摘要:
A birefringent film comprising at least one birefringent layer of liquid crystal material forming multi domains with a splayed structure may be coated onto a reflective substrate, e.g., with an aluminium surface. The birefringent film is particularly suited for decorative, security, authentification or identification applications.
摘要:
The invention relates to a thermochromic liquid crystalline medium comprising a liquid crystalline host component and an active component, to a thermochromic ink comprising such a thermochromic liquid crystalline medium encapsulated in a light transmissive polymeric material, to the use of a thermochromic medium or ink in decorative applications like pigments, inks and paints, cosmetics, thermodiagnostic applications like medical thermography, thermometry, optical and electrooptical applications, and security applications and devices, to a security marking or device comprising a thermochromic liquid crystalline medium or thermochromic ink and to a document of value comprising such a security marking.
摘要:
The invention relates to an optically variable marking comprising a semiopaque substrate with a first surface that is covered with an optically variable layer that is for example a liquid crystal polymer layer or a layer comprising pearlescent pigments, and a second surface that is partially covered with a metal layer in the shape of a pattern, to methods of its preparation and to its use for decorative or security applications.
摘要:
An anisotropic polymer film comprising a polymeriZed chiral liquid crystal material with helically twisted structure and having areas with different helical twist sense is useful for decorative or security applications.
摘要:
An anisotropic polymer film with improved alignments prepared by coating onto a substrate with a structured surface. The polymer films thereby obtained are useful in optical and electrooptical devices for decorative and security applications.
摘要:
The invention relates to a method of preparing a birefringent marking by printing a polymerisable liquid crystal material onto at least one side of a substrate and polymerising the liquid crystal material, to a birefringent marking obtained by this method, and to the use of the birefringent marking for decorative, security, authentification and identification applications.
摘要:
The invention relates to liquid crystal flakes, to methods of their preparation and to their use as pigments for security or decorative applications or optical elements.
摘要:
The present invention relates to a barrier coating composition which is characterized in that it comprises a polymeric material and at least one inorganic flake material, its use as well as to a device, preferably a display, comprising a barrier coating layer, which is characterized in that the barrier coating layer comprises a barrier coating composition of the present invention.
摘要:
An anisotropic polymer film with improved alignments prepared by coating onto a substrate with a structured surface. The polymer films thereby obtained are useful in optical and electrooptical devices for decorative and security applications.