Global Patent Index - EP 1488418 A1

EP 1488418 A1 2004-12-22 - SQUARYLIUM DYES AS A LIGHT-ABSORBING COMPOUND IN THE INFORMATION LAYER OF OPTICAL DATA CARRIERS

Title (en)

SQUARYLIUM DYES AS A LIGHT-ABSORBING COMPOUND IN THE INFORMATION LAYER OF OPTICAL DATA CARRIERS

Title (de)

SQUARYLIUMFARBSTOFFE ALS LICHTABSORBIERENDE VERBINDUNG IN DER INFORMATIONSCHICHT VON OPTISCHEN DATENTRÄGERN

Title (fr)

COLORANTS SQUARYLIUM SERVANT DE COMPOSES PHOTO-ABSORBANTS DANS LA COUCHE D'INFORMATIONS DE SUPPORTS DE DONNEES OPTIQUES

Publication

EP 1488418 A1 (DE)

Application

EP 03744371 A

Priority

  • DE 10212199 A
  • DE 10245581 A
  • EP 0302789 W

Abstract (en)

[origin: US2005142489A1] Novel squarylium compounds for optical data carriers have been found. The latter comprise a preferably transparent substrate to whose surface a light-writable information layer, if desired one or more reflection layers and a further substrate or a protective layer have been applied and can be written on and read by means of red light, preferably laser light, where the information layer comprises a light-absorbent compound and, if desired, a binder. They are characterized in that at least the said squarylium compounds are used as light-absorbent compound.

IPC 1-7 (main, further and additional classification)

G11B 7/24; C07D 207/32; C09B 47/04; C09B 57/00

IPC 8 full level (invention and additional information)

B41M 5/26 (2006.01); C07D 207/325 (2006.01); C07D 207/34 (2006.01); C07D 207/44 (2006.01); C09B 47/04 (2006.01); C09B 47/08 (2006.01); C09B 47/10 (2006.01); C09B 57/00 (2006.01); C09B 67/02 (2006.01); G11B 7/244 (2006.01); G11B 7/246 (2006.01); G11B 7/247 (2006.01); G11B 7/248 (2006.01); G11B 7/249 (2006.01); G11B 7/2492 (2013.01); G11B 7/254 (2006.01); G11B 7/253 (2006.01); G11B 7/2534 (2013.01); G11B 7/2542 (2013.01); G11B 7/258 (2006.01); G11B 7/259 (2013.01)

CPC (invention and additional information)

G11B 7/246 (2013.01); C09B 47/04 (2013.01); C09B 47/085 (2013.01); C09B 57/007 (2013.01); C09B 67/0097 (2013.01); G11B 7/244 (2013.01); G11B 7/248 (2013.01); G11B 7/2492 (2013.01); G11B 7/2534 (2013.01); G11B 7/2542 (2013.01); G11B 7/259 (2013.01)

Citation (search report)

See references of WO 03079339A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

EPO simple patent family

US 2005142489 A1 20050630; AU 2003226651 A1 20030929; CN 1643587 A 20050720; EP 1488418 A1 20041222; JP 2005520835 A 20050714; WO 03079339 A1 20030925

INPADOC legal status


2008-03-26 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20071002

2005-07-13 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: LANXESS DEUTSCHLAND GMBH

2004-12-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20041019

2004-12-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

2004-12-22 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK