申请人:Kuraray Co., Ltd.
公开号:US05298631A1
公开(公告)日:1994-03-29
An asymmetric spiroorthocarbonate compound having one exomethylene group and represented by the following general formula (1) ##STR1## wherein A represents a group selected from the group consisting of: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a hydrogen atom, a lower alkyl group having not more than 8 carbon atoms, an alkoxy group, a halogen group, a nitro group, a cyano group, an amino group, an amide group, a hydroxyl group or an alkyl ester group having not more than 20 carbon atoms; and R.sup.5, R.sup.6, R.sup.7 and R.sup.8, R.sup.9 through R.sup.14, R.sup.15 through R.sup.22, R.sup.23 through R.sup.28 and R.sup.29 through R.sup.36 each represents a hydrogen atom or a lower alkyl group having not more than 8 carbon atoms; and copolymers containing units therefrom.
一种具有一个外向亚甲基基团的不对称螺环正碳酸酯化合物,其由下列通式(1)表示:
##STR1##
其中A代表从以下组中选择的一种基团:
##STR2##
其中R.sup.1,R.sup.2,R.sup.3和R.sup.4分别代表氢原子,不超过8个碳原子的低级烷基基团,烷氧基,卤素基,硝基,氰基,氨基,酰胺基,羟基或不超过20个碳原子的烷基酯基团;而R.sup.5,R.sup.6,R.sup.7和R.sup.8,R.sup.9到R.sup.14,R.sup.15到R.sup.22,R.sup.23到R.sup.28和R.sup.29到R.sup.36分别代表氢原子或不超过8个碳原子的低级烷基基团;以及含有该化合物单元的共聚物。