WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1999041328) MITIGATING FOULING AND REDUCING VISCOSITY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/041328    International Application No.:    PCT/US1998/026033
Publication Date: 19.08.1999 International Filing Date: 09.12.1998
Chapter 2 Demand Filed:    23.06.1999    
IPC:
C10G 9/12 (2006.01), C10G 9/16 (2006.01), C10G 75/04 (2006.01)
Applicants: NALCO/EXXON ENERGY CHEMICALS, L.P. [US/US]; 7701 Highway 90-A Sugarland, TX 77478 (US)
Inventors: MANEK, Maria, B.; (US).
CHIN, Hai, Chen; (US).
PRESENTI, Robert, G.; (US).
DIAZ-ARAUZO, Hernando; (US)
Agent: KEEFER, Timothy, J.; Wildman, Harrold, Allen & Dixon 225 West Wacker Drive Chicago, IL 60606-1229 (US)
Priority Data:
09/025,714 17.02.1998 US
Title (EN) MITIGATING FOULING AND REDUCING VISCOSITY
(FR) ATTENUATION DU FOULING ET REDUCTION DE LA VISCOSITE
Abstract: front page image
(EN)A method is disclosed for mitigating fouling and reducing viscosity in primary fractionators and quench sections of ethylene plants by adding to a hydrocarbon stream a mono and/or a polyalkyl-substituted phenol-formaldehyde resin having a weight average molecular weight of from about 1,000 to about 30,000 and at least one alkyl substituent containing from about 4 to about 24 carbon atoms, which alkyl substituent may be linear or branched.
(FR)Cette invention se rapporte à un procédé servant à atténuer le phénomène d'encrassement dit fouling et à réduire la viscosité dans des fractionnateurs primaires et dans les sections de trempage d'installations de production d'éthylène, ce procédé consistant à ajouter à un flux d'hydrocarbures une résine de phénol-formaldéhyde à substitution monoalkyle et/ou polyalkyle, ayant un poids moléculaire moyen pondéral compris entre 1000 environ et 30000 environ, et au moins un substituant alkyle contenant environ 4 à environ 24 atomes de carbone, ce substituant alkyle pouvant être linéaire ou ramifié.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, 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, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (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, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)