MODIFIED COLOPHONY ROSINS, A PROCESS FOR THEIR PREPARATION, THEIR USE AND PAPER-SIZING AGENTS CONTAINING SUCH MODIFIED COLOPHONY ROSINS

摘要

Modified colophony rosins, a process for their preparation, their use and paper-sizing agents containing such modified colophony rosins A b s t r a c t Modified colophony rosins are reinforced with formaldehyde and/or ?,.beta.-unsaturated carbonyl compounds and are also esterified with 2.5 to 10 % by weight of tertiary amino alcohols, based on the starting rosin. From these papersizing agents can be prepared which are superior to those of the art.