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公开(公告)号：US3682911A
公开(公告)日：1972-08-08
申请号：US3682911D
申请日：1969-02-03
Applicant: STAMICARBON
Inventor： KAASENBROOD PETRUS J C , NASSAU PETRUS J M VAN
IPC: B65D39/02 , C07D251/60 , C07D55/28
CPC classification number: C07D251/60 , B65D39/02 , Y02P20/125
Abstract: An integrated process for the manufacture of melamine in combination with the manufacture of urea is disclosed, wherein the urea product from the urea synthesis unit is used as feed to the melamine synthesis unit. In the process described, the ammonia and carbon dioxide by-products from the melamine plants are processed by condensing the same to form a dilute solution of ammonium carbamate and ammonia and desorbing the resulting solution at urea synthesis pressures, to release a major part of the carbon dioxide, and passing the resulting gaseous mixture containing ammonia and carbon dioxide with only small amounts of water vapor directly to the high pressure urea synthesis unit. Procedures for suitably recovering and using the heat energy released during the various chemical reactions and evaporation steps are also described.
Abstract translation: 公开了一种用于制造三聚氰胺与尿素制造的综合方法，其中来自尿素合成单元的尿素产物用作三聚氰胺合成单元的进料。 在所描述的方法中，来自三聚氰胺植物的氨和二氧化碳副产物通过将其缩合形成氨基甲酸铵和氨的稀溶液并在尿素合成压力下解吸所得溶液，以释放主要部分的 二氧化碳，并将含有氨和二氧化碳的所得气体混合物仅用少量水蒸气直接送至高压尿素合成装置。 还描述了适当回收和使用在各种化学反应和蒸发步骤期间释放的热能的方法。
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公开(公告)号：US3658824A
公开(公告)日：1972-04-25
申请号：US3658824D
申请日：1970-03-30
Applicant: STAMICARBON
Inventor： THOMA JOZEF A , DEUMENS JOHANNES J M
IPC: C07D295/02 , C07D295/023 , C07D295/027 , C07D29/06
CPC classification number: C07D295/027 , C07D295/023
Abstract: A PROCESS FOR THE PREPARATION OF PIPERIDINE IS DESCRIBED IN WHICH 4-CYANOBUTYRALDEHYDE IS HYDROGENATED IN THE PRESENCE OF A SUITABLE CATALYST AND AMMONIA.
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公开(公告)号：US3657330A
公开(公告)日：1972-04-18
申请号：US3657330D
申请日：1970-01-07
Applicant: STAMICARBON
Inventor： GARRITSEN JOHAN W , GREGORIE JOHANNES H C M A
Abstract: A PROCESS IS DESCRIBED FOR THE PURIFICATION OF CRUDE TEREPHATHALIC ACID, CONTAMINATED WITH IMPURITIES SUCH AS PARA-TOLUIC ACID AND PARA-CARBOXY BENZALDEHYDE, WHEREIN THE CRUDE TEREPHTHALIC ACID IS DISSOLVED IN A SOLVENT MIXTURE OF WATER AND ACETONITRILE AS ELEVATED PRESSURES AND TEMPERATURES IN EXCESS OF NORMAL BOILING TEMPERATURE OF THE SOLVENT MIXTURE, AND THE SOLUTION THEREAFTER COOLED TO A LOWER TEMPERATURE TO PERMIT RECRYSTALLIZATION OF PURIFIED TEREPHTHALIC ACID FROM THE MOTHER LIQUOR.
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公开(公告)号：US3652552A
公开(公告)日：1972-03-28
申请号：US3652552D
申请日：1967-12-18
Applicant: STAMICARBON
Inventor： GARRITSEN JOHAN W , HOFMAN JOHANNES H A
IPC: C07D201/10 , C07D29/16
CPC classification number: C07D201/10
Abstract: A PROCESS FOR PRODUCING LACTAMS FROM CYCLOALKANES IS DISCLOSED. CYCLOALKANES ARE REACTED WITH NITROSYL CHLORIDE WHILE SUBJECTED TO IRRADIATION, IN THE PRESENCE OF A NITRILE WHICH DOES NOT CONTAIN ANY METHYLENE GROUPS CAPABLE OF REACTING WITH NITROSYL UNDER THE REACTION CONDITIONS. WLACTAMS ARE DIRECTLY PRODUCED BY HEATING THE REACTION PRODUCT.
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公开(公告)号：US3651023A
公开(公告)日：1972-03-21
申请号：US3651023D
申请日：1968-07-02
Applicant: STAMICARBON
Inventor： OTTENHEYM JOHANNES H , KRIMPEN PIETER C A VAN , FRANSSEN PIERRE J
CPC classification number: C08G69/02
Abstract: THERE IS PROVIDED A POLAMIDE COMPOSITION CONTAINING AT LEAST ONE ADDITVE OF LYSINE, A-AMINO-E-CAPROLACTAM, E-N-R-LYSINE (WHEREIN R STANDS FOR A BIVALENT HYDROCARBON-RADICAL), A-N-R-A-AMINO-E-CAPROLACTAM (WHEREIN R STANDS FOR A BIVALENT HYDROCARBON RADICAL), N,N'',-BIS HEXAHYDRO-AZEPIN-2-OXO-3-YL)-R (WHEREIN R STANDS FOR A DIAMINE OR A DIAMIDE) AND 1 N, 3 N, 5 N-TRI(HEXAHYDROAZEPIN-2-OXO-3-YL)-TRIAZLINE-1,3,5 AND A PROCESS FOR PRODUCING THE SAME. PREFERABLEY THE ADDITIVE IS CONTAINED IN THE COMPOSITION IN AMOUNTS OF 0.5 TO 5% BY WEIGHT OF THE POLYAMIDE.THE COMPOSTION IS USEFUL FRO SPINNING INTO FIBERS AND YARNS AND IMPROVES COLOR INTENSITY, MODULUS OF ELASTICITY AND FLAT SPOTTING.
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Patent Agency Ranking
公开(公告)号：US3647754A
公开(公告)日：1972-03-07
申请号：US3647754D
申请日：1970-03-27
Applicant: STAMICARBON
Inventor： BONNEMA JENTJE , PIJPERS EMANUEL M J
CPC classification number: C08G2/06
Abstract: A PROCESS FOR THE PREPARATION OF MACROMOLECULAR FORMALDEHYDE POLYMERS IS DESCRIBED WHEREIN FORMALDEHYDE CONTAINING SUBSTANTIAL AMOUNTS OF WATER, E.G., FROM 0.5% UP TO 7% OR EVEN MORE, MAY BE POLYMERIZED. THE CATALYSTS USED FOR THIS PROCESS ARE CERTAIN TITANIUM COMPOUNDS DISSOLVED IN AN INERT LIQUID MEDIUM, SUCH AS TITANIC ESTERS OF ALCOHOLS, CYCLO ALCOHOLS, PHENOLS AND THIOPHENOLS; TITANIUM SALTS OF ORGANIC SALTS AND OTHER ORGANIC TITANIUM COMPOUNDS.
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公开(公告)号：US3617303A
公开(公告)日：1971-11-02
申请号：US3617303D
申请日：1968-12-06
Applicant: STAMICARBON NV HEELEN
Inventor： GEURTS GERARDUS A
CPC classification number: A23L33/175 , A23L7/101
Abstract: There is provided an improvement in the process for increasing the amino acid content of cereals by contacting with an aqueous solution of at least one amino acid to cause absorption of the amino acid into the cereal. The improvement resides in first increasing the water content of the cereal prior to contacting the cereal with the solution of at least one amino acid, whereby an increased absorption of the amino acid is obtained.
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公开(公告)号：US3600154A
公开(公告)日：1971-08-17
申请号：US3600154D
申请日：1969-02-28
Applicant: STAMICARBON
Inventor： SLOT WILLEM , LOGEMANN JOHAN D
IPC: C05B11/06
Abstract: AN IMPROVED PROCESS FOR THE CONTINUOUS PREPARATION OF A NITROPHOSPHATE FERTILIZER WHEREIN PHOSPHATE ROCK IS DECOMPOSED IN AN AQUEOUS SOLUTION CONTAINING SUFFICIENT NITRIC ACID TO DISSOLVE THE PHOSPHATE ROCK, SULPHURIC ACID IS THEN ADDED TO THE SOLUTION IN A SUFFICIENT AMOUNT TO PRECIPITATE GYPSUM WITH THE SIMULTANEOUS REFORMATION OF NITRIC ACID, ADDITIONAL PHOSPHATE ROCK IS THEN ADDED TO THE SOLUTION AND DISSOLVED BY THE REFORMED NITRIC ACID, AMMONIUM SULPHATE IS THEN ADDED TO
THE SOLUTION TO REACT WITH THE DISSOLVED CALCIUM IONS OBTAINED IN DISSOLVING THE ADDITIONAL PHOSPHATE ROCK, THEREBY PRECIPITATING ADDITIONAL GYPSUM, THE PRECIPITATED GYPSUM IS THEN SEPARATED FROM THE SOLUTION, AND THE GYPSUM-FREE SOLUTION IS THEN NEUTRALIZED WITH AMMONIA AND EVAPORATED TO DRYNESS TO FORM A SOLID FERTILIZER COMPOSITION.-
公开(公告)号：US3572415A
公开(公告)日：1971-03-23
申请号：US3572415D
申请日：1969-01-13
Applicant: STAMICARBON
Inventor： VONCKEN GERARD L M
Abstract: A FILM EVAPORATOR IS DISCLOSED IN WHICH AT LEAST, THE TOPMOST OF THE BAFFLES FOR SEPARATING ENTRAINED LIQUID PARTICLES FROM THE VAPOR DISHCARGE IS PROVIDED WITH A GUIDE SURFACE LEADING TO A TROUGH. DRAIN PIPES LEADING OBLIQUELY DOWNWARDLY FROM THE TROUGH CONVEY THE COLLECTED LIQUID TO AN AREA OF SUFFICIENTLY LOW GAS VELOCITY AS TO ALLOW THE
LIQUID TO FLOW TO THE CONDENSATE DISCHARGE PORT. SOME OF THE BAFFLES ARE LOCATED ON A CONCENTRIC INSERT HAVING AN UPPER END LOCATED ABOVE THE BASE OF THE VAPOR DISCHARGE LINE. AS A FURTHER MEAUSRE, A DAM IS THEN PROVIDED IN THE BASE OF THE VAPOR DISCHARGE LINE.-
公开(公告)号：US3549719A
公开(公告)日：1970-12-22
申请号：US3549719D
申请日：1969-06-13
Applicant: STAMICARBON
Inventor： DUYVERMAN COENRAAD J , RADEMAKERS PETER
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