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1. (WO1998051721) HOMOPOLYMERS WITH HIGH PHOTOINDUCEABLE DOUBLE REFRACTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051721 International Application No.: PCT/EP1998/002618
Publication Date: 19.11.1998 International Filing Date: 04.05.1998
Chapter 2 Demand Filed: 24.11.1998
IPC:
C08F 120/36 (2006.01) ,G11B 7/25 (2006.01) ,G11C 13/02 (2006.01) ,G11C 13/04 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
120
Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02
Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
10
Esters
34
Esters containing nitrogen
36
containing oxygen in addition to the carboxy oxygen
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
241
Record carriers characterised by the selection of the material
242
of recording layers
244
comprising organic materials only
25
containing liquid crystals
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
13
Digital stores characterised by the use of storage elements not covered by groups G11C11/, G11C23/, or G11C25/173
02
using elements whose operation depends upon chemical change
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
13
Digital stores characterised by the use of storage elements not covered by groups G11C11/, G11C23/, or G11C25/173
04
using optical elements
Applicants:
BAYER AKTIENGESELLSCHAFT [DE/DE]; D-51368 Leverkusen, DE (AllExceptUS)
BERNETH, Horst [DE/DE]; DE (UsOnly)
CLAUSSEN, Uwe [DE/DE]; DE (UsOnly)
KOSTROMINE, Serguei [RU/DE]; DE (UsOnly)
NEIGL, Ralf [DE/DE]; DE (UsOnly)
VEDDER, Hans-Joachim [DE/DE]; DE (UsOnly)
Inventors:
BERNETH, Horst; DE
CLAUSSEN, Uwe; DE
KOSTROMINE, Serguei; DE
NEIGL, Ralf; DE
VEDDER, Hans-Joachim; DE
Agent:
BAYER AKTIENGESELLSCHAFT; D-51368 Leverkusen, DE
Common
Representative:
BAYER AKTIENGESELLSCHAFT; D-51368 Leverkusen, DE
Priority Data:
197 20 288.815.05.1997DE
Title (DE) HOMOPOLYMERE MIT HOHER PHOTOINDUZIERBARER DOPPELBRECHUNG
(EN) HOMOPOLYMERS WITH HIGH PHOTOINDUCEABLE DOUBLE REFRACTION
(FR) HOMOPOLYMERES A BIREFRINGENCE PHOTOINDUCTIBLE ELEVEE
Abstract:
(DE) Die Erfindung betrifft neue Seitenkettenpolymere, in denen durch Bestrahlung bei Raumtemperatur hohe optische Anisotropie erzeugt werden kann. Diese optische Anisotropie ist sehr thermostabil.
(EN) The invention relates to novel side-chained polymers in which a high optical anisotropy can be obtained by radiation at room temperature. Said optical anisotropy is highly thermostable.
(FR) L'invention concerne de nouveaux polymères à chaîne latérale dans lesquels une anisotropie optique élevée peut être produite par irradiation à température ambiante. Cette anisotropie optique est très thermostable.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
KR1020010012559SG68752EP0981558US6441113US20030083449US20050070678
CN1263540CA2289535AU1998075300