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1. (WO2013116611) METHODS AND COMPOSITIONS FOR STYRENE INHIBITION VIA IN SITU GENERATION OF QUINONE METHIDES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/116611 International Application No.: PCT/US2013/024297
Publication Date: 08.08.2013 International Filing Date: 01.02.2013
IPC:
C07C 7/20 (2006.01) ,C07C 15/46 (2006.01) ,C08F 2/40 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
7
Purification, separation or stabilisation of hydrocarbons; Use of additives
20
Use of additives, e.g. for stabilisation
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
15
Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic part
40
substituted by unsaturated hydrocarbon radicals
42
monocyclic
44
the hydrocarbon substituent containing a carbon-to-carbon double bond
46
Styrene; Ring-alkylated styrenes
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
2
Processes of polymerisation
38
Polymerisation using regulators, e.g. chain terminating agents
40
using retarding agents
Applicants:
GENERAL ELECTRIC COMPANY [US/US]; 1 River Road Schenectady, NY 12345, US
Inventors:
LINK, John; US
Agent:
WINTER, Catherine, J.; General Electric Company Global Patent Operation 2 Corporate Drive, Suite 648 Shelton, CT 06484, US
Priority Data:
13/364,55402.02.2012US
Title (EN) METHODS AND COMPOSITIONS FOR STYRENE INHIBITION VIA IN SITU GENERATION OF QUINONE METHIDES
(FR) PROCÉDÉS ET COMPOSITIONS POUR L'INHIBITION DE STYRÈNE PAR GÉNÉRATION IN SITU DE MÉTHIDES DE QUINONE
Abstract:
(EN) Methods and compositions are provided for inhibiting the polymerization of a vinyl aromatic monomer, such as styrene monomer, during elevated temperature processing or distillation thereof or during storage or shipment of polymer containing product. The compositions include a combination of a hydroxybenzyl alcohol (1) and a dehydration catalyst (2). The combination is added to a vinyl aromatic monomer. Typically, the hydroxybenzyl alcohol is dehydrated in the styrene solution by the use of a strong acid catalyst acting as the dehydration catalyst, and the resultant reaction product is a quinone methide styrene inhibitor.
(FR) L'invention concerne des procédés et compositions pour inhiber la polymérisation d'un monomère aromatique de vinyle, tel qu'un monomère de styrène, pendant le traitement ou la distillation à température élevée de celui-ci ou pendant le stockage ou l'expédition de produit contenant le polymère. Les compositions comprennent une combinaison d'un alcool hydroxybenzylique (1) et un catalyseur de déshydratation (2). La combinaison est ajoutée à un monomère aromatique de vinyle. Généralement, l'alcool hydroxybenzylique est déshydraté dans la solution de styrène par l'utilisation d'un catalyseur acide fort agissant en tant que catalyseur de déshydratation, et le produit de réaction résultant est un inhibiteur de styrène de type méthide de quinone.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)