(12) International Application Status Report

Received at International Bureau: 16 February 2004 (16.02.2004)

Information valid as of: Not available

Report generated on: 20 September 2021 (20.09.2021)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2004/06098922 July 2004 (22.07.2004) English (EN)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/US2003/03897405 December 2003 (05.12.2003) English (EN)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
60/433,740 (US)16 December 2002 (16.12.2002) Priority document received (in compliance with PCT Rule 17.1)
10/632,584 (US)01 August 2003 (01.08.2003) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
C08K 3/32 (2006.01); C08K 5/42 (2006.01); C08K 5/49 (2006.01); C08K 7/14 (2006.01); C08L 27/18 (2006.01); C08L 69/00 (2006.01)

(71) Applicant(s):
GENERAL ELECTRIC COMPANY [US/US]; 1 River Road Schenectady, NY 12345 (US) (for all designated states except US)
LIN, Ye-Gang [CN/US]; 334 Key West Drive Evansville, IN 47712 (US) (for US only)
SHETH, Kapil, Chandrakant [IN/US]; 331 Hope Court Evansville, IN 47712 (US) (for US only)
SINGH, Rajendra, Kashinath [IN/US]; 8500 Aster Lane Evansville, IN 47712 (US) (for US only)

(72) Inventor(s):
LIN, Ye-Gang; 334 Key West Drive Evansville, IN 47712 (US)
SHETH, Kapil, Chandrakant; 331 Hope Court Evansville, IN 47712 (US)
SINGH, Rajendra, Kashinath; 8500 Aster Lane Evansville, IN 47712 (US)

(74) Agent(s):
WINTER, Catherine, J.; General Electric Company 3135 Easton Turnpike (W3C) Fairfield, CT 06828 (US)

(54) Title (EN): METHOD FOR MAKING FIRE-RETARDED GLASS-FILLED POLYCARBONATE AND RELATED COMPOSITIONS
(54) Title (FR): PROCEDE DE FABRICATION DE POLYCARBONATE AU VERRE IGNIFUGE ET COMPOSITIONS ASSOCIEES

(57) Abstract:
(EN): It has now been surprisingly found that addition of a phosphorous-containing oxy acid to a glass-filled polycarbonate composition substantially improves its fire retardant performance. Thus, the present invention provides a method for making a flameretarded glass-filled polycarbonate resin comprising adding to the resin an effective flame-retardant amount of a phosphorous-containing oxy acid. Where appropriate, the melt strength of the polycarbonate is enhanced by the addition of an antidrip agent and the performance can be further enhanced by the addition of a flame retardant. Use of such a composition results in superior fire-retardant performance.
(FR): On a eu la surprise de découvrir que l'adjonction d'un oxyde acide phosphoré à une composition de polycarbonate au verre en améliorait sensiblement les capacités ignifuges, d'où la présente invention qui porte sur un procédé de fabrication de résine de polycarbonate au verre ignifuge consistant à ajouter à la résine une quantité efficace d'oxyde acide phosphoré. Si nécessaire la résistance à chaud du polycarbonate est renforcée par l'adjonction d'un agent anti-coulures et ses performances peuvent être encore améliorées par l'adjonction d'un produit ignifuge. De telles compositions présentent d'excellentes capacités ignifuges.

International search report:
Received at International Bureau: 07 May 2004 (07.05.2004) [EP]

International Report on Patentability (IPRP) Chapter II of the PCT:
Not available

(81) Designated States:
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, 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, OM, PH, PL, PT, RO, RU, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZM, ZW
European Patent Office (EPO) : AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR
African Intellectual Property Organization (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG
African Regional Intellectual Property Organization (ARIPO) : BW, GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW
Eurasian Patent Organization (EAPO) : AM, AZ, BY, KG, KZ, MD, RU, TJ, TM