CROSSLINKED COMPOSITIONS CONTAINING SILANE-GRAFTED POLYOLEFINS AND POLYPROPYLENE

A moisture-crosslinkable polypropylene material, comprising a silane-grafted polyolefin or olefin-silane copolymer and a non-silane modifed polypropylene homopolymer o r copolymer; and a heat-shrinkable coating prepared therefrom. The coating material is formed by a process comprising: (a) reacting...

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Bibliographische Detailangaben
Hauptverfasser:	HEYDRICH, MARCUS P, TAILOR, DILIP K, STEELE, ROBERT EDWARD, JACKSON, PETER, TATHGUR, AMARJIT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A moisture-crosslinkable polypropylene material, comprising a silane-grafted polyolefin or olefin-silane copolymer and a non-silane modifed polypropylene homopolymer o r 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 fre e- 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.