申请人:SUMITOMO SEIKA CHEMICALS CO., LTD.
公开号:US20220098364A1
公开(公告)日:2022-03-31
An object of this invention is to find a method for introducing a functional group into an aliphatic polycarbonate without impairing the excellent thermal decomposition property of the aliphatic polycarbonate.
An aliphatic polycarbonate comprising a constituent unit represented by formula (1):
wherein R
1
, R
2
, and R
3
are identical or different, and each represents a hydrogen atom, a C
1-10
alkyl group optionally substituted with one or more substituents, or a C
6-20
aryl group optionally substituted with one or more substituents, wherein two groups from among R
1
to R
3
, taken together with the carbon atom or carbon atoms to which these groups are attached, may form a substituted or unsubstituted, saturated or unsaturated 3- to 10-membered aliphatic ring; and X represents a divalent group containing one or more heteroatoms or an alkylene group having 3 or more carbon atoms, and
a constituent unit represented by formula (2):
wherein R
4
, R
5
, R
6
, and R
7
are identical or different, and each represents a hydrogen atom, a C
1-10
alkyl group optionally substituted with one or more substituents, or a C
6-20
aryl group optionally substituted with one or more substituents, wherein two groups from among R
4
to R
7
, taken together with the carbon atom or carbon atoms to which these groups are attached, may form a substituted or unsubstituted, saturated or unsaturated 3- to 10-membered aliphatic ring,
the content of the constituent unit represented by formula (1) being 0.1 mol % or more and 1.5 mol % or less, based on the total amount of the constituent units of formula (1) and formula (2).