公开(公告)号：US4098770A

公开(公告)日：1978-07-04

申请号：US723250

申请日：1976-09-15

申请人： Antoine Berchem ,  Krishan Kumar Sudan ,  Edward Michael Gres

发明人： Antoine Berchem ,  Krishan Kumar Sudan ,  Edward Michael Gres

IPC分类号： C08G8/08 ,  C08G8/28 ,  C08G8/38 ,  C08J3/12 ,  C08L3/00 ,  C08L61/06 ,  C08L97/00 ,  C08G4/00 ,  C08G8/10

CPC分类号： C08J3/12 ,  C08G8/08 ,  C08G8/28 ,  C08G8/38 ,  C08L61/06 ,  C08J2361/14 ,  C08L3/00 ,  C08L97/00

摘要： A method of preparing a modified phenol-formaldehyde resin in solid particulate form comprising reacting together, in an aqueous medium, phenol and formaldehyde, in a ratio of 1.0 mole phenol to between 1.8 and 3.5 moles of formaldehyde, in the presence of between 0.1 and 1.0 moles of a basic catalyst; continuing this reaction until a desired viscosity is reached; modifying the reaction system by adding thereto between 0 and 30%, based on the weight of phenol originally taken of a non-phenolic polyhydroxy compound; spray drying the thus modified liquid resin in a pressure nozzle drier, and chilling the spray dried particulate solid. These solid resins are redispersible in water and stable on storage, compared to the known aqueous, equivalent, systems.

摘要翻译： 一种制备固体颗粒形式的改性酚醛树脂的方法，包括在水性介质中以1.0摩尔苯酚与1.8至3.5摩尔甲醛的比例，在0.1至 1.0摩尔碱性催化剂; 继续该反应直到达到所需的粘度; 基于最初取自非酚多羟基化合物的苯酚的重量，通过加入其中0至30％来改性反应体系; 在压力喷嘴干燥器中喷雾干燥由此改性的液体树脂，并冷却喷雾干燥的颗粒固体。 与已知的水溶液，等效体系相比，这些固体树脂可再分散在水中并在储存时稳定。