US4144183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed branched and straight chain ester oils
Assignee: Henkel AG and Co KGaA
•
Filing: 1977-07-22
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Granted: 1979-03-13
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Expires: 1997-07-22
Abstract
Abstract Branched-chain aliphatic ester oils comprising full esters of branched-chain aliphatic polyols having from 2 to 6 hydroxyl groups with mixtures of saturated, branched-chain, aliphatic monocarboxylic acids having from 14 to 22 carbon atoms and saturated straight-chain aliphatic monocarboxylic acids having from 8 to 10 carbon atoms, as well as their use alone, or as mixture components, as lubricants or hydraulic fluids.
Inventors
- 👤 Karlheinz Koch
- 👤 Hermann Kroke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:07
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/08; C10M105/32; C10M105/38; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/109; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/06; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
178 words
A branched-chain aliphatic ester oil consisting essentially of a full ester of a branched-chain aliphatic polyol having from 2 to 6 primary hydroxyl groups selected from the group consisting of alkanepolyols having from 3 to 6 carbon atoms and alkoxyalkanepolyols having from 6 to 12 carbon atoms with a mixture of (A) α-branched-chain alkanoic acids having the formula ##STR9## wherein R 1 and R 2 are alkyl having from 1 to 19 carbon atoms and the total number of carbon atoms in the acid is from 14 to 22, selected from the group consisting of (1) acids derived from the oxidation of α-branched alcohols formed from normal alcohols by the Guerbet synthesis and (2) an acid of the formula ##STR10## and (B) straight-chain alkanoic acids having from 8 to 10 carbon atoms, in such a ratio wherein at least one of said primary hydroxyl groups is on average at least 80% esterified by said α-branched-chain alkanoic acids and at least one of said primary hydroxyl groups is on average at least 40% esterified by said straight-chain alkanoic acids.
Claim 2
Dependent Claim
178 words
A branched-chain aliphatic ester oil consisting essentially of a full ester of a branched-chain aliphatic polyol having from 2 to 6 primary hydroxyl groups selected from the group consisting of alkanepolyols having from 3 to 6 carbon atoms and alkoxyalkanepolyols having from 6 to 12 carbon atoms with a mixture of (A) α-branched-chain alkanoic acids having the formula ##STR9## wherein R 1 and R 2 are alkyl having from 1 to 19 carbon atoms and the total number of carbon atoms in the acid is from 14 to 22, selected from the group consisting of (1) acids derived from the oxidation of α-branched alcohols formed from normal alcohols by the Guerbet synthesis and (2) an acid of the formula ##STR10## and (B) straight-chain alkanoic acids having from 8 to 10 carbon atoms, in such a ratio wherein at least one of said primary hydroxyl groups is on average at least 80% esterified by said α-branched-chain alkanoic acids and at least one of said primary hydroxyl groups is on average at least 40% esterified by said straight-chain alkanoic acids.
Claim 3
Dependent Claim
15 words
The ester oil of claim 1 wherein said α-branched alkanoic acid has 16 carbon atoms.
Claim 4
Dependent Claim
30 words
The ester oil of claim 2 wherein said α-branched C 16 -alkanoic acid is an isopalmitic acid obtained by oxidation of the 2-hexyl-decanol formed from n-octanol by the Guerbet synthesis.
Claim 5
Dependent Claim
22 words
The ester oil of claim 1 wherein said straight-chain alkanoic acid is a mixture of acids having 8 to 10 carbon atoms.
Claim 6
Dependent Claim
21 words
The ester oil of claim 1 wherein said polyol is a branched-chain alkanepolyol having only 2 to 4 primary hydroxyl groups.
Claim 7
Dependent Claim
11 words
The ester oil of claim 5 wherein said alkanepolyol is trimethylolpropane.
Claim 8
Dependent Claim
11 words
The ester oil of claim 5 wherein said alkanepolyol is pentaerythritol.
Claim 9
Dependent Claim
43 words
The ester oil of claim 1 wherein the ratio of branched-chain acids to straight-chain acids is such that at least one primary hydroxyl group is esterified with said branched-chain acids and at least one primary hydroxyl group is esterified with said straight-chain acids.
Claim 10
Dependent Claim
21 words
Lubricating and hydraulic fluid compositions containing from 20% to 100% by weight of at least one ester oil of claim 1.
Claim 11
Dependent Claim
50 words
In the process of facilitating the motion of one solid over the surface of another solid by providing a thin film of a lubricant between the surfaces of said solids in frictional contact, the improvement consisting essentially of utilizing at least one ester oil of claim 1 as said lubricant.
Claim 12
Dependent Claim
33 words
The ester oil of claim 1 being the monoisopalmitic acid-di-n-C 8-10 alkanoic acid ester of trimethylolpropane, said isopalmitic acid being obtained by the oxidation of 2-hexyldecanol formed from n-octanol by the Guerbet synthesis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |