申请人:The Lubrizol Corporation
公开号:US20140228266A1
公开(公告)日:2014-08-14
A bridged alkaline earth metal alkylphenate having reduced monomeric alkylphenol is prepared by reacting (a) a 4-alkylphenol, unsubstituted at the ortho positions, (b) an alkaline earth metal oxide or hydroxide, (c) a bridging agent comprising sulfur or a carbonyl compound of 1 to about 6, or to 4 or to 2, carbon atoms, and (d) a 2,6-dialkylphenol. The amount of the 2,6-dialkylphenol is 0.05 to 3 moles per 1 mole of the 4-alkylphenol; if there is a molar excess of the 2,6-dialkylphenol, then the excess is added after initial reaction.
通过反应(a)未在邻位取代的4-烷基酚,(b)碱土金属氧化物或氢氧化物,(c)包含硫或1至约6,或4或2个碳原子的羰基化合物的桥接剂以及(d)2,6-二烷基酚,制备具有减少单体烷基酚的桥接碱土金属烷基苯酚。2,6-二烷基酚的量为4-烷基酚的1摩尔中的0.05至3摩尔;如果2,6-二烷基酚过量,那么过量的量在初始反应后加入。