PRINTING INK AND COATING MATERIAL CONTAINING POLYVINYL BUTYRAL BASED ON PARTLY HYDROLYZED POLYVINYL ALCOHOL

摘要: PROBLEM TO BE SOLVED: To obtain a printing ink or coating material which has high pigment content at specified viscosity by incorporating, into the same, polyvinyl butyral degree of acetalization and is prepd. from alcohol having hydrolysis. SOLUTION: Polyvinyl 45-80 mol.%, pref. 60-80 hydrolysis 70-96 75-90 incorporated. Pref., used polymn. 200-3,500, still 250-1,000. resultant in range 1-25 wt.%. Thus can be obtd. paste colored with to degree, low-viscosity high-solid