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

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

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：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

IPC: B01J13/18 ,  B01J13/20

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：DE59709000D1

公开(公告)日：2003-01-30

申请号：DE59709000

申请日：1997-10-30

Applicant: BASF AG

Inventor： BOECKH DR ,  POTTHOFF-KARL DR ,  BERTLEFF DR ,  NEUMANN DR ,  JAHNS DR ,  BIASTOCH DR ,  WEHLAGE DR

IPC: B01J13/14 ,  B01J13/18 ,  C11D3/37 ,  C11D3/39 ,  C11D17/00

Abstract: Microcapsules containing a bleaching assistant obtained by polymerisation of a monomer mixture comprising (total monomer mixture = 100 wt. %) (a) 5-100 wt. % of at least one ethylenically unsaturated carboxylic acid anhydride, (b) 0-95 wt. % of at least one monoethylenically unsaturated monomer different to monomer group (a), (c) 0-80 wt. % crosslinking monomers having at least two non-conjugated monoethylenically unsaturated groups in the molecule and (d) 0-20 wt. % water soluble monoethylenically unsaturated monomers, in the oil phase of a stable oil-in-water emulsion in the presence of radical forming polymerisation initiators, and optionally continuously or periodically increasing the temperature of the polymerisation reaction mixture during the polymerisation are new. The oil phase of the emulsion contains or consists of the bleaching assistant. Also claimed are washing and cleaning agents containing the encapsulated bleaching agent assistants for the cleaning of textile s.