Production of aqueous solution of thermosetting resin

Abstract

Abstract PURPOSE:To produce an aqueous solution of a thermosetting resin excellent in waterproofness and ink adhesion and low in HCHO formation, by dissolving a specified polyamide-polyurea in water and reacting the solution with an epihalohydrin and HCHO. CONSTITUTION:A polyamide-polyurea is obtained by subjecting urea and a polyalkylenepolyamine (e.g., diethylenetriamine) to an ammonia elimination reaction, subjecting the product and 0.3-0.7mol, per mol urea, of a dibasic carboxylic acid (e.g., succinic acid) to a dehydration condensation reaction and subjecting the condensate and 0.2-1.5mol, per mol sec. amino group of the polyamine, of urea to an ammonia elimination reaction, or by subjecting 1mol of the acid and 1.4-3.0mol of the polyamine to a dehydration condensation reaction and then subjecting the product and 0.2-1.0mol, per mol amino groups of the polyamine, of urea to an ammonia elimination reaction. Then this polyamide- polyurea is dissolved in water and reacted with 0.02-0.3mol, per mol amino groups of the polyamine, of an epihalohydrin and 0.05-1mol, per mol total urea, of HCHO.

Inventors

• 👤 Toshio Takagishi
• 👤 高岸　壽男
• 👤 Terumasa Saka
• 👤 坂　照政
• 👤 Kenzo Mieno
• 👤 三重野　謙三
• 👤 Shigeru Ura
• 👤 繁 浦

Bibliographic Details