Patent US4604491A successfully refreshed from Google Patents.
US4604491A
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Synthetic oils
Assignee: Ingredion Inc
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Filing: 1984-11-26
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Granted: 1986-08-05
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Expires: 2004-11-26
Abstract
Abstract Synthetic base oils for functional fluids and greases are provided comprising a mixture of monoalkylated naphthalenes and polyalkylated naphthalenes, said naphthalenes represented by the formula: ##STR1## wherein the R' groups are independently selected from H and methyl, the monoalkylated naphthalenes have three R groups which are H and one R group which is a 12-26 carbon alkyl, the polyalkylated naphthalenes have from two to four R groups which are 12-26 carbon alkyl and any remainder R groups H, and the weight ratio of monoalkylated naphthalenes to polyalkylated naphthalenes is from 5:95 to 70:30 when the average alkyl group is C 12 -C 16 and from 5:95 to 99:1 when the average alkyl group is C 17 -C 26 . In the preferred mixture, the polyalkylated naphthalenes have a numerical ratio of α/β substitution of from 50/50 to 10/90 when the R' groups are both H.
Inventors
- 👤 Hans Dressler
- 👤 Albert A. Meilus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:26
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/02; C10M105/06; C10M127/00; C10M127/06; C10M2203/00; C10M2203/06
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
150 words
A synthetic base oil for functional fluids and greases comprising a mixture of monoalkylated naphthalenes and polyalkylated naphthalenes, said naphthalenes represented by the formula: ##STR3## wherein the R' groups are independently selected from H and methyl, the monoalkylated naphthalenes have three R groups which are H and one R group which is a 12-26 carbon alkyl, the polyalkylated naphthalenes have from two to four R groups which are 12-26 carbon alkyl and any remainder groups H, the weight ratio of monoalkylated naphthalenes to polyalkylated naphthalenes is from 5:95 to 70:30 when the average alkyl group is C 12 -C 16 and from 5:95 to 99:1 when the average alkyl group is C 17 -C 26 and the oil has a viscosity at 210° F. between 61 and 88 SUS, a viscosity index between 105 and 136, and a flash point (COC=Cleveland open cup) of between 508° F. and 560° F.
Claim 2
Dependent Claim
150 words
A synthetic base oil for functional fluids and greases comprising a mixture of monoalkylated naphthalenes and polyalkylated naphthalenes, said naphthalenes represented by the formula: ##STR3## wherein the R' groups are independently selected from H and methyl, the monoalkylated naphthalenes have three R groups which are H and one R group which is a 12-26 carbon alkyl, the polyalkylated naphthalenes have from two to four R groups which are 12-26 carbon alkyl and any remainder groups H, the weight ratio of monoalkylated naphthalenes to polyalkylated naphthalenes is from 5:95 to 70:30 when the average alkyl group is C 12 -C 16 and from 5:95 to 99:1 when the average alkyl group is C 17 -C 26 and the oil has a viscosity at 210° F. between 61 and 88 SUS, a viscosity index between 105 and 136, and a flash point (COC=Cleveland open cup) of between 508° F. and 560° F.
Claim 3
Dependent Claim
15 words
The base oil of claim 1 wherein a mixture of different polyalkylated naphthalenes is employed.
Claim 4
Dependent Claim
15 words
The base oil of claim 1 wherein a mixture of different monoalkylated naphthalenes is employed.
Claim 5
Dependent Claim
31 words
The base oil of claim 1 wherein the ratio of monoalkylated naphthalene to polyalkylated naphthalene is from 5:95 to 30:70 and the alkyl groups are C 12 to C 16 .
Claim 6
Dependent Claim
31 words
The base oil of claim 1 wherein the ratio of monoalkylated naphthalene to polyalkylated naphthalene is from 15:85 to 99:1 when the alkyl groups are C 17 to C 26 .
Claim 7
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of two 16-carbon alkyl groups.
Claim 8
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of three 14-carbon alkyl groups.
Claim 9
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 3.6 14-carbon alkyl groups.
Claim 10
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 1.5 18-carbon alkyl groups.
Claim 11
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.8 18-carbon alkyl groups.
Claim 12
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.0 16-carbon alkyl groups.
Claim 13
Dependent Claim
18 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.1 16-carbon alkyl groups.
Claim 14
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated napthalene has an average of 3.0 alkyl groups with 12-14 carbon atoms each.
Claim 15
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.4 alkyl groups with 12-26 carbon atoms each.
Claim 16
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.3 alkyl groups with 14-16 carbon atoms each.
Claim 17
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.4 alkyl groups with 14-18 carbon atoms each.
Claim 18
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.0 alkyl groups with 14-18 carbon atoms each.
Claim 19
Dependent Claim
21 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.0 alkyl groups 15-20 carbon atoms each.
Claim 20
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.2 alkyl groups with 16-18 carbon atoms each.
Claim 21
Dependent Claim
22 words
The base oil of claim 1 wherein the polyalkylated naphthalene has an average of 2.0 alkyl groups with 18-20 carbon atoms each.
Claim 22
Dependent Claim
29 words
The base oil of claim 1 wherein the polyalkylated naphthalenes have a numerical ratio of α/β substitution of from 50/50 to 10/90 and the R' groups are both H.
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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |