US4584115A
Expired / Lapsed
US
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Method of preparing boron-containing compositions useful as lubricant additives
Assignee: Lubrizol Corp
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Filing: 1982-09-30
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Granted: 1986-04-22
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Expires: 2002-09-30
Abstract
Abstract Reaction products of boric acid or boron trioxide with an epoxide having at least 8 carbon atoms (especially a straight-chain aliphatic epoxide) are useful anti-wear, friction modifying and rust inhibiting additives for lubricants. They are particularly useful in lubricants containing relatively large amounts of basic alkaline earth metal phenates or salicylates and/or free hydroxy group-containing alkenylsuccinic acid ester dispersants.
Inventors
- 👤 Kirk E. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:10
CPC Classifications
C; C10; C10M; C10M163/00; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10M139/00; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/06; C10M2227/061; C10M2227/062; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/06; C10N2040/08; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/20; C10N2040/25; C10N2040/251; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/26; C10N2040/28
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
143 words
A method for preparing an oil-soluble boron-containing composition of matter which comprises reacting, at a temperature from about 80° C. to about 250° C. (A) at least one of boric acid or boron trioxide with (B) at least one epoxide having the formula ##STR3## wherein each of R 1 , R 2 , R 3 and R 4 is hydrogen or an aliphatic radical, or any two thereof together with the epoxy carbon atom or atoms to which they are attached, form a cyclic radical, said epoxide containing at least 8 carbon atoms, wherein the molar ratio of reagents A and B is between about 1:0.25 and about 1:4, in the presence of a minor amount of a heel of a previously obtained oil-soluble boron-containing composition prepared by reagents A and B in a molar ratio of between about 1:0.25 and about 1:4.
Claim 2
Independent Claim
143 words
A method for preparing an oil-soluble boron-containing composition of matter which comprises reacting, at a temperature from about 80° C. to about 250° C. (A) at least one of boric acid or boron trioxide with (B) at least one epoxide having the formula ##STR3## wherein each of R 1 , R 2 , R 3 and R 4 is hydrogen or an aliphatic radical, or any two thereof together with the epoxy carbon atom or atoms to which they are attached, form a cyclic radical, said epoxide containing at least 8 carbon atoms, wherein the molar ratio of reagents A and B is between about 1:0.25 and about 1:4, in the presence of a minor amount of a heel of a previously obtained oil-soluble boron-containing composition prepared by reagents A and B in a molar ratio of between about 1:0.25 and about 1:4.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein the reagent A being reacted is the same as the reagent A used in the preparation of the heel.
Claim 4
Dependent Claim
29 words
The method of claim 1 wherein th epoxide of reagent B being reacted is the same as the epoxide of reagent B used in the preparation of the heel.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein the reagents A and B being reacted are the same as the reagents A and B used in a preparation of the heel.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the two molar ratios are the same.
Claim 7
Dependent Claim
40 words
The method according to claim 1 wherein each of R 1 , R 2 , R 3 and R 4 is hydrogen or an aliphatic radical, at least one thereof being an aliphatic radical containing at least 6 carbon atoms.
Claim 8
Dependent Claim
34 words
The method according to claim 6 wherein R 1 is an alkyl radical containing from about 10 to about 20 carbon atoms and R 2 , R 3 and R 4 are each hydrogen.
Claim 9
Dependent Claim
12 words
The method according to claim 7 wherein reagent A is orthoboric acid.
Claim 10
Dependent Claim
13 words
The method according to claim 8 wherein R 1 is a straight-chain radical.
Claim 11
Dependent Claim
13 words
The method according to claim 9 wherein R 1 is the tetradecyl radical.
Claim 12
Independent Claim
26 words
The method of any one of claims 2-4, 5-10 and 1 wherein reagent B is added gradually to a mixture of reagent A and the heel.
Claim 13
Dependent Claim
28 words
The method of claim 11 wherein the mixture of reagent A and the heel is heated to remove any water present prior to the addition of reagent B.
Claim 14
Dependent Claim
23 words
The method of claim 12 wherein the mixture of reagent A and the heel also contains a catalytic amount of an alkaline reagent.
Claim 15
Dependent Claim
13 words
The method of claim 13 wherein the alkaline reagent is an aliphatic amine.
Claim 16
Dependent Claim
13 words
The method of claim 13 wherein the alkaline reagent is a tertiary amine.
Claim 17
Dependent Claim
11 words
The method of claim 15 wherein the tertiary amine is tri-n-butylamine.
Claim 18
Independent Claim
28 words
The method according to any one of claims 2-4, 5-10 and 1 wherein the reaction is effected in the presence of a catalytic amount of an alkaline reagent.
Claim 19
Dependent Claim
14 words
The method according to claim 17 wherein the alkaline reagent is an aliphatic amine.
Claim 20
Dependent Claim
13 words
The method according to claim 18 wherein the amine is a tertiary amine.
Claim 21
Dependent Claim
11 words
The method according to claim 19 wherein the amine is tri-n-butylamine.
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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |