US 12,293,857 B2
Composite of non-polar organic polymer, polar organic polymer, and ultra-low-wettability carbon black
Tian Lan, Langhorne, PA (US); Xindi Yu, Phoenixville, PA (US); Michael Q. Tran, Wayne, PA (US); Paul J. Brigandi, Schwenksville, PA (US); Jeffrey M. Cogen, Flemington, NJ (US); Timothy J. Person, Pottstown, PA (US); Yichi Zhang, Novi, MI (US); Junsi Gu, Malvern, PA (US); Jessica Ye Huang, Sugarland, TX (US); and Casey A. Wolf, Burlington, NJ (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 16/977,603
Filed by Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Mar. 22, 2019, PCT No. PCT/US2019/023511
§ 371(c)(1), (2) Date Sep. 2, 2020,
PCT Pub. No. WO2019/190901, PCT Pub. Date Oct. 3, 2019.
Claims priority of provisional application 62/649,128, filed on Mar. 28, 2018.
Prior Publication US 2021/0005344 A1, Jan. 7, 2021
Int. Cl. H01B 1/24 (2006.01); C08L 23/06 (2006.01); C08L 23/0853 (2025.01)
CPC H01B 1/24 (2013.01) [C08L 23/06 (2013.01); C08L 23/0853 (2013.01); C08L 2203/20 (2013.01); C08L 2205/025 (2013.01); C08L 2207/066 (2013.01); C08L 2312/00 (2013.01)] 15 Claims
 
1. A semiconductive composite material comprising (A) a non-polar polyolefin polymer in a first phase, (AA) a polar ethylene-based copolymer in a second phase, which is at least partially immiscible in the first phase, and an electrical conducting effective amount of (B) a carbon black (CB), which has a Brunauer-Emmett-Teller (BET) nitrogen surface area of from 35 to 190 square meters per gram (m2/g), measured by BET Nitrogen Surface Area Test Method; and an oil absorption number (OAN) from 115 to 180 milliliters of oil per 100 grams (mL/100 g), measured by Oil Absorption Number Test Method; and a water uptake of from 400 to 2400 parts per million (ppm, weight), as measured by a Moisture Uptake Test Method performed by drying a carbon black sample in a vacuum oven at 100° C. overnight, measuring the weight of the dried carbon black sample, placing the dried carbon black sample inside a chamber with well-controlled 80% relative humidity (RH) and a temperature of 24° C. for 24 hours to give a humidified carbon black sample, weighing the humidified carbon black sample, and calculating the amount of moisture uptake in weight parts per million using the following equation: amount moisture uptake=(weight of humidified carbon black sample−weight of dried carbon black sample) divided by weight of dried carbon black sample.