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1. (WO2019048371) METHOD FOR CLEANING PHOSGENE-CONDUCTING APPARATUSES
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/048371 International Application No.: PCT/EP2018/073596
Publication Date: 14.03.2019 International Filing Date: 03.09.2018
IPC:
B01J 8/02 (2006.01) ,C07C 263/10 (2006.01) ,C07C 265/14 (2006.01) ,C01B 32/80 (2017.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
02
with stationary particles, e.g. in fixed beds
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
263
Preparation of derivatives of isocyanic acid
10
by reaction of amines with carbonyl halides, e.g. with phosgene
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
265
Derivatives of isocyanic acid
14
containing at least two isocyanate groups bound to the same carbon skeleton
[IPC code unknown for C01B 32/80]
Applicants:
COVESTRO DEUTSCHLAND AG [DE/DE]; Kaiser-Wilhelm-Allee 60 51373 Leverkusen, DE
MING, Zhangyong; CN (US)
Inventors:
MING, Zhangyong; CN
TAUBE, Wolfgang; DE
MAO, Yiming; CN
GAI, Yuguo; CN
Agent:
LEVPAT; Covestro AG, Gebäude 4825 51365 Leverkusen, DE
Priority Data:
17202500.920.11.2017EP
PCT/CN2017/10072806.09.2017CN
Title (DE) METHOD FOR CLEANING PHOSGENE-CONDUCTING APPARATUSES
(EN) METHOD FOR CLEANING PHOSGENE-CONDUCTING APPARATUSES
(FR) PROCÉDÉ DE NETTOYAGE D'UNE PLAQUETTE DE SEMI-CONDUCTEURS
Abstract:
(DE) COV 17 9 046- Foreign Countries - 17 - METHOD FOR CLEANING PHOSGENE-CONDUCTING APPARATUSES A b s t r a c t The invention relates to a method for cleaning a phosgene-conducting apparatus by pressurization with ammonia gas to constant pressure. In this way, phosgene residues in the apparatus to be 5 cleaned are decomposed effectively.
(EN) The invention relates to a method for cleaning a phosgene-conducting apparatus by pressurization with ammonia gas to constant pressure. In this way, phosgene residues in the apparatus to be cleaned are decomposed effectively.
(FR) L'invention concerne un procédé de nettoyage d'un appareil conducteur de phosgène par mise sous pression avec du gaz ammoniac à pression constante. De cette manière, les résidus de phosgène dans l'appareil à nettoyer sont décomposés efficacement.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)