US3844931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing special solvent
Assignee: JGC Corp
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Filing: 1972-06-23
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Granted: 1974-10-29
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Expires: 1992-06-23
Abstract
Abstract The present invention relates to the method of manufacturing a special solvent applicable to organic compounds having functional groups so that they can serve as dyes, perfumes, insecticides, etc., in which hydrocarbons - which mainly comprise fractions having boiling points in the range of 200* to 280* C and the index number therein expressed by the formula delta + 0.625 bp - 447 (wherein delta represents the specific dispersion at 20* C; bp stands for the boiling point in *C) is more than -100 - are made to react with an olefin in the presence of an acid catalyst, thereby obtaining such fractions having said index number in the range of -100 to 40 and having a boiling point of 260* C and above.
Inventors
- 👤 T Ishiguro
- 👤 S Gomi
- 👤 M Takahaski
- 👤 A Okagami
- 👤 S Igeta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:13
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/02; B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; B41M5/1655; C; C10; C10M; C10M2205/00; C10M2205/22; C10M2215/00; C10M2215/18; C10M2215/182
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A PROCESS FOR PRODUCING AN ALKYLATED HYDROCARBON SUITABLE AS A SOLVENT WHICH COMPRISES, REACTING (A) HYDROCARBON STARTING MATERIAL CONSISTING MAINLY OF HYDROCARBONS BOILING IN THE RANGE OF 200*C TO 280*C, AN INDEX NUMBER OF MORE THAN -100 AND A MAXIMUM ABSORPTION WAVE-LENGTH, AMAX, OF THE UTRAVIOLET ABSORPTION SPECTRUM OF 220 TO 230 MU, WHEREIN INDEX NUMBER EQUALS $+0.625B.P. -477, AND $ REPRESENTS THE SPECIFIC DISPERSION AT 20*C AND B.P. IS THE BOILING POINT IN *C., WITH (B) AN OLEFIN HAVING 2 TO 9 CARBON ATOMS, AT A TEMPERATURE IN THE RANGE OF 40* TO 380*, AT A PRESSURE OF 0 TO 150 KG/CM2 GAUGE AND A LIQUID RESIDENCE TIME OF 0.1 TO 5.0 HOURS, IN THE PRESENCE OF (C) AN ACID CATALYST UNTIL FROM 0.5 TO 2.0 MOLES OF SAID OLEFIN IS REACTED PER ONE MOLE OF SAID STARTING MATERIAL, TO FORM AN ALKYLATED REACTION PRODUCT, RECOVERING FROM SAID REACTION PRODUCT BY DISTILLATION AN ALKYLATED HYDROCARBON FRACTION HAVING SAID INDEX NUMBER IN THE RANGE OF -100 TO 40 AND HAVING A BOILING RANGE OF 260* TO 320*C.
Claim 2
Dependent Claim
177 words
A PROCESS FOR PRODUCING AN ALKYLATED HYDROCARBON SUITABLE AS A SOLVENT WHICH COMPRISES, REACTING (A) HYDROCARBON STARTING MATERIAL CONSISTING MAINLY OF HYDROCARBONS BOILING IN THE RANGE OF 200*C TO 280*C, AN INDEX NUMBER OF MORE THAN -100 AND A MAXIMUM ABSORPTION WAVE-LENGTH, AMAX, OF THE UTRAVIOLET ABSORPTION SPECTRUM OF 220 TO 230 MU, WHEREIN INDEX NUMBER EQUALS $+0.625B.P. -477, AND $ REPRESENTS THE SPECIFIC DISPERSION AT 20*C AND B.P. IS THE BOILING POINT IN *C., WITH (B) AN OLEFIN HAVING 2 TO 9 CARBON ATOMS, AT A TEMPERATURE IN THE RANGE OF 40* TO 380*, AT A PRESSURE OF 0 TO 150 KG/CM2 GAUGE AND A LIQUID RESIDENCE TIME OF 0.1 TO 5.0 HOURS, IN THE PRESENCE OF (C) AN ACID CATALYST UNTIL FROM 0.5 TO 2.0 MOLES OF SAID OLEFIN IS REACTED PER ONE MOLE OF SAID STARTING MATERIAL, TO FORM AN ALKYLATED REACTION PRODUCT, RECOVERING FROM SAID REACTION PRODUCT BY DISTILLATION AN ALKYLATED HYDROCARBON FRACTION HAVING SAID INDEX NUMBER IN THE RANGE OF -100 TO 40 AND HAVING A BOILING RANGE OF 260* TO 320*C.
Claim 3
Dependent Claim
76 words
A process according to claim 1, wherein said hydrocarbon starting material is a member selected from the group consisting of the byproduced heavy oil obtained from high temperature cracking of naphtha or crude oil, the byproduced heavy oil obtained in the manufacturing of benzene, or naphthalene, by the dealkylation reaction, the residual fractions obtained by the catalytic reforming reaction of naphtha, or kerosene, and the light cycle oil obtained by the catalytic cracking of gas oil.
Claim 4
Dependent Claim
60 words
A process according to claim 1, wherein said acid catalyst is a solid acid catalyst selected from the group consisting of silica-alumina, crystalline aluminosilicate, silver-oxide silicaalumina, silica-magnesia, alumina-boriA, solid phosphoric acid and nickel oxide-silica and having an acid content in the range of 0.01 to 10 meq./gr. as measured by the amine titration method employing the indicator of pKa 0.8.
Claim 5
Dependent Claim
26 words
A process according to claim 1, wherein said olefin is a member selected from the group consisting of ethylene, propylene, butylene, cyclopentene, styrene, and methyl styrene.
Claim 6
Dependent Claim
44 words
A process according to claim 1, including the steps of recovering from said reaction product by distillation (1) an alkylated hydrocarbon fraction having a boiling range of 240* to 260*C, and (2) an alkylated hydrocarbon fraction having a boiling range of 320* to 350*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |