US4533305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treated tire curing bladder, treatment composition therefor and method for curing tires
Assignee: Goodyear Tire and Rubber Co
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Filing: 1984-09-17
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Granted: 1985-08-06
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Expires: 2004-09-17
Abstract
Abstract Rubber tire curing bladder having a coating containing a polydimethylsiloxane, a silane a surfactant and optionally a metal salt of an organic acid.
Inventors
- 👤 Louis F. Comper
- 👤 Robert F. Scheiderich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:40
CPC Classifications
C; C10; C10M; C10M3/00; B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C33/64; B29C43/00; B29C43/02; B29C43/10; B29C43/102; B29C43/104; C08; C08L; C08L83/00; C08L83/04; B29L; B29L2030/00; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2227/00; C10M2227/04; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2010/14; C10N2010/16; C10N2020/00; C10N2020/01; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A cured, rubber, expandable tire cure bladder having a coating on its outer exposed surface, where said coating consists essentially of the product of a mixture of: (i) about 20 to about 40 parts by weight hydroxyl capped polydimethylsiloxane characterized by having a viscosity in the range of about 12 million to about 28 million centistokes at 25° C.; (ii) about 35 to about 70 parts by weight of at least one silane selected from (a) a methyl hydrogen silane, characterized by having a viscosity in the range of about 20 to about 40 centistokes at 25° C., (b) dimethyl hydrogen silane characterized by having a viscosity in the range of about 80 to about 120 centistokes at 25° C. and (c) methyl trimethoxy silane; (iii) optionally, about 3 to about 12 parts by weight of a metal salt of an organic acid selected from at least one of zinc, magnesium, manganese and cobalt acetate, stearate, propionate, glutonate and actoate thereof; and (iv) about 10 to about 25 parts by weight surfactant for said polydimethylsiloxane.
Claim 2
Dependent Claim
175 words
A cured, rubber, expandable tire cure bladder having a coating on its outer exposed surface, where said coating consists essentially of the product of a mixture of: (i) about 20 to about 40 parts by weight hydroxyl capped polydimethylsiloxane characterized by having a viscosity in the range of about 12 million to about 28 million centistokes at 25° C.; (ii) about 35 to about 70 parts by weight of at least one silane selected from (a) a methyl hydrogen silane, characterized by having a viscosity in the range of about 20 to about 40 centistokes at 25° C., (b) dimethyl hydrogen silane characterized by having a viscosity in the range of about 80 to about 120 centistokes at 25° C. and (c) methyl trimethoxy silane; (iii) optionally, about 3 to about 12 parts by weight of a metal salt of an organic acid selected from at least one of zinc, magnesium, manganese and cobalt acetate, stearate, propionate, glutonate and actoate thereof; and (iv) about 10 to about 25 parts by weight surfactant for said polydimethylsiloxane.
Claim 3
Dependent Claim
25 words
A cured, butyl or butyl-type rubber, expandable tire cure bladder of claim 1 where the silane (ii) is methyl hydrogen silane and/or dimethyl hydrogen silane.
Claim 4
Dependent Claim
26 words
A cured, butyl or butyl-type rubber, expandable tire cure bladder of claim 1 where the silane of (ii) is methyl hydrogen silane and/or dimethyl hydrogen silane.
References Cited (Backward Citations)
US3872038A
Cited
US4018564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |