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公开(公告)号:DE2917064A1
公开(公告)日:1980-11-13
申请号:DE2917064
申请日:1979-04-27
Applicant: BASF AG
Inventor: DIEM HANS DIPL CHEM DR , DUDECK CHRISTIAN DIPL CHEM DR , MERKEL DIETER
Abstract: Formaldehyde evolution from aminoplast foams is reduced by treating the finished foam surface with a non-volatile HCHO-bonding agent (I). (I) is pref. an aq. urea soln. or a salt of a S acid esp. an aq. mixt. of urea, NH3, ammonium sulphite and a water contg. or drawing agent. In an example, a urea-HCHO soln. prepd. from urea-HCHO resin soln. urea and water, was beaten with Na dibutylnaphthalene sulphonate, resorcinol, phosphoric acid and water were beaten into to form a foam which was moulded into test pieces.
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公开(公告)号:DE2809421A1
公开(公告)日:1979-09-06
申请号:DE2809421
申请日:1978-03-04
Applicant: BASF AG
Inventor: DUDECK CHRISTIAN DIPL CHEM DR , LEHMANN GUNTER ING GRAD , MEISSNER BERND DIPL CHEM DR , DIEM HANS DIPL CHEM DR , FLIEGE WERNER DIPL CHEM DR , PETRI NORBERT DIPL CHEM DR , ROSS KARL-HEINZ DIPL CHEM DR
IPC: B01J23/00 , C07B61/00 , C07C67/30 , C07C69/67 , C07C69/716
Abstract: Alkyl pyruvates are prepared by oxidizing alkyl lactates in the presence of a silver catalyst of a defined particle size, at from 450 DEG to 700 DEG C. The products are starting materials for the preparation of drugs, synthetic resins and plastics.
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公开(公告)号:DE3125874A1
公开(公告)日:1983-01-20
申请号:DE3125874
申请日:1981-07-01
Applicant: BASF AG
Inventor: DIEM HANS DIPL CHEM DR , FRITSCH ROBERT , LEHNERT HEINZ ING GRAD , MATTHIAS GUENTHER DIPL CHEM DR , SCHATZ HERMANN , WITTMANN OTTO ING GRAD
IPC: C08G14/06 , C08G14/12 , C09J161/34 , C08G14/10 , C09J3/16
Abstract: Aqueous solutions of adhesive resins made from formaldehyde, urea, melamine and phenol are obtained if phenol, formaldehyde and up to 0.35 mol of an alkaline metal bisulphite per mol of phenol are reacted to give a phenol-formaldehyde condensate and formaldehyde and urea in a molar ratio of 2.5 or less are reacted to give a urea-formaldehyde condensate, and the reaction products are themselves reacted with melamine and formaldehyde.
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公开(公告)号:DE3113955A1
公开(公告)日:1982-01-14
申请号:DE3113955
申请日:1981-04-07
Applicant: BASF AG
Inventor: DIEM HANS DIPL CHEM DR , DUDECK CHRISTIAN DIPL CHEM DR , KRAUS FRIEDRICH DIPL CHEM DR , SCHUCHART PETER DIPL ING DR
Abstract: In the preparation of amino resin powders by spray-drying corresponding solutions, a considerable saving in energy is achieved if the drying air is partly circulated without drying.
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公开(公告)号:DE2815752A1
公开(公告)日:1979-10-25
申请号:DE2815752
申请日:1978-04-12
Applicant: BASF AG
Inventor: DUDECK CHRISTIAN DIPL CHEM DR , LEHMANN GUNTER ING GRAD , PETRI NORBERT DIPL CHEM DR , DIEM HANS DIPL CHEM DR , FLIEGE WERNER DIPL CHEM DR , MEISSNER BERND DIPL CHEM DR , ROSS KARL-HEINZ DIPL CHEM DR , MUEHLTHALER WOLFGANG ING GRAD
Abstract: The prepn. of aliphatic hydroxy carbonyl cpds. (I), which have been etherified with aliphatic gps., by catalytic oxidation of the corresp. etherified hydroxyalcohols (II) in the presence of metal catalysts comprises oxidising (II) at 450-700 degrees C in the presence of a catalyst with total layer thickness 5-100 mm. The catalyst comprises (a) 3 or more layers of silver crystals, in which one part of the silver crystal layer contains 30-85 wt.% of the catalyst with particles of size 1-2.5 mm., one part contains 2-30 wt.% of the catalyst with particle size 0.75-1 mm., and the rest of the silver crystal layers contain 8-50 wt.% of the catalyst with particle size 0.2-0.75 mm., together with one or more layers of copper crystals, contg. 1-40 wt.% of the catalyst with particle size 0.2-0.75 mm.; or (b) silver crystal layers as above, together with one or more layers of copper crystals contg. 0.5-40 wt.% of the catalyst with particle size 0.2-75 mm. and one or more layers of catalyst particles with 70-99 wt.% Cu, 0.9-20 wt.% tin and 0.1-10 wt.% P, (based on the wt. of the particles of these elements) so that the layers of catalyst particles contain 0.5-10 wt.% catalyst with particle size 0.2-0.75 mm. or (c) only silver crystal layers as in (a), except that the part of the layers with particle size 0.2-0.75 mm. contain 13.68 wt.% of the catalyst. (I) are starting materials in the prepn. of dyestuffs, pesticides, plastics and perfumes. (I) are obtd. in better yield, space-time yield and purity than in previous processes, and the life of the catalyst is longer (30 days, in the case of methoxyacetaldehyde).
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公开(公告)号:DE2758124A1
公开(公告)日:1979-07-05
申请号:DE2758124
申请日:1977-12-24
Applicant: BASF AG
Inventor: DUDECK CHRISTIAN DIPL CHEM DR , LEHMANN GUNTER ING GRAD , PETRI NORBERT DIPL CHEM DR , DIEM HANS DIPL CHEM DR , FLIEGE WERNER DIPL CHEM DR , MEISSNER BERND DIPL CHEM DR , ROSS KARL-HEINZ DIPL CHEM DR , MUEHLTHALER WOLFGANG ING GRAD
Abstract: Prodn. of aliphatic hydroxycarbonyl cpds. (I) etherified by aliphatic gps. comprises oxidn. of etherified hydroxyalcohols (II) at 450-700 degrees C over a catalyst bed of total thickness 5-100 mm. This bed has >=3 layers of Ag crystals: (a) a layer of particle size 1-2.5 mm (30-85 wt.% of the catalyst); (b) a layer of 0.75-1 mm (2-30 wt.%); and (c) a layer of 0.2-0.75 mm (8-50 wt.%); and >=1 layer of Cu crystals of particle size 0.2-0.75 mm making up 1-40 wt.% of the catalyst. Opt. there is also >=1 layer of particles of size 0.2-0.75 mm comprising 70-99 wt.% Cu, 0.9-20 wt.% Sn and 0.1-10 wt.% P, making up 0.5-10 wt.% of the catalyst.
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公开(公告)号:DE2451990A1
公开(公告)日:1976-05-13
申请号:DE2451990
申请日:1974-11-02
Applicant: BASF AG
Inventor: SEBASTIAN ROBERT , AICHER ALBRECHT , HAAS HANS DIPL CHEM DR , DIEM HANS DIPL CHEM DR
IPC: C07C47/055 , C07C45/00 , C07C45/38 , C07C47/058 , C07C67/00 , C07C239/00 , C07C273/02 , C07C275/02 , C08G12/00 , C08G12/12 , C07C47/04 , C07C45/16 , C07C45/24
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公开(公告)号:DE2323758A1
公开(公告)日:1974-11-28
申请号:DE2323758
申请日:1973-05-11
Applicant: BASF AG
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公开(公告)号:DE3145328A1
公开(公告)日:1983-06-01
申请号:DE3145328
申请日:1981-11-14
Applicant: BASF AG
Inventor: DIEM HANS DIPL CHEM DR , FRITSCH ROBERT , LEHNERT HEINZ ING GRAD , MATTHIAS GUENTHER DIPL CHEM DR , SCHATZ HERMANN , WITTMANN OTTO DIPL ING
IPC: C08G14/06 , C08G14/12 , C09J161/34 , C08L61/34 , C09J3/16
Abstract: A further embodiment of the process for the preparation of aqueous solutions of products of the condensation of formaldehyde and at least urea, melamine and phenol, in which the molar proportion of phenol, based on the sum of melamine and urea, is from 0.05 to 0.25, and the molar ratio between urea and melamine is from 0.2:1 to 1:0.2, at a total molar ratio between formaldehyde and the sum of melamine, urea and phenol of from about 1.1 to 2, the condensation products being usable as adhesive resins, in which, in each case in a manner known per se, phenol, formaldehyde and up to 0.35 mol of an alkali metal bisulphite per mol of phenol are reacted to form a phenol-formaldehyde condensate, and formaldehyde and urea are reacted in a molar ratio of 2.5 or less to form a urea-formaldehyde condensate, and the reaction products are themselves reacted with melamine and formaldehyde in such a ratio that the molar ratios between melamine, urea, phenol and formaldehyde mentioned at the outset are either produced directly or after a further reaction with up to 75% of the total intended amount of urea, in accordance with Patent Application P 3125874.3, characterised in that an effective amount of phenol of less than 0.05, based on the sum of melamine and urea, is proposed.
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公开(公告)号:DE2951957A1
公开(公告)日:1981-07-09
申请号:DE2951957
申请日:1979-12-22
Applicant: BASF AG
Inventor: SCHATZ HERMANN , DUDECK CHRISTIAN DIPL CHEM DR , DIEM HANS DIPL CHEM DR , MAYER JOHANN DIPL CHEM DR , SCHMIDT-HELLERAU CHRISTOF
IPC: C08G14/10 , C08L61/34 , C09J161/34
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