The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention.
Telechelic polymers containing reactive functional groups
申请人:Chung Tze-Chiang
公开号:US20050182208A1
公开(公告)日:2005-08-18
Telechelic polymers having two reactive functional groups at the same polymer chain end are disclosed. These polymers can be prepared by combining a cycloborane initiator, at least one free radical polymerizable monomer and oxygen to form a polymer segment having a borane residue at one end of the polymer segment resulting from the cycloborane initiator; and converting the borane residue to at least two functional groups to form the telechelic polymer.
Provided are antimicrobial compositions including at least one biocide covalently bound to a polyurethane. The biocide moiety may comprise triclosan, a triclosan derivative, or a quaternary ammonium salt. Further provided are methods of reducing biofilm formation or microbial growth on a surface, the method including applying to the surface an antimicrobial composition including at least one biocide covalently attached to a polyurethane.
The present invention relates to novel compounds that are particularly useful for the alignment, especially photoalignment, of slave material, especially liquid crystals for optical or electro-optical applications, such as security applications, liquid crystal devices or optical or electro-optical films.
A water-repellent film-forming composition comprising [A] a polymer selected from the group consisting of (a) a (co)polymer composed of 5 to 100 % by weight of a fluoroalkyl group-containing (meth)acrylic monomer represented by the following general formula (I)
wherein R1 represents a hydrogen atom or a methyl group, t is an integer of 1 to 11, and Rf represents -CmF2m+1 or -CnF2nH in which m is an integer of 1 to 20 and n is an integer of 1 to 20, and 0 to 95 % by weight of an unsaturated monomer copolymerizable with the fluoroalkyl group-containing (meth)acrylic monomer, (b) a copolymer composed of 0.1 to 75 % by weight of a silicon-containing polymerizable unsaturated monomer represented by the following general formula (II)
wherein R2 represents a hydrogen atom or a methyl group, and R3 represents a group of the formula
in which j is an integer of 0 or 1, k is an integer of 0 to 6, p is an integer of 1 to 5, q is an integer of 1 to 20, r is an integer of 0 to 2, s is an integer of 1 to 3, and r + s=3, and 25 to 99.9 % by weight of an unsaturated monomer copolymerizable with the silicon-containing polymerizable unsaturated monomer, and (c) a mixture of the (co)polymer (a) and the copolymer (b), and [B] a particulate material having an average particle diameter of not more than 5 micrometers.