要

Modified colophony resins, a process for their preparation, their use and paper-sizing agents containing colophony resins of this type A b s t r a c t Modified colophony resins are strengthened with .alpha.,.beta.-unsaturated carbonyl compounds and simultaneously converted into the corresponding intermolecular resin acid anhydrides with dehydrating; agents. Paper-sizing agents which are superior to those of the prior art can be prepared from these. KCG 5 - Foreign countries