US 12,351,705 B2
Ethylene interpolymer products having intermediate branching
Zengrong Zhang, Calgary (CA); Fazle Sibtain, Calgary (CA); Niousha Kazemi, Calgary (CA); Kenneth Taylor, Sarnia (CA); and Shivendra Goyal, Calgary (CA)
Assigned to NOVA Chemicals (International) S.A., Fribourg (CH)
Filed by NOVA Chemicals (International) S.A., Fribourg (CH)
Filed on Aug. 25, 2022, as Appl. No. 17/895,547.
Application 17/895,547 is a continuation of application No. 17/068,919, filed on Oct. 13, 2020, abandoned.
Application 17/068,919 is a continuation of application No. 16/243,203, filed on Jan. 9, 2019, granted, now 10,882,987, issued on Jan. 5, 2021.
Prior Publication US 2023/0002596 A1, Jan. 5, 2023
Int. Cl. C08L 23/06 (2006.01); C08L 23/0807 (2025.01)
CPC C08L 23/06 (2013.01) [C08L 23/0815 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2207/06 (2013.01)] 14 Claims
 
1. An ethylene interpolymer product comprising:
(i) a first ethylene interpolymer;
(ii) a second ethylene interpolymer, and;
(iii) optionally a third ethylene interpolymer;
wherein said second ethylene interpolymer is characterized by an intermediate branching, wherein said intermediate branching is characterized by a Non-Comonomer Index Distribution, NCIDi, having a value characterized by Eq. (1a) and Eq. (1b);
NCIDi≤1.000−0.00201(log Mi−log Mo+4.93)+0.00137(log Mi−log Mo+4.93)2−0.00034(log Mi−log Mo+4.93)3  Eq. (1a)
NCIDi≥0.730−0.00388(log Mi−log Mo+4.93)+0.00313(log Mi−log Mo+4.93)2−0.00069(log Mi−log Mo+4.93)3  Eq. (1b)
wherein, Mo is a peak molecular weight that characterizes a molecular weight distribution of said second ethylene interpolymer when fit to a log normal distribution and Mi is an incremental molar mass that characterizes said molecular weight distribution; wherein a first derivative of said NCIDi,

OG Complex Work Unit Math
 Eq. (2),

OG Complex Work Unit Math
has a value of ≤−0.0001, coefficients β0, β1, β2 and β3 are generated by fitting said NCIDi of said second ethylene interpolymer to a third order polynomial, Eq. (3),
NCIDi=β0+β1(log Mi−log Mo+4.93)+β2(log Mi−log Mo+4.93)2+β3(log Mi−log Mo+4.93)3  Eq. (3)
wherein said NCIDi of said second ethylene interpolymer is obtained by deconvoluting an experimentally measured Non-Comonomer Index Distribution of said ethylene interpolymer product;
wherein said ethylene interpolymer product contains long chain branching as characterized by a dimensionless Long Chain Branching Factor, LCBF, having a value of ≥0.001.