Polymerizable liquid crystal material
AssigneeMerck Patent Gesellschaft mit beschraenkter Haftung
InventorsChristopher J. Dunn, Simon Greenfield, Richard Harding, Ian Victor Edward Hassall, Alison Linda May, Julian Frederick Samuel Vaughan-Spickers
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Abstract
The invention relates to a polymerizable liquid crystal material containing at least one polymerizable surface-active compound, its use for the preparation of anisotropic polymer films, and the use of the liquid crystal material and the polymer films in optical and electrooptical devices, and for decorative and security applications.
Claims44
A polymerizable liquid crystal material comprising a composition comprising at least one polymerizable mesogenic compound and at least one polymerizable surface-active compound, wherein the polymerizable surface-active compound is a polymerizable fluorocarbon surfactant that comprises one of more polymerizable groups different than an OH group.
A polymerizable liquid crystal material comprising at least one polymerizable surface active compound which is a polymerizable fluorocarbon surfactant that comprises one of more polymerizable groups different than an OH group and at least 20% by weight of one or more polymerizable monoreactive mesogenic compounds having one polymerizable group and one polar terminal group.
A polymerizable liquid crystal material comprising at least one polymerizable surface-active compound, at least one polymerizable mesogenic compound, at least 20% by weight of one or more polymerizable monoreactive mesogenic compounds having one polymerizable group and one polar terminal group and one or more chiral compounds.
A polymerizable liquid crystal material comprising
- a) 5 to 80% by weight of one to five monoreactive mesogenic compounds of formula I, each independently having a polar terminal group,
- P-(Sp-X)n-MG-R I
- wherein
- P is a polymerizable group,
- Sp is a spacer group having 1 to 25 C atoms,
- X is —O—, —S—, —CO—, —COO—, —OCO—, —CO—NH—, —NH—CO—, —CH2CH2—, —OCH2—, —CH2O—, —SCH2—, —CH2S—, —CH═CH—, —CH═CH—COO—, —OCO—CH═CH—, —C≡C—, or a single bond,
- n is 0 or 1,
- MG is a mesogenic group, and
- R is H, ON, NO2, P-(Sp-X)n—, halogen or a straight-chain or branched alkyl radical of up to 25 C atoms which is unsubstituted, mono- or polysubstituted by halogen or CN, wherein one or more non-adjacent CH2 groups are optionally and independently replaced by —O—, —S—, —NH—, —N(CH3)—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S— or —C≡C— in a manner that oxygen atoms are not linked directly to one another,
- b) 10 to 90% by weight of one to four di-reactive polymerizable mesogenic compounds of formula I,
- c) 0.1 to 15% by weight of one to three non-polymerizable chiral dopants,
- d) 0.5 to 10% by weight of a polymerization initiator, and
- e) 0.01 to 6% by weight of one or more polymerizable surface-active compounds.
A polymerizable liquid crystal material comprising
- a) 0 to 30% by weight of one to five monoreactive mesogenic compounds of formula I, each independently having a polar terminal group,
- P-(Sp-X)n-MG-R I
- wherein
- P is a polymerizable group,
- Sp is a spacer group having 1 to 25 C atoms,
- X is —O—, —S—, —CO—, —COO—, —OCO—, —CO—NH—, —NH—CO—, —CH2CH2—, —OCH2—, —CH2O—, —SCH2—, —CH2S—, —CH═CH—, —CH═CH—COO—, —OCO—CH═CH—, —C≡C—, or a single bond,
- n is 0 or 1,
- MG is a mesogenic group, and
- R is H, CN, NO2, P-(Sp-X)n—, halogen or a straight-chain or branched alkyl radical of up to 25 C atoms which is unsubstituted, mono- or polysubstituted by halogen or CN, wherein one or more non-adjacent CH2 groups are optionally and independently replaced by —O—, —S—, —NH—, —N(CH3)—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S— or —C≡C— in a manner that oxygen atoms are not linked directly to one another,
- b) 90% or more by weight of one to four di-reactive polymerizable mesogenic compounds of formula I,
- c) 0.1 to 15% by weight of one to three non-polymerizable chiral dopants,
- d) 0.5 to 10% by weight of a polymerization initiator, and
- e) 0.01 to 6% by weight of one or more polymerizable surface-active compounds.
A polymerizable liquid crystal material comprising
- a) 80% or more by weight of one to five monoreactive mesogenic compounds of formula I, each independently having a polar terminal group,
- P-(Sp-X)n-MG-R I
- wherein
- P is a polymerizable group,
- Sp is a spacer group having 1 to 25 C atoms,
- X is —O—, —S—, —CO—, —COO—, —OCO—, —CO—NH—, —NH—CO—, —CH2CH2—, —OCH2—, —CH2O—, —SCH2—, —CH2S—, —CH═CH—, —CH═CH—COO—, —OCO—CH═CH—, —C≡C—, or a single bond,
- n is 0 or 1,
- MG is a mesogenic group, and
- R is H, CN, NO2, P-(Sp-X)n—, halogen or a straight-chain or branched alkyl radical of up to 25 C atoms which is unsubstituted, mono- or polysubstituted by halogen or CN, wherein one or more non-adjacent CH2 groups are optionally and independently replaced by —O—, —S—, —NH—, —N(CH3)—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S— or —C≡C— in a manner that oxygen atoms are not linked directly to one another,
- b) 0 to 20% by weight of one to four di-reactive polymerizable mesogenic compounds of formula I,
- c) 0.1 to 15% by weight of one to three non-polymerizable chiral dopants,
- d) 0.5 to 10% by weight of a polymerization initiator, and
- e) 0.01 to 6% by weight of one or more polymerizable surface-active compounds.
A polymerizable liquid crystal material comprising at least one polymerizable surface-active compound and less than 20% by weight of a polymerizable mesogenic compound which has a non-polar terminal group, wherein the polymerizable surface-active compound is a polymerizable fluorocarbon surfactant that comprises one of more polymerizable groups different than an OH group.
A polymerizable liquid crystal material comprising at least one polymerizable surface-active compound, at least one polymerizable mesogenic compound and one or more chiral compounds, wherein the polymerizable surface-active compound is a polymerizable fluorocarbon surfactant.
Dependencies are inferred from the claim text.