US4148769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for rubberizing steel cords
Assignee: UG Licensing Services Inc
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Filing: 1977-05-09
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Granted: 1979-04-10
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Expires: 1997-05-09
Abstract
Abstract A rubber composition containing reinforcing pigment some of which is preferably silica pigment, sulfur, a vulcanization accelerator, litharge, and a cobalt salt, when coated on brass plated steel cords and vulcanized, adheres tenaciously and permanently to the cords, without the erratic adhesion previously obtained or loss of adhesion in humid atmospheres. A further improvement in adhesion is obtained by including a resorcinol resin in the composition.
Inventors
- 👤 John M. Swarts
- 👤 Zion S. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L; C08L21/00; C08L61/00; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12562; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
A rubber composition for bonding to brass plated steel by vulcanization in contact with the brass surface, which composition comprises: (a) a sulfur-vulcanizable rubber (b) at least one reinforcing pigment (c) sufficient sulfur for vulcanization of the rubber, together with a non-scorching vulcanization accelerator, and zinc oxide for activation of the accelerator (d) about one-fifth part to ten parts of litharge for each hundred parts by weight of rubber, and (e) about one-half part to fifteen parts of a cobalt salt of a soap forming acid which salt is dispersable in rubber for each hundred parts by weight of rubber.
Claim 2
Dependent Claim
100 words
A rubber composition for bonding to brass plated steel by vulcanization in contact with the brass surface, which composition comprises: (a) a sulfur-vulcanizable rubber (b) at least one reinforcing pigment (c) sufficient sulfur for vulcanization of the rubber, together with a non-scorching vulcanization accelerator, and zinc oxide for activation of the accelerator (d) about one-fifth part to ten parts of litharge for each hundred parts by weight of rubber, and (e) about one-half part to fifteen parts of a cobalt salt of a soap forming acid which salt is dispersable in rubber for each hundred parts by weight of rubber.
Claim 3
Dependent Claim
23 words
A rubber composition as in claim 1 in which a substantial part of (b) the reinforcing pigment is a reinforcing grade of silica.
Claim 4
Dependent Claim
23 words
A rubber composition as in claim 1 which comprises additionally: (f) ingredients which when heated will react to produce a cross-linked resorcinol resin.
Claim 5
Dependent Claim
23 words
A rubber composition as in claim 2 which comprises additionally: (f) ingredients which when heated will react to produce a cross-linked resorcinol resin.
Claim 6
Dependent Claim
20 words
A rubber composition as in claim 3 in which the ingredients (f) include hexa-methoxymethyl melamine and a soluble resorcinol resin.
Claim 7
Dependent Claim
23 words
A rubber composition as in claim 5 in which a substantial part of (b) the reinforcing pigment is a reinforcing grade of silica.
Claim 8
Dependent Claim
20 words
A rubber composition as in claim 1 in which the accelerator included in ingredients (c) is a hydrocarbon-substituted benzothiazyl sulfenamide.
Claim 9
Dependent Claim
14 words
A rubber composition as in claim 7 including also a substituted thiophthalimide scorch retarder.
Claim 10
Dependent Claim
34 words
A rubber composition as in claim 8 in which a substantial part of (b) the reinforcing pigment is a reinforcing grade of silica, and which comprises additionally hexa-methoxy melamine and a soluble resorcinol resin.
References Cited (Backward Citations)
US1883973A
Cited
US1919718A
Cited
US2240805A
Cited
US2643273A
Cited
US2912355A
Cited
US3897583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |