中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

189 records (took 0.027 seconds)

    Production of derivatives of 1, 4-bis-(styryl)-benzene
    104.
    发明专利
    Production of derivatives of 1, 4-bis-(styryl)-benzene 未知

    公开(公告)号：GB920988A

    公开(公告)日：1963-03-13

    申请号：GB2780160

    申请日：1960-08-11

    Applicant: BASF AG

    Inventor： STILZ WALTER ,  POMMER HORST ,  KOENIG KARL-HEINZ

    IPC: C07C17/26 ,  C07C25/24 ,  C07D317/50 ,  C07F9/40

    Abstract: Compounds of the 1,4-bis-(styryl)-benzene series are prepared by reacting a benzylphosphonic acid which is not substituted in paraposition by a free or esterified carboxylic acid group and whose carbon atom attached to the phosphorus atom bears at least one hydrogen atom, or an ester of the same, with a 1,4-diacylbenzene (acyl includes -CHO) in the presence of a proton acceptor. An inert solvent, especially a polar solvent, may be used. The phosphonic compound may be of formula where R, R1, R2 and R3 may be hydrogen, aliphatic groups, especially alkyl, halogen, free, esterified or etherified hydroxy, sulphonic acid, sulphonic acid amide, nitrile, carboxylic amide, or, except for R, free or esterified carboxylic groups. R and R1, R and R2 or R and R3 may also be members of 5- or 6-membered cyclic diethers annellated with the benzene ring through the oxygen atoms, the carbon atoms in the ether rings being substituted if desired. R4, R5 and R6 may be hydrogen or aliphatic, especially alkyl, groups; R5 and R6 may also be aryl or may be linked in a ring with the phosphorus. The benzene ring may form part of a naphthalene system. Carboxylic amide groups may be N-substituted, e.g. by C1-6 alkyl or by alkylene completing a ring with the nitrogen. The diacylbenzenes may be of formula where R7, R8 and R9 may be hydrogen, or aliphatic or araliphatic, especially alkyl, groups. R7 and R8 may also be halogen, free, etherified or esterified hydroxy, or sulphonic acid groups. The bis-(styryl)-benzenes may be of use as optical bleaches for synthetic and natural macromolecular substances, and as light protective agents, stabilizers, pesticides and dyes. Examples describe the preparation of: 1,4-bis-(31,41-methylenedioxystyryl)benzene; 1,4-bis-(m- and p-cyanostyryl)benzenes; 1,4-bis - (p - methoxystyryl)benzene; 1,4-bis-(31,41-dichlorostyryl)benzene; 1,4-bis(p-chlorostyryl) benzene; 1,4-bis(21,41-dichlorostyryl)benzene; and 1,4-distyryl-2,5-dichlorobenzene. The diethyl esters of the following benzylphosphonic acids are prepared as starting materials from triethyl phosphite and appropriate benzyl halides: 3,4-methylenedioxybenzyl; m- and p-cyanobenzyl; p-methoxy-benzyl; 3,4-dichlorobenzyl; p-chlorobenzyl; and 2,4-dichlorobenzyl phosphonic acids.

    Optically brightened macromolecular organic substances
    105.
    发明专利
    Optically brightened macromolecular organic substances 未知

    公开(公告)号：GB913735A

    公开(公告)日：1962-12-28

    申请号：GB2195360

    申请日：1960-06-23

    Applicant: BASF AG

    Inventor： STILZ WALTER ,  POMMER HORST ,  WOLFF ERIKA ,  FESSMANN HEINZ

    IPC: C07C63/66 ,  C08G63/54 ,  C08K3/32 ,  C08K5/00 ,  C08K5/12

    Abstract: A macromolecular organic substance contains for the homogeneous optical brightening thereof at least one compound of the 1,4-bis-styryl benzene series having the general formula in which R1 and R11 denote carboxyl groups carboxylic acid ester or amide groups or nitrile groups, R2 and R3 denote hydrogen, halogens, alkyl groups, aralkyl groups or alkoxy groups, and in which R1 and R11 may be identical or different and symmetrically or unsymmetrically attached to the benzene rings, and R2 and R3 may be identical or different. Specified macromolecular substances are polyamides, polyesters, aminoplasts, rubbers, regenerated cellulose, polymers and copolymers of styrene, vinyl chloride, vinylidene chloride, butadiene, acrylamide and acrylonitrile, polyethylene, polypropylene, polyisobutylene and polyformaldehyde. In the Examples:- (1) a mixture of caprolactam and hexamethylene diammonium adipate is polymerized in the presence of 1,4-bis-(p-carbomethoxystyryl)-benzene; (2) caprolactam is polymerized in the presence of titanium dioxide and 1,4-bis-(p-cyanostyryl)-benzene; (3) hexamethylene diammonium adipate is polymerized in the presence of 1,4-bis-(m-carbomethoxystyryl) benzene; (4) sebacic acid and hexamethylene diamine are polymerized in the presence of 1,4-bis-(p-carbomethoxystyryl)-benzene; (5) polycaprolactam is mixed with 1,4-bis-(p-cyanostyryl)-benzene and ditertiary-butyl-p-cresol; (6) polypropylene is mixed with 1,4-bis-(p-cyanostyryl)-benzene; (7) dimethyl terephthalate and ethylene glycol are polymerized in the presence of zinc acetate, antimony trioxide and 1,4-bis-(p-carbomethoxystyryl)-benzene; (8) polypropylene is mixed with titanium dioxide and 1,4-bis-(p-carbomethoxystyryl)-benzene; (9) dimethyl terephthalate and ethylene glycol are polymerized in the presence of antimony trioxide, zinc acetate and 1,4-bis-(p-cyanostyryl)-benzene and (10) polyformaldehyde impregnated with a solution of a polyamide made from hexamethylene diammonium adipate, p-diamino-dicyclohexylmethane adipate, caprolactam and 2,21-methylene-bis-(4-ethyl-6-t-butyl phenol) is mixed with (a) 1,4-bis-(41-carbomethoxystyryl)-benzene, (b) bis-(41-cyanostyryl)-benzene. Specification 813,539 is referred toALSO:1,4-bis-styrylbenzenes of the formula: wherein R1 and R11 are identical or different and may be carboxyl groups, esterified carboxyl groups, nitrile groups, or carboxylic amide groups are made by reacting a m or p-benzyl halide derivative of the formula with a triarylphosphine to form triaryl-cyano benzylphosphonium chloride, 2 mols of which are reacted in the presence of an alkaline condensing agent with one mol of a terephthaldehyde of the general formula where R2 and R3 which may be the same or different are hydrogen, halogens, alkyl groups, aralkyl groups or alkoxy groups. Examples describe the preparation of 1,4-bis-(p-carbomethoxystyryl)benzene; 1,4-bis-(p-cyanostyryl) benzene; 1,4-bis(m-cyanostyryl)benzene; and 1,4 - bis(m-carbomethoxystyryl)benzene. Specification 813,539 is referred to.

Patent Agency Ranking