US 11,873,375 B2
Reinforced polycarbonate compositions with improved heat resistance
Erik Schwartz, Bergen op Zoom (NL); Sascha Jan ter Horst, Bergen op Zoom (NL); Mark Adrianus Johannes van der Mee, Bergen op Zoom (NL); Johannes Martinus Dina Goossens, Bergen op Zoom (NL); Robert Dirk van de Grampel, Bergen op Zoom (NL); and Tony Farrell, Bergen op Zoom (NL)
Assigned to SHPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Filed by SHIPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Filed on Jun. 25, 2020, as Appl. No. 16/911,675.
Claims priority of application No. 19183241 (EP), filed on Jun. 28, 2019.
Prior Publication US 2020/0407517 A1, Dec. 31, 2020
Int. Cl. C08L 69/00 (2006.01); C08K 7/14 (2006.01); C08K 5/5399 (2006.01); C08J 5/04 (2006.01); C08G 64/08 (2006.01); C08J 9/00 (2006.01); C08K 5/00 (2006.01); C08K 5/521 (2006.01); C08L 27/18 (2006.01); C08L 83/04 (2006.01); C08K 5/523 (2006.01)
CPC C08J 5/043 (2013.01) [C08G 64/085 (2013.01); C08J 9/009 (2013.01); C08K 5/0066 (2013.01); C08K 5/521 (2013.01); C08K 5/5399 (2013.01); C08K 7/14 (2013.01); C08L 27/18 (2013.01); C08L 69/00 (2013.01); C08L 69/005 (2013.01); C08L 83/04 (2013.01); C08K 5/523 (2013.01); C08L 2201/08 (2013.01); C08L 2203/20 (2013.01); C08L 2203/30 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01)] 16 Claims
 
1. A reinforced polycarbonate composition comprising
30-60 weight percent of a bisphenol A homopolycarbonate; and
10-40 weight percent of a high heat polycarbonate having a glass transition temperature of 170° C. or higher determined per ASTM D3418 with a 20° C./min heating rate; and
8-16 weight percent of a poly(carbonate-siloxane) and 1-10 weight percent of a phosphorous-containing flame retardant comprising a phosphazene present in amount effective to provide 0.5 to 1.5 weight percent phosphorous,
wherein the phosphazene is a phenoxy cyclotriphosphazene, octaphenoxy cyclotetraphosphazene, decaphenoxy cyclopentaphosphazene, or a combination thereof, or the phosphazene is of formulas

OG Complex Work Unit Chemistry
or a combination thereof, wherein
w1 is 3-10,000,
w2 is 3-25, and
each Rw is independently a C1-12 alkyl, C2-12 alkenyl, C1-12 alkoxy, C6-12 aryl, C6-12 aryloxy, or polyoxy(C1-6 alkylene) group; and
0.01-0.5 weight percent of an anti-drip agent; and
5-30 weight percent of glass fibers; and
optionally, up to 5 weight percent of an additive composition,
wherein each amount is based on the total weight of the reinforced polycarbonate composition, which sums to 100 weight percent; and
wherein a molded sample of the polycarbonate composition has
a heat deflection temperature of greater than 115° C., as measured according to ISO 75 at 0.45 megapascal,
a Vicat B120 softening temperature of at least 130° C. as measured according to ISO 306, and
a flame test rating of V0 as measured according to UL-94 at a thickness of 0.8 millimeter.
 
15. A reinforced polycarbonate composition comprising
30-60 weight percent of a homopolycarbonate;
5-30 weight percent of a poly(carbonate-siloxane);
10-40 weight percent of a high heat polycarbonate having a glass transition temperature of 170° C. or higher determined per ASTM D3418 with a 20° C./min heating rate and comprising a poly(ester-carbonate) comprising bisphenol A carbonate units, and aromatic ester units derived from bisphenol A;
1-10 weight percent of a phosphorous-containing flame retardant present in amount effective to provide 0.1-1.5 weight percent phosphorous;
0.01-0.5 weight percent of an anti-drip agent;
5-30 weight percent of a reinforcing fiber; and
optionally, up to 10 weight percent of an additive composition,
wherein each amount is based on the total weight of the reinforced polycarbonate composition, which sums to 100 weight percent; and
wherein a molded sample of the polycarbonate composition has
a heat deflection temperature of greater than 115° C., as measured according to ISO 75 at 0.45 megapascal, or
a flame test rating of V1 as measured according to UL-94 at a thickness of 0.8 millimeter.