公开(公告)号：DE19835114A1

公开(公告)日：2000-02-10

申请号：DE19835114

申请日：1998-08-04

Applicant: BASF AG

Inventor： FRANK GABRIELE ,  BIASTOCH RALF ,  KUMMER MATTHIAS

IPC: B01J13/18 ,  B41M5/165 ,  C08G12/42 ,  C08G14/12 ,  C08L61/28 ,  B01J13/00 ,  C09D11/10

Abstract: Microencapsulation of dispersed core material involves polycondensation of a melamine-formaldehyde (MF) resin mixture comprising: (a) an aqueous solution of a condensate of: (a1) 1 mole melamine; (a2) 2-5 mole formaldehyde; (a3) 0-0.5 mole melamine derivative; and (a4) 1-5 mole 1-3 carbon (C) alkanol; and (b) 0.01-1 mole water-soluble primary, secondary or tertiary amine or ammonia. In the production of microcapsules by polycondensation of a melamine-formaldehyde resin mixture in water, in which the capsule core material is dispersed, in the presence of an anionic protective colloid, the resin mixture comprises: (a) an aqueous solution of a condensate of: (a1) 1 mole melamine; (a2) 2-5 mole formaldehyde (HCHO); (a3) 0-0.5 mole melamine derivative capable of addition or condensation reaction with HCHO; and (a4) 1-5 mole 1-3 carbon (C) alkanol; and (b) 0.01-1 mole water-soluble primary, secondary or tertiary amine or ammonia. Independent claims are also included for: (a) microcapsules produced by this method; and (b) a melamine-HCHO resin mixture of the above composition.

公开(公告)号：BRPI0704431A

公开(公告)日：2008-07-22

申请号：BRPI0704431

申请日：2007-12-05

Applicant: BASF AG

Inventor： EISERMANN HERBERT ,  NERVO JACQUES ,  BIASTOCH RALF ,  FRANK GABRIELE

IPC: B01J13/22 ,  C09D11/10

Abstract: The present invention relates to the use of calcium salts for reducing the formaldehyde emission of microcapsule dispersions based on melamine-formaldehyde resins. The invention also relates to a process for the preparation of a dispersion of microcapsules by condensation of partly methylated melamine-formaldehyde resin in water, in which the substantially water-insoluble material forming the capsule core is dispersed, in the presence of an anionic protective colloid, and to the dispersions of microcapsules which are obtained by this process and to the use thereof for the preparation of printing inks and paper coating materials.

公开(公告)号：AT217895T

公开(公告)日：2002-06-15

申请号：AT96900923

申请日：1996-01-09

Applicant: BASF AG

Inventor： TRAUTH HUBERT ,  KROCKENBERGER JUERGEN ,  JAHNS EKKEHARD ,  BIASTOCH RALF

IPC: B01J13/14 ,  A01N25/28 ,  A61K8/11 ,  A61K8/49 ,  A61K47/08 ,  A61Q17/00 ,  A61Q17/04 ,  C07B63/04 ,  C07D311/72 ,  C07F9/09 ,  C07F9/48 ,  C08K5/00 ,  C08K5/15 ,  C08K5/1545 ,  C08K5/17 ,  C08K5/524 ,  C08K5/5393 ,  C08K9/10 ,  C08L101/00 ,  C09D7/12 ,  C09K15/06 ,  C09K15/08 ,  C09K15/32 ,  G03C1/34

Abstract: PCT No. PCT/EP96/00058 Sec. 371 Date Jul. 16, 1997 Sec. 102(e) Date Jul. 16, 1997 PCT Filed Jan. 9, 1996 PCT Pub. No. WO96/22325 PCT Pub. Date Jul. 25, 1996The stabilizer mixture comprises (a) one or more chroman derivatives of the formula I (I) where R1 is in which Z is C7- to C30-alkyl, -CH2CH2-S-(C1- to C30-alkyl) or and (b) an inert organic solvent for the chroman derivatives I from the group consisting of aliphatic, cycloaliphatic or aromatic hydrocarbons or halogenated hydrocarbons, silicone oils and vegetable and animal fats, where components (a) and (b) are in a weight ratio of from 99:1 to 1:99.

公开(公告)号：DE19833347A1

公开(公告)日：2000-01-27

申请号：DE19833347

申请日：1998-07-24

Applicant: BASF AG

Inventor： FRANK GABRIELE ,  BIASTOCH RALF

IPC: B01J13/18 ,  B01J13/02 ,  C08G12/38 ,  C08L61/28 ,  B41M5/165

Abstract: Microcapsules are prepared by addition of urea to a melamine-formaldehyde dispersion prior to hardening. Microcapsules (I) are produced by condensation of melamine-formaldehyde resins and/or their methyl ethers in water, in which the water insoluble capsule forming material is dispersed, in the presence of an anionic protective colloid at pH 3-6.5 and 20-50 degrees C followed by hardening of the capsule wall at 50-100 degrees C. Prior to the hardening 10-200 wt.% urea, (w.r.t. melamine formaldehyde resin) optionally bound with an ethylene or propylene bridges is added. An Independent claim is included for a pressure sensitive recording system that contains the microcapsules (I).

公开(公告)号：CA2278993C

公开(公告)日：2006-11-21

申请号：CA2278993

申请日：1999-07-23

Applicant: BASF AG

Inventor： FRANK GABRIELE ,  BIASTOCH RALF

IPC: B01J13/20 ,  B01J13/18 ,  B41M5/165

Abstract: A process for the preparation of microcapsules by the condensation of melamine-formaldehyde resins and/or the methyl ethers thereof in water, in which the substantially water-insoluble material forming the eo=e of the capsule is dispersed, in the presence of an anionic protective colloid at pH's of from 3 to 6.5 by the formation of the microcapsules at temperatures of from 20.degree. to 50.degree.C followed by curing of the shell of the capsules at from >50.degree. to 100.degree.C, in which, prior to curing, from 10 to 200 wt% of urea, whose amino groups are optionally linked to an ethylene or propylene bridge, based on the melamine-formaldehyde resin are added, the microcapsules produced by this process and also the use thereof in a pressure-sensitive recording system.

公开(公告)号：DE59609234D1

公开(公告)日：2002-06-27

申请号：DE59609234

申请日：1996-01-09

Applicant: BASF AG

Inventor： TRAUTH HUBERT ,  KROCKENBERGER JUERGEN ,  JAHNS EKKEHARD ,  BIASTOCH RALF

IPC: B01J13/14 ,  A01N25/28 ,  A61K8/11 ,  A61K8/49 ,  A61K47/08 ,  A61Q17/00 ,  A61Q17/04 ,  C07B63/04 ,  C07D311/72 ,  C07F9/09 ,  C07F9/48 ,  C08K5/00 ,  C08K5/15 ,  C08K5/1545 ,  C08K5/17 ,  C08K5/524 ,  C08K5/5393 ,  C08K9/10 ,  C08L101/00 ,  C09D7/12 ,  C09K15/06 ,  C09K15/08 ,  C09K15/32 ,  G03C1/34

Abstract: PCT No. PCT/EP96/00058 Sec. 371 Date Jul. 16, 1997 Sec. 102(e) Date Jul. 16, 1997 PCT Filed Jan. 9, 1996 PCT Pub. No. WO96/22325 PCT Pub. Date Jul. 25, 1996The stabilizer mixture comprises (a) one or more chroman derivatives of the formula I (I) where R1 is in which Z is C7- to C30-alkyl, -CH2CH2-S-(C1- to C30-alkyl) or and (b) an inert organic solvent for the chroman derivatives I from the group consisting of aliphatic, cycloaliphatic or aromatic hydrocarbons or halogenated hydrocarbons, silicone oils and vegetable and animal fats, where components (a) and (b) are in a weight ratio of from 99:1 to 1:99.

公开(公告)号：BR9903420A

公开(公告)日：2000-10-10

申请号：BR9903420

申请日：1999-08-04

Applicant: BASF AG

Inventor： FRANK GABRIELE ,  BIASTOCH RALF ,  KUMMER MATTHIAS

IPC: B01J13/18 ,  B41M5/165 ,  C08G12/42 ,  C08G14/12 ,  C08L61/28

Abstract: Microencapsulation of dispersed core material involves polycondensation of a melamine-formaldehyde (MF) resin mixture comprising: (a) an aqueous solution of a condensate of: (a1) 1 mole melamine; (a2) 2-5 mole formaldehyde; (a3) 0-0.5 mole melamine derivative; and (a4) 1-5 mole 1-3 carbon (C) alkanol; and (b) 0.01-1 mole water-soluble primary, secondary or tertiary amine or ammonia. In the production of microcapsules by polycondensation of a melamine-formaldehyde resin mixture in water, in which the capsule core material is dispersed, in the presence of an anionic protective colloid, the resin mixture comprises: (a) an aqueous solution of a condensate of: (a1) 1 mole melamine; (a2) 2-5 mole formaldehyde (HCHO); (a3) 0-0.5 mole melamine derivative capable of addition or condensation reaction with HCHO; and (a4) 1-5 mole 1-3 carbon (C) alkanol; and (b) 0.01-1 mole water-soluble primary, secondary or tertiary amine or ammonia. Independent claims are also included for: (a) microcapsules produced by this method; and (b) a melamine-HCHO resin mixture of the above composition.

公开(公告)号：FI108454B

公开(公告)日：2002-01-31

申请号：FI931278

申请日：1993-03-23

Applicant: BASF AG

Inventor： SCHULER BERNHARD ,  DYLLICK-BRENZINGER RAINER ,  BIASTOCH RALF

IPC: C07C51/00 ,  C07C59/08 ,  C08F2/10 ,  C08F2/16 ,  C08F220/18 ,  C08F20/38 ,  C08F26/10 ,  C08F220/10 ,  C08F220/38 ,  C08F220/58 ,  C08F226/10 ,  C08F228/02 ,  C09K23/00 ,  C08F220/04 ,  B01J13/14

Abstract: The invention relates to copolymers containing a) from 20 to 90% of 2-acrylamido-2-methylpropanesulphonic acid, sulphoethyl or sulphopropyl (meth)acrylate or vinylsulphonic acid, b) from 0 to 50% of a vinylically unsaturated acid, c) from 0 to 70% of methyl or ethyl acrylate or methacrylate, C2- to C4-hydroxyalkyl acrylate or N-vinylpyrrolidone, and d) from 0.1 to 10% of styrene or C4- to C18-alkyl acrylate or C4- to C18-alkyl methacrylate. The copolymers according to the invention are particularly suitable as protective colloids in microencapsulation.

公开(公告)号：AU4109099A

公开(公告)日：2000-02-17

申请号：AU4109099

申请日：1999-07-23

Applicant: BASF AG

Inventor： FRANK GABRIELE ,  BIASTOCH RALF

IPC: B01J13/18 ,  B01J13/02 ,  C08J9/32

Abstract: Microcapsules are prepared by addition of urea to a melamine-formaldehyde dispersion prior to hardening. Microcapsules (I) are produced by condensation of melamine-formaldehyde resins and/or their methyl ethers in water, in which the water insoluble capsule forming material is dispersed, in the presence of an anionic protective colloid at pH 3-6.5 and 20-50 degrees C followed by hardening of the capsule wall at 50-100 degrees C. Prior to the hardening 10-200 wt.% urea, (w.r.t. melamine formaldehyde resin) optionally bound with an ethylene or propylene bridges is added. An Independent claim is included for a pressure sensitive recording system that contains the microcapsules (I).

公开(公告)号：CA2278993A1

公开(公告)日：2000-01-24

申请号：CA2278993

申请日：1999-07-23

Applicant: BASF AG

Inventor： FRANK GABRIELE ,  BIASTOCH RALF

IPC: B01J13/18 ,  B01J13/20 ,  B41M5/165

Abstract: A process for the preparation of microcapsules by the condensation of melamine-formaldehyde resins and/or the methyl ethers thereof in water, in which the substantially water-insoluble material forming the core of the capsule is dispersed, in the presence of an anionic protective colloid at pH's of from 3 to 6.5 by the formation of the microcapsules at temperatures of from 20.degree. to 50.degree.C followed by curing of the shell of the capsules at from >50.degree. to 100.degree.C, in which, prior to curing, from 10 to 200 wt% of urea, whose amino groups are optionally linked to an ethylene or propylene bridge, based on the melamine-formaldehyde resin are added, the microcapsules produced by this process and also the use thereof in a pressure-sensitive recording system.