US5213823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turnup bladder having outer layer of PVC/acrylonitrile butadiene rubber blend
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1992-03-20
•
Granted: 1993-05-25
•
Expires: 2012-03-20
Abstract
Abstract A turnup bladder for use in tire making as an outside surface coating which is a release coating that also imparts improved durability and cut resistance. This outside surface coating is an elastomeric polymer blend containing from about 10 to about 60, preferably from about 40 to about 60 parts by weight of polyvinyl chloride and from about 40 to about 90, preferably about 40 to about 60 parts by weight of an acrylonitrile-butadiene rubber per 100 parts of polymer wherein the acrylonitrile-butadiene rubber comprises from about 25 to about 40 parts by weight of acrylonitrile and from about 60 to about 75 parts by weight of butadiene per 100 parts of said acrylonitrile-butadiene rubber.
Inventors
- 👤 Jerry D. Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; B; B32; B32B; B32B25/00; B32B25/04; B32B25/042; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/3642; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/24; B29D30/26; B32B25/08; B32B25/14; B32B25/16; B32B27/00; B32B27/30; B32B27/304; B29D2030/2614; B32B2319/00; B32B2327/00; B32B2327/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
An inflatable bladder for use in making a rubber article wherein the materials forming at least the outside surface of said bladder is an elastomeric polymer blend containing from about 10 to about 60 parts by weight of polyvinyl chloride from about 40 to about 90 parts by weight of a acrylonitrile-containing rubber per 100 parts of polymer, wherein said rubber comprises from about 10 to about 45 parts by weight of acrylonitrile and from about 55 to about 90 parts by weight of a lower aliphatic diene per 100 parts of said acrylonitrile-containing rubber.
Claim 2
Dependent Claim
95 words
An inflatable bladder for use in making a rubber article wherein the materials forming at least the outside surface of said bladder is an elastomeric polymer blend containing from about 10 to about 60 parts by weight of polyvinyl chloride from about 40 to about 90 parts by weight of a acrylonitrile-containing rubber per 100 parts of polymer, wherein said rubber comprises from about 10 to about 45 parts by weight of acrylonitrile and from about 55 to about 90 parts by weight of a lower aliphatic diene per 100 parts of said acrylonitrile-containing rubber.
Claim 3
Dependent Claim
14 words
An inflatable bladder according to claim 1 wherein said lower aliphatic diene is butadiene.
Claim 4
Dependent Claim
14 words
An inflatable bladder according to claim 1 wherein said acrylonitrile-containing rubber is acrylonitrile-butadiene rubber.
Claim 5
Dependent Claim
35 words
An inflatable bladder according to claim 3 wherein said acrylonitrile-butadiene rubber comprises from about 25 to about 40 parts by weight of acrylonitrile and from about 60 to about 75 parts by weight of butadiene.
Claim 6
Dependent Claim
81 words
An inflatable bladder according to claim 1 wherein said elastomeric polymer blend contains from about 40 to about 60 parts by weight of polyvinyl chloride and from about 40 to about 60 parts by weight of an acrylonitrile-diene rubber per 100 parts of polymer, wherein said rubber comprises from about 25 to about 40 parts by weight of acrylonitrile and from about 60 to about 75 parts by weight of a lower aliphatic diene per 100 parts of said acrylonitrile-butadiene rubber.
Claim 7
Dependent Claim
14 words
An inflatable bladder according to claim 5 wherein said lower aliphatic diene is butadiene.
Claim 8
Dependent Claim
24 words
An inflatable bladder according to claim 1 wherein said elastomeric polymer blend contains from about 1 to about 40 parts by weight of plasticizer.
Claim 9
Dependent Claim
37 words
A cured rubber article comprising a cured diene rubber base and a thin outside surface layer thereon, the material forming said outside surface layer being an elastomeric polymer blend having the composition as specified in claim 1.
References Cited (Backward Citations)
US3993607A
Cited
US3932255A
Cited
US4087307A
Cited
US4163683A
Cited
US4547544A
Cited
US4790365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-24 | 1996-11-23 | 1997-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-24 | 2000-11-23 | 2001-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-24 | 2004-11-23 | 2005-05-25 | $7700.00 | Window Closed / Lapsed |