摘要:
Chiral compounds of the formula I ##STR1## where R.sup.1 is hydrogen or --Y--Z--Y.sup.1, R.sup.2 is ##STR2## and X is hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl or OR.sup.1, where Y is a direct bond, CO or C.sub.2 - to C.sub.8 -alkylene in which nonadjacent carbon atoms may be replaced by O, CO, COO or OCO, Z is a group containing one or more saturated or unsaturated carbocyclic or heterocyclic rings, Y.sup.1 is C.sub.1 - to C.sub.15 -alkyl, C.sub.2 - to C.sub.15 -alkenyl, C.sub.1 - to C.sub.15 -alkoxy, C.sub.2 - to C.sub.15 -alkenyloxy, C.sub.1 - to C.sub.15 -alkanoyloxy or C.sub.3 - to C.sub.15 -alkenoyloxy, it being possible for nonadjacent carbon atoms in these radicals to be replaced by oxygen, OCO or COO, and n is 0, 1 or 2.
摘要:
Described herein are chiral compounds of the formula I ##STR1## where R.sup.1 is hydrogen or --Y--Z--Y.sup.1, R.sup.2 is ##STR2## and X is hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl or OR.sup.1, where Y is a direct bond, CO or C.sub.2 - to C.sub.8 -alkylene in which nonadjacent carbon atoms may be replaced by O, CO, COO or OCO, Z is a group containing one or more saturated or unsaturated carbocyclic or heterocyclic rings, Y.sup.1 is C.sub.1 - to C.sub.15 -alkyl, C.sub.2 - to C.sub.15 -alkenyl, C.sub.1 - to C.sub.15 -alkoxy, C.sub.2 - to C.sub.15 -alkenyloxy, C.sub.1 - to C.sub.15 -alkanoyloxy or C.sub.3 - to C.sub.15 -alkenoyloxy, it being possible for nonadjacent carbon atoms in these radicals to be replaced by oxygen, OCO or COO, and n is 0, 1 or 2.
摘要:
The invention relates to chiral compounds of the general formula A--Y--(M--Y).sub.n --B--(Y--M).sub.n --Y--A where B is a radical of the formula ##STR1## and where the radicals A independently of one another are C.sub.1 - to C.sub.20 -alkyl which may be substituted by fluorine, chlorine, bromine or cyano and may be interrupted by O, S, NH, NCH.sub.3, COO or OCO, X are carbon or boron, Y independently of one another are a chemical bond, O, S, NH, N(CH.sub.3), COO or OCO and M independently of one another are a mesogenic group and n independently of one another are 0 or 1 with the proviso that one n is other than 0. The compounds according to the invention are suitable as dopes in liquid-crystalline media.
摘要:
The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparation of cholesteric networks. The novel compounds are suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals in order to produce layers which reflect in colors.
摘要:
The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparation of cholesteric networks.The novel compounds are suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals in order to produce layers which reflect in colors.
摘要:
Colorant preparations contain the following ingredients: a) at least one dispersed, substantially water insoluble dye, b) water, c) at least one dispersant d) a compound of the general formula I where R1, R2 are independently selected from hydrogen, (CH2—CH2—O)nH or (CH(CH3)—CH2—O)n—H, where n is an integer from 1 to 8; (CH2—CH2—O)a—(CH(CH3)—CH2—O)b—(CH2—CH2—O)c—(CH(CH3)—CH2—O)d—H, where a, b, c, d are each an integer from 0 to 7 and a+b+c+d=9. R3 is selected from straight-chain C2-C10-alkyl, C6-C14 aryl, identicallly or differently substituted by hydrogen or C1-C8-alkyl CH2—O—R4 where R4 is selected from C1-C10-alkyl.
摘要:
A process for treating a substrate comprises utilizing at least one aqueous formulation comprising (A) at least one binder obtainable by copolymerization of ethylene and (meth)acrylic acid and optionally one or more further comonomers, (B) at least one reaction product of at least one carbodiimide (C) with at least one diol, triol or polyol (D), or (C) at least one carbodiimide and optionally at least one diol, triol or polyol.
摘要:
Aqueous pretreatment liquor for preparing a textile substrate for inkjet printing, comprising (A) one or more polycationic compounds, (B) one or more thickeners, (C) optionally customary additives, (C) water. Preferred polycationic compounds (A) are polymers or copolymers of diallyldialkylammonium monomers. Preferred thickeners are obtainable from (i) polyetherdiols, (ii) diisocyanates and (iii) compounds, R of the general formula R—OH, R—SH, R—NH2, RR NH or R—COOH, where R is a hydrophobic aliphatic or aromatic radical of at least 4 carbon atoms and R—OH may have been alkoxylated, and also further derivatives thereof that are capable of forming a urethane, thiourethane or urea bond, or from (i) polyetherdiols with (iv) compounds of the general formula R—OH or R—COOH, where R is a hydrophobic aliphatic or aromatic radical of at least 4 carbon atoms and R—OH may have been alkoxylated, and also further derivatives thereof that are capable of forming an ether or ester bond, and or from compounds (ii) and (iii).
摘要:
Described is a process for preparing polymer-enrobed pigment particles, which comprises mixing in the presence of finely dispersed pigment particles a solution of a polymer in a first solvent with a second solvent in which the polymer is substantially insoluble. The pigment particle can be specifically modified by judicious selection of the polymer.
摘要:
Dye preparations comprising, based on the weight of the preparation, from 0.1 to 30% by weight of one or more dyes selected from the class of the anthraquinones or quinophthalones which are free of ionic groups, from 0.1 to 20% by weight of a dispersant based on an arylsulfonic acid-formaldehyde condensation product, from 10 to 90% by weight of a mono- or polyhydric alcohol and optionally water, are useful as inks in the inkjet process and also for sublimation transfer printing.