US3620796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substrates having strippable protective coatings
Assignee: ConocoPhillips Co
•
Filing: 1969-01-13
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Granted: 1971-11-16
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Expires: 1989-01-13
Abstract
Abstract This disclosure concerns an article of manufacture comprising a substrate e.g. automobile molding) having a readily strippable protective coating of a composition comprising petroleum wax and an ethylene-vinyl acetate copolymer containing from 16 to 22 percent vinyl acetate. In some instances an ethylene-isobutyl acrylate copolymer may be substituted for a portion of the ethylene-vinyl acetate copolymer.
Inventors
- 👤 Travis L Gordy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/20; B; B65; B65B; B65B33/00; C09D123/00; C09D123/02; C09D123/04; C09D123/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31801
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
35 words
The article of manufacture of claim 1 wherein the ethylene-vinyl acetate copolymer contains from about 17 to about 20 weight percent vinyl acetate and has a melt index of from about 2 to about 30.
Claim 2
Dependent Claim
35 words
The article of manufacture of claim 2 wherein the composition comprises from about 48 to about 55 parts by weight petroleum wax and from about 45 to about 52 parts by weight ethylene-vinyl acetate copolymer.
Claim 3
Dependent Claim
15 words
The article of manufacture of claim 3 wherein the petroleum wax is a microcrystalline wax.
Claim 4
Dependent Claim
14 words
The article of manufacture of claim 4 wherein the substrate is an automobile molding.
Claim 5
Dependent Claim
131 words
As an article of manufacture a substrate having a readily strippable coating of a composition consisting essentially of from about 45 to about 65 parts by weight petroleum wax having a melting point of at least 160* F. and from about 35 to about 55 parts by weight of a combination of ethylene-vinyl acetate copolymer, said ethylene-vinyl acetate copolymer containing from about 16 to about 22 weight percent vinyl acetate and having a melt index of from about 1.5 to about 200, and ethylene-isobutyl acrylate copolymer, said ethylene-isobutyl acrylate copolymer containing from about 18 to about 32 weight percent isobutyl acrylate and having a melt index of from about 2 to about 260, said combination of ethylene-vinyl acetate and ethylene-isobutyl acrylate copolymers containing at least 30 weight percent ethylene-isobutyl acrylate copolymer.
Claim 6
Dependent Claim
26 words
The article of manufacture of claim 6 wherein the combination of ethylene-vinyl acetate and ethylene-isobutyl acrylate copolymers contains at least 40 weight percent ethylene-isobutyl acrylate copolymer.
Claim 7
Dependent Claim
42 words
The article of manufacture of claim 7 wherein the composition comprises from about 48 to about 55 parts by weight petroleum wax and from about 45 to about 52 parts by weight of the combination of ethylene-vinyl acetate and ethylene-isobutyl acrylate copolymers.
Claim 8
Dependent Claim
35 words
The article of manufacture of claim 8 wherein the ethylene-vinyl acetate copolymer contains from about 17 to about 20 weight percent vinyl acetate and has a melt index of from about 2 to about 30.
Claim 9
Dependent Claim
35 words
The article of manufacture of claim 9 wherein the ethylene-isobutyl acrylate copolymer contains from about 28 to about 32 weight percent isobutyl acrylate and has a melt index of from about 2 to about 30.
Claim 10
Dependent Claim
15 words
The article of manufacture of claim 10 wherein the petroleum wax iS a microcrystalline wax.
Claim 11
Dependent Claim
14 words
The article of manufacture of claim 11 wherein the substrate is an automobile molding.
Claim 12
Independent Claim
77 words
A method of protecting metal and plastic articles while in shipment, said method comprising: applying to the article a readily strippable coating of a composition consisting essentially of from about 45 to about 65 parts by weight petroleum wax and from about 35 to about 55 parts by weight ethylene-vinyl acetate copolymer, said copolymer containing from about 16 to about 22 weight percent vinyl acetate and having a melt index of from about 1.5 to about 200.
Claim 13
Dependent Claim
24 words
The method of claim 13 wherein after shipment and prior to use of said article the readily strippable coating is removed from the article.
Claim 14
Dependent Claim
14 words
The method of claim 14 wherein the metal and plastic articles are automobile moldings.
References Cited (Backward Citations)
US3207716A
Cited
US3489705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |