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 06:40
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.
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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) | 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 |