Moisture curable propylene-α-olefin copolymers
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United States of America Patent
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Jul 22, 2014
Grant Date -
Jun 4, 2009
app pub date -
Dec 4, 2007
filing date -
Dec 4, 2007
priority date (Note) -
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Abstract
An aspect of the description is directed to hydrolysable silane graft propylene-α-olefin copolymers useful for moisture curable sealants, the copolymers comprising a propylene-α-olefin copolymer component comprising propylene-derived units and from 5 to 35 wt %, by weight of the propylene-α-olefin copolymer, of ethylene-derived units or a C4 to C10 α-olefin-derived unit, and having, in one embodiment, the following features: a density of from 0.850 to 0.920 g/cm3; a MWD of from 1.5 to 20; an Hf of less than or equal to 75 J/g; a Tm of from 25 to 105° C.; and a triad tacticity by 13C NMR of 75% or greater; and a hydrolysable silane component. The graft copolymer can be combined with oil and/or a thermoplastic to form a graft copolymer composition capable of being cross-linked by exposure to moisture.
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