Patent US2434951A successfully refreshed from Google Patents.
Patent US4524159A successfully refreshed from Google Patents.
US4524159A
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Leak stopping composition and method
Assignee: Prestone Products Corp USA
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Filing: 1984-02-10
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Granted: 1985-06-18
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Expires: 2004-02-10
Abstract
Abstract A leak stopping composition for use in heat exchange systems comprising a dispersion of a fibrillated fiber in a liquid medium.
Inventors
- 👤 Alan G. Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:10
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/12; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S525/00; Y10S525/935
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
34 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of a fibrillated fiber in an amount which is effective for the stopping of leaks.
Claim 2
Dependent Claim
34 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of a fibrillated fiber in an amount which is effective for the stopping of leaks.
Claim 3
Dependent Claim
32 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of at least about 0.015 wt.% fibrillated fiber, based on the total weight.
Claim 4
Dependent Claim
32 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of at least about 0.015 wt.% fibrillated fiber, based on the total weight.
Claim 5
Dependent Claim
32 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of at least about 0.03 wt.% fibrillated fiber, based on the total weight.
Claim 6
Dependent Claim
32 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of at least about 0.03 wt.% fibrillated fiber, based on the total weight.
Claim 7
Dependent Claim
102 words
The composition of claim 1 wherein the fibrillated fiber comprises a polymer consisting essentially of the recurring units selected from the group; ##STR7## with the proviso that ##STR8## are present in the polymer in substantially equimolar amounts, and wherein R, R', and R", which may the same or different, are divalent radicals, n may be zero or the integer one, and wherein the R, R', and R" radicals in the polymer are saturated or unsaturated aliphatic or ringed aliphatic radicals containing 1 to 10 carbon atoms, or single ringed or fused multiringed carbocyclic, heterocyclic aromatic radicals, or a series of such radicals.
Claim 8
Dependent Claim
36 words
The composition of claim 4 wherein the R, R', and R" in the polymer are single rigid radicals with extended bonds or a series of such rigid radicals which are linked together directly by extended bonds.
Claim 9
Dependent Claim
42 words
The composition of claim 5 wherein R, and R' are selected from the group 1,4-phenylene, 4,4'-biphenylene, 2,6-naphthylene, 2,5-pyridene, trans-vinylene and trans-1,4-cyclohexylene and R" is 1,4-phenylene with the proviso that at least 50 mole percent of either R or R' radicals are 1,4-phenylene.
Claim 10
Dependent Claim
11 words
The composition of claim 1 wherein the fibrillated fiber comprises poly(imino-1,4-phenyleneiminoterephthaloyl).
Claim 11
Dependent Claim
12 words
The composition of claim 1 wherein the liquid medium comprises ethylene glycol.
Claim 12
Dependent Claim
18 words
The composition of claim 8 wherein the liquid medium additionally contains a corrosion inhibitor in an inhibitory amount.
Claim 13
Dependent Claim
12 words
The composition of claim 8 wherein the liquid medium additionally comprises water.
Claim 14
Dependent Claim
39 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of a fibrillated fiber as the sole leak-stopping additive in an amount which is effective for the stopping of leaks.
Claim 15
Dependent Claim
39 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of a fibrillated fiber as the sole leak-stopping additive in an amount which is effective for the stopping of leaks.
Claim 16
Dependent Claim
37 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of at least about 0.015 wt.% fibrillated fiber, based on the total weight, as the sole leak-stopping additive.
Claim 17
Dependent Claim
37 words
A composition for the stopping of leaks in a coolant system which comprises a suspension in a liquid medium of at least about 0.015 wt.% fibrillated fiber, based on the total weight, as the sole leak-stopping additive.
Claim 18
Dependent Claim
21 words
The composition of claim 12 wherein the suspension in the liquid medium is of at least about 0.03 wt.% fibrillated fiber.
Claim 19
Independent Claim
43 words
A method for the stopping of leaks in a coolant system which comprises providing as the liquid coolant in the coolant system a suspension in a liquid medium of a fibrillated fiber in an amount which is effective for the stopping of leaks.
Claim 20
Independent Claim
43 words
A method for the stopping of leaks in a coolant system which comprises providing as the liquid coolant in the coolant system a suspension in a liquid medium of a fibrillated fiber in an amount which is effective for the stopping of leaks.
Claim 21
Independent Claim
36 words
A method for the stopping of leaks in a coolant system which comprises providing as the liquid coolant in the coolant system a suspension in a liquid medium of at least about 0.015 wt.% fibrillated fiber.
Claim 22
Independent Claim
36 words
A method for the stopping of leaks in a coolant system which comprises providing as the liquid coolant in the coolant system a suspension in a liquid medium of at least about 0.015 wt.% fibrillated fiber.
Claim 23
Dependent Claim
21 words
The method of claim 15 wherein the suspension in the liquid medium is of at least about 0.03 wt.% fibrillated fiber.
Claim 24
Dependent Claim
102 words
The method of claim 15 wherein the fibrillated fiber comprises a polymer consisting essentially of the recurring units selected from the group; ##STR9## with the proviso that ##STR10## are present in the polymer in substantially equimolar amounts, and wherein R, R', and R", which may the same or different, are divalent radicals, n may be zero or the integer one, and wherein the R, R', and R" radicals in the polymer are saturated or unsaturated aliphatic or ringed aliphatic radicals containing 1 to 10 carbon atoms, or single ringed or fused multiringed carbocyclic, heterocyclic aromatic radicals, or a series of such radicals.
Claim 25
Dependent Claim
36 words
The method of claim 17 wherein the R, R', and R" in the polymer are single rigid radicals with extended bonds or a series of such rigid radicals which are linked together directly by extended bonds.
Claim 26
Dependent Claim
42 words
The method of claim 18 wherein R, and R' are selected from the group 1,4-phenylene, 4,4'-biphenylene, 2,6-naphthylene, 2,5-pyridene, trans-vinylene and trans-1,4-cyclohexylene and R" is 1,4-phenylene with the proviso that at least 50 mole percent of either R or R' radicals are 1,4-phenylene.
Claim 27
Dependent Claim
11 words
The method of claim 19 wherein the fibrillated fiber comprises poly(imino-1,4-phenyleneiminoterephthaloyl).
Claim 28
Dependent Claim
12 words
The method of claim 14 wherein the liquid medium comprises ethylene glycol.
Claim 29
Dependent Claim
18 words
The method of claim 21 wherein the liquid medium additionally contains a corrosion inhibitor in an inhibitory amount.
Claim 30
Dependent Claim
12 words
The method of claim 21 wherein the liquid medium additionally comprises water.
Claim 31
Dependent Claim
15 words
The method of claim 15 wherein the fibrillated fiber is the sole leak stopping additive.
Claim 32
Dependent Claim
18 words
The composition of claim 1 wherein the fibrillated fiber has a length not less than about 1 mm.
Claim 33
Dependent Claim
20 words
The composition of claim 1 wherein the fibrillated fiber has a length between about 1 mm and about 7 mm.
Claim 34
Dependent Claim
21 words
The composition of claim 1 wherein the fibrillated fiber has a surface area greater than about 1 square meter per gram.
Claim 35
Dependent Claim
21 words
The composition of claim 1 wherein the fibrillated fiber has a surface area greater than about 10 square meters per gram.
Claim 36
Dependent Claim
18 words
The method of claim 15 wherein the fibrillated fiber has a length not less than about 1 mm.
Claim 37
Dependent Claim
20 words
The method of claim 15 wherein the fibrillated fiber has a length between about 1 mm and about 7 mm.
Claim 38
Dependent Claim
21 words
The method of claim 15 wherein the fibrillated fiber has a surface area greater than about 1 square meter per gram.
Claim 39
Dependent Claim
21 words
The method of claim 15 wherein the fibrillated fiber has a surface area greater than about 10 square meters per gram.
Claim 40
Dependent Claim
22 words
The composition of claim 23 wherein the total water content is less than about 3.5 wt. %, based on the total weight.
Claim 41
Dependent Claim
20 words
The composition of claim 23 wherein the total water content is about 3 wt. %, based on the total weight.
Claim 42
Dependent Claim
9 words
The composition of claim 1 additionally comprising a dispersant.
Claim 43
Dependent Claim
14 words
The composition of claim 35, wherein the dispersant is an alumino-silicate clay suspending agent.
Claim 44
Dependent Claim
13 words
The method of claim 14 wherein the liquid coolant additionally comprises a dispersant.
Claim 45
Dependent Claim
14 words
The method of claim 37, wherein the dispersant is an alumino-silicate clay suspending agent.
References Cited (Backward Citations)
US4439561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |