公开(公告)号：US4243780A

公开(公告)日：1981-01-06

申请号：US923733

申请日：1978-07-11

申请人： Anatoly A. Kruglikov ,  Militina A. Nikolaeva ,  Jury P. Vasin ,  Zolya Y. Itkis ,  Vladimir A. Shirinkin ,  Ida A. Zimina ,  Vladimir A. Strupinsky ,  Valery V. Koposov

发明人： Anatoly A. Kruglikov ,  Militina A. Nikolaeva ,  Jury P. Vasin ,  Zolya Y. Itkis ,  Vladimir A. Shirinkin ,  Ida A. Zimina ,  Vladimir A. Strupinsky ,  Valery V. Koposov

IPC分类号： B22C1/22 ,  C08G16/02 ,  C08L61/34 ,  C08L45/00

CPC分类号： B22C1/224 ,  C08G16/0262 ,  C08L61/34

摘要： A method for preparing a carbamide-furan resin comprises reacting a urea-formaldehyde resin unlimitedly soluble in water with urea at a temperature within the range of from 50.degree. to 85.degree. C. and modifying the resulting urea-formaldehyde resin with furyl alcohol at a ratio therebetween expressed in parts by weight equal to 100:20-200 respectively at a temperature within the range of from 50.degree. to 85.degree. C., pH of from 7.2 to 8.9 simultaneously with dehydration of the product being modified under vacuum.

摘要翻译： 制备脲 - 呋喃树脂的方法包括使不溶于水的脲 - 甲醛树脂与脲在50至85℃的温度下反应，并将所得脲醛树脂与呋喃醇在 比率分别以等于100:20-200的重量份表示，在50至85℃的温度下，pH为7.2至8.9，同时在真空下改性产物的脱水。