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1. (WO2013048690) RHEOLOGICAL METHODS TO DETERMINE THE PREDISPOSITION OF A POLYMER TO FORM NETWORK OR GEL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2013/048690 International Application No.: PCT/US2012/053957
Publication Date: 04.04.2013 International Filing Date: 06.09.2012
IPC:
C08F 210/16 (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
210
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16
Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
Applicants:
EXXONMOBIL CHEMICAL PATENTS INC. [US/US]; 13501 Katy Freeway Houston, TX 77079, US (AllExceptUS)
CHEVRON ORONITE COMPANY LLC [US/US]; 100 Chevron Way Richmond, CA 94802, US (AllExceptUS)
KOLB, Rainer [DE/US]; US (UsOnly)
DATTA, Sudhin [US/US]; US (UsOnly)
PATEL, Pritesh A. [US/US]; US (UsOnly)
NASS, Kirk A. [US/US]; US (UsOnly)
Inventors:
KOLB, Rainer; US
DATTA, Sudhin; US
PATEL, Pritesh A.; US
NASS, Kirk A.; US
Agent:
AMERNICK, Burton A.; Connolly Bove Lodge & Hutz LLP 1875 Eye Street, NW Suite 1100 Washington, DC 20006, US
Priority Data:
61/540,99729.09.2011US
Title (EN) RHEOLOGICAL METHODS TO DETERMINE THE PREDISPOSITION OF A POLYMER TO FORM NETWORK OR GEL
(FR) PROCÉDÉS RHÉOLOGIQUES POUR DÉTERMINER LA PRÉDISPOSITION D'UN POLYMÈRE À FORMER UN RÉSEAU OU UN GEL
Abstract:
(EN) The present disclosure relates to a method to determine the predisposition of a polymer to form network or gel in a lubricating oil which comprises obtaining a composition of a polymer in a diluent, measuring the shear stress as a function of shear rate, determining the yield stress using the Herschel-Bulkley equation and assessing the yield stress, thereby determining the predisposition of the polymer to form a network or gel.
(FR) Cette invention concerne un procédé pour déterminer la prédisposition d'un polymère à former un réseau ou un gel dans une huile lubrifiante, le procédé consistant à préparer une composition constituée du polymère dans un diluant, à mesurer la contrainte de cisaillement en fonction de la vitesse de cisaillement, à déterminer le seuil d'écoulement à l'aide de l'équation de Herschel-Bulkley et à évaluer ledit seuil d'écoulement, pour déterminer ainsi la prédisposition du polymère à former un réseau ou un gel.
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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, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)