申请人:Sumitomo Chemical Company, Limited
公开号:US04257926A1
公开(公告)日:1981-03-24
A method is disclosed for adhering rubber and reinforcing materials simultaneously with vulcanization, without defects such as fume and bloom phenomena of formaldehyde-acceptors, deliquescence and blocking, which is characterized in the use of a vulcanizable rubber composition containing an improved co-polycondensate resin which is prepared by condensing (A) a resol type pre-polycondensate prepared by at least one phenol and formaldehyde or acetaldehyde in the presence of an alkaline catalyst, and (B) resorcinol, m-aminophenol or the like, while distilling off water present in the reaction system, and then solidifying the reaction mixture.
本发明揭示了一种同时使用硫化粘合橡胶和增强材料的方法,不会出现缺陷,如甲醛受体的烟雾和绽放现象,溶解和堵塞现象。其特征在于使用一种可硫化橡胶组合物,该组合物含有改进的共聚缩酚树脂,该共聚缩酚树脂是通过将(A)在碱性催化剂存在下制备的苯酚和甲醛或乙醛的预缩聚物和(B)间苯二酚,m-氨基苯酚或类似物缩合,并在反应体系中蒸馏水,然后固化反应混合物制备而成。