Title:
METHOD FOR PREPARING SOLID CARBAMIC ACID DERIVATIVES
Document Type and Number:
WIPO Patent Application WO/2012/111946
Kind Code:
A3
Abstract:
The present invention relates to a method for preparing solid carbamic acid derivative powder which comprises a step of reacting liquid amine derivatives with carbon dioxides at -30 to 500 ℃ under 0.3 to 100 MPa. In addition, the invention relates to a method for reducing carbamic acid derivative powder with the liquid amine derivatives and carbon dioxides which comprises the steps of: dissolving the prepared carbamic acid derivative powder in a solvent; refluxing the resultant at 50 to 80 ℃; and evaporating the solvent. The method for preparing a carbamic acid derivative powder according to the invention enables easy conversion into pure solid carbamic acid derivative powder without by-products and can remarkably reduce time and energy required for solidification by reacting carbon dioxides and amines with carbon dioxides in high pressure conditions without the use of a solvent. In addition, the prepared solid compounds can be used as a liquid amine substitute or used in a carbamic acid derivative form as necessary.
Inventors:
HUR NAM HWI (KR)
LEE BYEONG NO (KR)
LEE BYEONG NO (KR)
Application Number:
PCT/KR2012/001046
Publication Date:
December 20, 2012
Filing Date:
February 13, 2012
Export Citation:
Assignee:
UNIV SOGANG IND UNIV COOP FOUN (KR)
HUR NAM HWI (KR)
LEE BYEONG NO (KR)
HUR NAM HWI (KR)
LEE BYEONG NO (KR)
International Classes:
C07C269/04; B01J2/00; C07B43/04; C07C211/63; C07C271/02
Foreign References:
| US2927129A | 1960-03-01 | |||
| JP2000504688A | 2000-04-18 | |||
| JPH06345708A | 1994-12-20 | |||
| US7186844B2 | 2007-03-06 |
Attorney, Agent or Firm:
HALLA PATENT&LAW FIRM (949-3 Dogok-dong, Gangnam-gu, Seoul 135-270, KR)
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Claims: