Crosslinked compositions containing silane-grafted...

Details Crosslinked compositions containing silane-grafted... Crosslinked compositions containing silane-grafted...

C - Chemistry, Metallurgy

09

D

C09D 151/06 (2006.01) B29C 61/00 (2006.01) C09D 123/12 (2006.01) C09D 123/26 (2006.01)

Patent

CA 2290318

A moisture-crosslinkable polypropylene material, comprising a silane-grafted polyolefin or olefin-silane copolymer and a non-silane modifed polypropylene homopolymer or copolymer; and a heat-shrinkable coating prepared therefrom. The coating material is formed by a process comprising: (a) reacting a polyolefin with a silane in the presence of a free- radical initiator to form a silane-grafted resin, or copolymerising a polyolefin with silane; (b) preparing a mixture of the silane-modified resin with a polypropylene and a silanol condensation catalyst; (c) forming the coating material by melt extruding the mixture formed in step (b); and (d) crosslinking the coating material by exposing it to combined heat and moisture.

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