Patent US3889030A successfully refreshed from Google Patents.
US3889030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating glass article and improved coated glassware product
Assignee: DIAMOND THATCHER Inc
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Filing: 1972-08-22
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Granted: 1975-06-10
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Expires: 1992-08-22
Abstract
Abstract Articles of glass are coated by applying a first undercoating of an ethylenically unsaturated carboxylic acid which is preferably a polyacrylic acid followed by a coating of a homopolymer of a polyolefin preferably polyethylene. The resulting product has improved durability and resistance to shattering.
Inventors
- 👤 Roy S Arrandale
- 👤 Wayne A Walding
- 👤 Barney R Daugherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:50
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/3405; Y; Y10; Y10S; Y10S215/00; Y10S215/06; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
53 words
COATED GLASSWARE ARTICLE HAVING IMPROVED DURABILITY AND RESISTANCE TO SHATTERING COMPRISING A. A GLASS CONTAINER B. A FIRST COATING CONSISTING ESSENTIALLY OF A POLYMER OF AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID, AND C. A SECOND COATING CONSISTING ESSENTIALLY OF A HOMOPOLYER OF AN OLEFIN SAID SECOND COATING BEING RELATIVELY THICKER THAN SAID FIRST COATING.
Claim 2
Dependent Claim
53 words
COATED GLASSWARE ARTICLE HAVING IMPROVED DURABILITY AND RESISTANCE TO SHATTERING COMPRISING A. A GLASS CONTAINER B. A FIRST COATING CONSISTING ESSENTIALLY OF A POLYMER OF AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID, AND C. A SECOND COATING CONSISTING ESSENTIALLY OF A HOMOPOLYER OF AN OLEFIN SAID SECOND COATING BEING RELATIVELY THICKER THAN SAID FIRST COATING.
Claim 3
Independent Claim
60 words
The method of coating a glass article comprising a. applying a first coating to said article, said first coating consisting essentially of a polymer of an ethylenically unsaturated carboxylic acid; b. applying a second coating consisting essentially of a homopolymer of an olefin resin said second coating being relatively thicker than said first coating; and c. curing said second coating.
Claim 4
Independent Claim
60 words
The method of coating a glass article comprising a. applying a first coating to said article, said first coating consisting essentially of a polymer of an ethylenically unsaturated carboxylic acid; b. applying a second coating consisting essentially of a homopolymer of an olefin resin said second coating being relatively thicker than said first coating; and c. curing said second coating.
Claim 5
Dependent Claim
28 words
The method according to claim 1 wherein the temperature of said glass article is brought to a heated condition before the application of said first and second coatings.
Claim 6
Dependent Claim
53 words
The method according to claim 2 wherein said glass article is heated to a temperature within the range of about 150 to about 250*F before the application of said first coat and again heated to a temperature in the range of about 350* to about 450*F before the application of said second coating.
Claim 7
Dependent Claim
18 words
The method according to claim 1 wherein said polymer of an ethylenically unsaturated carboxylic acid is polyacrylic acid.
Claim 8
Dependent Claim
26 words
The method according to claim 4 wherein said polyacrylic acid is in the form of an aqueous solution and said polyolefin as a homopolymer of ethylene.
Claim 9
Dependent Claim
38 words
The method according to claim 5 wherein said aqueous solution contains between about 0.5 to about 25 percent by weight polyacrylic acid and said homopolymer of ethylene has a melt index of between about 5 to about 100.
Claim 10
Dependent Claim
16 words
The method according to claim 1 wherein said glass article is an uncoated virgin glass bottle.
Claim 11
Dependent Claim
17 words
Coated glassware according to claim 8 wherein said polymer of ethylenically unsaturated carboxylic acid is polyacrylic acid.
Claim 12
Dependent Claim
11 words
Coated glassware according to claim 9 wherein said olefin is ethylene.
Claim 13
Dependent Claim
43 words
Coated glassware according to claim 10 wherein said first coating of a polymer of ethylenically unsaturated carboxylic acid is less than about 0.001 inch thick and said second coating of a homopolymer of an olefin is about 0.004 to about 0.035 inch thick.
References Cited (Backward Citations)
US2965596A
Cited
US3211808A
Cited
US3415673A
Cited
US3376155A
Cited
US3420693A
Cited
US3418153A
Cited
US3661628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |