MODIFIED PHENOLIC NOVOLAK RESINS AND APPLICATIONS THEREOF
申请人:INDSPEC CHEMICAL CORPORATION
公开号:EP1812487A2
公开(公告)日:2007-08-01
Modified phenolic novolak resins and applications thereof
申请人:Durairaj B. Raj
公开号:US20060069191A1
公开(公告)日:2006-03-30
A modified phenolic novolak resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an aliphatic polyol. The reaction mixture further reacts with a formaldehyde to produce a modified phenolic novolak resin. The reaction is typically carried out in the presence of an acid or a base catalyst. The resulting resin is characterized by a relatively low level of free resorcinol; and rubber compounds containing the resin exhibit low fuming, lower Mooney viscosity (which means better processing), better dynamic stiffness properties (G′), and/or good tear properties. Therefore, the resulting resin can be used as a methylene acceptor compound in a vulcanizable rubber composition.