US 2026/0217883 A1Published application

Ethylene interpolymer products and films

AssigneeNOVA Chemicals (International) S.A.

InventorsZengrong ZHANG, Fazle SIBTAIN

Life of this patent

Estimating the term…

Abstract

An ethylene interpolymer product having defined branching and unsaturation characteristics. The ethylene interpolymer product comprises: a first fraction having a molecular weight distribution index Mw/Mn of from 1.8 to 4.0; and a second fraction having a molecular weight distribution index Mw/Mn of from 2.0 to 6.0.

Claims19

Dependent claims

An ethylene interpolymer product comprising:

from 30 to 45 weight percent of a first fraction having a molecular weight distribution index Mw/Mn of from 1.8 to 4.0;
and
from 55 to 70 weight percent of a second fraction having a molecular weight distribution index Mw/Mn of from 2.0 to 6.0;
wherein the second fraction has a non-comonomer index distribution, NCIDi2, having a value characterized by eq.(1a) and eq.(1b);
NCID
i
2
≤
1
.
0
⁢
0
⁢
0
-
0
.
0
⁢
0
⁢
2
⁢
0
⁢
1
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
0.00137
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
2
-
0
.
0
⁢
0
⁢
0
⁢
3
⁢
4
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
3
eq
.
(
1
⁢
a
)
NCID
i
2
≥
0
.
7
⁢
3
⁢
0
-
0
.
0
⁢
0
⁢
3
⁢
8
⁢
8
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
0.00313
(
log
⁢
M
i
-
log
⁢
M
o
+
4.93
)
2
-
0
.
0
⁢
0
⁢
0
⁢
6
⁢
9
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
3
eq
.
(
1
⁢
b
)
wherein, Mo is a peak molecular weight that characterizes a molecular weight distribution of the second fraction when fit to a log-normal distribution and Mi is an incremental molar mass that characterizes said molecular weight distribution;
wherein a first semi-log derivative of the NCIDi2, d (NCIDi2)/d log Mi, eq.(2),
d
⁡
(
NCID
i
2
)
/
d
⁢
log
⁢
M
i
=
β
1
+
2
⁢
β
2
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
3
⁢
β
3
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
2
eq
.
(
2
)
has a value of ≤−0.0001, wherein coefficients β0, β1, β2, and β3 are generated by fitting the NCIDi2 to a third order polynomial, eq.(3),
NCID
i
2
=
β
0
+
β
1
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
β
2
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
2
+
β
3
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
3
eq
.
(
3
)
wherein the ethylene interpolymer product contains detectable levels of long chain branching as characterized by a dimensionless Long Chain Branching Factor, LCBF, of ≥0.005;
and
wherein the ethylene interpolymer product has a sum of unsaturation of ≥0.047 per 100 carbon;
wherein the weight percent and the molecular weight distribution index of the first fraction and the second fraction are obtained by deconvoluting an experimentally measured molecular weight distribution of the ethylene interpolymer product, wherein the weight percent of the first or second fraction is defined as the weight of the first or second fraction divided by the weight of the sum of the first fraction and the second fraction, multiplied by 100, and wherein the NCIDi2 is obtained by deconvoluting an experimentally measured non-comonomer index distribution of the ethylene interpolymer product.

342 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/148,390Filed 18 Jan 2023
Published: 30 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

C08F 210/16
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…
B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 27/32
Layered products comprising a layer of synthetic resin: comprising polyolefins
C08J 5/18
Manufacture of articles or shaped materials containing macromolecular substances: manufacture of films or sheets

Family

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Abstract

An ethylene interpolymer product comprising:

from 30 to 45 weight percent of a first fraction having a molecular weight distribution index Mw/Mn of from 1.8 to 4.0;
and
from 55 to 70 weight percent of a second fraction having a molecular weight distribution index Mw/Mn of from 2.0 to 6.0;
wherein the second fraction has a non-comonomer index distribution, NCIDi2, having a value characterized by eq.(1a) and eq.(1b);
NCID
i
2
≤
1
.
0
⁢
0
⁢
0
-
0
.
0
⁢
0
⁢
2
⁢
0
⁢
1
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
0.00137
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
2
-
0
.
0
⁢
0
⁢
0
⁢
3
⁢
4
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
3
eq
.
(
1
⁢
a
)
NCID
i
2
≥
0
.
7
⁢
3
⁢
0
-
0
.
0
⁢
0
⁢
3
⁢
8
⁢
8
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
0.00313
(
log
⁢
M
i
-
log
⁢
M
o
+
4.93
)
2
-
0
.
0
⁢
0
⁢
0
⁢
6
⁢
9
⁢
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
3
eq
.
(
1
⁢
b
)
wherein, Mo is a peak molecular weight that characterizes a molecular weight distribution of the second fraction when fit to a log-normal distribution and Mi is an incremental molar mass that characterizes said molecular weight distribution;
wherein a first semi-log derivative of the NCIDi2, d (NCIDi2)/d log Mi, eq.(2),
d
⁡
(
NCID
i
2
)
/
d
⁢
log
⁢
M
i
=
β
1
+
2
⁢
β
2
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
3
⁢
β
3
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
2
eq
.
(
2
)
has a value of ≤−0.0001, wherein coefficients β0, β1, β2, and β3 are generated by fitting the NCIDi2 to a third order polynomial, eq.(3),
NCID
i
2
=
β
0
+
β
1
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
+
β
2
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
2
+
β
3
(
log
⁢
M
i
-
log
⁢
M
o
+
4
.
9
⁢
3
)
3
eq
.
(
3
)
wherein the ethylene interpolymer product contains detectable levels of long chain branching as characterized by a dimensionless Long Chain Branching Factor, LCBF, of ≥0.005;
and
wherein the ethylene interpolymer product has a sum of unsaturation of ≥0.047 per 100 carbon;
wherein the weight percent and the molecular weight distribution index of the first fraction and the second fraction are obtained by deconvoluting an experimentally measured molecular weight distribution of the ethylene interpolymer product, wherein the weight percent of the first or second fraction is defined as the weight of the first or second fraction divided by the weight of the sum of the first fraction and the second fraction, multiplied by 100, and wherein the NCIDi2 is obtained by deconvoluting an experimentally measured non-comonomer index distribution of the ethylene interpolymer product.

342 more elements

Facts

Application

19/148,390Filed 18 Jan 2023

Published

30 Jul 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C08F 210/16
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…
B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 27/32
Layered products comprising a layer of synthetic resin: comprising polyolefins
C08J 5/18
Manufacture of articles or shaped materials containing macromolecular substances: manufacture of films or sheets