EP 0222507 B1 19891213 - SHAPED ARTICLES OF CROSSLINKED POLYMERS
Title (en)
SHAPED ARTICLES OF CROSSLINKED POLYMERS
Publication
Application
Priority
US 78680685 A 19851011
Abstract (en)
[origin: EP0222507A1] Electrical conductors which are insulated by an inner polymeric layer having little or no cross-linking and high elongation, and an outer polymeric layer having a relatively high level of cross-linking and low elongation. Preferably each of the components comprises a crystalline fluorocarbon polymer, especially an ethylene/tetrafluoroethylene copolymer. Such articles can be prepared by (1) melt-extruding a first polymeric composition which contains little or no cross-linking agent, and a second polymeric composition which contains a greater amount of cross-linking agent, (2) maintaining the two extrudates under conditions such that cross-linking agent migrates from the second to the first composition, and (3) cross-linking both compositions, preferably by radiation.
IPC 1-7
IPC 8 full level
H01B 3/44 (2006.01); H01B 7/02 (2006.01); H01B 13/14 (2006.01)
CPC (source: EP KR)
H01B 3/443 (2013.01 - EP); H01B 7/00 (2013.01 - KR)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
EP 0222507 A1 19870520; EP 0222507 B1 19891213; AT E48720 T1 19891215; BR 8604970 A 19870714; CA 1295574 C 19920211; DE 3667569 D1 19900118; ES 2012452 B3 19900401; IL 80269 A0 19870130; IL 80269 A 19910310; JP H0679451 B2 19941005; JP S6293806 A 19870430; KR 870004466 A 19870509; KR 950007089 B1 19950630
DOCDB simple family (application)
EP 86307817 A 19861009; AT 86307817 T 19861009; BR 8604970 A 19861010; CA 520053 A 19861008; DE 3667569 T 19861009; ES 86307817 T 19861009; IL 8026986 A 19861009; JP 24116686 A 19861009; KR 860008497 A 19861010