Patent US2047525A successfully refreshed from Google Patents.
US4287074A
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US
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Sec-ylbiphenyl composition and process for preparing the same
Assignee: Koch Industries Inc
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Filing: 1980-04-28
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Granted: 1981-09-01
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Expires: 2000-04-28
Abstract
Abstract A water-white, essentially odorless liquid useful as a dieletric oil and as a dye solvent, particularly for a carbonless paper solvent, consisting essentially of about 82% to about 88% by weight of mono-sec-butylbiphenyl and about 12% to about 18% of di-sec-butylbiphenyl prepared by reacting highly pure 1-butene or 2-butene with biphenyl at a mol ratio of butene to biphenyl of from about 0.5 to about 0.9 and at a temperature of about 250 DEG F. to about 475 DEG F. in the presence of an aluminum chloride catalyst, distilling the reaction product under vacuum to remove unreacted biphenyl and distilling off the product mixture at a temperature between about 370 DEG F. and about 440 DEG F. at 30 mm Hg. pressure or the equivalent thereof.
Inventors
- 👤 Harold W. Earhart
- 👤 Donald F. Rugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/12; C07C15/14; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22; B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; B41M5/1655; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
36 words
A water-white, essentially odorless liquid composition useful as a dielectric oil and as a dye solvent, consisting essentially of about 82% to about 88% by weight of mono-sec-butylbiphenyl and about 12% to about 18% of di-secbutylbiphenyl.
Claim 2
Dependent Claim
36 words
A water-white, essentially odorless liquid composition useful as a dielectric oil and as a dye solvent, consisting essentially of about 82% to about 88% by weight of mono-sec-butylbiphenyl and about 12% to about 18% of di-secbutylbiphenyl.
Claim 3
Dependent Claim
19 words
The composition of claim 1 consisting essentially of about 85% of mono-sec-butyl biphenyl and about 15% of di-sec-butyl biphenyl.
Claim 4
Dependent Claim
122 words
A process for preparing a water-white, essentially odorless liquid product useful as a dielectric oil and as a dye solvent, consisting essentially of about 82% to about 88% by weight of mono-sec-butylbiphenyl and about 12% to about 18% of di-sec-butylbiphenyl which comprises reacting highly pure 1-butene or 2-butene with biphenyl at a mol ratio of butene to biphenyl of from about 0.5 to about 0.9 and at a temperature between about 250° and about 475° F. in the presence of an aluminum chloride catalyst, distilling the reaction product under vacuum to remove unreacted biphenyl and thereafter distilling off the liquid product mixture at a temperature between about 370° F. and about 440° F. at 300 mm Hg. pressure or the equivalent thereof.
Claim 5
Dependent Claim
122 words
A process for preparing a water-white, essentially odorless liquid product useful as a dielectric oil and as a dye solvent, consisting essentially of about 82% to about 88% by weight of mono-sec-butylbiphenyl and about 12% to about 18% of di-sec-butylbiphenyl which comprises reacting highly pure 1-butene or 2-butene with biphenyl at a mol ratio of butene to biphenyl of from about 0.5 to about 0.9 and at a temperature between about 250° and about 475° F. in the presence of an aluminum chloride catalyst, distilling the reaction product under vacuum to remove unreacted biphenyl and thereafter distilling off the liquid product mixture at a temperature between about 370° F. and about 440° F. at 300 mm Hg. pressure or the equivalent thereof.
Claim 6
Dependent Claim
38 words
The process of claim 3 wherein the ratio of butene to biphenyl is about 0.75 and the liquid product is distilled over a temperature range of from about 370° F. to about 437° F. at 30 mm Hg.
Claim 7
Dependent Claim
20 words
The process of claim 4 wherein the catalyst used is a complex of AlCl 3 with toluene and methyl chloride.
Claim 8
Dependent Claim
120 words
A process for preparing a water-white, essentially odorless liquid product useful as a dielectric oil and as a dye solvent, consisting essentially of about 85% by weight of mono-sec-butylbiphenyl and about 15% of de-secbutylbiphenyl prepared which comprises reacting highly pure 1-butene or 2-butene, or their admixture with biphenyl at a mol ratio of butene to biphenyl of from about 0.75 and at a temperature of about 250° F. in the presence of an aluminum chloride complex catalyst, distilling the reaction product under vacuum at a temperature between about 296° and 340° F. to remove unreacted biphenyl and thereafter distilling off the liquid product mixture at a temperature between about 370° and about 440° F. at about 30 mm Hg pressure.
Claim 9
Dependent Claim
120 words
A process for preparing a water-white, essentially odorless liquid product useful as a dielectric oil and as a dye solvent, consisting essentially of about 85% by weight of mono-sec-butylbiphenyl and about 15% of de-secbutylbiphenyl prepared which comprises reacting highly pure 1-butene or 2-butene, or their admixture with biphenyl at a mol ratio of butene to biphenyl of from about 0.75 and at a temperature of about 250° F. in the presence of an aluminum chloride complex catalyst, distilling the reaction product under vacuum at a temperature between about 296° and 340° F. to remove unreacted biphenyl and thereafter distilling off the liquid product mixture at a temperature between about 370° and about 440° F. at about 30 mm Hg pressure.
References Cited (Backward Citations)
US2172391A
Cited
US2264448A
Cited
US2837727A
Cited
DE2142173A1
Cited
US3732141A
Cited
US3846331A
Cited
US4071469A
Cited
US4085949A
Cited
US4118335A
Cited
US4054937A
Cited
US4054937B1
Cited
US4119555A
Cited
US4177156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |