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1. (WO2014179037) REDUCING GEL FORMATION IN POLYAMIDE MANUFACTURING PROCESSES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/179037    International Application No.:    PCT/US2014/034123
Publication Date: 06.11.2014 International Filing Date: 15.04.2014
IPC:
C08G 69/28 (2006.01), C08G 69/04 (2006.01), B24B 31/116 (2006.01)
Applicants: INVISTA NORTH AMERICA S.À.R.L. [US/US]; Three Little Falls Centre 2801 Centerville Road Wilmington, Delaware 19808 (US) (US only).
INVISTA TECHNOLOGIES S.À R.L. [LU/CH]; Zweigniederlassung St. Gallen Kreuzackerstrasse 9 CH-9000 St. Gallen (CH) (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW only)
Inventors: MICKA, Thomas A.; (US).
KELMAN, Charles R.; (US).
WEST, Gary R.; (US)
Agent: MADDEN, Robert B.; Invista North America S.à.r.l. 3 Little Falls Centre 2801 Centerville Road Wilmington, Delaware 19808 (US)
Priority Data:
61/817,963 01.05.2013 US
Title (EN) REDUCING GEL FORMATION IN POLYAMIDE MANUFACTURING PROCESSES
(FR) RÉDUCTION DE LA FORMATION DE GEL DANS DES PROCÉDÉS DE FABRICATION DE POLYAMIDES
Abstract: front page image
(EN)Described herein are methods of preparing high molecular weight polyamides which reduce or eliminate the production of unwanted gels during the production process. These methods reduce the formation of undesired polyamide gel by polishing the internal surfaces of the production equipment, thereby providing surfaces with smaller surface roughness values.
(FR)L'invention concerne des procédés de préparation de polyamides de poids moléculaire élevé qui réduisent ou éliminent la formation de gels non désirés au cours du processus de production. Ces procédés réduisent la formation de gel polyamide non désiré par polissage des surfaces internes de l'équipement de production, ce qui permet d'obtenir des surfaces présentant des valeurs de rugosité de surface plus petites.
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, IR, IS, JP, KE, KG, 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, SA, 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 (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, KM, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)