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1. US20200239630 - NOVEL ALIPHATIC POLYCARBONATE

Office United States of America
Application Number 16644120
Application Date 03.09.2018
Publication Number 20200239630
Publication Date 30.07.2020
Publication Kind A1
IPC
C08G 64/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
64Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
02Aliphatic polycarbonates
CPC
C08G 64/0241
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
64Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
02Aliphatic polycarbonates
0208saturated
0225containing atoms other than carbon, hydrogen or oxygen
0241containing nitrogen
Applicants NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
SUMITOMO SEIKA CHEMICALS CO., LTD.
Inventors Koji NAKANO
Kiyoshi NISHIOKA
Priority Data 2017-169824 04.09.2017 JP
Title
(EN) NOVEL ALIPHATIC POLYCARBONATE
Abstract
(EN)

The present invention provides an aliphatic polycarbonate that can be thermally decomposed (dewaxed) at a relatively low temperature. The aliphatic polycarbonate comprises a constituent unit represented by formula (1):

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wherein R1, R2, and R3 are identical or different, and each represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms; R4 represents a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms; and n is an integer of 0 to 3.