Title:
DMPA-BASED SOLVENT SYSTEMS FOR THE SYNTHESIS OF POLY(AMIC ACID) AND POLYIMIDE POLYMERS
Document Type and Number:
WIPO Patent Application WO/2018/058343
Kind Code:
A1
Abstract:
The process for synthesizing a poly(amic acid) polymer or a polyimide polymer is improved by using a solvent system consisting essentially of: (A) a first component consisting essentially of N, N-dimethyl propionamide (DMPA), and (B) optionally, a second component consisting essentially of at least one of a sulfoxide, e.g., DMSO, an alkyl phosphate, e.g., triethyl phosphate, and an aprotic glycol ether, e.g., propylene glycol methyl ether acetate.
Inventors:
KIM EUNG KYU (US)
HARRIS WILLIAM J (US)
JIANG QI (CN)
JIANG XIN (CN)
OHBA KAORU (JP)
HARRIS WILLIAM J (US)
JIANG QI (CN)
JIANG XIN (CN)
OHBA KAORU (JP)
Application Number:
PCT/CN2016/100465
Publication Date:
April 05, 2018
Filing Date:
September 28, 2016
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES LLC (US)
KIM EUNG KYU (US)
HARRIS WILLIAM J (US)
JIANG QI (CN)
JIANG XIN (CN)
OHBA KAORU (JP)
KIM EUNG KYU (US)
HARRIS WILLIAM J (US)
JIANG QI (CN)
JIANG XIN (CN)
OHBA KAORU (JP)
International Classes:
C08G73/10
Domestic Patent References:
| WO2015186782A1 | 2015-12-10 | |||
| WO2015161107A1 | 2015-10-22 |
Foreign References:
| JP2013032501A | 2013-02-14 | |||
| JPH01260015A | 1989-10-17 | |||
| CN101649055A | 2010-02-17 | |||
| EP2910591A1 | 2015-08-26 | |||
| US9346927B2 | 2016-05-24 | |||
| US3410826A | 1968-11-12 | |||
| US5789524A | 1998-08-04 | |||
| US5919892A | 1999-07-06 |
Other References:
See also references of EP 3523353A4
Attorney, Agent or Firm:
WU, FENG & ZHANG CO. (CN)
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