Global Patent Index - EP 1404763 B8

EP 1404763 B8 20071010 - METHOD FOR THE PRODUCTION OF PLANE-PARALLEL PLATELETS BY USING ORGANIC SEPARATING AGENTS

Title (en)

METHOD FOR THE PRODUCTION OF PLANE-PARALLEL PLATELETS BY USING ORGANIC SEPARATING AGENTS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON PLANPARALLELEN PLÄTTCHEN MITTELS ORGANISCHER TRENNMITTEL

Title (fr)

PROCEDE DE PRODUCTION DE PLAQUETTES A FACES PARALLELES AU MOYEN D'UN AGENT DE SEPARATION ORGANIQUE

Publication

EP 1404763 B8 20071010 (DE)

Application

EP 02742774 A 20020521

Priority

  • DE 0201858 W 20020521
  • DE 10124796 A 20010521
  • DE 10150562 A 20011015
  • DE 10151375 A 20011018

Abstract (en)

[origin: WO02094945A1] A novel method for the production of plane-parallel platelets with the following steps is disclosed: a) vapour deposition of a separating agent on a substrate to give a separating agent layer at a sub-atmospheric pressure, b) vapour deposition of a least one product layer on the separating agent layer at a sub-atmospheric pressure and c) dissolving the separating agent layer in a solvent and generation of a suspension with at least one product layer in the form of plane-parallel platelets. Said method is characterised in that the separating agent is selected from the group comprising anthracene, anthraquinone, acetamidophenol, acetylsalicylic acid, camphoric anhydride, benzimidazole, benzene-1,2,4-tricarboxylic acid, biphenyl-2,2-dicarboxylic acid, bis(4-hydroxyphenyl)-sulphone, dihydroxyanthraquinone, hydantoin, 3-hydroxybenzoic acid, 8-hydroxyquinoline-5-sulphonic acid monohydrate, 4-hydroxycoumarin, 7-hydroxycoumarin, 3-hydroxynaphthalene-2-carboxylic acid, isophthalic acid, 4,4-methylene-bis-3-hydroxynaphthalene-2-carboxylic acid, naphthalene-1,8-dicarboxylic acid anhydride, phthalimide and the potassium salt thereof, phenolphthalein, phenothiazine, saccharin and salts thereof, tetraphenylmethane, triphenylene, triphenylmethanol, and mixtures of at least two of said substances. Aromatic compounds with at least one benzene ring are particularly suitable as separating agents. The invention further relates to the use of plane-parallel platelets thus produced and products obtained as above.

IPC 1-7

C09C 1/00; C23C 14/00

IPC 8 full level

C09C 1/00 (2006.01); C09C 1/62 (2006.01); C09C 1/64 (2006.01); C09C 3/06 (2006.01); C09C 3/08 (2006.01); C09C 3/12 (2006.01); C09D 5/24 (2006.01); C09D 11/00 (2006.01); C09D 201/00 (2006.01); C23C 14/00 (2006.01); C23C 14/02 (2006.01)

CPC (source: EP US)

B82Y 30/00 (2013.01 - EP US); C09C 1/62 (2013.01 - EP US); C09C 1/627 (2013.01 - EP US); C09C 1/64 (2013.01 - EP US); C23C 14/0005 (2013.01 - EP US); C23C 14/024 (2013.01 - EP US); C01P 2004/20 (2013.01 - EP US); C01P 2004/62 (2013.01 - EP US); C01P 2004/64 (2013.01 - EP US); C01P 2006/12 (2013.01 - EP US); Y10T 428/31663 (2015.04 - EP US)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 02094945 A1 20021128; AT 305954 T 20051015; BR 0209964 A 20040413; CA 2446428 A1 20021128; CA 2446428 C 20101026; CN 1302074 C 20070228; CN 1610729 A 20050427; DE 50204481 D1 20060216; DK 1404763 T3 20051212; EP 1404763 A1 20040407; EP 1404763 B1 20051005; EP 1404763 B8 20071010; ES 2249594 T3 20060401; JP 2004532334 A 20041021; JP 4511795 B2 20100728; MX PA03010581 A 20041206; US 2004131776 A1 20040708; US 7157116 B2 20070102

DOCDB simple family (application)

DE 0201858 W 20020521; AT 02742774 T 20020521; BR 0209964 A 20020521; CA 2446428 A 20020521; CN 02810319 A 20020521; DE 50204481 T 20020521; DK 02742774 T 20020521; EP 02742774 A 20020521; ES 02742774 T 20020521; JP 2002592411 A 20020521; MX PA03010581 A 20020521; US 47819003 A 20031118