申请人:Clariant International Ltd.
公开号:EP1184442A1
公开(公告)日:2002-03-06
Liquid crystal mixture containing one or several compounds of formula (I) wherein
R1: is H or a linear or branched alkyl group of 1 to 20 C atoms, wherein optionally one -CH2- group being replaced by cyclohexylen-1,4-diyl, or one or two -CH2- groups optionally being replaced by -O-, if non-adjacent to N, or by -C(=O)-, -Si(CH3)2-;
or one or more H optionally being replaced by F or CH3
R2:stands for
a) H or F
b) a linear or branched alkyl group of 1 to 20 C atoms, wherein one or two -CH2- groups optionally being replaced by -O-, -C(=O)O-, -Si(CH3)2-, or one or more H being replaced by F or CH3.
c) a radical of formula (II)
R3, R4, R5, R6: are independently from another an alkyl group of 1 to 8 C atoms
M1, M2: represent independently a single bond, -OC(=O), -C(=O)O-, -OCH2-, -NH-
A: is
a) a linear or branched alkyl group of 1 to 20 C atoms, optionally, if non-adjacent to M1/2, one or two non-adjacent -CH2- groups may be replaced by -O-
b) the group -C(=Y)- wherein Y is CH-Z with Z being phenylen-1,4-diyl, optionally substituted by one to three halogenatoms, alkyl or alkyloxy groups of 1 to 4 C atoms, with the proviso that M1 and M2 are -C(=O)O- and -OC(=O)-,
c) the group -CHY wherein Y is CH2-Z with Z being phenylen-1,4-diyl, optionally substituted by one to three halogenatoms, alkyl or alkyloxy groups of 1 to 4 C atoms, with the proviso that M1 and M2 are -C(=O)O- and -OC(=O)-,
d) a group
wherein
p, q are 0, 1 or 2, the sum of p + q being ≥ 1; M3 is a single bond or -OC(=O)-, -C(=O)O-, -OCH2-, -CH2O-, -C≡C-, -CH2CH2-, -CH2CH2CH2CH2
the radicals
represent independently from another phenylen-1,4-diyl, optionally substitued by one, two or three F, or cyclohexan-1,4-diyl, optionally substituted by one CN, CH3 or F, or pyrimidin-2,5-diyl, optionally substituted by one F, or pyridine-2,5-diyl, optionally substituted by one F, or naphthalin-2,6-diyl, optionally substituted by one, two or three F, or (1,3,4)thiadiazol-2,5-diyl, thiophen-2,4-diyl, thiophen-2,5-diyl, (1,3)dioxan-2,5-diyl, piperidin-1,4-diyl, or piperazin-1,4-diyl
X is H, OH, a linear or branched alkyl or alkyloxy group of 1 to 20 C atoms, wherein one or two -CH2- groups can be replaced by -O-, -C(=O)O-, -Si(CH3)2-, optionally one or more H being replaced by F or CH3
m: is 0 or 1
X and M1-(A)m-M2-R2 together can constitute
a) a ring of 4 to 16 members, optionally substituted by an alkyl radical of 1 to 15 C atoms
b) a combination of two either directly linked or spiro-linked rings of independently from another 4 to 16 members, optionally substituted by an alkyl radical of 1 to 15 C atoms
in either of the three variants the rings independently from another being carbocycles or carbocycles containing B, N, O or S heteroatoms.
含有一个或多个式(I)中的化合物的液晶混合物,其中R1:为H或1至20个C原子的线性或支链烷基,其中可选地一个-CH2-基被环己基-1,4-二基取代,或者一个或两个-CH2-基可选地被-O-取代,如果非相邻于N,则为-C(=O)-,-Si(CH3)2-;或一个或多个H可选地被F或CH3取代。R2:代表a)H或Fb)1至20个C原子的线性或支链烷基,其中一个或两个-CH2-基可选地被-O-,-C(=O)O-,-Si(CH3)2-取代,或一个或多个H被F或CH3取代。c)式(II)中的基团R3,R4,R5,R6:分别独立地是1至8个C原子的烷基M1,M2:分别独立地表示单键,-OC(=O),-C(=O)O-,-OCH2-,-NH-A:a)是1至20个C原子的线性或支链烷基,如果非相邻于M1/2,则可选地用- O-替换一个或两个非相邻的-CH2-基b)-C(=Y)-,其中Y为CH-Z,Z为苯基-1,4-二基,可选地被1至4个C原子的卤素原子,烷基或烷氧基取代,具有M1和M2为-C(=O)O-和-OC(=O)-的条件c)-CHY,其中Y为CH2-Z,Z为苯基-1,4-二基,可选地被1至4个C原子的卤素原子,烷基或烷氧基取代,具有M1和M2为-C(=O)O-和-OC(=O)-的条件d)一组,其中p,q为0,1或2,p + q的总和≥1;M3是单键或-OC(=O)-,-C(=O)O-,-OCH2-,-CH2O-,-C≡C-,-CH2CH2-,-CH2CH2CH2CH2-,基团独立地代表苯基-1,4-二基,可选地取代一个,两个或三个F,或环己基-1,4-二基,可选地取代一个CN,CH3或F,或嘧啶-2,5-二基,可选地取代一个F,或吡啶-2,5-二基,可选地取代一个F,或萘-2,6-二基,可选地取代一个,两个或三个F,或(1,3,4)噻二唑-2,5-二基,噻吩-2,4-二基,噻吩-2,5-二基,(1,3)二氧杂环戊烷-2,5-二基,哌啶-1,4-二基或哌嗪-1,4-二基X为H,OH,1至20个C原子的线性或支链烷基或烷氧基,其中一个或两个-CH2-基可被-O-,-C(=O)O-,-Si(CH3)2-取代,可选地一个或多个H被F或CH3取代m:为0或1X和M1-(A)m-M2-R2一起可以构成a)具有4至16个成员的环,可选地被1至15个C原子的烷基取代b)两个直接连接或螺旋连接的环的组合,独立地具有4至16个成员,可选地被1至15个C原子的烷基取代,在这三种变体中,环独立地为碳环或含有B,N,O或S杂原子的碳环。