Patent US4613632A successfully refreshed from Google Patents.
US4613632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene copolymers for hot melt systems
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-02-01
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Granted: 1986-09-23
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Expires: 2005-02-01
Abstract
Abstract Ethylene-vinyl acetate copolymers having a melt index of 2,000 to 7,500 and containing from 10 to 22% vinyl acetate are useful in hot melt road marking compositions containing from 1 to 30% of the EVA copolymer; from 0 to 29% by weight of a binder resin; and from 0 to 5% by weight of a plasticizer, the balance of the composition typically comprising from 70 to 80% by weight of aggregates, made up of particulate materials such as sand and/or fillers and/or pigments such as calcium carbonate and titanium dioxide.
Inventors
- 👤 Giorgio Aliani
- 👤 Jacques B. Lechat
- 👤 Jozef A. F. Smits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:56
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08; C08F; C08F210/00; C08F210/02; C08L; C08L95/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A hot melt roadmarking composition comprising: (a) from 1 to 30% by weight of an ethylene-vinyl acetate copolymer having from 10 to 22% by weight of vinyl acetate and a melt index of from 2000 to 7500; (b) from 0 to 29% by weight of a binder resin; and (c) from 0 to 5% by weight of a plasticizer.
Claim 2
Dependent Claim
59 words
A hot melt roadmarking composition comprising: (a) from 1 to 30% by weight of an ethylene-vinyl acetate copolymer having from 10 to 22% by weight of vinyl acetate and a melt index of from 2000 to 7500; (b) from 0 to 29% by weight of a binder resin; and (c) from 0 to 5% by weight of a plasticizer.
Claim 3
Dependent Claim
52 words
A hot melt roadmarking composition as claimed in claim 1 comprising: (a) from 5 to 15% by weight of the EVA; (b) from 5 to 15% by weight of the binder resin; (c) from 0 to 5% by weight of the plasticizer; and (d) from 70 to 80% by weight of aggregate.
Claim 4
Dependent Claim
32 words
A hot melt roadmarking composition as claimed in claim 1, in which the EVA has from 11 to 16% by weight vinyl acetate and a melt index of from 2500 to 7000.
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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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |