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公开(公告)号：DK79685A
公开(公告)日：1985-08-23
申请号：DK79685
申请日：1985-02-21
Applicant: BASF AG
Inventor： GRIMMER JOHANNES , HORN HANS CHRISTOPH
IPC: C07D475/14 , C07D
Abstract: Riboflavin of the formula I I is prepared by condensation of a 4,5-dimethyl-N-(D)-ribityl-2-phenylazoaniline of the formula II II where X is H, -Cl, -NO2 or -CH3 in the o- or p-position, with barbituric acid of the formula III III in the presence of an acidic condensing agent in an inert organic solvent by an improved process in which the reaction is carried out in an aliphatic diol or triol derivative of the general formula IV (IV) where R1 is H or CH3, R2 is H or CH3- or, when n is 0, is CH3-CO-O-CH2-, R3 is CH3-, C2H5- or CH3-, R4 is CH3-CO-, or is H when R3 is CH3- or C2H5-, and n is 0 or 2, preferably 0, having a boiling point of 80 DEG -180 DEG C., or in a mixture of these as a solvent. In this process, the riboflavin is obtained in particularly pure form and in very good yields.
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公开(公告)号：DK589383A
公开(公告)日：1984-06-23
申请号：DK589383
申请日：1983-12-21
Applicant: BASF AG
Inventor： GRIMMER JOHANNES , HORN HANS CHRISTOPH
IPC: C07D475/02 , C07D475/14 , C07D
Abstract: An improved process for the purification of crude riboflavin which has been prepared by condensation of an N-(D)-ribityl-2-arylazo-4,5-dimethylaniline and barbituric acid or another N-(D)-ribityl-4,5-dimethyl-aniline derivative with a barbituric acid derivative, by dissolving the crude riboflavin in sulfuric acid or phosphoric acid which has been diluted with water and oxidizing the impurities by treating the solution with hydrogen peroxide, or by dissolving the riboflavin in dilute nitric acid at elevated temperature and then isolating the pure riboflavin by precipitation with water, wherein the mineral acid solution of the riboflavin and the oxidizing agent or the solution of the riboflavin in 20 to 70% strength by weight nitric acid is heated extremely rapidly to a temperature at which the solution clearly changes color from greenish to yellow-orange, the solution is kept at this temperature for from 1 to 50, seconds and the oxidation reaction is then interrupted by addition of water. The best results are achieved in this process if from 20 to 65% strength by weight nitric acid is used simultaneously as the acid and oxidative agent and if, after the change in color, the mineral acid solution, in particular the nitric acid solution, is passed, immediately or after prior interruption of the oxidation reaction by addition of cold water, into hot water at from 90 DEG to 100 DEG C. and the suspension thereby formed is kept at this temperature for about a further 10-30 minutes.
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公开(公告)号：CZ20033513A3
公开(公告)日：2004-05-12
申请号：CZ20033513
申请日：2002-06-13
Applicant: BASF AG
Abstract: A thermoplastic polymer mixture comprising m polymers Pn, where m is a natural number greater than 1 and n is a natural number from 1 to m, where n is a natural number from 1 to m, where each of the polymers has one or more functional groups of the structure -(R )x-C(O)-(R )y- present as repeat units in the main chain of polymer Pn where x and y, independently of one another, are 0 or 1, and x+y=1 R and R , independently of one another, are oxygen or nitrogen bonded into the main polymer chain, where in the differential distribution curve W(M) determined to DIN 55672-2 in hexafluoroisopropanol as eluent the polymer mixture has at least two maxima of the relative frequency W, and after aging of the polymer mixture at the melting point of the polymer mixture determined to ISO 11357-1 and 11357-3 for 5 minutes, the polymer mixture has in the differential distribution curve W(M) determined to DIN 55672-2 in hexafluoroisopropanol as eluent at least 2 maxima of the relative frequency W, and the position of the maxima here after aging of the polymer mixture at the melting point of the polymer mixture is within three times the recurrent standard deviation sigma(r) of MP in percentage of the value measured to DIN 55672-2, based on the position of the maxima prior to aging of the polymer mixture at the melting point of the polymer mixture.
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公开(公告)号：SK15472003A3
公开(公告)日：2004-04-06
申请号：SK15472003
申请日：2002-06-14
Applicant: BASF AG
IPC: C08L67/00 , C08L67/02 , C08L77/00 , C08L77/02 , C08L77/06 , C08L77/12 , C08L101/02 , C08L101/12
Abstract: The invention relates to a thermoplastic polymer mixture containing m, m representing a natural number higher than 1, polymers Pn wherein n represents a natural number between 1 and m, and at least one recurring functional group contained in the Pn polymer chain, said group(s) having the structure -(R )x-C(O)-(R )y- wherein x and y independently represent 0 or 1, and x+y=1, and R , R independently represent oxygen or nitrogen linked into the main polymer chain. The polymers Pn differ in terms of at least one characteristic related to molecular weight. The polymer mixture has a number average molecular weight Mn(P)1, a weight average molecular weight Mw(P)1, a Z average molecular weight Mz(P)1, a heterogeneity index Mw(P)1/Mn(P)1, and a molecular weight Mp(P)1 defined according to DIN 55672-2 in hexafluoroisopropanol as an elution agent. After maintaining the polymer mixture at the melting point of the same, defined according to ISO 11357-1 and 11357-3, for five minutes, the polymer mixture has a number average molecular weight Mn(P)2, a weight average molecular weight Mw(P)2, a Z average molecular weight Mz(P)2, a heterogeneity index Mw(P)2/Mn(P)2, and a molecular weight Mp(P)2 defined according to DIN 55672-2 in hexafluoroisopropanol as an elution agent. The values Mn(P)2, Mw(P)2, Mz(P)2, Mw(P)2/Mn(P)2 and Mp(P)2 lie within the triple replication standard deviation sigma (r) in relation to Mn(P)1, Mw(P)1, Mz(P)1, Mw(P)1/Mn(P)1 and Mp(P
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公开(公告)号：AU2002366216A1
公开(公告)日：2003-06-10
申请号：AU2002366216
申请日：2002-11-15
Applicant: BASF AG
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Patent Agency Ranking
公开(公告)号：DE10129532A1
公开(公告)日：2003-01-09
申请号：DE10129532
申请日：2001-06-21
Applicant: BASF AG
Inventor： EMRI IGOR , BERNSTORFF BERND-STEFFEN VON , RAUSCHENBERGER VOLKER , HORN HANS CHRISTOPH , KISSEL JUTTA , MOLNAR FERENC
IPC: C08G63/16 , C08G63/20 , C08G69/02 , C08G69/26 , C08G69/44 , C08L77/00 , C08G69/28 , C08J5/02 , C08K7/16 , C08L51/06 , C08L101/02
Abstract: The invention relates to a thermoplastic polymer, whose parent chain contains one or more recurrent functional groups with the structure - (R )x - C(O) - (R )y -. In said structure x and y independently of one another represent 0 or 1, whereby x + y = 1 or 2 and R and R independently of one another represent oxygen or nitrogen that are bound into the polymer parent chain. Said polymer is characterised in that the number of at least one species of reactive terminal groups (EG) in the polymer parent chain, (in relation to the sum of all said species of reactive terminal groups in the polymer parent chain), satisfies the inequation EG
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公开(公告)号：DE10129524A1
公开(公告)日：2003-01-09
申请号：DE10129524
申请日：2001-06-21
Applicant: BASF AG
Abstract: A thermoplastic polymer mixture (I) of polymers with in-chain functional groups shows a differential distribution curve W(M) (DIN 55672-2) with at least 2 peaks of relative frequency W before and after 5 minutes at the melting point of (I), the peak positions after storage being within 3 times the repeat standard deviation of Mp based on peak positions before storage. A thermoplastic polymer mixture (I) containing m polymers (Pn) with one or more functional groups in the main chain (where m = more than 1 and n = 1-m), in which the differential distribution curve W(M) determined in accordance with DIN 55672-2 using hexafluoroisopropanol as eluant shows at least 2 peaks of relative frequency W before and after storage at the melting point of (I) (determined as in ISO 11357-1 and 11357-3) for 5 minutes, the peak positions after storage being within 3 times the repeat standard deviation (sigma(r)) of Mp as a percentage of the measured value (DIN 55672-2) based on peak positions before storage. Independent claims are also included for (1) a method for the production of (I) from a mixture of solid polymers Pn by melting, mixing and solidifying the mixture; (2) a method for the production of (I) by adding part of polymers Pn in molten or solid form to another part of Pn in molten form, then mixing in the melt and solidifying; and (3) fibres, sheet materials and molded products obtained from (I).
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公开(公告)号：MX9807077A
公开(公告)日：1998-12-31
申请号：MX9807077
申请日：1998-08-31
Applicant: BASF AG
Inventor： MUELLER HANS-JOACHIM , HORN HANS CHRISTOPH , SPAHL ROLAND , RIEGER BERNHARD , ABU-SURRAH ADNAN S
Abstract: La presente invencion se refiere a los copolímeros lineales, termoplásticos, elastoméricos, de monoxido de carbono y compuestos olefínicamente insaturados que tienen una secuencia alternada de unidades repetidoras y un peso molecular promedio Mw de los copolímeros desde 80,000 a 1,200,000 siendo excluidos los copolímeros de monoxido de carbono/etileno binarios, lineales, alternados.
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公开(公告)号：PL367818A1
公开(公告)日：2005-03-07
申请号：PL36781802
申请日：2002-06-14
Applicant: BASF AG
IPC: C08L67/00 , C08L67/02 , C08L77/00 , C08L77/02 , C08L77/06 , C08L77/12 , C08L101/02 , C08L101/12
Abstract: The invention relates to a thermoplastic polymer mixture containing m, m representing a natural number higher than 1, polymers Pn wherein n represents a natural number between 1 and m, and at least one recurring functional group contained in the Pn polymer chain, said group(s) having the structure -(R )x-C(O)-(R )y- wherein x and y independently represent 0 or 1, and x+y=1, and R , R independently represent oxygen or nitrogen linked into the main polymer chain. The polymers Pn differ in terms of at least one characteristic related to molecular weight. The polymer mixture has a number average molecular weight Mn(P)1, a weight average molecular weight Mw(P)1, a Z average molecular weight Mz(P)1, a heterogeneity index Mw(P)1/Mn(P)1, and a molecular weight Mp(P)1 defined according to DIN 55672-2 in hexafluoroisopropanol as an elution agent. After maintaining the polymer mixture at the melting point of the same, defined according to ISO 11357-1 and 11357-3, for five minutes, the polymer mixture has a number average molecular weight Mn(P)2, a weight average molecular weight Mw(P)2, a Z average molecular weight Mz(P)2, a heterogeneity index Mw(P)2/Mn(P)2, and a molecular weight Mp(P)2 defined according to DIN 55672-2 in hexafluoroisopropanol as an elution agent. The values Mn(P)2, Mw(P)2, Mz(P)2, Mw(P)2/Mn(P)2 and Mp(P)2 lie within the triple replication standard deviation sigma (r) in relation to Mn(P)1, Mw(P)1, Mz(P)1, Mw(P)1/Mn(P)1 and Mp(P
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公开(公告)号：HU0401480A2
公开(公告)日：2004-10-28
申请号：HU0401480
申请日：2002-06-14
Applicant: BASF AG
Abstract: The invention relates to a thermoplastic polymer mixture containing m, m representing a natural number higher than 1, polymers Pn wherein n represents a natural number between 1 and m, and at least one recurring functional group contained in the Pn polymer chain, said group(s) having the structure -(R )x-C(O)-(R )y- wherein x and y independently represent 0 or 1, and x+y=1, and R , R independently represent oxygen or nitrogen linked into the main polymer chain. The polymers Pn differ in terms of at least one characteristic related to molecular weight. The polymer mixture has a number average molecular weight Mn(P)1, a weight average molecular weight Mw(P)1, a Z average molecular weight Mz(P)1, a heterogeneity index Mw(P)1/Mn(P)1, and a molecular weight Mp(P)1 defined according to DIN 55672-2 in hexafluoroisopropanol as an elution agent. After maintaining the polymer mixture at the melting point of the same, defined according to ISO 11357-1 and 11357-3, for five minutes, the polymer mixture has a number average molecular weight Mn(P)2, a weight average molecular weight Mw(P)2, a Z average molecular weight Mz(P)2, a heterogeneity index Mw(P)2/Mn(P)2, and a molecular weight Mp(P)2 defined according to DIN 55672-2 in hexafluoroisopropanol as an elution agent. The values Mn(P)2, Mw(P)2, Mz(P)2, Mw(P)2/Mn(P)2 and Mp(P)2 lie within the triple replication standard deviation sigma (r) in relation to Mn(P)1, Mw(P)1, Mz(P)1, Mw(P)1/Mn(P)1 and Mp(P
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