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1. (WO2001038431) COMPOSITION AND METHOD FOR COLOR IMPROVEMENT OF NITROXYL CONTAINING POLYMERS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/038431 International Application No.: PCT/EP2000/011378
Publication Date: 31.05.2001 International Filing Date: 16.11.2000
Chapter 2 Demand Filed: 13.03.2001
IPC:
C08K 5/32 (2006.01) ,C08K 5/3435 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5
Use of organic ingredients
16
Nitrogen-containing compounds
32
Compounds containing nitrogen bound to oxygen
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5
Use of organic ingredients
16
Nitrogen-containing compounds
34
Heterocyclic compounds having nitrogen in the ring
3412
having one nitrogen atom in the ring
3432
Six-membered rings
3435
Piperidines
Applicants:
PFAENDNER, Rudolf [DE/DE]; DE (UsOnly)
ROTH, Michael [DE/DE]; DE (UsOnly)
WUNDERLICH, Wiebke [DE/IT]; IT (UsOnly)
CIBA SPECIALTY CHEMICALS HOLDING INC. [CH/CH]; Klybeckstrasse 141 CH-4057 Basel, CH (AllExceptUS)
Inventors:
PFAENDNER, Rudolf; DE
ROTH, Michael; DE
WUNDERLICH, Wiebke; IT
Common
Representative:
CIBA SPECIALTY CHEMICALS HOLDING INC.; Patentabteilung Klybeckstrasse 141 CH-4057 Basel, CH
Priority Data:
99811089.425.11.1999EP
Title (EN) COMPOSITION AND METHOD FOR COLOR IMPROVEMENT OF NITROXYL CONTAINING POLYMERS
(FR) COMPOSITION ET PROCEDE D'AMELIORATION DE LA COULEUR DES POLYMERES CONTENANT UN NITROXYLE
Abstract:
(EN) The invention relates to a composition comprising, a) at least one oligomer, cooligomer, polymer or copolymer or blends thereof, containing a stable free nitroxyl radical (1); and b) a reducing agent; with the proviso that the composition is essentially free of a polymerizable monomer. A further subject is a process for improving the color of an oligomer, cooligomer, polymer or copolymer or blends thereof, containing a stable free nitroxyl radical (1); by adding a reducing agent to said polymer and heating said mixture to above the glass temperature in case of amorphous polymers or above the melting point in case of crystalline or semi-crystalline polymers.
(FR) L'invention se rapporte à une composition comportant: a) au moins un oligomère, un co-oligomère, un polymère ou un copolymère ou des mélanges de ces composés, contenant un radical (1) nitroxyle libre et stable; et b) un agent de réduction, à condition que la composition ne contienne sensiblement pas de monomère polymérisable. Une autre réalisation de l'invention concerne un procédé d'amélioration de la couleur d'un oligomère, d'un co-oligomère, d'un polymère ou d'un copolymère ou de mélanges de ces composés, contenant un radical (1) nitroxyle libre et stable, et consistant à ajouter un agent réducteur audit polymère et à chauffer ledit mélange à une température supérieure à la température de transition vitreuse dans le cas des polymères amorphes ou supérieure au point de fusion dans le cas de polymères cristallins ou semi-cristallins.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)