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US 2014/0193628 A1Published application
Crosslinked, Melt-Shaped Articles and Compositions for Producing Same
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsMohamed Esseghir, Jeffrey M. Cogen, Saurav S. Sengupta
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Abstract
Disclosed is a crosslinkable mixture comprising a polyolefin, an alkoxysilane, an organopolysiloxane, a free radical initiator and a liquid polymer modifier. The organopolysiloxane contains two or more hydroxyl end groups. When the crosslinkable mixture is melt-shaped, a unique crosslinked composition is formed. The liquid polymer modifier improves flexibility of the melt-shaped article without decreasing dielectric strength.
Claims18
1-8. (canceled)
A melt-shaped article comprising:
- a crosslinked polyethylene composition;
- an organopolysiloxane containing two or more hydroxyl end groups;
- and
- a liquid polymer modifier.
1 more element
A process for forming a melt-shaped article comprising:
- (A) forming a crosslinkable mixture comprising:
- 1. an organopolysiloxane containing two or more functional end groups;
- 2. a polyolefin;
- 3. an alkoxysilane;
- 4. a aeroxide;
- and
- 5. a liquid polymer modifier;
- (B) melt-shaping the mixture into an article at conditions sufficient to graft the alkoxysilane to the polyolefin and to partially crosslink the silane-grafted polyolefin;
- and
- (C) cooling and continuing the crosslinking of the article.
7 more elements
Dependencies are inferred from the claim text.