A novel 4-substituted-1,2,3,6-tetrahydrophthalic acid anhydride represented by the structural formula [I]: ##STR1## where R.sup.1 represents a lower alkoxy group, and R.sup.2 and R.sup.3 each represents a lower alkyl group or a lower alkoxy group, said 4-substituted-1,2,3,6-tetrahydrophthalic acid anhydride being liquid. The novel compound is useful as coupling agents, plasticizers, curing agents, etc.
一种新的4-取代-1,2,3,6-四氢
酞酸酐,其
化学结构式[I]为:##STR1##其中,R1代表低级烷氧基,R2和R3分别代表低级烷基或低级烷氧基,所述4-取代-1,2,3,6-四氢
酞酸酐为液态。该新化合物可用作
偶联剂、
增塑剂、固化剂等。