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US4514315A
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Aluminum corrosion inhibitor comprising alkylene-silane graft copolymer
Assignee: Prestone Products Corp USA
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Filing: 1983-06-27
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Granted: 1985-04-30
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Expires: 2003-06-27
Abstract
Abstract An aluminum corrosion inhibitor composition comprising an aqueous and/or alcohol solution of an alkylene silane grafted polyether together with a method for using such composition.
Inventors
- 👤 William N. Matulewicz
- 👤 Paul H. Mohr
- 👤 Paul L. Matlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:12
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/173; C09; C09K; C09K5/00; C09K5/20
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
196 words
An aluminum corrosion inhibitor composition concentrate comprising: (a) alcohol or water or mixtures thereof, and (b) an ethylenically unsaturated alkylene silane monomer grafted onto a polyalkylene oxide polymer comprising the reaction product of said ethylenically unsaturated grafting silane monomer and a base polymer consisting of a poly(oxyalkylene) compound of the formula: R"((OC.sub.n H.sub.2n).sub.z OR').sub.a wherein R' is a member selected from the group consisting of a hydrocarbon radical, a hydrogen atom, or an acyl radical and R" is a member selected from the group consisting of a hydrocarbon radical, a hydrogen atom, an amine-containing radical, or an acyl radical, a is an integer having a value of 1 to about 4, n has a value of 2 to 4 inclusive, z is an integer having a value of from 4 to 2300 inclusive, said grafted polymer having a percent silane graft of up to about 60%, said base polymer having a number average molecular weight of between about 200 and about 100,000, and wherein the amount of component (b) is between greater than about 0.01 wt. % and about 20 wt. % based on the total amount of component (a) plus component (b) in said concentrate.
Claim 2
Dependent Claim
196 words
An aluminum corrosion inhibitor composition concentrate comprising: (a) alcohol or water or mixtures thereof, and (b) an ethylenically unsaturated alkylene silane monomer grafted onto a polyalkylene oxide polymer comprising the reaction product of said ethylenically unsaturated grafting silane monomer and a base polymer consisting of a poly(oxyalkylene) compound of the formula: R"((OC.sub.n H.sub.2n).sub.z OR').sub.a wherein R' is a member selected from the group consisting of a hydrocarbon radical, a hydrogen atom, or an acyl radical and R" is a member selected from the group consisting of a hydrocarbon radical, a hydrogen atom, an amine-containing radical, or an acyl radical, a is an integer having a value of 1 to about 4, n has a value of 2 to 4 inclusive, z is an integer having a value of from 4 to 2300 inclusive, said grafted polymer having a percent silane graft of up to about 60%, said base polymer having a number average molecular weight of between about 200 and about 100,000, and wherein the amount of component (b) is between greater than about 0.01 wt. % and about 20 wt. % based on the total amount of component (a) plus component (b) in said concentrate.
Claim 3
Dependent Claim
26 words
The concentrate of claim 1 to which additionally is added: (c) ammonium hydroxide, alkali metal hydroxides, or alkaline earth metal hydroxides; or amines, or mixtures thereof.
Claim 4
Dependent Claim
18 words
The concentrate of claim 2 wherein component (c) is sodium or potassium hydroxide or triethanolamine, or mixtures thereof.
Claim 5
Dependent Claim
30 words
The concentrate of claim 1 wherein component (b) is soluble in component (a) to the extent of at least about 0.01 weight percent based on the weight of the concentrate.
Claim 6
Dependent Claim
11 words
The concentrate of claim 4 wherein component (a) is ethylene glycol.
Claim 7
Dependent Claim
37 words
The concentrate of claim 2 wherein the reaction product of component (b) and component (c) is soluble in component (a) to the extent of at least about 0.01 weight percent based on the weight of the concentrate.
Claim 8
Dependent Claim
20 words
The concentrate of claim 2 wherein the reaction product of component (b) and component (c) is insoluble in component (a).
Claim 9
Dependent Claim
13 words
The concentrate of claim 1 wherein component (b) is insoluble in component (a).
Claim 10
Dependent Claim
39 words
The concentrate of claim 1 wherein component (a) is ethylene glycol, said base polymer is a poly(oxyethylene-oxypropylene) compound having a number average molecular weight between 200 and 10,000, and said percent graft is between about 1% and about 20%.
Claim 11
Dependent Claim
190 words
An aluminum corrosion inhibitor composition comprising: (a) alcohol or water or mixtures thereof, and (b) ethylenically unsaturated alkylene silane monomer grafted onto a polyalkylene oxide comprising the reaction product of said ethylenically unsaturated grafting silane monomer and a base polymer consisting of a poly(oxyalkylene) compound of the formula: R"((OC.sub.n H.sub.2n).sub.z OR').sub.a wherein R' is a member selected from the group consisting of a hydrocarbon, a hydrogen atom, or an acyl radical and R" is a member selected from the group consisting of a hydrocarbon a hydrogen atom, an amine-containing, or an acyl radical, a is an integer having a value of 1 to about 4, n has a value of 2 to 4 inclusive, z is an integer having a value of from 4 to 2300 inclusive, said grafted polymer having a percent silane graft of up to about 60%, said base polymer having a number average molecular weight of between about 200 and about 100,000 and wherein the amount of component (b) is between greater than about 0.01 wt. % and about 20 wt. % based on the total amount of component (a) plus component (b) in said concentrate.
Claim 12
Dependent Claim
190 words
An aluminum corrosion inhibitor composition comprising: (a) alcohol or water or mixtures thereof, and (b) ethylenically unsaturated alkylene silane monomer grafted onto a polyalkylene oxide comprising the reaction product of said ethylenically unsaturated grafting silane monomer and a base polymer consisting of a poly(oxyalkylene) compound of the formula: R"((OC.sub.n H.sub.2n).sub.z OR').sub.a wherein R' is a member selected from the group consisting of a hydrocarbon, a hydrogen atom, or an acyl radical and R" is a member selected from the group consisting of a hydrocarbon a hydrogen atom, an amine-containing, or an acyl radical, a is an integer having a value of 1 to about 4, n has a value of 2 to 4 inclusive, z is an integer having a value of from 4 to 2300 inclusive, said grafted polymer having a percent silane graft of up to about 60%, said base polymer having a number average molecular weight of between about 200 and about 100,000 and wherein the amount of component (b) is between greater than about 0.01 wt. % and about 20 wt. % based on the total amount of component (a) plus component (b) in said concentrate.
Claim 13
Dependent Claim
23 words
The composition of claim 10 to which additionally is added: (c) ammonium hydroxide, alkali metal hydroxides, or alkaline earth metal hydroxides; or amines.
Claim 14
Dependent Claim
15 words
The composition of claim 11 wherein component (c) is sodium or potassium hydroxide or triethanolamine.
Claim 15
Dependent Claim
29 words
The composition of claim 10 wherein component (b) is soluble in component (a) to the extent at least about 0.01 weight percent based on the weight of the composition.
Claim 16
Dependent Claim
11 words
The composition of claim 13 wherein component (a) is ethylene glycol.
Claim 17
Dependent Claim
37 words
The composition of claim 11 wherein the reaction product of component (b) and component (c) is soluble in component (a) to the extent of at least about 0.01 weight percent based on the weight of the composition.
Claim 18
Dependent Claim
20 words
The composition of claim 12 wherein the reaction product of component (b) and component (c) is insoluble in component (a).
Claim 19
Dependent Claim
13 words
The composition of claim 11 wherein component (b) is insoluble in component (a).
Claim 20
Dependent Claim
39 words
The composition of claim 10 wherein component (a) is ethylene glycol, said base polymer is a poly(oxyethylene-oxypropylene) compound having a number average molecular weight between 200 and 10,000, and said percent graft is between about 1% and about 20%.
Claim 21
Independent Claim
203 words
A method for providing aluminum-corrosion inhibition in an aluminum component heat transfer system which comprises filling said system with a composition comprising: (a) alcohol or water or mixtures thereof, and (b) an ethylenically unsaturated alkylene silane monomer grafted onto a polyalkylene oxide comprising an unsaturated grafting silane and a base polymer consisting of a poly(oxyalkylene) compound of the formula: R"((OC.sub.n H.sub.2n).sub.z OR').sub.a wherein R' is a member from the group consisting of a hydrocarbon radical, a hydrogen atom, or an acyl radical and R" is a member selected from the group consisting of a hydrocarbon radical, a hydrogen atom, an amine-containing radical, or an acyl radical, a is an integer having a value of 1 to about 4, n has a value of 2 to 4 inclusive, z is an integer having a value of from 4 to 2300 inclusive, said grafted polymer having a percent silane graft of up to about 60%, said base polymer having a number average molecular weight of between about 200 and about 100,000 and wherein the amount of component (b) is between greater than about 0.01 wt. % and about 20 wt. % based on the total amount of component (a) plus component (b) in said concentrate.
Claim 22
Independent Claim
203 words
A method for providing aluminum-corrosion inhibition in an aluminum component heat transfer system which comprises filling said system with a composition comprising: (a) alcohol or water or mixtures thereof, and (b) an ethylenically unsaturated alkylene silane monomer grafted onto a polyalkylene oxide comprising an unsaturated grafting silane and a base polymer consisting of a poly(oxyalkylene) compound of the formula: R"((OC.sub.n H.sub.2n).sub.z OR').sub.a wherein R' is a member from the group consisting of a hydrocarbon radical, a hydrogen atom, or an acyl radical and R" is a member selected from the group consisting of a hydrocarbon radical, a hydrogen atom, an amine-containing radical, or an acyl radical, a is an integer having a value of 1 to about 4, n has a value of 2 to 4 inclusive, z is an integer having a value of from 4 to 2300 inclusive, said grafted polymer having a percent silane graft of up to about 60%, said base polymer having a number average molecular weight of between about 200 and about 100,000 and wherein the amount of component (b) is between greater than about 0.01 wt. % and about 20 wt. % based on the total amount of component (a) plus component (b) in said concentrate.
Claim 23
Dependent Claim
28 words
The method of claim 19 which comprises the additional step of adding to said composition: (c) ammonium hydroxide, alkali metal hydroxides, or alkaline earth metal hydroxides; or amines.
Claim 24
Dependent Claim
15 words
The method of claim 20 wherein component (c) is sodium or potassium hydroxide or triethanolamine.
Claim 25
Dependent Claim
29 words
The method of claim 19 wherein component (b) is soluble in component (a) to the extent at least about 0.01 weight percent based on the weight of the composition.
Claim 26
Dependent Claim
11 words
The method of claim 22 wherein component (a) is ethylene glycol.
Claim 27
Dependent Claim
37 words
The method of claim 20 wherein the reaction product of component (b) and component (c) is soluble in component (a) to the extent of at least about 0.01 weight percent based on the weight of the composition.
Claim 28
Dependent Claim
20 words
The method of claim 20 wherein the reaction product of component (b) and component (c) is insoluble in component (a).
Claim 29
Dependent Claim
13 words
The method of claim 19 wherein component (b) is insoluble in component (a).
Claim 30
Dependent Claim
39 words
The method of claim 19 wherein component (a) is ethylene glycol, said base polymer is a poly(oxyethylene-oxypropylene) compound having a number average molecular weight between 200 and 10,000, and said percent graft is between about 1% and about 20%.
Claim 31
Dependent Claim
14 words
The method of claim 19 wherein said heat transfer system is a cooling system.
Claim 32
Dependent Claim
38 words
The concentrate of claim 1 wherein the amount of component (b) is between about 0.1 wt. % and about 15 wt. % and is based on the total amount of component (a) plus component (b) in said concentrate.
Claim 33
Dependent Claim
38 words
The composition of claim 10 wherein the amount of component (b) is between about 0.1 wt % and about 15 wt. % and is based on the total amount of component (a) plus component (b) in said composition.
Claim 34
Dependent Claim
38 words
The method of claim 19 wherein the amount of component (b) is between about 0.1 wt. % and about 15 wt. % and is based on the total amount of component (a) plus component (b) in said composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |