Patent · US Active

Polycarbonate block copolymers

US10392556B2 · kind B2 · utility

9Cited by

44References

39Claims

0Family size

Assignee

Saudi Aramco Technologies Company · SA

Inventors

Scott D. Allen · Ithaca, US
Christopher A. Simoneau · Ithaca, US
John M. Salladay · Carmel, US
David M. Hatfield · Midland, US
John W. Stevens · Gillingham, GB

Key dates

Filing date	Mar 16, 2018
Grant date	Aug 27, 2019
Priority date	—
Expiry date	Mar 16, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/54
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The disclosure pertains to amphiphilic block copolymers comprising an aliphatic polycarbonate chain coupled to a hydrophilic polymer. Such amphiphilic polymers may have the formula A-L-B, where A- is a polycarbonate or polyethercarbonate chain having from about 3 to about 500 repeating units, L is a linker moiety and —B is a hydrophilic oligomer having from about 4 to about 200 repeating units. Provided copolymers are useful as surfactants capable of emulsifying aqueous solutions and supercritical carbon dioxide. Provided copolymers also have utility as additives for use in enhanced oil recovery methods.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.