# US 10,870,098 B2 · Method of inhibiting reactor fouling and oligomerisation of olefin using the same

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- Number: US 10,870,098 B2
- Document ID: US10870098B2
- Status: Granted
- Kind: B2
- Application number: 16/305,222
- Filed: 2018-01-08
- Published: 2019-10-10
- Granted: 2020-12-22
- Earliest claimed: 2017-03-23
- Assignees: SK Innovation Co., Ltd.; SK Global Chemical Co., Ltd.
- Applicants: SK Innovation Co., Ltd.; SK Global Chemical Co., Ltd.
- Inventors: Hyo Seung Park; Woo Sung Jung; In Hyoup Song; Il Gu Jung; Jong Ho Choi
- Web page: https://patentgrep.com/patent/US10870098B2

## CPC

- B01J 19/002: {Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions}
- B01J 31/06: containing polymers {(organometallic polymers B01J31/123; polymer-bound organometallic complexes B01J31/165; coordination polymers B01J31/1691)}
- B01J 31/143: {of aluminium}
- B01J 31/146: {of boron}
- B01J 31/2409: {with more than one complexing phosphine-P atom}
- C07C 2/36: as phosphines, arsines, stilbines or bismuthines
- C08L 91/06: Waxes
- C08L 91/08: Mineral waxes
- B01J 2219/00247: Fouling of the reactor or the process equipment
- B01J 2231/20: Olefin oligomerisation or telomerisation
- B01J 2231/30: Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J 2531/62: Chromium
- C07C 11/04: Ethene
- C07C 11/107: with six carbon atoms
- C07C 2523/26: Chromium
- C07C 2531/14: of aluminium or boron
- C07C 2531/24: Phosphines
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Provided are a fouling inhibitor and a method of oligomerizing an olefin using the same. More particularly, in the method of oligomerizing an olefin, it is possible to minimize a total amount of polymers produced during a reaction and basically inhibit fouling of the polymers produced during the reaction onto an inner wall of a reactor by injecting a predetermined fouling inhibitor.

## Claims

### Claim 1

A method of oligomerizing an olefin, the method comprising: injecting a fouling inhibitor comprising a petroleum based wax into a reactor; injecting a catalyst composition into the reactor; and injecting the olefin into the reactor to perform an oligomerization reaction,
wherein the petroleum based wax is semi-solid or solid,
wherein the molecular weight of the petroleum based wax is 350 to 1000, and
wherein the petroleum based wax is one or more selected from petroleum jelly, paraffin wax, and microcrystalline wax.

### Claim 2 (depends on 1)

The method of claim 1, wherein the petroleum based wax has a hetero atom ratio of 0.0001 to 0.01 in each molecule.

### Claim 3 (depends on 1)

The method of claim 1, wherein the petroleum based wax is contained in a range of 0.05 to 10 wt % based on a total weight of a medium in the reactor.

### Claim 4 (depends on 1)

The method of claim 1, wherein the catalyst composition contains a main catalyst and a cocatalyst,
the main catalyst being a complex in which a transition metal and a hetero atom ligand represented by the following Chemical Formula 1 are coordinated with each other,
[Chemical Formula 1]
(R1)nA-B-C(R2)m,
wherein in Chemical Formula 1,
A and C are each independently selected from the group consisting of phosphorus, arsenic, antimony, oxygen, bismuth, sulfur, selenium, and nitrogen,
B is a linking group between A and C,
n and m are each independently integers determined by valences and an oxidation states of A and C, respectively, and
R1 and R2 are each independently selected from the group consisting of substituted or unsubstituted hydrocarbyl and substituted or unsubstituted heterohydrocarbyl, R1(s) are equal to or different from each other when n≥2, and R2(s) are equal to or different from each other when m≥2.

### Claim 5 (depends on 4)

The method of claim 4, wherein B is selected from an organic linking group including substituted or unsubstituted hydrocarbylene and substituted or unsubstituted heterohydrocarbylene; and an inorganic linking group including a single atom link.

### Claim 6 (depends on 4)

The method of claim 4, wherein the hetero atom ligand is represented by the following Chemical Formula 2,
[Chemical Formula 2]
wherein in Chemical Formula 2,
R11 to R14 are each independently selected from the group consisting of substituted or unsubstituted hydrocarbyl and substituted or unsubstituted heterohydrocarbyl, and
R15 and R16 are each independently substituted or unsubstituted hydrocarbyl, or are linked with each other by substituted or unsubstituted hydrocarbylene or substituted or unsubstituted heterohydrocarbylene to form a ring.

### Claim 7 (depends on 4)

The method of claim 4, wherein the cocatalyst is one or more selected from an organic aluminum compound and an organic boron compound.

### Claim 8 (depends on 1)

The method of claim 1, wherein the performing the oligomerization reaction is performed in a temperature range of 0 to 200° C.

### Claim 9 (depends on 1)

The method of claim 1, wherein the performing the oligomerization reaction is performed in a temperature range of 40 to 100° C.

### Claim 10 (depends on 1)

The method of claim 1, wherein the performing the oligomerization reaction is performed in a pressure range of 1 to 800 bar.

### Claim 11 (depends on 1)

The method of claim 1, wherein the olefin is ethylene, and 1-hexene, 1-octene, or a mixture thereof is selectively prepared.