US4399852A
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Application of ambient temperature cured polymers or prepolymers to a cured elastomer
Assignee: Bridgestone Firestone Inc
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Filing: 1981-10-28
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Granted: 1983-08-23
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Expires: 2001-10-28
Abstract
Abstract A process and composition for applying and bonding a curable polymer or prepolymer, for example, an amine curable polymer or prepolymer, at ambient temperatures to the surface of a cured elastomer substrate. The elastomer article or substrate is treated with an organic oxidant such as one selected, for example, from the group consisting of N-halosulfonamides, N-halohydantoins, N-haloamides, N-haloimides, and the various isomers of mono-, di-, and trichloroisocyanuric acid. A composition of a curable polymer or prepolymer is prepared with a curing agent. To the curing agent and curable polymer or prepolymer composition is added a polar solvent which is mixed with the resulting blend or mixture and added to the treated elastomer surface; said polymer or prepolymer cures at ambient temperature and becomes bonded to said elastomer. The application is relatively easy, since the entire mixture is a liquid and can be applied in situ. The invention is particularly suitable for repairing various damaged elastomer articles such as tires (especially off-the-road), conveyor belts, hoses, preparation of caulking or sealing compounds, and especially in bonding tire lugs or tire treads to a tire carcass.
Inventors
- 👤 Walter R. Hausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:45
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29C; B29C73/00; B29C73/02; B29C73/16; B29C73/163; B29D2030/544; B29L; B29L2023/00; B29L2023/005; B29L2030/00; B29L2031/00; B29L2031/709; B29L2031/7092; Y; Y10; Y10S; Y10S152/00; Y10S152/12; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386; Y10T428/31504; Y10T428/31551; Y10T428/31569; Y10T428/31573; Y10T428/3158; Y10T428/31583; Y10T428/31587
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
107 words
The process of repairing a cured elastomer tire substrate having an opening in its external surface, comprising the steps of: cleaning the surface of said opening, applying, from a liquid system, at least one treating agent layer, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating agent layer effectively bonding to the surface of said opening, and filling said opening with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 2
Dependent Claim
107 words
The process of repairing a cured elastomer tire substrate having an opening in its external surface, comprising the steps of: cleaning the surface of said opening, applying, from a liquid system, at least one treating agent layer, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating agent layer effectively bonding to the surface of said opening, and filling said opening with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 3
Dependent Claim
83 words
A process of repairing a cured elastomer tire according to claim 1, wherein said opening surface is cleaned with acetone, said treating layer is applied as a solution of trichlorocyanuric acid, and said amine curable polymer or prepolymer liquid system is polytetramethylene ether glycol, containing about 2.8 percent isocyanate end group by weight, in acetone as polar solvent; said curing agent is a complex of 4,4'-methylene dianiline with sodium chloride salt in a 50 percent by weight solution of tetraethylene glycol bis-2-ethyl hexoate.
Claim 4
Dependent Claim
194 words
A process for repairing a cured elastomer tire according to claim 1, wherein said liquid treating agent is selected from the group consisting of monochloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid, and combinations thereof, said amine curable polymer or prepolymer is a urethane polymer or prepolymer, wherein said amine curing agent is selected from the group consisting of a complex of 4,4'-methylene dianiline and a salt, said salt being selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite, and sodium cyanide, the ratio of said dianiline to said salt in said complex being 3 moles to 1 mole, the equivalent amount of said curing agent based upon said prepolymer or polymer ranging from about 0.85 to about 1.15 moles, the amount of said polar solvent ranging from about 2 to about 40 parts per 100 parts of said urethane polymer or said prepolymer, mixing said solvent, said urethane polymer or prepolymer, and said amine curing agent and applying said mixture to said opening to fill said opening, and curing at an ambient temperature of from about 10° C. to about 50° C.
Claim 5
Dependent Claim
118 words
The process of bonding a tread lug laminate to a cured elastomer tire substrate, comprising the steps of: cleaning the surface of said cured elastomer tire substrate, applying from a liquid system, at least one treating agent layer, said treating agent layer selected from the group consisting of a N-halohydantoin, an N-haloamide, and an N-haloimide, said treating agent layer effectively bonded to said substrate surface, and applying to said substrate, in the form of a tread lug, a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine acuring agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperatures to form a tread lug.
Claim 6
Dependent Claim
118 words
The process of bonding a tread lug laminate to a cured elastomer tire substrate, comprising the steps of: cleaning the surface of said cured elastomer tire substrate, applying from a liquid system, at least one treating agent layer, said treating agent layer selected from the group consisting of a N-halohydantoin, an N-haloamide, and an N-haloimide, said treating agent layer effectively bonded to said substrate surface, and applying to said substrate, in the form of a tread lug, a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine acuring agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperatures to form a tread lug.
Claim 7
Dependent Claim
200 words
A process of bonding a tread lug laminate to a cured elastomer tire substrate, according to claim 4, wherein said liquid treating agent is selected from the group consisting of monochloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid, and combinations thereof, said amine curable polymer or prepolymer is a urethane polymer or prepolymer, wherein said amine curing agent is selected from the group consisting of a complex of 4,4'-methylene dianiline and a salt, said salt being selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite, and sodium cyanide, the ratio of said dianiline to said salt in said complex being 3 moles to 1 mole, the equivalent amount of said curing agent based upon said prepolymer or polymer ranging from about 0.85 to about 1.15 moles, the amount of said polar solvent ranging from about 2 to about 40 parts per 100 parts of said urethane polymer or said prepolymer, mixing said solvent, said urethane polymer or prepolymer, and said amine curing agent and applying said mixture to said opening to fill said opening, and curing at an ambient temperature of from about 10° C. to about 50° C.
Claim 8
Dependent Claim
112 words
A process of bonding a retread to a cured elastomer tire substrate, comprising the steps of: cleaning the surface of said elastomer tire substrate, bonding, from a liquid system, at least one treating agent layer, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and bonding to said tire, in the form of a retread, a liquid system containing an amine curable polymer or prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer of said tire substrate at ambient temperature.
Claim 9
Dependent Claim
112 words
A process of bonding a retread to a cured elastomer tire substrate, comprising the steps of: cleaning the surface of said elastomer tire substrate, bonding, from a liquid system, at least one treating agent layer, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and bonding to said tire, in the form of a retread, a liquid system containing an amine curable polymer or prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer of said tire substrate at ambient temperature.
Claim 10
Dependent Claim
199 words
A process of bonding a retread to a cured elastomer tire substrate, according to claim 6, wherein said liquid treating agent is selected from the group consisting of monochloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid, and combinations thereof, said amine curable polymer or prepolymer is a urethane polymer or prepolymer, wherein said amine curing agent is a complex of 4,4'-methylene dianiline and a salt, said salt being selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite, and sodium cyanide, the ratio of said dianiline to said salt in said complex being 3 moles to 1 mole, the equivalent amount of said curing agent based upon said prepolymer or polymer ranging from about 0.85 to about 1.15 moles, the amount of said polar solvent ranging from about 2 to about 40 parts per 100 parts of said polymer or said prepolymer, mixing said solvent, said polymer or prepolymer, and said amine curing agent, and applying said mixture to said tire in the form of a retread, and curing at an ambient temperature of from about 10° C. to about 50° C. so that a retreaded tire is formed.
Claim 11
Dependent Claim
105 words
The process of repairing a cured elastomer radiator hose substrate having a cavity in its external surface, comprising the steps of: cleaning the surface of said cavity, applying, from a liquid system, at least one treating agent, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and filling said cavity with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 12
Dependent Claim
105 words
The process of repairing a cured elastomer radiator hose substrate having a cavity in its external surface, comprising the steps of: cleaning the surface of said cavity, applying, from a liquid system, at least one treating agent, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and filling said cavity with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 13
Dependent Claim
180 words
A process of repairing a cured elastomer radiator hose substrate according to claim 8, wherein said liquid treating agent is selected from the group consisting of monochloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid, and combinations thereof, said amine curable polymer or prepolymer is a urethane polymer or prepolymer, wherein said amine curing agent is a complex of 4,4'-methylene dianiline and a salt, said salt being selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite, and sodium cyanide, the ratio of said dianiline to said salt in said complex being 3 moles to 1 mole, the equivalent amount of said curing agent based upon said prepolymer or polymer ranging from about 85 to about 1.15 moles, from about 2 to about 40 parts of a polar solvent per 100 parts of said polymer or prepolymer, mixing said solvent, said polymer or said prepolymer, and said curing agent, and applying said mixture to said cavity, and curing at an ambient temperature of from about 10° C. to about 50° C.
Claim 14
Dependent Claim
104 words
The process of repairing an elastomer conveyor belt substrate having an opening in its external surface, comprising the steps of: cleaning the surface of said cavity, applying, from a liquid system, at least one treating agent, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and filling said cavity with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 15
Dependent Claim
104 words
The process of repairing an elastomer conveyor belt substrate having an opening in its external surface, comprising the steps of: cleaning the surface of said cavity, applying, from a liquid system, at least one treating agent, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and filling said cavity with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 16
Dependent Claim
186 words
A process of repairing an elastomer conveyor belt substrate having an opening in its external surface according to claim 10, wherein said liquid treating agent is selected from the group consisting of monochloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid, and combinations thereof, said amine curable polymer or prepolymer is a urethane polymer or prepolymer, wherein said amine curing agent is a complex of 4,4'-methylene dianiline and a salt, said salt being selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite, and sodium cyanide, the ratio of said dianiline to said salt in said complex being 3 moles to 1 mole, the equivalent amount of said curing agent based upon said prepolymer or polymer ranging from about 0.85 to about 1.15 moles, from about 2 to about 40 parts of a polar solvent per 100 parts of said polymer or prepolymer, mixing said solvent, said polymer or said prepolymer, and said curing agent, and applying said mixture to said opening, and curing at an ambient temperature of from about 10° C. to about 50° C.
Claim 17
Dependent Claim
104 words
The process of repairing a composite cured elastomer substrate having an opening in its external surface, comprising the steps of: cleaning the surface of said cavity, applying, from a liquid system, at least one treating agent, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and filling said cavity with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 18
Dependent Claim
104 words
The process of repairing a composite cured elastomer substrate having an opening in its external surface, comprising the steps of: cleaning the surface of said cavity, applying, from a liquid system, at least one treating agent, said treating agent layer selected from the group consisting of an N-halohydantoin, an N-haloamide, and an N-haloimide, said treating layer effectively bonding to said tire substrate surface, and filling said cavity with a liquid system containing an amine curable polymer or a prepolymer in a polar solvent and an amine curing agent, said amine curable polymer or prepolymer effectively bonding to said treating agent layer at ambient temperature.
Claim 19
Dependent Claim
185 words
A process of repairing a composite cured elastomer substrate according to claim 12, wherein said liquid treating agent is selected from the group consisting of monochloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid, and combinations thereof, and said amine curable polymer or prepolymer is a urethane polymer or prepolymer, wherein said amine curing agent is a complex of 4,4'-methylene dianiline and a salt, said salt being selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite, and sodium cyanide, the ratio of said dianiline to said salt in said complex being 3 moles to 1 mole, the equivalent amount of said curing agent based upon said prepolymer or polymer ranging from about 0.85 to about 1.15 moles, the amount of said polar solvent ranging from about 2 to about 40 parts per 100 parts of said polymer or said prepolymer, mixing said solvent, said polymer or prepolymer, and said amine curing agent and applying said mixture to said elastomer substrate, and curing at an ambient temperature of from about 10° C. to about 50° C.
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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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |