Ethylene interpolymer products having unique melt flow-intrinsic viscosity (MFIVI) and low unsaturation

An ethylene interpolymer product comprising at least two ethylene interpolymers, wherein said ethylene interpolymer product comprises:

• a) a dimensionless Melt Flow-Intrinsic Viscosity Index, MFIVI, of from ≥0.05 to ≤0.80, as defined by Eq.1
• MFIVI
• =
• (
• 1.9507
• ×
• (
• f
• bimodality
• ×
• f
• comon
• ⁢
• o
• _
• ⁢
• mer
• I
• f
• )
• 0.21678
• IV
• +
• 3.0122
• ×
• 10
• -
• 6
• ×
• (
• Comonomer
• ⁢
• Wt
• ⁢
• %
• )
• ×
• M
• v
• 0.725
• )
• -
• 1
• Eq
• .
• 1
• wherein, fbimodality is defined by Eq.2,
• fbimodality=10(−0.94831×Log(Pd)−0.94322×Cf−0.71879) Eq.2
• wherein a polydispersity of said ethylene interpolymer product, Pd (in Eq.2), is determined by Size Exclusion Chromatography (SEC), Pd=Mw/Mn, where Mw and Mn are a weight average and a number average molecular weight, respectively;
• wherein, a correction factor, Cf (in Eq.2) is determined according to the following two steps (i) and (ii),
• (i) a melt flow distribution function of said ethylene interpolymer product defined by Eq.3,
• Log(1/In)=β0+β1×Log(loading)+β2×(Log(loading))2 Eq.3
• is determined by plotting Log(1/In) versus Log(loading), where In is a measured melt index, of said ethylene interpolymer product, at loadings of 21600, 10000, 6480 and 2160 grams, measured at 190° C. according to ASTM D1238,
• (ii) a first derivative of said melt flow distribution function is defined by Eq.4,
• d
• ⁢
• Log
• ⁢
• (
• 1
• /
• I
• n
• )
• d
• ⁢
• Log
• ⁢
• (
• loading
• )
• =
• β
• 1
• +
• 2
• ×
• β
• 2
• ×
• Log
• ⁢
• (
• loading
• )
• Eq
• .
• 4
• and said correction factor, Cf (Eq.2), is the value of said first derivative (Eq.4) at a loading of 4000 g;
• wherein a comonomer weight percent, Comonomer Wt % (Eq.1), is the weight percent of comonomer in said ethylene interpolymer product as measured by FTIR according to ASTM D6645, if Comonomer Wt % is >14.95%, a comonomer factor, fcomonomer (Eq.1), is defined by Eq.5, if Comonomer Wt % is ≤14.95%, said comonomer factor is defined by Eq.6,
• fcomonomer=10(0.018790×(Comonomer Wt %)−0.28053) Eq.5,
• fcomonomer=1 Eq.6;
• wherein a fitted melt index, If (Eq.1), of said ethylene interpolymer product, is determined by the value of said melt flow distribution function (Eq.3) at a loading of 4000 g;
• wherein, IV and Mv (Eq.1) are an intrinsic viscosity and a viscosity average molar mass, respectively, of said ethylene interpolymer product as determined by 3D-SEC;
• b) said first derivative,
• d
• ⁢
• Log
• ⁢
• (
• 1
• /
• I
• n
• )
• d
• ⁢
• Log
• ⁢
• (
• loading
• )
• (Eq.4) at a loading of 4000 g, having values from >−1.51 to ≤−1.15;
• c) a sum of unsaturation, SUMU, of from ≥0.005 to <0.047 unsaturations per 100 carbon atoms, as defined by Eq.7,
• SUMU=(2×I+SCU+TU) Eq.7,
• wherein IU, SCU and TU are the amount of an internal, side chain and terminal unsaturation per 100 carbons, respectively, in said ethylene interpolymer product, as determined by ASTM D3124-98 and ASTM D6248-98;
• and
• d) a residual catalytic metal of from >0.03 to ≤5 ppm of hafnium, wherein the residual catalytic metal is measured using neutron activation.