摘要:
The invention relates to a method for producing aqueous polymer dispersions containing colorants by radical aqueous emulsion polymerisation of ethylenically unsaturated monomers in the presence of radical-forming initiators. At least a proportion of the monomers is used in the form of an oil-in-water emulsion E1 whose disperse phase contains at least one oil-soluble colorant. The inventive method is characterised in that the disperse phase of E1 is essentially made up of colorant-containing monomer droplets with a diameter
摘要:
The invention concerns mixtures of liquid-crystalline compounds containing at least two different substances of general formula (I) in which the radicals Z1, Z2, independently of one another, mean a polymerisable group, Y1, Y2, independently of one another, mean a direct bond, -O-, -COO-, -OCO- or -S-, A1, A2, independently of one another, mean a spacer, and R?1, R2 and R3¿ mean conventional substituents. The invention further concerns novel compounds of the given formula, in which at least two of the radicals Z?1, Z2, Y1, Y2, A1 or A2¿ do not correspond. The mixtures and compounds according to the invention are suitable, inter alia, as a base material for colouring effect and piezo materials, preferably in chirally doped form.
摘要:
The invention concerns mixtures of liquid-crystalline compounds containing at least two different substances of general formula (I) in which the radicals Z1, Z2, independently of one another, mean a polymerisable group, Y1, Y2, independently of one another, mean a direct bond, -O-, -COO-, -OCO- or -S-, A1, A2, independently of one another, mean a spacer, and R?1, R2 and R3¿ mean conventional substituents. The invention further concerns novel compounds of the given formula, in which at least two of the radicals Z?1, Z2, Y1, Y2, A1 or A2¿ do not correspond. The mixtures and compounds according to the invention are suitable, inter alia, as a base material for colouring effect and piezo materials, preferably in chirally doped form.
摘要:
Liquid-crystalline compounds have the general formula (I): X(-Y-A-Y-M-Y-B)n, in which X is an aromatic or aliphatic ring system; n is an integer from 2 to 6; the Y symbols represent independently from each other a direct bond, -COO-, -OCO-, -O-, -CONH- or -CON(R)-, in which R = C1 to C4 alkyl; A is a spacer; M is a mesogene group; and B is a lateral chain. These compounds are particularly suitable in displays or for producing light-reflecting layers.
摘要:
The invention relates to compositions containing at least one biodegradable polymer (A) and at least one fluorescent dye (B) and to a method for sorting composted garbage.
摘要:
Disclosed is a process for producing mixtures of liquid crystal compounds, wherein at least one of the starting components consists of a mixture of at least two compounds and this mixture is reacted, using methods that are known per se, with at least one other starting component to form a static mixture.
摘要:
The invention pertains to chiral compounds that contain at least one double or multiple bonded chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral doping agents in the production of cholesteric networks. The compounds as per the invention can be used in electro-optical displays or as chiral doping agents for nematic or cholesteric liquid crystals to produce color-reflecting layers.