Patents
US 9067846 B2: Process for producing styrene-, methylstyrene- and ethylbenzene-free C6-C9 aromatic hydrocarbon blends
- Granted
- 2015-06-30
- Filed
- 2013-06-07 application 13986804
- Type
- Utility · 23 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Various substantially styrene-, methylstyrene- and ethylbenzene-free C6-C9 aromatic hydrocarbon blends are produced from a hydrocarbon feed stream containing C5-C9 aromatic hydrocarbons including styrene, methylstyrene and sulphur compounds by first separating the stream into a distillate containing C5-C7 hydrocarbons, and a bottoms fraction containing C8 and C9 hydrocarbons; and converting the styrene and methylstyrene to their corresponding ethers by reacting with a C1-C3 lower alcohol in the presence of a selective acidic etherification catalyst. The effluent may be sent to a gasoline pool for blending or the effluent is separated by distillation into an ether stream and either a C8 or a C8-C9 aromatic hydrocarbon rich stream. The C5-C7 distillate is hydrogenated.
Source: PVGPATDIS, file of 2026-04-10 (ipg150630.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| AMT International Inc. 26 patents | US company or organization | Plano, TX | AMT INTERNATIONAL, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
| CPC CORPORATION, TAIWAN 57 patents | Foreign company or organization | Taipei, TW | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Karl T. Chuang | Edmonton, CA | 19 | PVGPATDIS, file of 2026-04-10 | |
| Tzong-Bin Lin | Kaohsiung, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Cheng-Tsung Hong | Kaohsiung, TW | 11 | PVGPATDIS, file of 2026-04-10 | |
| Yung-Sheng Ho | Kaohsiung, TW | 6 | PVGPATDIS, file of 2026-04-10 | |
| Kuang-Yeu Wu | Plano, TX | 22 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C07C | Acyclic or carbocyclic compounds | C07C5/03 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.