The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2024
Filed:
Jan. 21, 2020
Sumitomo Seika Chemicals Co., Ltd., Hyogo, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo, JP;
MURATA MANUFACTURING CO., LTD., Nagaokakyo, JP;
Abstract
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, R, and Rare identical or different, and each represents a hydrogen atom, a Calkyl group optionally substituted with one or more substituents, or a Caryl group optionally substituted with one or more substituents, wherein two groups from among Rto R, 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, anda constituent unit represented by formula (2): wherein R, R, R, and Rare identical or different, and each represents a hydrogen atom, a Calkyl group optionally substituted with one or more substituents, or a Caryl group optionally substituted with one or more substituents, wherein two groups from among Rto R, 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,