公开(公告)号：DE3726458A1

公开(公告)日：1989-02-16

申请号：DE3726458

申请日：1987-08-08

Applicant: BASF AG

Inventor： SCHROTT WOLFGANG DR ,  NEUMANN PETER DR ,  WOLFF BERNARDO DR ,  STANGE ANDREAS DR

IPC: C09B3/22 ,  C09B5/02 ,  G11B7/244

Abstract: An optical recording medium containing a support (base, carrier) and a thin radiation-sensitive coating film containing dye and optionally binder, in which the dye has the formula where Z is nitrogen or CH, L is oxygen, sulphur, optionally substituted imino or a malononitrile, cyano acetate or malonate radical, and X, Y, m and n are each as defined in the description, and novel violanthrene compounds of the formula where L and R are as defined in the description.r

公开(公告)号：DE59505640D1

公开(公告)日：1999-05-20

申请号：DE59505640

申请日：1995-10-27

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  WITT MICHAEL DR ,  HAHN KLAUS DR ,  ALICKE GERHARD ,  DEMBEK GERHARD DR ,  RIETHUES MICHAEL DR ,  WOLFF BERNARDO DR

IPC: C08J9/14 ,  C08J9/00 ,  C08J9/16 ,  C08J11/06 ,  C08L23/00 ,  C08L23/06 ,  C08L25/00 ,  C08L25/04 ,  C08L25/06

公开(公告)号：AT79607T

公开(公告)日：1992-09-15

申请号：AT89107882

申请日：1989-04-29

Applicant: BASF AG

Inventor： WOLFF BERNARDO DR ,  SEYBOLD GUENTHER DR ,  KRUECKAU FRITZ ERNST

IPC: C04B14/06 ,  C04B38/08

公开(公告)号：DE4038784A1

公开(公告)日：1992-06-11

申请号：DE4038784

申请日：1990-12-05

Applicant: BASF AG

Inventor： WOLFF BERNARDO DR ,  HOHWILLER FRIEDER ,  SEYBOLD GUENTHER DR

IPC: C08J9/14 ,  C08J9/32 ,  C08J9/35 ,  C08K3/36 ,  C08K7/00 ,  C08K7/26 ,  C08L25/02 ,  C08L25/04

Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.

公开(公告)号：DE3914850A1

公开(公告)日：1990-11-08

申请号：DE3914850

申请日：1989-05-05

Applicant: BASF AG

Inventor： WOLFF BERNARDO DR ,  MIELKE MANFRED ,  SEYBOLD GUENTHER DR ,  OSTERTAG WERNER DR ,  FRICKE JOCHEN PROF DR ,  CAPS ROLAND DR

IPC: C01B33/155 ,  C01B33/158 ,  C04B14/06 ,  C04B30/00 ,  F16L59/00 ,  F16L59/02 ,  F16L59/08

Abstract: The material is obtainable by a) reacting an aqueous dispersion of waterglass and a pigment with a strong acid and/or waterglass with a pigment-containing strong acid to give a pigment-containing silica hydrogel, the pigment being characterised in that it scatters, absorbs or reflects infrared radiation of wavelength 3 - 10 mu m, b) substantially freeing the pigment-containing silica hydrogel thus obtained from ionic constituents by washing out with water, c) displacing the water present in the hydrogel by means of a low- boiling liquid which is inert to the pigment-containing silica gel, d) heating the liquid-containing silica gel thus obtained with complete covering with the liquid to supercritical conditions and e) subsequently removing the liquid from the solid by flash evaporation at supercritical temperature.

公开(公告)号：DE3814968A1

公开(公告)日：1989-11-16

申请号：DE3814968

申请日：1988-05-03

Applicant: BASF AG

Inventor： WOLFF BERNARDO DR ,  SEYBOLD GUENTHER DR ,  KRUECKAU FRITZ ERNST

IPC: C04B14/06 ,  C04B38/08