	US 12,187,893 B2
	Thermoplastic compositions, methods of their manufacture, and articles thereof
Laura Mely Ramirez, Evansville, IN (US); Tony Farrell, Bergen op Zoom (NL); Paul Dean Sybert, Evansville, IN (US); and Remco Wirtz, Bergen op Zoom (NL)
Assigned to SHPP GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
Appl. No. 17/614,014
Filed by SHPP Global Technologies B.V., Bergen Op Zoom (NL)
PCT Filed May 29, 2020, PCT No. PCT/US2020/035214 § 371(c)(1), (2) Date Nov. 24, 2021, PCT Pub. No. WO2020/243492, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/857,418, filed on Jun. 5, 2019.
Claims priority of application No. 19177748 (EP), filed on May 31, 2019.
Prior Publication US 2022/0220312 A1, Jul. 14, 2022
Int. Cl. C08L 83/10 (2006.01); B33Y 70/00 (2020.01); C09D 183/10 (2006.01)

CPC C08L 83/10 (2013.01) [B33Y 70/00 (2014.12); C09D 183/10 (2013.01); C08L 2205/035 (2013.01)]

15 Claims

1. A thermoplastic composition comprising: 40 to 75 wt % of a poly(carbonate-siloxane-arylate);

5 to 45 wt % of a poly(carbonate-siloxane) present in an amount effective to provide 0.75 to 7 wt % of siloxane units;

10 to 40 wt % of a polycarbonate homopolymer;

5 to 15 wt % of an organophosphorus compound in an amount effective to provide 0.1 to 1 wt % of phosphorus; and

optionally, 0.1 to 10 wt % of an additive composition,

wherein each amount is based on the total weight of the poly(carbonate-siloxane-arylate), poly(carbonate-siloxane), polycarbonate homopolymer, flame retardant, and optional additive composition, which does not exceed 100%; and

Wherein

the thermoplastic composition has a melt volume flow rate of greater than 6 cm³/10 min when measured in accordance with the ISO-1133-1:2011 standard at 300° C. under a load of 1.2 kg with a residence time of 300 seconds; and

an article molded from the thermoplastic composition has

a 2-minute integrated heat release rate of less than or equal to 65 kW-min/m²and a peak heat release rate of less than 65 kW/m²as measured using the method according to Part IV, OSU Heat Release of FAR/JAR 25.853,

Amendment 25-116; and

a notched Izod impact resistance of greater than 30 KJ/m2 determined in accordance with ISO 180:2000 on notched 4 millimeter thick ISO bars at 23° C., with a 5.5 J hammer;

a notched Izod impact resistance of greater than 700 J/m2 measured on notched 3.2 mm bars at 23° C., in accordance with the ASTM-D256-10 (2018) standard.