US 12,466,949 B2
E/E component containing polycarbonate material having high tracking resistance
Marius Nolte, Cologne (DE); Matthias Knaupp, Langenfeld (DE); Tim Hungerland, Cologne (DE); Joachim Morick, Leverkusen (DE); and Constantin Schwecke, Alfter (DE)
Assigned to Covestro Deutschland AG, Leverkusen (DE)
Appl. No. 19/109,608
Filed by Covestro Deutschland AG, Leverkusen (DE)
PCT Filed Sep. 20, 2023, PCT No. PCT/EP2023/075987
§ 371(c)(1), (2) Date Mar. 7, 2025,
PCT Pub. No. WO2024/068403, PCT Pub. Date Apr. 4, 2024.
Claims priority of application No. 22198823 (EP), filed on Sep. 29, 2022.
Prior Publication US 2025/0263551 A1, Aug. 21, 2025
Int. Cl. H01B 7/295 (2006.01); C08L 69/00 (2006.01)
CPC C08L 69/00 (2013.01) [H01B 7/295 (2013.01)] 15 Claims
 
1. An E/E component comprising
a first electrical conductor L1 and a second electrical conductor L2 at a first distance d1 and a second distance d2 to one another,
which are connected via a thermoplastic material M which is in direct contact with the first electrical conductor and the second electrical conductor,
wherein the distance d1 is the shortest distance between the first electrical conductor and the second electrical conductor along the surface of the thermoplastic material M and
wherein the distance d2 is the shortest distance between the first electrical conductor and the second electrical conductor through the air,
wherein d2 is selected in such a way that at the respective operating voltage U for the component a sparkover through the air is prevented,
wherein d1, at the operating voltage U listed below, has the following values:
d1 (0 V≤U≤250 V): 1.3 mm to <2.5 mm
d1 (250 V<U≤500 V): 2.5 mm to <5.0 mm
d1 (500 V<U≤1000 V): 5.0 mm to <10.0 mm
and wherein the thermoplastic material M comprises the following components:
A) at least one aromatic polycarbonate, aromatic polyester carbonate or mixtures thereof,
B) at least 5% by weight of at least one rubber-modified graft polymer having a graft substrate selected from the group consisting of acrylate rubbers, polybutadiene rubbers and styrene-butadiene block copolymer rubbers
and a graft superstrate free from structural units derived from acrylonitrile
C) at least 5% by weight of at least one phosphorus-containing flame retardant.