公开(公告)号：US4416829A

公开(公告)日：1983-11-22

申请号：US433009

申请日：1982-10-06

Applicant: Richard J. Lee ,  Adam S. Kurasiewicz ,  Eugene E. Richardson

Inventor： Richard J. Lee ,  Adam S. Kurasiewicz ,  Eugene E. Richardson

IPC: C07F9/6574 ,  C10M137/04 ,  C07F9/15

CPC classification number: C07F9/65744 ,  C07F9/65746 ,  C10M137/04 ,  C10M2223/04 ,  C10M2223/042

Abstract: Cyclic phosphite structure-containing polyalkyl hindered phenol tetramers are disclosed as novel compounds useful to impart to lubricant oils oxidation and corrosion inhibition. A novel preparative method for the cyclic phosphite-containing polyalkyl hindered phenol tetramers is also disclosed wherein at least a molar excess of a tri(C.sub.1 to C.sub.4 alkyl) phosphite is reacted in the presence of iodine as catalyst with a polyalkyl hindered phenol tetramer of the formula: ##STR1## wherein the sum of the carbon atoms in all the R.sub.1, R.sub.2, and R.sub.3 groups is at least 42 and wherein R.sub.1 and R.sub.2 can be C.sub.1 to C.sub.12 alkylhydrocarbon groups and the R.sub.3 groups can each have as many as 200 carbon atoms. The trialkyl phosphite reacts with a pair of adjacent hydroxyl groups to split out 2 molecules of alkanol and form the cyclic phosphite structure: ##STR2## within said tetramer structure. Said R.sub.4 group is the C.sub.1 to C.sub.4 alkyl from the trialkyl phosphite.

Abstract translation: 公开了含有亚磷酸酯结构的多烷基受阻酚四聚体作为赋予润滑油氧化和腐蚀抑制作用的新型化合物。 还公开了一种用于含环状亚磷酸酯的聚烷基受阻酚四聚体的新型制备方法，其中至少摩尔过量的三（C 1 -C 4烷基）亚磷酸酯在碘作为催化剂存在下与多烷基受阻酚四聚体反应 式：其中R 1，R 2和R 3基团中的碳原子之和为至少42，并且其中R 1和R 2可以是C 1至C 12烷基烃基，并且R 3基团各自具有多达200个碳 原子 亚磷酸三烷基酯与一对相邻的羟基反应以分裂出2分子的链烷醇并形成所述四聚体结构内的环状亚磷酸酯结构：。 所述R4基团是来自亚磷酸三烷基酯的C1至C4烷基。