摘要:
2-Phenyl-5-benzimidazol-2'-yl-furanes of the formula ##STR1## in which R.sub.1 is a sulphonic acid group or an ester or amide thereof, a carboxylic acid group or an ester or amide thereof, a cyano group, a trifluoromethyl group or an alkyl- or arylsulphonyl group, R.sub.2 is alkyl having 1 to 8 carbon atoms, alkenyl having 3 or 4 carbon atoms, cyclohexyl, hydroxyalkyl having 2 to 4 carbon atoms, alkoxyalkyl having a total of 3 to 6 carbon atoms, carboxyalkyl having 2 to 6 carbon atoms, carbalkoxyalkyl having a total of 3 to 6 carbon atoms, cyanoalkyl having 2 to 4 carbon atoms, carbamoylalkyl which has 1 to 6 carbon atoms in the alkyl moiety and is unsubstituted or substituted on the nitrogen atom by 1 or 2 alkyl having 1 to 3 carbon atoms, benzyl which is unsubstituted or substituted by chlorine, methyl or methoxy, dialkylaminoalkyl having a total of 3 to 7 carbon atoms or phenethyl and, if n is the number 0, also hydrogen, R.sub.3 is hydrogen, alkyl having 1 to 6 carbon atoms, hydroxyalkyl having 2 or 3 carbon atoms, cyanoalkyl having 2 to 4 carbon atoms, carboxyalkyl having 2 or 3 carbon atoms, carbamoylmethyl which is unsubstituted or substituted on the nitrogen atom by 1 or 2 alkyl having 1 to 3 carbon atoms, alkoxycarbonylalkyl having a total of 3 to 6 carbon atoms, alkenyl having 3 or 4 carbon atoms or benzyl which is unsubstituted or substituted by chlorine or methyl, R.sub.4 is hydrogen, chlorine, bromine, fluorine, carboxyl carbalkoxy having a total of 2 to 5 carbon atoms, alkoxyalkoxycarbonyl having a total of 4 to 6 carbon atoms, benzyloxycarbonyl, cyano, sulpho, alkylsulphonyl having 1 to 4 carbon atoms, carbamoyl or sulphamoyl which are unsubstituted or substituted by 1 or 2 alkyl groups having 1 to 4 carbon atoms, or sulphonic acid phenyl ester or trifluoromethyl, R.sub.5 is hydrogen, chlorine or methyl, R.sub.6 is hydrogen or chlorine, n is the number 0 or 1 and A.sup..crclbar. is a colorless anion equivalent to the cation of the fluorescent brightener, their preparation as well as their use for optically brightening organic materials are disclosed.
摘要:
The invention provides a new process for the manufacture of aromatic compounds which at least once contain a benzene ring of an aromatic carbocyclic ring system bonded by an ethylene double bond in conjugation with a further aromatic ring system, i.e. contain the stilbene skeleton or stilbene analogon as central structural element, as well as certain classes of new compounds of this type. The process is characterized by the reaction of a Schiff base of an aromatic aldehyde with an aromatic carbocyclic six-membered ring compound which contains one to four methyl groups bonded to ring carbon atoms of a benzene ring, which furthermore contains aromatic rings which are exclusively six-membered carbocyclic rings, and wherein those benzene rings whose methyl groups are to be caused to react are free of other substituents which contain atoms wich are replaceable by alkali metal. The reaction is carried out in the presence of (a) a strongly basic alkali compound and (b) an N-dialkyl-acylamide as solvent. The compounds obtainable according to this process show a marked fluorescence emission and therefore are suitable for all purposes where fluorescence properties are used, as for instance optical brighteners, scintillators fluorescence dyes, etc.
摘要:
A novel process for the production of compounds of the formulaA--CH.dbd.CH--D--CH.dbd.CH--A.sub.1 (I)wherein A and A.sub.1, independently of one another, denote phenyl, naphthyl, diphenylyl, 2-phenyl-1,2,3-triazol-4-yl or pyridyl, it being possible for A and A.sub.1 to contain non-chromophoric substituents, and D denotes 4,4'-diphenylylene, 1,5- or 2,6-naphthylene, or a 9,10-dihydrophenanthrene or dibenzofurane radical which is bonded to the vinylene groups in the 2,7-position, which comprises reacting in a first stage a compound of the formulaX--CH.sub.2 --D--CH.sub.2--X (II)wherein X denotes halogen, especially chlorine or bromine, hydroxyl or a group ##STR1## wherein X.sub.1 represents an aliphatic cycloaliphatic or aromatic hydrocarbon radical, especially alkyl having 1 to 6 carbon atoms, or phenyl, and D has the indicated meaning, in a strongly acid medium, in a molar ratio of at least 1:2, with an organic sulphide containing 5 to 8 ring members, of the formula ##STR2## wherein B represents a polymethylene group of 4 to 7 methylene groups and wherein one of these methylene groups can be replaced by a hetero-atom and wherein these methylene groups can also contain alkyl groups with 1 to 4 carbon atoms as substituents, to give a sulphonium salt of the formula ##STR3## wherein M represents the anion of the strong acid used and n denotes the numbers 1 or 2; reacting, in a second stage, the resulting sulphonium salt with 2 mols of an aldehyde of the formulaA--CHO (V)orA.sub.1 --CHO (VI)or their mixture, in the presence of strong bases, in a strongly polar, protic or aprotic, water-miscible solvent to give a diepoxide of the formula ##STR4## and subjecting in a 3rd stage, the diepoxide of the formula (VII), thus obtained, to a reduction according to processes which are in themselves known for the reduction of epoxides with elimination of the epoxide oxygen and formation of vinylene groups.
摘要:
A method of, and apparatus for, loading transporting trolleys with full cans and supplying full cans to spinning machines fed with fiber sliver, wherein the empty cans are placed upon transporting trolleys interconnected to form a transporting trolley train and transported from a spinning machine fed with fiber sliver to a can loading device. The cans are transported from their transporting trolley first to a can take-up station, then are engaged by a revolving can transporting device which transports each of the cans to a spinning preparatory machine delivering a fiber sliver and where each of the cans are filled with the fiber sliver. After filling the cans are transported via a can output station back onto a transporting trolley of the same train and such transporting trolley train is then brought back to the spinning machine fed with fiber sliver.
摘要:
An ampoule holder for receiving an ampoule that has a closure element with a radial projection, the ampoule holder including an ampoule seat and a securing member operably coupled to the ampoule seat, wherein the radial projection of the closure element can be arranged between the ampoule seat and securing member.
摘要:
A unique system and method that facilitates trust-based interaction within an online social marketplace is provided. The system and method involve allowing users of the marketplace to selectively interact with one another according to a trustworthiness factor. Users can be deemed trustworthy depending on which email groups they belong to with respect to one another. For example, sellers can limit who can view their listings and when based on trust levels associated with their social groups, communities, or networks. Notifications of new or modified listings can also be sent to potentially interested users based on the users' trust levels. A ratings system can be employed as well to facilitate boosting or diminishing a user's or group's trust level. The social marketplace can include such activities as a listing service to buy, sell, or give items to others, dating and other personal listings, and job searching.
摘要:
The claimed subject matter provides a system and/or a method that facilitates ensuring reliability in an online transaction. An interface component can receive data related to at least one user involved with an online transaction associated with commerce. An evaluation component can generate a reputation associated with the user based on at least one online activity and can employ a pre-determined handshake period for at least one of a feedback on the online transaction or an acknowledgement of a portion of the online transaction.
摘要:
Catalyzers for purification of exhaust gases are disclosed including a housing, an inlet for supplying the exhaust gases to the housing, a first catalyzer within the housing adjacent to the inlet and a second catalyzer within the housing downstream of the first catalyzer, the first catalyzer having a smaller cross-sectional area than the second catalyzer, and the inlet being angled with respect to the longitudinal axis of the first catalyzer.
摘要:
Novel dibenzofuranylbiphenyl compounds of the formula (I) ##STR1## which are unsubstituted or are monosubstituted or polysubstituted by radicals R=hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, phenoxy and benzyloxy and in which R.sub.3 is C.sub.1 -C.sub.4 alkyl, halogen or phenyl and M is hydrogen and/or one equivalent of a non-chromophoric cation and the preparation and use thereof for fluorescent whitening are described.
摘要:
Liquid detergents containing, as the fluorescent whitener, 2,2'-dichloro-5,5'-disulfodistyrylbiphenyl, process for the preparation and use of the liquid detergent for washing and pre-treating textile fabrics; these are liquid detergents which are stable on storage, do not sediment, are stable to bleaching systems and do not form spots in the course of pre-treatment.