Patent US4136219A successfully refreshed from Google Patents.
US4136219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying polyurethane paint to vulcanized rubber
Assignee: Individual
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Filing: 1977-03-18
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Granted: 1979-01-23
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Expires: 1997-03-18
Abstract
Abstract Polyurethane paint is applied with good adhesion to a vulcanized rubber surface composed of halogenated butyl rubber or blends thereof with natural rubber, SBR rubber, EPDM rubber, polybutadiene rubber, acrylonitrile butadiene rubber, polychlorophrene rubber, synthetic polyisoprene rubber, or chloro sulfonated polyethylene rubber, the blends containing at least 30 phr halogenated butyl rubber, the rubber having been cured using a metal oxide or halide and an alkyl phenol polysulfide accelerator.
Inventors
- 👤 Norman E. Odam
- 👤 Bernard Costemalle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:47
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2321/00; C08J2475/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31569; Y10T428/31573; Y10T428/3158; Y10T428/31583; Y10T428/31587; Y10T428/31826; Y10T428/31855; Y10T428/31931
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
The process of applying a polyurethane paint to a vulcanized rubber surface, said vulcanized rubber being selected from the group consisting of halogenated butyl rubber and blends of same with a rubber selected from the group consisting of natural rubber, styrene butadiene rubber, EPDM rubber, polybutadiene rubber, acrylonitrile butadiene rubber, polychloroprene rubber, synthetic polyisoprene rubber, or chloro sulfonated polyethylene rubber, said blends containing at least 30 parts of halogenated butyl rubber per hundred parts by weight of vulcanized rubber, said rubber having been cured using a metal oxide or halide and an alkyl phenol polysulfide accelerator, said process consisting essentially of the step of applying said paint to the cured rubber surface, said rubber surface being substantially unmodified after curing whereby good adhesion of said paint on said surface is obtained.
Claim 2
Dependent Claim
131 words
The process of applying a polyurethane paint to a vulcanized rubber surface, said vulcanized rubber being selected from the group consisting of halogenated butyl rubber and blends of same with a rubber selected from the group consisting of natural rubber, styrene butadiene rubber, EPDM rubber, polybutadiene rubber, acrylonitrile butadiene rubber, polychloroprene rubber, synthetic polyisoprene rubber, or chloro sulfonated polyethylene rubber, said blends containing at least 30 parts of halogenated butyl rubber per hundred parts by weight of vulcanized rubber, said rubber having been cured using a metal oxide or halide and an alkyl phenol polysulfide accelerator, said process consisting essentially of the step of applying said paint to the cured rubber surface, said rubber surface being substantially unmodified after curing whereby good adhesion of said paint on said surface is obtained.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein a blend of 75-85 parts by weight of chlorobutyl rubber and 15-25 parts by weight of natural rubber are used.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein the halogenated butyl rubber is cured at a temperature of between 150° C. and 200° C.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein the rubber consists essentially of 60-80 wt.% of said ethylene-propylene-diene terpolymer and 20-40 wt.% of chlorobutyl rubber.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the metal oxide is zinc oxide.
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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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |