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公开(公告)号：DE59910045D1
公开(公告)日：2004-09-02
申请号：DE59910045
申请日：1999-08-03
Applicant: BASF AG
Inventor： FRANK GABRIELE , BIASTOCH DR , KUMMER DR
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.
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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
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.
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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
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).
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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
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.
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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
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.
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Patent Agency Ranking
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
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).
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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
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.
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8.发明专利
公开(公告)号：ES2255745T3
公开(公告)日：2006-07-01
申请号：ES99114453
申请日：1999-07-23
Applicant: BASF AG
Inventor： FRANK GABRIELE , BIASTOCH RALF DR
Abstract: Microcápsulas de resina de melamina-formaldehído útiles para sistemas de grabación sensibles a la presión. Las microcápsulas se preparan añadiendo urea a una dispersión de melamina-formaldehído antes de endurecer. Las microcápsulas (I) se producen por condensación de resinas de melamina-formaldehído y/o sus métilesteres en agua, donde se dispersa el material formador d cápsula insoluble en agua, en presencia de un coloide protector aniónico con un pH de entre 3 y 6.5 y entre 20 y 50ºC seguido dl endurecimiento de las pared de la cápsula entre 50 y 100ºC. Antes del endurecimiento se añade entre 10 y 200 % en peso de urea (w-r-t resina de melanina-formaldehído) opcionalmente enlazada con puentes de etileno o puentes de propileno. Se incluye una reivindicación independiente para un sistema de grabación sensible a la presión que contiene las microcápsulas.
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公开(公告)号：DE59913070D1
公开(公告)日：2006-04-13
申请号：DE59913070
申请日：1999-07-23
Applicant: BASF AG
Inventor： FRANK GABRIELE , BIASTOCH DR
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).
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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
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.
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