Patent US4051090A successfully refreshed from Google Patents.
US4051090A
Expired / Lapsed
US
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Adhesive bonding
Assignee: Polygulf Associates
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Filing: 1974-12-23
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Granted: 1977-09-27
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Expires: 1994-12-23
Abstract
Abstract For securing together elastomeric substrates in surface-to-surface contact an adhesive for interposing between the substrates includes elastomer, a prepolymer or a polymerizable monomer, and a graft initiator. Molecular grafting occurs between the elastomer of the adhesive and the elastomer of both of the substrates, and after curing the layer of adhesive forms an integral assembly with the substrates, to result in a bonding strength which is much higher than is obtainable with known surface adhesives. The adhesive is of particular utility in bonding new tread bands to tire casings in the re-capping of used automobile tires.
Inventors
- 👤 Carl Horowitz
- 👤 Michael Dichter
- 👤 Navinchandra Bhogilal Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:18
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C09; C09J; C09J4/00; C09J4/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31826; Y10T428/3183
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
An adhesive, for bonding a first elastomeric substrate to a second elastomeric substrate, comprising: i. elastomer ii. prepolymer iii. graft initiator, having the following constituents in parts by weight: ______________________________________
Styrene butadiene rubber 70.00
Butadiene propolymer having
pendant vinyl groups 3.00
Carbon black 4.50
Benzene 22.50
Sulfur 0.25
Benzothiazyldisulfide 0.15
Zinc oxide 0.50
Stearic acid 0.10
Antioxidant 0.15
Accelerator 3.00
Toluene 40.85
Divinyl benzene 2.00
Cumyl peroxide 0.10
Silver perchlorate 0.40
Methyl ethyl ketone 2.50
______________________________________
Claim 2
Dependent Claim
76 words
An adhesive, for bonding a first elastomeric substrate to a second elastomeric substrate, comprising: i. elastomer ii. prepolymer iii. graft initiator, having the following constituents in parts by weight: ______________________________________
Styrene butadiene rubber 70.00
Butadiene propolymer having
pendant vinyl groups 3.00
Carbon black 4.50
Benzene 22.50
Sulfur 0.25
Benzothiazyldisulfide 0.15
Zinc oxide 0.50
Stearic acid 0.10
Antioxidant 0.15
Accelerator 3.00
Toluene 40.85
Divinyl benzene 2.00
Cumyl peroxide 0.10
Silver perchlorate 0.40
Methyl ethyl ketone 2.50
______________________________________
Claim 3
Dependent Claim
19 words
The adhesive of claim 1 wherein the accelerator is selected from the group consisting of mercaptobenzothiazole and thiuram disulfides.
Claim 4
Dependent Claim
81 words
The process for producing the adhesive of claim 1 which comprises the steps of: a. preparing a solution of the styrene butadiene rubber in the benzene b. mixing said solution with the butadiene prepolymer and carbon black c. grinding said mixture d. adding to said ground mixture the sulfur benzothiazyldisulfide zinc oxide stearic acid antioxidant accelerator toluene and mixing and grinding e. adding to the product of stage (d) the divinyl benzene cumyl peroxide silver perchlorate methyl ethyl ketone and mixing.
References Cited (Backward Citations)
US2755270A
Cited
US3741931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |