公开(公告)号：DE3731458A1

公开(公告)日：1989-03-30

申请号：DE3731458

申请日：1987-09-18

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  SENNINGER RUDOLF DR

IPC: C10L1/14 ,  C10L1/00

公开(公告)号：DE3544379A1

公开(公告)日：1987-06-19

申请号：DE3544379

申请日：1985-12-14

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH

IPC: C08L91/06 ,  B41M5/10 ,  C08L91/00 ,  C09D11/10 ,  C09D11/12 ,  C09D11/06 ,  B41M5/12 ,  B41M5/16

Abstract: Wax compositions and carbon paper compositions based on waxes, oils and colorants contain some or all of the oil in encapsulated form.

公开(公告)号：DE3507174A1

公开(公告)日：1986-09-04

申请号：DE3507174

申请日：1985-03-01

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH

IPC: G01N21/91 ,  B41M5/035 ,  C09B11/10 ,  C09B67/02 ,  D06P5/13

Abstract: The invention relates to a method for documenting the results obtained in crack tests, which is characterised in that colorants are used in the crack test, which are transferred from the workpiece to be tested onto an areal substrate brought into contact therewith.

公开(公告)号：DE3169276D1

公开(公告)日：1985-04-18

申请号：DE3169276

申请日：1981-10-08

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  SCHOEPKE HOLGER DR

IPC: B41M5/337 ,  B41M5/132 ,  B41M5/155 ,  B41M5/333 ,  C08F220/28 ,  B41M5/12

Abstract: A pressure-sensitive and heat-sensitive recording material which comprises a carrier bearing a color-developing coating consisting of (a) a finely divided solid phenolic resin with spherical particles of size where R1 is C8-C20-alkyl, phenyl or C1-C20-alkylphenyl, R2 is hydrogen or methyl, n is from 2 to 100 and m is from 0 to 50, and ( beta ) an ethylenically unsaturated copolymerizable carboxylic acid, sulfonic acid or phosphonic acid, with or without ( gamma ) an additional ethylenically unsaturated copolymerizable compound different from ( alpha ) and ( beta ), and (c) one or more aliphatic alcohols which are solid at room temperature, with or without (d) other auxiliaries. The coating, used in conjunction with micro-encapsulated color formers, gives sharp and intense copies.

公开(公告)号：DE50101906D1

公开(公告)日：2004-05-13

申请号：DE50101906

申请日：2001-01-09

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  EISERMANN HERBERT

IPC: B01J13/18 ,  B01J13/20 ,  B41M5/165 ,  C08G12/06 ,  C08G12/32 ,  C08G12/36 ,  C08G12/42 ,  C08L61/28 ,  C09D11/02 ,  C09K23/00 ,  D21H21/54

Abstract: Described is a process for preparing a dispersion of microcapsules by condensing a partially methylated melamine-formaldehyde resin having a molar ratio of melamine:formaldehyde:methanol of from 1:3.0:2.0 to 1:6.0:4.0 in water in which the essentially water-insoluble material forming the capsule core is present in dispersion in the presence of an alkali metal salt of a homopolymer or copolymer of 2-acrylamido-2-methylpropanesulfonic acid as protective colloid at a pH of from 3 to 6.5 by preforming the microcapsules at a temperature of from 20 to 50° C. and then curing the capsule wall of the preformed microcapsules at >50 to 100° C., which comprises adding from 5 to 100% by weight of melamine, based on the melamine-formaldehyde resin, in the course of curing. The microcapsule dispersions are formaldehyde-reduced and of low viscosity.

公开(公告)号：AT263623T

公开(公告)日：2004-04-15

申请号：AT01902297

申请日：2001-01-09

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  EISERMANN HERBERT

IPC: B01J13/18 ,  B01J13/20 ,  B41M5/165 ,  C08G12/06 ,  C08G12/32 ,  C08G12/36 ,  C08G12/42 ,  C08L61/28 ,  C09D11/02 ,  C09K23/00 ,  D21H21/54

Abstract: Described is a process for preparing a dispersion of microcapsules by condensing a partially methylated melamine-formaldehyde resin having a molar ratio of melamine:formaldehyde:methanol of from 1:3.0:2.0 to 1:6.0:4.0 in water in which the essentially water-insoluble material forming the capsule core is present in dispersion in the presence of an alkali metal salt of a homopolymer or copolymer of 2-acrylamido-2-methylpropanesulfonic acid as protective colloid at a pH of from 3 to 6.5 by preforming the microcapsules at a temperature of from 20 to 50° C. and then curing the capsule wall of the preformed microcapsules at >50 to 100° C., which comprises adding from 5 to 100% by weight of melamine, based on the melamine-formaldehyde resin, in the course of curing. The microcapsule dispersions are formaldehyde-reduced and of low viscosity.

公开(公告)号：DE59705154D1

公开(公告)日：2001-12-06

申请号：DE59705154

申请日：1997-08-13

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  SCHLOESSER DR ,  CZECH DR ,  KURTZ DR ,  BECK DR ,  CAMPBELL DOUG R

IPC: C09B33/10 ,  C09B67/22 ,  C09B67/26 ,  C09B67/36 ,  C09D5/08 ,  C09D7/12 ,  C09D11/00 ,  C09D11/037 ,  C09D11/16 ,  C09D11/17 ,  C09D11/32 ,  C09D17/00 ,  C09D171/02

Abstract: Aqueous dye formulations contain 0.1-15 wt.% dye, of which 90-100 wt% is an anionic disazo dye, which is a 4,4'-bis(7-amino-1-hydroxy-3-sulpho-naphthyl-2-azo)-stilbene-2,2'-disu lphonate salt of formula (I), 1-40 wt.% carbon black and 0.1-15 wt.% polyethylene glycol (PEG); in which Kat = the equivalent of a metal or ammonium ion. Also claimed are inks containing the formulation, water and optionally water-miscible organic solvent and aqueous-alcoholic varnish colours or printing inks containing the formulation, water and 1-4 carbon alkanol(s).

公开(公告)号：DE19705444A1

公开(公告)日：1997-09-18

申请号：DE19705444

申请日：1997-02-13

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  SCHLOESSER ULRIKE DR ,  CZECH ERWIN DR

IPC: B01J13/02 ,  B41M5/165 ,  C09B67/02 ,  C09B67/08 ,  C09B11/12 ,  C09B11/28 ,  C09K15/08 ,  C09K15/30

Abstract: Photostable microcapsules, with a shell and core, have a core containing 10-90 wt.% dialkyl phthalate of formula (I), 9-89 wt.% high-boiling hydrocarbon (II), 1-10 wt.% triarylmethane leuco dye and 0-10 wt.% normal light stabiliser. In the formulae, R , R = 1-20 carbon (C) alkyl, optionally substituted by phenyl or 1-4 C alkyl-phenyl; R = R , hydrogen (H) or 1-4 C alkoxy. Also claimed is pressure-sensitive carbonless copying paper coated with these microcapsules. Preferably the core contains 4-90 wt.% (I), 9-59 wt.% (II) and 1-10 wt.% leuco dye; or 10-50 wt.% (I), 40-88.9 wt.% (II), 1-10 wt.% leuco dye and 0.1-8 wt.% light stabiliser.

公开(公告)号：ID16238A

公开(公告)日：1997-09-11

申请号：ID970816

申请日：1997-03-13

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH ,  SCHLOSSER ULRIKE ,  CZECH ERWIN

IPC: B01J13/02 ,  B41M5/165 ,  C09B67/02

Abstract: PHOTOSTABLE MICROCAPSULES COMPRISING A SHELL AND A CORE HAVE A CORE COMPRISING 10-90 BY WEIGHT OF DIALKYL PHTHALATE, 9-89 BY WEIGHT OF HIGH BOILING HYDROCARBONS,1-10 BY WEIGHT OF TRIARYLMETHANE LEUCO DYES, AND 0-10BY WEIGHT OF CUSTOMARY LIGHT STABILIZERS.

公开(公告)号：DE59206829D1

公开(公告)日：1996-09-05

申请号：DE59206829

申请日：1992-01-20

Applicant: BASF AG

Inventor： HOFFMANN DIETRICH

IPC: B41M5/132 ,  B41M5/165 ,  B41M5/30 ,  B41M5/323