US4156762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing light-colored clear petroleum resins
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1978-05-22
•
Granted: 1979-05-29
•
Expires: 1998-05-22
Abstract
Abstract In the production of petroleum resins by polymerizing an unsaturated hydrocarbon-containing fraction having a boiling point ranging from -20 DEG to 200 DEG C. at -50 DEG to 100 DEG C., an improvement for producing light-colored clear petroleum resins which comprises using an aluminum chloride/fatty acid ester/aromatic hydrocarbon complex solution.
Inventors
- 👤 Ken-ichi Kudo
- 👤 Yoshihiko Kitagawa
- 👤 Hideyuki Kuribayashi
- 👤 Seiko Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:53
CPC Classifications
C; C08; C08F; C08F240/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
In the production of petroleum resins by polymerizing an unsaturated hydrocarbon-containing fraction having a boiling point ranging from -20° C. to 200° C. at -50° to 100° C., an improvement for producing light-colored clear petroleum resins which comprises using an aluminum chloride/fatty acid ester/aromatic hydrocarbon complex solution in an amount of 0.3 to 5% by weight (converted to aluminum chloride basis) based on the weight of said fraction, said complex solution being a reaction product of (A) aluminum chloride, (B) a fatty acid ester of the formula, C m H 2m+1 COOC n H 2n+1 (wherein m is an integer of 0 to 10 and n is an integer of 1 to 5), and (C) aromatic hydrocarbon, at a temperature of -30° to 70° C., at a molar ratio (A):(B):(C) of 1:0.25 to 0.75:1.0 to 2.4.
Claim 2
Dependent Claim
136 words
In the production of petroleum resins by polymerizing an unsaturated hydrocarbon-containing fraction having a boiling point ranging from -20° C. to 200° C. at -50° to 100° C., an improvement for producing light-colored clear petroleum resins which comprises using an aluminum chloride/fatty acid ester/aromatic hydrocarbon complex solution in an amount of 0.3 to 5% by weight (converted to aluminum chloride basis) based on the weight of said fraction, said complex solution being a reaction product of (A) aluminum chloride, (B) a fatty acid ester of the formula, C m H 2m+1 COOC n H 2n+1 (wherein m is an integer of 0 to 10 and n is an integer of 1 to 5), and (C) aromatic hydrocarbon, at a temperature of -30° to 70° C., at a molar ratio (A):(B):(C) of 1:0.25 to 0.75:1.0 to 2.4.
Claim 3
Dependent Claim
18 words
A process according to claim 1 wherein said unsaturated hydrocarbon-containing fraction may be mixed with styrenes or pinenes.
Claim 4
Dependent Claim
37 words
A process according to claim 2 wherein said unsaturated hydrocarbon-containing fraction is an unsaturated hydrocarbon-containing C 4 -C 5 fraction having a boiling point ranging from -20° to 70° C. produced on cracking or reforming of petroleum.
Claim 5
Dependent Claim
35 words
A process according to claim 1 wherein said unsaturated hydrocarbon-containing fraction is an unsaturated hydrocarbon-containing C 5 fraction having a boiling point ranging from 0° to 70° C. produced on cracking or reforming of petroleum.
Claim 6
Dependent Claim
24 words
A process according to claim 1 wherein said fatty acid ester is C 1 -C 5 alkyl esters of acetic acid or propionic acid.
Claim 7
Dependent Claim
28 words
A process according to claim 1 wherein said aromatic hydrocarbon is a compound selected from the group consisting of toluene, ethylbenzene, xylene and mesitylene, or a mixture thereof.
Claim 8
Dependent Claim
17 words
A process according to claim 6 wherein said aromatic hydrocarbon is a mixture of ethylbenzene and xylene.
References Cited (Backward Citations)
US3639366A
Cited
US3709854A
Cited
US3763125A
Cited
US3817953A
Cited
US3880820A
Cited
US3929747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |