-
公开(公告)号：CA1169091A
公开(公告)日：1984-06-12
申请号：CA391084
申请日：1981-11-27
Applicant: HOECHST AG
Inventor： KLOSE WERNER , AUEL THEODOR
Abstract: PROCESS FOR THE MANUFACTURE OF 1-AMINOALKANE-1,1 DIPHOSPHONIC ACIDS The invention relates to a process for making 1-amino-alkane-1,1-diphosphonic acids of the general formula (I) (I) in which R stands for an aliphatic hydrocarbon radical having from 1 to 12 carbon atoms. To this end, the invention provides: a) for tetraphosphorus hexoxlde to be reacted with at least one compound of the general formula (II) (II) in which R has the meaning given above and X stands for an-ONH4 or NH2-radical, in inert gaq atmosphere at elevated bemperature, the molar ratio of tetraphosphorus hexoxide to the compound of general formuls (II): being about 1 to 2-6; and b) for 1-aminoalkane-1,1-diphosphonic acid to be crystalli zed from the reaction mixture.
-
公开(公告)号：DD206380A5
公开(公告)日：1984-01-25
申请号：DD23568081
申请日：1981-12-11
Applicant: HOECHST AG
Inventor： KLOSE WERNER , AUEL THEODOR
Abstract: The invention relates to a process for making 1-aminoalkane-1,1-diphosphonic acids of the general formula (I): (I) in which R stands for an aliphatic hydrocarbon radical having from 1 to 12 carbon atoms. To this end, the invention provides: (a) for tetraphosphorus hexoxide to be reacted with at least one compound of the general formula (II) (II) in which R has the meaning given above and X stands for an -ONH4 or NH2-radical, in inert gas atmosphere at elevated temperature, the molar ratio of tetraphosphorus hexoxide to the compound of general formula (II) being about 1 to 2-6; and (b) for 1-aminoalkane-1,1-diphosphonic acid to be crystallized from the reaction mixture.
-
公开(公告)号：CA1156667A
公开(公告)日：1983-11-08
申请号：CA372042
申请日：1981-03-02
Applicant: HOECHST AG
Inventor： KRAUSE WERNER , GROSSE JUERGEN , KLOSE WERNER
Abstract: PROCESS FOR REACTING ALCOHOLS AND/OR PHENOLS WITH PHOSPHORUS PENTASULFIDE The invention relates to a process wherein an alcohol and/or phenol is reacted with phosphorus pentasulfide in the presence of a catalyst which is selected from a) phosphonium salts of the general formula: I or b) ammonium salts of the general formula: II or c) phosphine oxides of the general formula: III or d) phosphine sulfides of the general formula: IV or e) phosphinic acid derivatives of the general formula: In formulae I through V, the substituents R1, R2, R3 and R4 each stand for identical or different alkyl-, aryl-, alkaryl- or aralkyl- groups having from 1 to 22 carbon atoms. A stands for an inorganic or organic acid, and X and Y, respectively, stand for both oxygen and sulfur, and M stands for a monovalent metal or oxygen.
-
公开(公告)号：CA1116537A
公开(公告)日：1982-01-19
申请号：CA311558
申请日：1978-09-19
Applicant: HOECHST AG
Inventor： JOEDDEN KLAUS , HEYMER GERO , KLOSE WERNER
Abstract: of the disclosure Phosphane and/or methylphosphane are recovered from a waster gas mixture containing these phosphanes in admixture with hydrogen, nitrogen and/or non-polar lower hydrocarbons. More specifically, the waste gas mixture is contacted at -20 to +30.degree.C with a zeolite having a pore size of 5 x 10-8 to 15 x 10-8cm. The phosphanes are separated from the remainder of the waste gas mixture by absorbing them on the zeolite until it is saturated therewith. Next, the zeolite is heated to 180 to 230.degree.C and the desorbing phosphanes are collected.
-
公开(公告)号：CA1102523A
公开(公告)日：1981-06-09
申请号：CA334657
申请日：1979-08-29
Applicant: HOECHST AG
Inventor： ELSNER GEORG , KLOSE WERNER , MAY CHRISTIAN , HEYMER GERO
IPC: C01B25/06
Abstract: CONTINUOUS PRODUCTION OF PHOSPHANE The invention relates to the continuous production of phosphane. To-chis end, elemental phosphorus is reacted with an aqueous alkali metal hydroxide solution and at least one alcohol, the reactants being used in admixture with 0.01 to 2 weight% of an alcohol, the percentage being based on the alcohol.
-
Patent Agency Ranking
公开(公告)号：CA970394A
公开(公告)日：1975-07-01
申请号：CA154345
申请日：1972-10-20
Applicant: HOECHST AG
Inventor： STAENDEKE HORST F , KLOSE WERNER
Abstract: 1356892 Dialkyl phosphine oxides KNAPSACK AG 17 Oct 1972 [12 Nov 1971] 47815/72 Heading C2P Compounds of formula RR 1 P(O)H where R and R 1 are C 1 -C 3 alkyl, are prepared by oxidizing a hydrohalic acid solution of a dialkyl phosphine with an oxidant having an oxidizing power greater than that of atmospheric oxygen, the oxidant being added substantially in the stoichiometric proportions necessary to effect the oxidation. The oxidation may be carried out at temperatures between 0 and 100‹ C. The dialkyl phosphine solution may have a concentration between 1 and 50 weight per cent and may be prepared by diluting a concentrated solution of dialkyl phosphine in concentrated hydrohalic acid with water or a solvent miscible with water and substantially inert with respect to the components of the solution. The dialkyl phosphine solution may contain between 1 and 40 weight per cent of acid. The hydrohalic acid is preferably hydrochloric acid and the oxidant is preferably chlorine or aqueous hydrogen peroxide.
-
公开(公告)号：DK166086B
公开(公告)日：1993-03-08
申请号：DK126281
申请日：1981-03-20
Applicant: HOECHST AG
Inventor： KRAUSE WERNER , GROSSE JUERGEN , KLOSE WERNER
Abstract: The invention relates to a process wherein an alcohol and/or phenol is reacted with phosphorus pentasulfide in the presence of a catalyst which is selected from (a) phosphonium salts of the general formula: I (b) ammonium salts of the general formula: II (c) phosphine oxides of the general formula: III (d) phosphine sulfides of the general formula: IV (e) phosphinic acid derivatives of the general formula: V In formulae I through V, the substituents R1, R2, R3 and R4 each stand for identical or different alkyl-, aryl-, alkaryl- or aralkyl- groups having from 1 to 22 carbon atoms. A stands for an inorganic or organic acid, and X and Y, respectively, stand for both oxygen and sulfur, and M stands for a monovalent metal or oxygen.
-
公开(公告)号：DD283632A5
公开(公告)日：1990-10-17
申请号：DD32595489
申请日：1989-02-22
Applicant: HOECHST AG
Inventor： KLOSE WERNER , KLEMP HELMUT
Abstract: 1-Hydroxy- omega -(alkyl- or arylphosphinico)alkane-1,1-diphosphonic acids of the general formula I and the salts of these acids of the general formula II where in these formulae R denotes an alkyl radical having 1 to 6 C atoms, a cycloalkyl radical having 5 to 7 C atoms or an aryl radical having 6 to 10 C atoms, R denotes a straight-chain or branched alkylene radical having 1 to 6 C atoms and A denotes an equivalent of a monovalent cation of an inorganic or organic base. Processes for the preparation of these novel compounds are additionally described.
-
公开(公告)号：DD130129A5
公开(公告)日：1978-03-08
申请号：DD19896477
申请日：1977-05-17
Applicant: HOECHST AG
Inventor： STAENDEKE HORST , DANY FRANZ-JOSEF , KANDLER JOACHIM , KLOSE WERNER
IPC: C01B25/00 , C07F9/09 , C01B25/023
Abstract: 1518665 Stabilized red phosphorus HOECHST AG 2 May 1977 [19 May 1976] 18259/77 Heading C1A [Also in Division C2] Stabilized phosphorus comprises a homogeneous blend of red phosphorus particles of size at most 2 mm with the Al, Mg, Ca or Zn salt of the orthophosphoric acid mono- or di-ester of lauryl alcohol tetraethyleneglycol ether, stearyl alcohol, or phenol hexaethyleneglycol ether or a mixture thereof, the salt being present in amount 0À25-5% by weight. The composition may be prepared by heating a suspension of the P and the ester(s) in water to 60‹-95‹ and adding an aqueous solution of a water-soluble salt of Al, Mg, Ca or Zn, filtering and drying.
-
公开(公告)号：CA969189A
公开(公告)日：1975-06-10
申请号：CA116275
申请日：1971-06-22
Applicant: HOECHST AG
Inventor： KLOSE WERNER
Abstract: An error notification system (7) operated independently of a connected computer (7) receives signals indicating an error condition in operation of the computer (7), matches the signal with a prerecorded message (94), and dials phone numbers (95) from a priority list of responsible parties. When a call is answered, the notification system announces the message (103), informing the answering agent of the error condition, and requests a response requiring the person (98). If the requested response is not given, the system dials the phone number next in priority (101), and so on, until a person answers and provides the human response. The system is applied to networked computers, such as file servers, and in one embodiment, the answering party can initiate corrective action (108).
-
-
-
-
-
-
-
-
-
Search Results
26
records
(took 0.023 seconds)
