Polyaminosiloxane Water Tree Repellant for Electrical Insulation

Patent metadata

Field	Value
Publication number	US-2023416498-A1
Application number	US-202018251271-A
Country	US
Kind code	A1
Filing date	Oct 29, 2020
Priority date	Oct 29, 2020
Publication date	Dec 28, 2023
Grant date	—

Abstract

A crosslinkable composition including an ethylene-based polymer, an aminosilane, and optionally a peroxide. The aminosilane is represented by the following formula (I): wherein R 1 , R 2 , and R 3 are the same or different and individually selected from the group consisting of hydrogen and a C 1 -C 20 alkyl group; Y 1 is selected from the group consisting of an alkyl group and an alkoxy group; Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group, and n is 0 or 1. A crosslinked composition formed from the crosslinkable composition is also disclosed.

First claim

1 . A crosslinkable composition comprising:
an ethylene-based polymer; an aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 20 alkyl group,
Y 1 is selected from the group consisting of an alkyl group and an alkoxy group,
Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group,
n is 0 or 1; and
optionally a peroxide.

2 . The crosslinkable composition of claim 1 wherein the ethylene-based polymer has a density from 0.91 g/cc to 0.93 g/cc; and
a melt index from 0.5 g/10 min to 5.0 g/10 min.

3 . The crosslinkable composition of claim 1 comprising the aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 4 alkyl group,
Y 1 is a C 1 -C 4 alkyl group,
Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group, and
n is 1.

4 . The crosslinkable composition of claim 1 comprising the aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 4 alkyl group,
Y 1 is a C 1 -C 4 alkoxy group,
Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group, and
n is 1.

5 . The crosslinkable composition of claim 1 comprising the aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 4 alkyl group, and
n is 0.

6 . The crosslinkable composition of claim 1 comprising
from 80 wt % to 99 wt % of the ethylene-based polymer;
from 0.1 wt % to 0.9 wt % of the aminosilane; and
from greater than 0 wt % to less than 2 wt % peroxide.

7 . The crosslinkable composition of claim 1 comprising an additive selected from the group consisting of an antioxidant, a scorch retardant, a coagent, a nucleating agent, a processing aid, an extender oil, carbon black, nanoparticles, a UV stabilizer, and combinations thereof.

8 . A crosslinked composition comprising:
an ethylene-based polymer; an aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 20 alkyl group,
Y 1 is selected from the group consisting of an alkyl group and an alkoxy group,
Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group,
n is 0 or 1.

9 . The crosslinked composition of claim 8 wherein the ethylene-based polymer has a density from 0.91 g/cc to 0.93 g/cc; and
a melt index from 0.5 g/10 min to 5.0 g/10 min.

10 . The crosslinked composition of claim 8 comprising the aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 4 alkyl group,
Y 1 is a C 1 -C 4 alkyl group,
Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group, and
n is 1.

11 . The crosslinked composition of claim 8 comprising the aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 4 alkyl group,
Y 1 is a C 1 -C 4 alkoxy group,
Y 2 is selected from the group consisting of an alkyl group and an aminoalkyl group, and
n is 1.

12 . The crosslinked composition of claim 8 comprising the aminosilane having the Formula (I)

wherein
R 1 , R 2 , and R 3 are the same or different and each individually is selected from the group consisting of hydrogen and a C 1 -C 4 alkyl group, and
n is 0.

13 . The crosslinked composition of claim 8 comprising an additive selected from the group consisting of an antioxidant, a scorch retardant, a coagent, a nucleating agent, a processing aid, an extender oil, carbon black, nanoparticles, a UV stabilizer, and combinations thereof.

14 . The crosslinked composition of claim 8 comprising
from 90 wt % to 99 wt % of the ethylene-based polymer;
from 0.1 wt % to 1.0 wt % of the aminosilane; and
the crosslinked composition has
(i) an average WTL less than 10.0%, and
(ii) a dissipation factor less than 0.1%.

Assignees

• Dow Global Technologies Llc

Inventors

• He Chao
• Sun Yabin
• Gou qian
• Cogen Jeffrey M
• Person Timothy J

Classifications

• C08K5/544 Primary

  containing nitrogen · CPC title

• H01B3/441

  from alkenes · CPC title

• H01B7/2813 Primary

  Protection against damage caused by electrical, chemical or water tree deterioration · CPC title

• C08L2312/00

  Crosslinking · CPC title

• C08K5/14

  Peroxides · CPC title