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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING SOLID POWDER DERIVED FROM CARBAZIC ACID
Document Type and Number:
WIPO Patent Application WO/2012/091261
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing solid powder derived from carbazic acid, which involves inducing a reaction of a liquid hydrazine derivative with carbon dioxide at a high pressure of about 0.5 MPa to about 100 MPa. During the reaction, the pressure may range from about 0.5 MPa to about 100 MPa. Although the reaction of the carbon dioxide with the liquid hydrazine derivative occurs when the pressure is adjusted to below about 0.5 MPa, sticky deposits having a gel form may be gradually generated as deposits having a powder form are not generated.

Inventors:
HUR, Nam Hwi (302 Bangbae Rexle, 802-10 Bangbae-dong, Seocho-gu, Seoul 137-060, 137-060, KR)
허남회 (서울특별시 서초구 방배동 802-10 방배렉슬 302호, 137-060 Seoul, 137-060, KR)
Application Number:
KR2011/007573
Publication Date:
July 05, 2012
Filing Date:
October 12, 2011
Export Citation:
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Assignee:
INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY (Sogang Univ, 1 Sinsu-dong Mapo-gu, Seoul 121-742, 121-742, KR)
서강대학교 산학협력단 (서울 마포구 신수동 1 서강대학교, 121-742 Seoul, 121-742, KR)
HUR, Nam Hwi (302 Bangbae Rexle, 802-10 Bangbae-dong, Seocho-gu, Seoul 137-060, 137-060, KR)
International Classes:
C07C281/02; B01D11/02; B01J10/00; B01J16/00
Foreign References:
JPH08134038A
US2865714A
Other References:
AGARWAL R. K. ET AL.: 'Oxocation complexes of carbazic acids' ORIENTAL JOURNAL OF CHEMISTRY vol. 1, no. 2, 1985, pages 85 - 88
STAAL E. ET AL.: 'Carbamates. IV. The carbamate of hydrazine' DANSK TIDSSKRIFT FOR FARMACI vol. 25, no. 1, 1951, pages 1 - 12
Attorney, Agent or Firm:
HALLA PATENT&LAW FIRM (9F KAMCO Yangjae Tower, 949-3 Dogok-dong Gangnam-gu, Seoul 135-270, 135-270, KR)
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Claims: