US 12,404,368 B2
Reinforced flame retardant polycarbonate compositions with improved melt volume rates
Mark Adrianus Johannes van der Mee, Breda (NL); Fabrizio Micciche, Breda (NL); and Robert Dirk Van de Grampel, Tholen (NL)
Assigned to SHPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/781,741
Filed by SHPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Dec. 15, 2020, PCT No. PCT/IB2020/061978
§ 371(c)(1), (2) Date Jun. 2, 2022,
PCT Pub. No. WO2021/124112, PCT Pub. Date Jun. 24, 2021.
Claims priority of provisional application 62/948,523, filed on Dec. 16, 2019.
Prior Publication US 2023/0035378 A1, Feb. 2, 2023
Int. Cl. C08G 69/00 (2006.01); C08G 64/02 (2006.01); C08G 64/08 (2006.01); C08J 5/04 (2006.01)
CPC C08G 69/00 (2013.01) [C08G 64/02 (2013.01); C08G 64/08 (2013.01); C08J 5/043 (2013.01); C08J 2369/00 (2013.01)] 20 Claims
 
1. A reinforced polycarbonate composition comprising
50-95 wt % of a poly(aliphatic ester-carbonate);
5-40 wt % of a high heat copolycarbonate comprising high heat carbonate units derived from 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethyl-cyclohexane, N-phenyl phenolphthalein bisphenol, 4,4′-(1-phenylethylidene)bisphenol, 4,4′-(3,3-dimethyl-2,2-dihydro-1H-indene-1,1-diyl)diphenol, 1,1-bis(4-hydroxyphenyl)cyclododecane, 3,8-dihydroxy-5a, 10b-diphenyl-coumarano-2′,3′,2,3-coumarane, or a combination thereof;
0.1-0.8 wt % of a C1-16 alkyl sulfonate salt flame retardant;
0.1-0.8 wt % of an anti-drip agent;
5-35 wt % glass fibers;
optionally 0.1-10 wt % of an additive composition,
optionally 1-30 wt% of a polycarbonate different from the poly(aliphatic ester-carbonate), the high heat copolyca rbonate, and the poly(carbonate-siloxane), wherein the polycarbonate has a molecular weight of less than 24,000 grams per mole, as measured via gel permeation chromatography using polystyrene standards and calculated for polycarbonate; and
wherein each amount is based on the total weight of the reinforced polycarbonate composition, which sums to 100 wt %.