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公开(公告)号：ES2179252T3
公开(公告)日：2003-01-16
申请号：ES97115933
申请日：1997-09-12
Applicant: BASF AG
Inventor： WEYER HANS-JURGEN DR , ECK BERND , BAUMANN DIETER , MALTRY BERNHARD
IPC: B01J2/00 , B01J2/02 , B01J2/26 , C07C67/52 , C07C69/675
Abstract: The production of neopentyl glycolhydroxypivalate (NPG-HP) granules (I) comprises pouring molten NPG-HP onto a cooling surface so that the melt solidifies, using a melt containing 3 wt.% NPG-HP crystals. Also claimed are: (i) NPG-HP granules (I) obtained by the above process, especially: (a) spherical granules with an average diameter of 3-16 mm; or (b) granules with an average diameter of 20-100 mm and at least two parallel faces 15-30 mm apart; and (ii) the use of a granulating system for the above process, with a precooler (2) for the NPG-HP melt, a precrystalliser (3), and a drop-forming system (4) or a flat spreader to bring the melt onto a cooling belt (6), with a crusher if a flat spreader is used.
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公开(公告)号：DE59707630D1
公开(公告)日：2002-08-08
申请号：DE59707630
申请日：1997-09-12
Applicant: BASF AG
Inventor： WEYER DR , ECK BERND , BAUMANN DIETER , MALTRY BERNHARD
IPC: B01J2/00 , B01J2/02 , B01J2/26 , C07C67/52 , C07C69/675
Abstract: The production of neopentyl glycolhydroxypivalate (NPG-HP) granules (I) comprises pouring molten NPG-HP onto a cooling surface so that the melt solidifies, using a melt containing 3 wt.% NPG-HP crystals. Also claimed are: (i) NPG-HP granules (I) obtained by the above process, especially: (a) spherical granules with an average diameter of 3-16 mm; or (b) granules with an average diameter of 20-100 mm and at least two parallel faces 15-30 mm apart; and (ii) the use of a granulating system for the above process, with a precooler (2) for the NPG-HP melt, a precrystalliser (3), and a drop-forming system (4) or a flat spreader to bring the melt onto a cooling belt (6), with a crusher if a flat spreader is used.
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公开(公告)号：ES2127600T3
公开(公告)日：1999-04-16
申请号：ES96115818
申请日：1996-10-02
Applicant: BASF AG
Inventor： SCHMIDT-RADDE MARTIN DR , HELFERT HERBERT DR , ECK BERND , MALTRY BERNHARD
IPC: C07B63/00 , C07D207/26 , C07D207/267
Abstract: Purification of N-vinylpyrrolidone (I) comprises crystallisation in a crystalliser. The process includes pre-coating the surfaces of the crystalliser, on which crystals are to be grown during the crystallisation, with a seed layer of (I).
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公开(公告)号：DE19536859A1
公开(公告)日：1997-04-03
申请号：DE19536859
申请日：1995-10-02
Applicant: BASF AG
Inventor： SCHMIDT-RADDE MARTIN DR , HELFERT HERBERT DR , ECK BERND , MALTRY BERNHARD
IPC: C07B63/00 , C07D207/26 , C07D207/267
Abstract: Purification of N-vinylpyrrolidone (I) comprises crystallisation in a crystalliser. The process includes pre-coating the surfaces of the crystalliser, on which crystals are to be grown during the crystallisation, with a seed layer of (I).
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Patent Agency Ranking
公开(公告)号：AT219962T
公开(公告)日：2002-07-15
申请号：AT97115933
申请日：1997-09-12
Applicant: BASF AG
Inventor： WEYER HANS-JUERGEN DR , ECK BERND , BAUMANN DIETER , MALTRY BERNHARD
IPC: B01J2/00 , B01J2/02 , B01J2/26 , C07C67/52 , C07C69/675
Abstract: The production of neopentyl glycolhydroxypivalate (NPG-HP) granules (I) comprises pouring molten NPG-HP onto a cooling surface so that the melt solidifies, using a melt containing 3 wt.% NPG-HP crystals. Also claimed are: (i) NPG-HP granules (I) obtained by the above process, especially: (a) spherical granules with an average diameter of 3-16 mm; or (b) granules with an average diameter of 20-100 mm and at least two parallel faces 15-30 mm apart; and (ii) the use of a granulating system for the above process, with a precooler (2) for the NPG-HP melt, a precrystalliser (3), and a drop-forming system (4) or a flat spreader to bring the melt onto a cooling belt (6), with a crusher if a flat spreader is used.
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公开(公告)号：DE59802024D1
公开(公告)日：2001-12-13
申请号：DE59802024
申请日：1998-06-05
Applicant: BASF AG
Inventor： MELDER DR , BAUMANN DIETER , MALTRY BERNHARD
IPC: C07C69/675 , B01D9/00 , B01J2/26 , C07C67/52
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公开(公告)号：DE19933289A1
公开(公告)日：2001-01-18
申请号：DE19933289
申请日：1999-07-15
Applicant: BASF AG
Inventor： BRUNNER MELANIE , LORENZ RODOLF ERICH , MALTRY BERNHARD , HEILEK JOERG
IPC: B01J2/02 , B01J2/26 , C07C29/17 , C07C29/42 , C07C29/76 , C07C29/78 , C07C31/125 , C07C31/20 , C07C31/22 , C07C33/044
Abstract: The invention relates to a method for producing a granulate in tablet form, from a melt. Said method comprises the following steps: (i) preparing a melt; (ii) producing drops from said prepared melt; (iii) depositing said drops on a cool surface; and (iv) hardening said deposited drops to form a granulate. The invention is characterized in that the melt contains an alcohol and has a melting temperature of 30 DEG C and above.
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公开(公告)号：DE19724461A1
公开(公告)日：1998-12-17
申请号：DE19724461
申请日：1997-06-10
Applicant: BASF AG
Inventor： MELDER JOHANN-PETER DR , BAUMANN DIETER , MALTRY BERNHARD
IPC: C07C69/675 , B01D9/00 , B01J2/26 , C07C67/52
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