| US 11,094,427 B2 | ||
| Electrical field grading material and use thereof in electrical cable accessories | ||
| Luigi Caimi, Milan (IT); Stefano Pogliani, Milan (IT); and Ivan Troia, Milan (IT) | ||
| Assigned to PRYSMIAN S.p.A., Milan (IT) | ||
| Appl. No. 16/349,504 | ||
| Filed by PRYSMIAN S.p.A., Milan (IT) | ||
| PCT Filed Nov. 15, 2016, PCT No. PCT/IB2016/056856 § 371(c)(1), (2) Date May 13, 2019, PCT Pub. No. WO2018/091941, PCT Pub. Date May 24, 2018. |
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| Prior Publication US 2019/0295737 A1, Sep. 26, 2019 | ||
| Int. Cl. H01B 3/04 (2006.01); H01B 3/00 (2006.01); C08K 3/04 (2006.01); H01B 1/12 (2006.01); H01B 1/22 (2006.01); H01B 1/24 (2006.01); H01B 7/02 (2006.01); H02G 15/064 (2006.01); H02G 15/184 (2006.01) | ||
| CPC H01B 3/004 (2013.01) [C08K 3/04 (2013.01); H01B 1/128 (2013.01); H01B 1/22 (2013.01); H01B 1/24 (2013.01); H01B 7/0291 (2013.01); H02G 15/064 (2013.01); H02G 15/184 (2013.01)] | 13 Claims |
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1. Electrical field grading material which comprises a non-polar elastomeric polymer, a phyllosilicate filler and a carbon black filler, wherein any carbon black filler present in the electric field grading material has a dibutyl phthalate (DBP) absorption number from 30 to 80 ml/100 g, and wherein the phyllosilicate filler and the carbon black filler are in a weight ratio of from 0.9 to 12.
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