Polycarbonate polyol compositions and methods

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United States of America Patent

PATENT NO 9809678
APP PUB NO 20160264728A1
SERIAL NO

15161684

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Abstract

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In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

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Patent OwnerAddress
SAUDI ARAMCO TECHNOLOGIES COMPANYP O BOX 62 DHAHRAN 31311

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allen, Scott D Ithaca, US 95 3010
Cherian, Anna E Ithaca, US 26 1109
Coates, Geoffrey W Lansing, US 93 1887
Farmer, Jay J Ithaca, US 89 1719
Gridnev, Alexei A Ithaca, US 37 591
Simoneau, Chris A Oxford, US 22 906

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