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1. (WO2017093866) AN IMPROVED PROCESS FOR THE PREPARATION OF INDIGO CARMINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/093866 International Application No.: PCT/IB2016/057126
Publication Date: 08.06.2017 International Filing Date: 25.11.2016
IPC:
C09B 67/00 (2006.01) ,C08G 61/12 (2006.01) ,C09B 61/00 (2006.01) ,C09B 69/00 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
67
Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solvents; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
61
Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
12
Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
61
Dyes of natural origin prepared from natural sources
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
69
Dyes not provided for by a single group of this subclass
Applicants:
DISHMAN PHARMACEUTICALS AND CHEMICALS LIMITED [IN/IN]; Survey No. 47, Paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand, Gujarat, Ahmedabad 382220, IN
Inventors:
VYAS, Janmejay, Rajnikant; IN
DHOTRE, Himani; IN
SARMA, Narasimha; IN
PATEL, Dilip, N; IN
SANGANI, Piyush; IN
SHAH, Arpan, Kiritbhai; IN
PATEL, Babulal, R; IN
WADIA, Devang; IN
Agent:
MAJUMDAR, Subhatosh; IN
GANGULI, Dr., Sanchita; IN
SEN, Abhishek; IN
VENKATESH, Mythili; IN
MAJUMDAR, Amrita; IN
KUNDU, Subarna; IN
CHAUBEY, Priyanka; IN
Priority Data:
4535/MUM/201501.12.2015IN
Title (EN) AN IMPROVED PROCESS FOR THE PREPARATION OF INDIGO CARMINE
(FR) PROCÉDÉ DE PRÉPARATION AMÉLIORÉ DE CARMIN D'INDIGO
Abstract:
(EN) The present invention relates to an improved process for preparation of Indigo carmine of Formula (I), in high purity more than 99.5%.
(FR) L'invention concerne un procédé amélioré pour préparer du carmin d'indigo de formule (I) avec une pureté supérieure à 99,5%. (I)
front page image
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, JP, KE, KG, 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)
Also published as:
AU2016362753CA3007051KR1020180087412IN201827020668EP3383956US20180346727