摘要:
Liquid crystalline ethane derivatives prepared by the described method in order to form liquid crystalline compositions with known liquid crystalline compounds have a general formula 1 : wherein, when ring A indicates a 1,4-substituted benzene ring, then ring B indicates 1,4-substituted benzene ring or 1,4- trans substituted cyclohexane ring or 1,4-substituted bicyclo [2,2,2] octane ring or 2,5-substituted pyrimidine ring or 2,5- substituted 1,3-dioxane ring, or when ring B indicates a 1,4- substituted benzene ring, then A indicates 1,4-trans substituted cyclohexane ring or 1,4-substituted bicylo [2,2,2] octane ring or 2,5-substituted pyrimidine ring or 2,5-substituted 1,3-dioxane ring, and R indicates a normal alkyl chain C n H 2n-1 or a non-branched alkoxyl group C n H 2n+1 O or an alkylcarboxylic group C n H 2n+1 COO or an alkylcarbobato group C n H 2n+1 OCOO or a branched alkyl chain CH 3 -CH 2 -CH/CH 3 /-/ CH 2 / k ora vbranched alkoxy group CH 3 -CH 2 -CH/CH 3 /-/CH 2 / k -O, n is an integer number and assumes values from 1 to 12, k is an integer number and assumes a values from 1 to 3, and 1 and m assume values 1 or 0. Liquid crystalline compositions containing the compound of formula 1 are characterized by low viscosity and are applied displays.
摘要翻译:为了形成与已知的液晶化合物的液晶组合物由所描述的方法的液晶乙烷衍生物具有通式I:我worin,如果环A idicates 1.4 substituiertem苯环,则环B表示1.4 取代的苯环或1,4-反式 - 取代的环己烷环或1,4-取代的二环[2,2,2]辛烷环或2.5取代的嘧啶环或2.5取代的1.3-二恶烷环,或者如果环B表示1.4取代 苯环,则A表示1,4-反式 - 取代的环己烷环或1,4-取代的二环[2,2,2]辛烷环或2.5取代的嘧啶环或2.5取代的1,3-二恶烷环,和R表示正烷基链为C n H 2n个 1或者非支链的烷氧基为C n H 2n + 1个O或在烷基羧酸基团为C n H 2n + 1个COO或碳酸根团的烷基为CnH2n + 1OCOO或支链烷基链CH3-CH2-CH(CH3) - (CH2)K-或支链烷氧基 基CH3-CH2-CH(CH3) - (CH2)KO,其中n是一个整数和值假设 从1至12,k为一个整数,并假设为1的值至3和l和m假设值1或0满足下述条件做了L + M> 0,并且如果环A表示的1,4-二取代双环[2,2, 2]辛烷环,使L + M =第0 含式I化合物的液晶组合物I通过低粘度表征并在显示器中应用。
摘要:
New compounds of the general formula I: wherein R¹ is a normal or branched alkyl chain H 2n+1 C n - or a normal or branched alkoxy group H 2n+1 C n O-, n being an integer number from 1 to 12; X is a bridging group from the set: -COO-, -OCO-, -CH₂O-, -OCH₂-, -COCH₂-, -CHOHCH₂-, -CH=CH-,-CH₂CH₂-, -CHClCH₂-, -CHCNCH₂-, -CHBrCH₂-, -CHFCH₂-, -CHOCH₃CH₂-; Y is a terminal group from the set: -NO₂, -NH₂, -NCS, -Cl, -Br, -F; the cyclohexane rings are trans-1,4-disubstituted ones and the benzene rings are 1,4-disubstituted ones, and besides one of them may contain sometimes additionally a fluorine atom in position 2 or 3, k and l are integer numbers from the set: 0, 1, 2 fulfilling the condition that k+1=2 or 3; besides, if X denotes the -COO- or -OCO- group, then k+1 also may assume the value of 1 , their manufacture and liquid crystalline admixture containing them and use for electro-optical devices as dielectrics are described.
摘要:
New compounds of the general formula I: wherein R¹ is a normal or branched alkyl chain H 2n+1 C n - or a normal or branched alkoxy group H 2n+1 C n O-, n being an integer number from 1 to 12; X is a bridging group from the set: -COO-, -OCO-, -CH₂O-, -OCH₂-, -COCH₂-, -CHOHCH₂-, -CH=CH-,-CH₂CH₂-, -CHClCH₂-, -CHCNCH₂-, -CHBrCH₂-, -CHFCH₂-, -CHOCH₃CH₂-; Y is a terminal group from the set: -NO₂, -NH₂, -NCS, -Cl, -Br, -F; the cyclohexane rings are trans-1,4-disubstituted ones and the benzene rings are 1,4-disubstituted ones, and besides one of them may contain sometimes additionally a fluorine atom in position 2 or 3, k and l are integer numbers from the set: 0, 1, 2 fulfilling the condition that k+1=2 or 3; besides, if X denotes the -COO- or -OCO- group, then k+1 also may assume the value of 1 , their manufacture and liquid crystalline admixture containing them and use for electro-optical devices as dielectrics are described.