公开(公告)号：EP0489055B1

公开(公告)日：1994-11-02

申请号：EP90912409.1

申请日：1990-08-22

Applicant: BASF Aktiengesellschaft

Inventor： FLORY, Klaus ,  STANGE, Andreas ,  KROENER, Michael ,  SENDHOFF, Norbert

IPC: C08G12/46

CPC classification number: C08G12/46 ,  Y10T428/31949 ,  Y10T428/31964

Abstract: Cationic urea formaldehyde resins are obtained by condensation of urea and formaldehyde in a molar ratio of 1:1.5 to 3 in the presence of at least 1 mol% of polymerizates, obtained by polymerization of vinyl amine units, with Fikentscher K values of 5 to 300 in a quantity of 5 to 100 g/mol of urea in the end-product. The mixture is first a) precondensed at a pH of 8 to 14, then acidified and b) condensed at a pH of 1 to 5 until the onset of gel formation, c) 0.3 to 1.5 mol of formaldehyde per mol of urea used is added, d) subsequent condensation is carried out and e) the resin solution is then neutralized. The resins so obtained are used as additives in paper manufacture to increase the dry and wet strength of paper and reduce the loss of opacity of the whiteness of the paper.

公开(公告)号：EP1309578A1

公开(公告)日：2003-05-14

申请号：EP01976093.3

申请日：2001-08-16

Applicant: BASF AKTIENGESELLSCHAFT

Inventor： ISAK, Heinz ,  SENDHOFF, Norbert ,  SCHÜTZ, Franz ,  THERRE, Jörg ,  DRÖGEMÜLLER, Michael ,  FRANKE, Dirk ,  MUNZINGER, Manfred ,  WECK, Alexander ,  BURKART, Kirsten

IPC: C07D285/34

CPC classification number: C07D285/34

Abstract: A method for the production of a particle-containing preparation of tetrahydro-3,5-dimethyl-1,3,5-thiadiazin-2-thione, by combination of a first aqueous solution containing methylammonium-N-methyldithiocarbamate with a second solution containing formaldehyde and separation and drying of the solid formed is disclosed. The invention is characterised in that the first and second solutions are combined such that over the duration of the reaction the ratio of the concentration of dithiocarbamate functions and formaldehyde in the reaction mixture remains essentially constant over time.

公开(公告)号：EP0663031B1

公开(公告)日：1996-03-13

申请号：EP93920806.2

申请日：1993-09-23

Applicant: BASF Aktiengesellschaft

Inventor： NILZ, Claudia ,  SENDHOFF, Norbert ,  BREITSCHAFT, Walter ,  ZILLIG, Manfred ,  LORENCAK, Primoz

IPC: D21H21/28 ,  D21H17/34

CPC classification number: D21H17/34 ,  D21H21/28

Abstract: Described is a method of dyeing paper during the paper-manufacturing process by the addition of water-soluble anionic dyes and cationic polymers containing vinylamine units as fixing agents to the pulp and removing the water from the pulp to form dyed paper.

公开(公告)号：EP0489055A1

公开(公告)日：1992-06-10

申请号：EP90912409.0

申请日：1990-08-22

Applicant: BASF Aktiengesellschaft

Inventor： FLORY, Klaus ,  STANGE, Andreas ,  KROENER, Michael ,  SENDHOFF, Norbert

IPC: C08G12 ,  D21H17

CPC classification number: C08G12/46 ,  Y10T428/31949 ,  Y10T428/31964

Abstract: Les résines décrites sont obtenues par condensation de l'urée et du formaldéhyde en présence d'au moins un mole % de polymérisats obtenus par polymérisation d'unités de vinyle amine, les valeurs K selon Fikentscher étant comprises entre 5 et 300 dans une quantité de 5 à 100 g/mol d'urée dans le produit final. Le mélange est d'abord a) pré-condensé à une valeur pH comprise entre 8 et 14, ensuite acidifié; b) condensé à un pH de 1 à 5 jusqu'à amorçage de la formation d'un gel; c) additionné de 0,3 à 1,5 mole de formaldéhyde par mole d'urée; d) ensuite, la condensation est réalisée et e) la solution de résine est neutralisée. Les résines ainsi obtenues sont utilisées en tant qu'additifs pour la fabrication du papier afin d'augmenter la résistance du papier à l'état sec et humide et pour réduire tout diminution de la blancheur du papier.

公开(公告)号：EP0553135B1

公开(公告)日：1994-12-28

申请号：EP91917563.8

申请日：1991-10-04

Applicant: BASF Aktiengesellschaft

Inventor： KROENER, Michael ,  NILZ, Claudia ,  SENDHOFF, Norbert ,  STANGE, Andreas ,  DE CLERCQ, Arnold ,  RIEBELING, Ulrich

IPC: D21H17/45

CPC classification number: D21H17/45 ,  D21H21/16

Abstract: According to a paper, paperboard and cardboard internal sizing process, resin size is used, as well as cationic polymers containing polymerized vinylamine units as fixing agents for the resin size.

公开(公告)号：EP0553135A1

公开(公告)日：1993-08-04

申请号：EP91917563.0

申请日：1991-10-04

Applicant: BASF Aktiengesellschaft

Inventor： KROENER, Michael ,  NILZ, Claudia ,  SENDHOFF, Norbert ,  STANGE, Andreas ,  DE CLERCQ, Arnold ,  RIEBELING, Ulrich

IPC: D21H17 ,  D21H21

CPC classification number: D21H17/45 ,  D21H21/16

Abstract: Procédé pour le collage en pile de papier et de cartons avec utilisation de colle résinique et de produits de polymérisation cationiques dans lesquels sont polymérisées des unités d'amine de vinyle, en tant qu'agents fixateurs pour colle résinique.

公开(公告)号：EP1309578B1

公开(公告)日：2004-02-18

申请号：EP01976093.3

申请日：2001-08-16

Applicant: BASF AKTIENGESELLSCHAFT

Inventor： ISAK, Heinz ,  SENDHOFF, Norbert ,  SCHÜTZ, Franz ,  THERRE, Jörg ,  DRÖGEMÜLLER, Michael ,  FRANKE, Dirk ,  MUNZINGER, Manfred ,  WECK, Alexander ,  BURKART, Kirsten

IPC: C07D285/34

CPC classification number: C07D285/34

公开(公告)号：EP0998200B1

公开(公告)日：2002-12-18

申请号：EP98936408.8

申请日：1998-07-02

Applicant: BASF AKTIENGESELLSCHAFT

Inventor： SCHROEDER, Manfred ,  KOBER, Reiner ,  STADLER, Reinhold ,  TIDOW, Jörn ,  SENDHOFF, Norbert ,  PROBECK, Erich

IPC: A01N43/88 ,  A01N25/26

CPC classification number: A01N43/88 ,  A01N25/26 ,  A01N2300/00

公开(公告)号：EP0998200A1

公开(公告)日：2000-05-10

申请号：EP98936408.8

申请日：1998-07-02

Applicant: BASF AKTIENGESELLSCHAFT

Inventor： SCHROEDER, Manfred ,  KOBER, Reiner ,  STADLER, Reinhold ,  TIDOW, Jörn ,  SENDHOFF, Norbert ,  PROBECK, Erich

IPC: A01N43/88 ,  A01N25/26

CPC classification number: A01N43/88 ,  A01N25/26 ,  A01N2300/00

Abstract: The invention relates to plant protection products in the form of a granulate with a base consisting of the active agent tetrahydro-3,5-dimethyl-1,3,5-thadiazine-2-thione, containing an outer shell representing a proportion by weight of between 0.1 and 50 wt. % in relation to the granulate and consisting of at least 50 wt. % sulphur or sulphurous compounds.

公开(公告)号：EP0663031A1

公开(公告)日：1995-07-19

申请号：EP93920806.0

申请日：1993-09-23

Applicant: BASF Aktiengesellschaft

Inventor： NILZ, Claudia ,  SENDHOFF, Norbert ,  BREITSCHAFT, Walter ,  ZILLIG, Manfred ,  LORENCAK, Primoz

IPC: D21H17 ,  D21H21

CPC classification number: D21H17/34 ,  D21H21/28

Abstract: Described is a method of dyeing paper during the paper-manufacturing process by the addition of water-soluble anionic dyes and cationic polymers containing vinylamine units as fixing agents to the pulp and removing the water from the pulp to form dyed paper.