EP2297165A1 - Polymerisierbare chirale verbindungen, enthaltend 2,6-naphthyl- und isomannit-einheiten, und deren verwendung als chirale dotierstoffe - Google Patents

Polymerisierbare chirale verbindungen, enthaltend 2,6-naphthyl- und isomannit-einheiten, und deren verwendung als chirale dotierstoffe

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Publication number
EP2297165A1
EP2297165A1 EP09765748A EP09765748A EP2297165A1 EP 2297165 A1 EP2297165 A1 EP 2297165A1 EP 09765748 A EP09765748 A EP 09765748A EP 09765748 A EP09765748 A EP 09765748A EP 2297165 A1 EP2297165 A1 EP 2297165A1
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EP
European Patent Office
Prior art keywords
formula
independently
heteroaryl
substituents
alkyl
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EP09765748A
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German (de)
English (en)
French (fr)
Inventor
Olivier Enger
Markus Hoffmann
Jochen Brill
Stephan Maurer
Bernd Ziegler
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BASF SE
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BASF SE
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Priority to EP09765748A priority Critical patent/EP2297165A1/de
Publication of EP2297165A1 publication Critical patent/EP2297165A1/de
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
    • C07D493/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/58—Dopants or charge transfer agents
    • C09K19/586—Optically active dopants; chiral dopants
    • C09K19/588—Heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • C09K2019/0448—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition

Definitions

  • the present invention relates to compounds of general formula I.
  • W is a grouping (Y 4 -T 2 -) s (Y 3 -A 2 -) t Y 2 -Z 2 ,
  • Z 1 , Z 2 independently of one another are hydrogen, optionally substituted C 1 -C 20 -alkyl in which the carbon chain may be interrupted by oxygen atoms in ether function, sulfur atoms in thioether function or by nonadjacent imino or C 1 -C 4 -alkylimino groups, or reactive radicals, via which a polymerization can be brought about,
  • a 1 , A 2 are, independently of one another, spacers of 1 to 30 carbon atoms in which the carbon chain may be interrupted by oxygen atoms in ether function, sulfur atoms in thioether function or by nonadjacent imino or C 1 -C 4 -alkylimino groups,
  • Y 1 , Y 2 are each independently a single chemical bond, oxygen, sulfur, -CO-, -O-CO-, -CO-O-, -S-CO-, -CO-S-, -NR-CO- or - CO-NR-,
  • Y 4 is a single chemical bond, oxygen, sulfur, -CO-, -O-CO-,
  • Y 6 is a single chemical bond or CO-
  • R is hydrogen or C 1 -C 4 -alkyl
  • T 1 , T 2 independently of one another divalent saturated or unsaturated, optionally substituted and optionally fused iso- or heterocyclic radicals,
  • Q is halogen, NO 2 , NO, CN, CHO, L 1 , CO-L 1 , X 1 -CO-L 1 , X 1 -SO-L 1 ,
  • Ci-C 2 O -alkyl C 2 -C 20 alkenyl, C 2 -C 20 -alkyl kinyl, C 6 -Cio-aryl, hetero- roaryl having 2 to 12 carbon atoms, C6-Cio-aryl-Ci -C 2 ⁇ alkyl,
  • L 2 ' , CO-X 2 -L 2' , O-CO-X 2 -L 2 ' , SO-X 2 -L 2' and SO 2 -X 2 -L 2 ' may be substituted
  • L 1 ' is hydrogen or, independently of L 1, the same meaning as L 1 ,
  • L 2 ' is hydrogen or independently of L 2 the same meaning as
  • X 1 , X 2 independently of one another oxygen, sulfur or NL 1 ' or NL 2' ,
  • r, t are independently 0 or 1
  • q 0, 1, 2, 3 or 4.
  • the invention relates to a liquid-crystalline composition containing at least one compound of the invention, and the use of the inventive chiral compounds as dopants.
  • Numerous compounds do not go directly into the liquid, disordered state when heated from the crystalline state with defined local and remote order of the molecules, but go through a liquid-crystalline phase in which the molecules are mobile, but the molecular axes form an ordered structure.
  • Elongated molecules often form nematic liquid-crystalline phases, which are characterized by an arrangement of long-range orientation by parallel arrangement of the longitudinal molecular axes. If such a nematic phase contains chiral compounds or chiral moieties, a chiral nematic or cholesteric phase can form, which is characterized by a helical superstructure.
  • liquid crystalline materials in particular nematic, chiral nematic or cholesteric materials, inter alia in optical or electro-optical applications of interest.
  • the temperature range in which the liquid crystalline phase occurs is outside the desired application temperature, or it extends only over a small temperature interval.
  • chiral nematic phases are set Requires chiral compounds / dopants, which are as compatible as possible with the nematic host phase and cause an oversize large twist, ie have an oversized "Helical Twisting Power"("HTP").
  • liquid crystalline materials containing 2,6-naphthyl residues in particular appear to have high potential.
  • suitable dopants must also be available for such liquid-crystalline materials in order, for example, to be able to set chiral nematic phases having a sufficient phase width in the desired case.
  • Polymerizable dopants which can contain or contain isomannitol radicals can be found, for example, in the publications WO 95/16007 A1, EP 0 750 029 A2 and DE 198 43 724 A1, but compounds according to the invention, as described in the beginning, are neither mentioned nor mentioned there suggested.
  • Ci-C2o-alkyl whose d- C2o carbon chain may be interrupted by oxygen atoms in ether function, for example methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec- Butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, 2-methylpentyl, heptyl, hept-3-yl, octyl, 2-ethylhexyl, isooctyl, nonyl, isononyl, decyl, Isodecyl, undecyl, dodecyl, tridecyl, 3,5,5,7-tetramethylnonyl, isotridecyl (the above designations isooctyl, isononyl, iso
  • Suitable reactive radicals Z 1 and Z 2 via which a polymerization can be brought about, are, for example
  • polymerization is to be understood as meaning all the construction reactions of polymers, that is to say addition polymerizations as chain reactions, addition polymerizations as step reactions and condensation polymerizations.
  • R 'of the reactive radicals shown above by way of example stand for hydrogen or C 1 -C 4 -alkyl, ie methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl or tert-butyl and can be identical or to be different.
  • cyanate radicals can spontaneously trimerize to the corresponding cyanurates, those with cyano radicals, in particular with catalysis of acids, such as hydrochloric acid, or bases, to the corresponding triazines.
  • Connections with Epoxide, thiirane, aziridine, isocyanate and isothiocyanate groups usually require further compounds with complementary reactive groups for the polymerization.
  • isocyanates can polymerize with alcohols to form urethanes and with amines to form urea derivatives. The same applies to thiiranes and aziridines.
  • the complementary reactive groups may either be present in a second compound according to the invention which is mixed with the former, or they may be introduced into the polymerization mixture by auxiliary compounds containing two or more of these complementary groups. If these compounds contain in each case two of these reactive groups, linear polymers with a predominantly thermoplastic character are formed. If the compounds contain more than two reactive groups, crosslinked polymers are formed which are particularly stable mechanically.
  • the maleimido group is particularly suitable for radical copolymerization with olefinic compounds such as styrene.
  • Preferred reactive radicals Z 1 and Z 2 in the compounds according to the invention are selected from the group consisting of
  • Preferred reactive groups Z 1 -Y 1 and Z 2 -Y 2 in the compounds according to the invention are selected from the group consisting of
  • variable R appearing in the bridges Y 1 to Y 5 is also C 1 -C 4 -alkyl, ie methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl or tert-butyl.
  • Suitable spacers A 1 and A 2 are all groups known for this purpose.
  • the spacers contain 1 to 30, preferably 3 to 12 carbon atoms and consist of predominantly linear aliphatic groups. They may be interrupted in the chain, for example, by non-adjacent oxygen or sulfur atoms or imino or C 1 -C 4 -alkyl-imino groups, such as methylimino groups.
  • Possible substituents for the spacer chain are fluorine, chlorine, bromine, cyano, methyl and ethyl.
  • Representative spacers A 1 and A 2 are, for example:
  • the radicals T 1 and T 2 are divalent saturated or unsaturated iso- or heterocyclic radicals. These can not only consist of one, but also of several condensed rings. Thus, for example, divalent quinoline, decalin or naphthalene radicals may also be considered for T 1 and T 2 .
  • radicals T 1 and T 2 in the compounds of the formula I are preferably divalent radicals selected from the group consisting of
  • radicals T 1 and T 2 in the compounds of the formula I are divalent radicals selected from the group consisting of
  • radicals independently of the specific choice of the substituents Q of the 2,6-naphthyl radical in formula I, have up to four (q equals 0, 1, 2, 3 or 4) identical or different substituents Q of the general definition already given above may be substituted.
  • variables L 1 and L 1 ' occurring in the definition of the variable Q in the meaning of a C 1 -C 20 -alkyl whose C 1 -C 20 carbon chain is represented by oxygen atoms in ether function, sulfur atoms in thioether function, nonadjacent imino, ci C2o-alkylimino and / or carbonyl groups may be interrupted, as well as for the variables L 2 and L 2 ' in the meaning of a Ci-C2o-alkyl have already been listed by way of example in the variables Z 1 and Z 2 .
  • Examples of the variables L 1 and L 1 ' occurring in the definition of the variable Q in the meaning of a C 2 -C 20 -alkenyl, whose C 2 -C 20 -carbon chain is represented by oxygen atoms in ether function, sulfur atoms in thioether function, non-adjacent imino, C 1 -C 20 -oxo Alkylimino and / or carbonyl groups may be interrupted, and for the variables L 2 and L 2 ' in the meaning of a C2-C2o-alkenyl are in particular C 2 -C 20 -alk-1-enyl radicals.
  • These residues can be derived from suitable residues previously exemplified by the variables Z 1 and Z 2 by formal replacement of two hydrogen atoms located on adjacent carbon atoms by another carbon-carbon bond.
  • Examples of the variables L 1 and L 1 ' occurring in the definition of the variable Q in the meaning of a C 2 -C 20 -alkynyl, whose C 2 -C 20 -carbon chain is represented by oxygen atoms in ether function, sulfur atoms in thioether function, non-adjacent imino, C 1 -C 2 -oxyno Alkylimino and / or carbonyl groups may be interrupted, and for the variables L 2 and L 2 ' in the meaning of a C2-C2o-alkynyl are in particular C 2 -C 20 -alk-1-ynyl radicals.
  • These residues can be derived from suitable residues previously exemplified by the variables Z 1 and Z 2 by formal replacement of four hydrogen atoms located on adjacent carbon atoms by two more carbon-carbon bonds.
  • variables L 1 and L 1 ' occurring in the definition of the variable Q are the meaning of C6-Cio-aryl-C2-C2o-alkenyl, C ⁇ -Cio-aryl-C2-C2o-alkynyl, heteroaryl-C1-C2o-alkyl, heteroaryl-C2-C2o-alkenyl and heteroaryl-C2-C2o-alkynyl with in each case 2 to 12 carbon atoms in the heteroaryl radical, the C1-C20 carbon chain being characterized by oxygen atoms in ether function, sulfur atoms in thioether function, nonadjacent imino, C 1 -C 20 -alkylimino and / or carbonyl groups may be interrupted, and for the variables L 2 and L 2 ' in the meaning of C ⁇ - Cio-aryl-Ci-C 2 o-alkyl, C6-Cio-aryl-C 2 -C 2 o-alkenyl,
  • phenyl and naphthyl are suitable as C ⁇ -C-io-Arv 1.
  • L 1 and L 1 ' and L 2 and L 2' are as heteroaryl having 2 to 12 carbon atoms such radicals in question, which, for example, of pyrrole, furan, thiophene, pyrazole, isoxazole, Isothiazole, imidazole, 1H-1, 2,3-triazole, 1H-1, 2,4-triazole, pyridine, pyrazine, pyridazine, 1H-azepine, 2H-azepine, oxazole, thiazole, 1, 2,3 -, 1, 2,4- or 1, 3,4-oxadiazole, 1, 2,3-, 1, 2,4- or 1, 3,4-thiadiazole and optionally the benzo or dibenzoanell faced, such as quinoline , Isoquinoline, indole, benzo [b] furan (coumarone), benzo [b] thiophene (thionaphthen
  • the C ⁇ -Cio-aryl or heteroaryl having 2 to 12 carbon atoms with one or more substituents can be halogen, NO 2 , NO, CN, CHO, L 2 , CO-L 2 , X 2 -CO-L 2 , X 2 -SO-L 2 , X 2 -SO 2 -L 2 , X 2 -L 2 ' , CO-X 2 -L 2' , O-CO -X 2 -L 2 ' , SO-X 2 -L 2' and SO 2 -X 2 -L 2 ' .
  • variable Q occurring halogen means fluorine, chlorine, bromine or iodine, in particular fluorine or chlorine.
  • variables X 1 and X 2 occurring in the definition of the variable Q independently of one another denote oxygen, sulfur or NL 1 ' or NL 2' .
  • variables Y 4 and T 2 have the same meaning as previously stated and for s ' > 0 the variables Y 4 and for s ' > 1 the variables T 2 may be the same or different from each other.
  • variable W thus corresponds to the formula Ib shown below:
  • G 1 and G 2 are the moieties Z 1 -Y 1 -A 1 -O-COO- or - (Y 3 -A 2 -) t Y 2 -Z 2 .
  • G 1 and G 2 Z 1 -Y 1 -A 1 -O-COO- or -OOC-OA 2 -Y 2 -Z 2 mean.
  • those compounds of the formulas I and Ic are preferred, taking into account the previous preferences, in which at least one of the radicals Z 1 and Z 2 represents a reactive radical.
  • preference is given to those compounds in which at least one of the reactive radicals Z 1 and Z 2
  • Another object of the present invention is a liquid crystalline composition containing at least one compound of formula I and the preferences described above.
  • liquid-crystalline composition according to the invention can essentially either be non-polymerisable or polymerizable.
  • a polymerizable or non-polymerizable liquid-crystalline composition according to the invention is quite generally not only to be understood as a composition whose one or more components already possess per se (in the temperature range of interest) liquid-crystalline properties, but rather is also to be understood as such a composition, the first by mixing the ingredients or only by admixing the compounds of the invention has liquid crystalline behavior (eg, lyotropic systems). Furthermore, the compounds of the formula I according to the invention and their preferred embodiments may themselves already have liquid-crystalline behavior, but they need not necessarily possess this property.
  • a non-polymerizable composition according to the invention is in particular a composition which under normal polymerization conditions is not capable of forming self-supporting polymerization or condensation products.
  • This composition can be prepared, for example, by mixing suitable, commercially available liquid-crystalline materials, as used, for example, for active LC layers in display technology, with one or more of the compounds of the formula I according to the invention or their preferred embodiments. If it is the latter are compounds containing one or two reactive radicals Z 1 and Z 2, so these are present in the inventive compositions in such a concentration that these TION or to generate corresponding tightly crosslinked self-supporting polymerization condensation products insufficiently is.
  • a polymerizable composition according to the invention is in particular a composition in which at least one of the components is capable of forming polymerization or condensation products under customary polymerization conditions and which is polymerizable as such and can be polymerized or condensed to form self-supporting products.
  • This composition can be readily prepared by mixing suitable materials with one or more of the compounds of the present invention, which materials themselves may be polymerizable or nonpolymerizable, liquid crystalline, or even liquid crystalline.
  • Suitable polymerisable, liquid-crystalline materials are compounds which are described, for example, in WO publications 95/22586 A1, 95/24454 A1, 95/24455 A1, 96/04351 A1, 96/24647 A1, 97/00600 A2, 97/34862 A1, 98/47979 A1 and 2006/120220 A1, as well as the documents EP 1 134 270 A1 and DE 198 35 730 A1 and essentially correspond to the schematic structure PYAYMYAYP, wherein the variables P, Y and A have similar meanings as the variables Z 1 and Z 2 , Y 1 , Y 2 , Y 3 and A 1 and A 2 in formula I, M denotes a mesogenic unit and the linking group Y linked to the mesogenic moiety M is represented by the group -O-COO- in Formula I of the present application is substantiated.
  • the reactive compounds which are listed in DE 100 25 782 A1 as constituent B) of the liquid-crystalline compositions described therein can be added to the liquid-crystalline composition according to the invention as further monomers. These usually cost-effective compounds themselves usually show no liquid-crystalline behavior, but their admixture opens up the
  • compositions according to the invention Possibility to reduce the proportion of costly components in the composition according to the invention without noticeable their liquid-crystalline behavior influence.
  • properties of the composition such as degree of crosslinking, viscosity, elasticity, etc., can be adjusted with the aid of such reactive monomers.
  • suitable reactive monomers is readily accomplished by those skilled in the art, optionally after preliminary testing. It should be noted here that such reactive compounds can also act as (auxiliary) compounds in the sense discussed above.
  • a chiral nematic or cholesteric composition according to the invention is obtained, which possesses special optical properties, such as, for example, angle-dependent color effects, reflection in the IR or UV wavelength range of the spectral range, etc.
  • the liquid-crystalline composition according to the invention may contain further additives.
  • oligomers or polymers which in particular in the form of a film, i. a self-supporting layer of uniform thickness can be obtained.
  • This film can be located on a substrate which is such that by suitable measures an easy detachment and transfer to another substrate for permanent whereabouts is possible.
  • Such a film is useful, for example, in the field of film coating and laminating.
  • Such films - adapted in their properties to the appropriate purpose - in various areas.
  • they can be used in optical information display devices.
  • Such devices include video or overhead projectors, electrophoretic displays, traffic displays, LCDs for use in computer monitors, televisions, screens in printers or kitchen appliances, and billboards, lights, and billboards, as well as mobile screens such as mobile phones. Screens in cell phones, laptops, digital cameras, vehicles, and destination displays on buses and trains. You can in these devices in a variety of
  • substrates can be printed or coated by means of the polymerizable liquid-crystalline composition according to the invention by applying this composition to the substrate and then polymerizing.
  • substrates are also consumer electronics, such as music cassettes (MCs), SVHS and VHS cassettes, mini-discs (MDs), compact discs (CDs), digital versatile discs (DVDs) and the corresponding playback and / or or recorders, televisions, radios, telephones / cell phones, computer equipment, etc., and leisure, sports, household and play goods, such as bicycles, children's vehicles, skis, snowboards and surfboards, inline skaters and Roll and ice skates and household appliances.
  • substrates include, for example, writing utensils and spectacle frames.
  • substrates are also very different films which are used in optical or electro-optical components or in their manufacture.
  • Such films consist for example of polyvinyl alcohol (PVA), triacetyl cellulose (TAC), polyimide (PI), polyvinyl cinnamate (PVC) or polyolefins, such as polynorbornene, and may, for example, (broadband) polarizers, light-guiding elements for backlighting in LCDs (so-called “ light guides "), films for the distribution of light (so-called” BEFs “, ie brightness enhancement films) and films for the production of polarized light in LCDs (so-called” DBEFs ", ie” dual-brightness enhancement films ").
  • Other substrates in this context can also be certain assemblies of the LCDs, such as glass or polymer discs, which optionally still have a transparent conductive coating, for example, indium tin oxide (ITO) possess.
  • ITO indium tin oxide
  • Light guides or BEFs can be produced, for example, by coating a suitable substrate using a polymerizable, chiral nematic composition according to the invention and its subsequent polymerization.
  • the coating process can be repeated more or less frequently with compositions of the same or different composition according to the invention in order to produce corresponding optical components, such as retardation films, (broadband) polarizers and optical filters. This makes it possible to produce a correspondingly more compact design of the optical components in LCDs.
  • Another object of the present invention is the use of the liquid-crystalline composition of the invention or the oligomer or polymer of the invention for the production of optical components.
  • LCDs and their components such as (broadband) polarizers, optical filters, delay films (so-called “retardation films”) and BEFs call.
  • the liquid-crystalline composition according to the invention can also be used as a disperse liquid-crystalline phase in so-called “polymer-dispersed liquid crystals" (“PDLCs").
  • PDLCs polymer-dispersed liquid crystals
  • Such PDLCs may in principle have either an isotropic polymer matrix and both a macroscopic-isotropic and anisotropic disperse liquid-crystalline phase or an anisotropic polymer matrix and both a macroscopic isotropic and anisotropic disperse liquid crystalline phase, the macroscopic isotropic phase being from the statistical distribution of microscopic anisotropic domains results.
  • the preparation of such PDLCs is based on a (generally optically anisotropic) polymer film in which the liquid-crystalline phase is in the form of very fine inclusions, usually in the micrometer or submicron size range, uniformly dispersed.
  • a polymer film in which the liquid-crystalline phase is in the form of very fine inclusions, usually in the micrometer or submicron size range, uniformly dispersed.
  • an anisotropic optical behavior is imposed on both the polymer matrix and the dispersed phase.
  • the anisotropic state of the dispersed phase can be freezed by polymerization, thus achieving, for example, significantly better temperature (change) resistance.
  • the polymer matrix used here is usually polyvinyl alcohol.
  • a polymerizable chiral nematic composition according to the invention can also be used, for example, for the production of optical components, as described in US Pat. No. 5,235,443 and US Pat. No. 5,050,966.
  • the polymerizable, liquid-crystalline composition according to the invention or the oligomers or polymers optionally obtainable therefrom can be used for the production of heat-insulating coatings comprising one or more cholesteric layers which are above 750 nm in the infrared wavelength range, in particular in the wavelength range from 751 nm to about 2000 nm at least 40%, in particular at least 45% of the incident radiation reflect.
  • liquid-crystalline composition according to the invention especially with regard to thermal insulation coatings, reference should also be made to document WO 99/19267 A1.
  • the liquid-crystalline composition according to the invention can furthermore also be used as a liquid-crystalline colorant or for the preparation of liquid-crystalline colorants. Use as a colorant is possible if the composition already possesses color by itself. This color may be based on interference effects of the present chiral nematic phase and / or on the absorption effects of dyes and / or pigments.
  • the composition irrespective of whether it has or does not have color, can also be used to prepare colorants.
  • the production of liquid-crystalline colorants and their use for printing or coating substrates reference is made by analogy to the document WO 96/02597 A2.
  • composition according to the invention can furthermore be used in the preparation of dispersions and emulsions which are preferably based on water.
  • dispersions and emulsions which are preferably based on water.
  • composition according to the invention can also find use in the production of pigments.
  • the preparation of such pigments is known and described for example in detail in document WO 99/1 1733 A1.
  • pigments which are pre-adjusted in shape and size can also be produced using printing techniques or with the aid of nets in the interstices of which the polymerizable composition is located.
  • These pigments may be single-layered or multi-layered.
  • the latter pigments can usually only be produced if coating processes are used in which successive layers are produced one above the other and finally subjected to mechanical comminution.
  • liquid-crystalline composition according to the invention as a liquid-crystalline colorant or for the preparation of liquid-crystalline colorants, in the preparation of dispersions and emulsions and in the preparation of pigments, use is preferably made of a polymerizable composition.
  • Compound (3) was prepared analogously to compound (1). However, instead of 4-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid was used.
  • the reaction solution was heated again to 65 0 C and filtered through silica gel.
  • the filtrate was mixed with 4 g of activated charcoal, refluxed for one hour and filtered while hot.
  • the filtrate was concentrated, precipitated with 200 ml of water and stirred overnight.
  • the product was filtered off with suction and, after drying overnight in vacuo, 5.7 g (26%) of the desired compound were obtained.
  • Nutschgut was dissolved at 65 0 C in 1000 ml of methanol and filtered through silica gel. The filtrate was treated with 4 g of activated carbon, refluxed for two hours and filtered while hot. Precipitation precipitated from the filtrate. This was filtered off with suction and after drying under reduced pressure gave 54.5 g (36%) of the desired compound.
  • HTP values were determined by the method of Cano on the basis of mixtures of the compounds according to the invention with the nematic compound of the formula shown below:
  • Nutschgut was dissolved in 100 mL of methylene chloride, treated with 10 g of silica gel and filtered after a short stirring. The filtrate was concentrated by half, precipitated with 150 ml of n-hexane and stirred overnight. The product was filtered off with suction and dried overnight at 40 ° C. in vacuo. 3.4 g (14%) of the desired compounds were obtained.
  • N, N-dimethylcyclohexylamine and 90 mL of methylene chloride are added dropwise.
  • the mixture was stirred for 30 min at 0-5 0 C and overnight at room temperature. Then, the reaction mixture was stirred at 40 ° C. for 6.5 hours.
  • the solution was washed first with 200 mL of acidic water (pH 3) and then with 200 mL of water. The organic phase was dried over sodium sulfate and filtered. The filtrate crystallized by addition of 300 mL of methanol. It was stirred overnight and vacuumed the next morning. For cleaning was the filter cake was dissolved in methylene chloride, filtered through silica gel and then concentrated.
  • Step 1
  • reaction was washed first with 125 ml of slightly acidic water (pH 5) and then with 125 ml of water.
  • the organic phase was dried over sodium sulfate and filtered through silica gel. The filtrate was transferred to a flask and cooled again to 0-5 0 C.
  • Step 1
  • reaction mixture was stirred at 40 ° C. for 5.5 hours. After cooling to room temperature, the solution was washed first with 200 mL of acidic water (pH 3) and then with 200 mL of water. The organic phase was dried over sodium sulfate, filtered and largely concentrated. The remaining solution was precipitated with 200 ml of methanol / water 1: 1, filtered off with suction and dried. This gave 1, 3 g (26%) of the desired compound.

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  • Crystallography & Structural Chemistry (AREA)
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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
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EP09765748A 2008-06-17 2009-06-04 Polymerisierbare chirale verbindungen, enthaltend 2,6-naphthyl- und isomannit-einheiten, und deren verwendung als chirale dotierstoffe Withdrawn EP2297165A1 (de)

Priority Applications (1)

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EP09765748A EP2297165A1 (de) 2008-06-17 2009-06-04 Polymerisierbare chirale verbindungen, enthaltend 2,6-naphthyl- und isomannit-einheiten, und deren verwendung als chirale dotierstoffe

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08158439 2008-06-17
EP09765748A EP2297165A1 (de) 2008-06-17 2009-06-04 Polymerisierbare chirale verbindungen, enthaltend 2,6-naphthyl- und isomannit-einheiten, und deren verwendung als chirale dotierstoffe
PCT/EP2009/056857 WO2009153168A1 (de) 2008-06-17 2009-06-04 Polymerisierbare chirale verbindungen, enthaltend 2,6-naphthyl- und isomannit-einheiten, und deren verwendung als chirale dotierstoffe

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JP2011525482A (ja) 2011-09-22
US20110092718A1 (en) 2011-04-21
US8608977B2 (en) 2013-12-17
CN102066382A (zh) 2011-05-18
WO2009153168A1 (de) 2009-12-23
TW201011035A (en) 2010-03-16

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