公开(公告)号：DE3224454A1

公开(公告)日：1984-01-05

申请号：DE3224454

申请日：1982-06-30

Applicant: BAYER AG

Inventor： DAHM MANFRED DIPL CHEM DR ,  WEIMANN NORBERT DR ,  NEHEN ULRICH DIPL CHEM DR ,  MUELLER HANNS PETER DIPL CHEM ,  JABS GERT DIPL CHEM DR

IPC: B01J13/16 ,  B41M5/165 ,  C08G18/80 ,  B01J13/02 ,  B41M5/12 ,  C08K9/10 ,  C09J3/00

Abstract: Microcapsules whose core comprises water-insoluble substances and which have a capsule wall formed by reaction of water-insoluble polyamines with water-soluble bisulphite adducts of polyisocyanates, a process for their production in which a mixture of water-insoluble substances and water-insoluble polyamines is emulsified in water or optionally in an aqueous protective colloid solution to the desired particle size, water-soluble bisulphite adducts of polyisocyanates in the form of powders or aqueous solutions are added, and the reaction is subsequently carried out at temperatures of from 1 to 140 DEG C, and their use in the production of reaction copy papers, in the production of mouldings, in the reactivation of adhesives, as toners for copying systems or as absorbent systems.

公开(公告)号：DE2707660A1

公开(公告)日：1978-08-24

申请号：DE2707660

申请日：1977-02-23

Applicant: BAYER AG

Inventor： WINKELMANN HANS-DIETER DR ,  WOLF KARL-HEINZ DR ,  OERTEL HARALD DR ,  WEIMANN NORBERT DR

IPC: C07C67/00 ,  C07C241/00 ,  C07C265/14 ,  C07C269/02 ,  C07C275/04 ,  C07C275/28 ,  C07C275/30 ,  C07C275/32 ,  C07D223/10 ,  C08G18/00 ,  C08G18/38 ,  C08G18/65 ,  C08G18/70 ,  C08G18/80 ,  C08G18/10

公开(公告)号：DE3874178D1

公开(公告)日：1992-10-08

申请号：DE3874178

申请日：1988-03-21

Applicant: BAYER AG

Inventor： WEIMANN NORBERT DR ,  DAHM MANFRED DR ,  NEHEN ULRICH DR ,  SCHAEFER WALTER DR

IPC: C09K3/00 ,  B01J19/16 ,  B01J20/26 ,  C08G18/00 ,  C08G18/08 ,  C08G18/10 ,  C08G18/32 ,  C08G18/79 ,  C08J9/28

Abstract: Core-shell microfoam beads have a shell obtd. by crosslinking a polyamine (I) and NCO-contg. carbodiimide (II) and a core (partly) filled with a polymeric NCO-contg. carbodiimide (III) or its reaction prod. with a polyamine (IV). The beads are self-supporting and hydrophilic. The shell is pref. wrinkled and contains polyurea and polyguanidine The beads have a maxdia. of 300 microns. The beads are produced by dissolving (III) in at least 20 (wt. = pts. org. solvent (pref. CHCl3), emulsifying the soln. in aq. phase, crosslinking (III) with (I), removing the solvent and drying if necessary. The beads may be charged with a suitable substance.

公开(公告)号：DE3619060A1

公开(公告)日：1987-12-10

申请号：DE3619060

申请日：1986-06-06

Applicant: BAYER AG

Inventor： WEIMANN NORBERT DR ,  GIZYCKI ULRICH VON DR ,  BONIN WULF VON DR

IPC: A61K8/11 ,  A61K8/25 ,  A61K8/85 ,  A61K8/87 ,  A61Q13/00 ,  B01J13/12 ,  B01J13/16 ,  B01J19/08 ,  C04B20/10 ,  C09C1/28 ,  C09C3/06 ,  C09C3/08 ,  C09C3/10 ,  B01J13/02 ,  C04B14/02 ,  C04B41/46

Abstract: Porous particles of essentially inorganic components contain an essentially pore-free coating, with the diameter of the particles being a maximum of 2000 mu m and the proportion by weight of the coating based on the particles including the coating being at least 15%.

公开(公告)号：DE3360841D1

公开(公告)日：1985-10-24

申请号：DE3360841

申请日：1983-06-22

Applicant: BAYER AG

Inventor： DAHM MANFRED DR ,  WEIMANN NORBERT DR ,  NEHEN ULRICH DR ,  MULLER HANNS PETER DR ,  JABS GERT DR ,  AWATER ALBERT DR ,  BARNES JAMES MICHAEL

IPC: B01J13/02 ,  B01J13/16 ,  B41M5/00 ,  B41M5/165 ,  C08G18/32 ,  C08G18/80

Abstract: Microcapsules having a hydrophobic core material and capsule walls formed by the reaction of water-insoluble polyamines with water-soluble bisulphite adducts of polyisocyanates, a process for the production thereof which is characterized in that a mixture of a hydrophobic core material and water-insoluble polyamines is emulsified in water or in an aqueous protective colloid solution to the required particle size, water-soluble bisulphite adducts of polyisocyanates in the form of powders or aqueous solutions are added and the mixture is left to react to completion at temperatures of from 1 DEG to 140 DEG C., and applications thereof.

公开(公告)号：DE2542449A1

公开(公告)日：1977-04-07

申请号：DE2542449

申请日：1975-09-24

Applicant: BAYER AG

Inventor： WINKELMANN HANS DIETER DR ,  OERTEL HARALD DR ,  WEIMANN NORBERT DR

IPC: C08G18/00 ,  C07C67/00 ,  C07C239/00 ,  C07C281/06 ,  C08G18/38 ,  C08G18/65 ,  C07C133/02 ,  C08L75/04 ,  C08G18/10

Abstract: The invention relates to monomethylol ether diols corresponding to the formula in which R represents a straight-chain or branched alkylene radical having up to 12 carbon atoms, and R' represents an alkyl radical.

公开(公告)号：DE59100361D1

公开(公告)日：1993-10-14

申请号：DE59100361

申请日：1991-07-13

Applicant: BAYER AG

Inventor： KLUG GUENTER DR ,  WEIMANN NORBERT DR ,  VOGEL JOSEF DR

IPC: B01J13/16 ,  B41M5/165 ,  B01J13/18 ,  C08G18/32 ,  C08G18/78

Abstract: Microcapsules which can be prepared at low temperatures contain walls composed of the product of an interface polyaddition and/or interface polycondensation reaction between a hydroxylamine and at least one component which is reactive with amino and alcohol groups. These microcapsules are advantageously used in the production of carbonless copying paper and thermal paper.

公开(公告)号：AT15612T

公开(公告)日：1985-10-15

申请号：AT83106073

申请日：1983-06-22

Applicant: BAYER AG

Inventor： DAHM MANFRED DR ,  WEIMANN NORBERT DR ,  NEHEN ULRICH DR ,  MUELLER HANNS PETER DR ,  JABS GERT DR ,  AWATER ALBERT DR ,  BARNES JAMES MICHAEL

IPC: B01J13/02 ,  B41M5/00

公开(公告)号：DE3165625D1

公开(公告)日：1984-09-27

申请号：DE3165625

申请日：1981-03-13

Applicant: BAYER AG

Inventor： JABS GERT DR ,  DAHM MANFRED DR ,  HAUS ARTUR DR ,  NEHEN ULRICH DR ,  RATH KLAUS ,  WEIMANN NORBERT DR

IPC: B41M1/02 ,  B41M1/06 ,  B41M1/08 ,  B41M5/00 ,  B41M5/124

Abstract: The invention relates to a pressure-sensitive, carbonless copying system and to a process for the production of pressure-sensitive, carbonless copying system wherein a non-aqueous, substantially solvent free printing ink containing micro-capsules which contain dye-precursors, is applied by wet and dry offset and book printing techniques to all or part of at least one surface of a paper substrate; and to printing inks comprising (1) binders, (2) microcapsules containing dye precursors, (3) spacers having a grain size of from 1.5 to 10 times the diameter of the microcapsules, and optionally auxiliaries and additives.

公开(公告)号：DE2707659A1

公开(公告)日：1978-08-24

申请号：DE2707659

申请日：1977-02-23

Applicant: BAYER AG

Inventor： WINKELMANN HANS-DIETER DR ,  WOLF KARL-HEINZ DR ,  OERTEL HARALD DR ,  WEIMANN NORBERT DR

IPC: C08G18/00 ,  C08G18/12 ,  C08G18/32 ,  C08G18/80 ,  C08G18/77 ,  C08G18/10

Abstract: Process for the production of solutions of segmented self-crosslinkable polyurethanes by incorporating in the polymer chain segments of the general formula M-CO-NH-D'-NH-CO-A, wherein D' is the divalent residue of an organic diisocyanate; M is a diol containing residue derived by reaction of the active N-hydrogen of an aminodiol or a hydrazinodiol which contains a primary or secondary amino group, with an isocyanate group; and A is an isocyanate masking group.