Title (en)

5,7-DIFLUORO-3,4-DIHYDRO-2H-NAPHTHALENE-1-ONE DERIVATIVES AND THE USE THEREOF IN LIQUID CRYSTAL MIXTURES

Title (de)

5,7-DIFLUOR-3,4-DIHYDRO-2H-NAPHTHALIN-1-ON-DERIVATE FLÜSSIGKRISTALLINEN MISCHUNGEN

Title (fr)

DERIVES DE 5,7-DIFLUORO-3,4-DIHYDRO-2H-NAPHTALENE-1-ONE POUR MELANGES DE CRISTAUX LIQUIDES

Publication

EP 0944570 A1 19990929 (DE)

Application

EP 97953802 A 19971212

Priority

• DE 19652246 A 19961216
• EP 9706996 W 19971212

Abstract (en)

[origin: DE19652246A1] 5,7-difluoro-3,4-Dihydro-2h-naphthalene-1-one derivatives of formula (I): R<1>(-A<1>-M<1>)a(-A<2>-M<2>)b-B(-M<3>-A<3>)c(-M<4>-A<4>)d-R<2> in which B is (ii) and R<1>(-A<1>-M<1>)a(-A<2>-M<2>) and (-M<3>-A<3>)(-M<4>-A<4>)R<2> mean mesogene radicals, which are suitable as constituents of specially ferroelectric liquid crystal mixtures.

IPC 1-7

C07C 49/755; C09K 19/32; C09K 19/34; C09K 19/40; C07C 49/697; C07D 213/64; C07D 303/12; C07F 7/08; C07C 69/22; C07D 213/61; C07C 69/75

IPC 8 full level

C07C 45/68 (2006.01); C07C 45/71 (2006.01); C07C 49/697 (2006.01); C07C 49/755 (2006.01); C07C 69/017 (2006.01); C07C 69/035 (2006.01); C07D 213/61 (2006.01); C07D 213/64 (2006.01); C07D 303/22 (2006.01); C07F 7/08 (2006.01); C09K 19/32 (2006.01); C09K 19/34 (2006.01); C09K 19/40 (2006.01)

CPC (source: EP)

C07C 45/68 (2013.01); C07C 45/71 (2013.01); C07C 49/697 (2013.01); C07C 49/755 (2013.01); C07C 69/017 (2013.01); C07D 213/61 (2013.01); C07D 213/64 (2013.01); C07D 303/22 (2013.01); C07F 7/0812 (2013.01); C09K 19/322 (2013.01); C09K 19/3444 (2013.01); C09K 19/406 (2013.01); C09K 19/3405 (2013.01); C09K 19/3411 (2013.01); C09K 2019/324 (2013.01); C09K 2019/3408 (2013.01); C09K 2019/3422 (2013.01); C09K 2019/3425 (2013.01)

Citation (search report)

See references of WO 9827045A1

Designated contracting state (EPC)

DE

DOCDB simple family (publication)

DE 19652246 A1 19980618; EP 0944570 A1 19990929; WO 9827045 A1 19980625

DOCDB simple family (application)

DE 19652246 A 19961216; EP 9706996 W 19971212; EP 97953802 A 19971212