US4099638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated glass bottles
Assignee: Mitsui Polychemicals Co Ltd
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Filing: 1977-03-07
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Granted: 1978-07-11
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Expires: 1997-03-07
Abstract
Abstract Glass bottles, suitable as containers for drinks, such as beer and fruit juice, are coated with a single layer of a thermally cured material formed of a powdery composition comprising a mixture of (i) a blocked organic polyisocyanate and (ii) a hydrolyzed ethylene-vinyl ester copolymer and/or a carboxyl-modified version of said hydrolyzed copolymer. The coated bottles are highly effective in the prevention of scattering of glass fragments in the event of breakage and excellent in clarity, alkali resistance, abrasion resistance, scratch resistance and weathering quality.
Inventors
- 👤 Tetsujiro Tatsumi
- 👤 Reiji Miyamoto
- 👤 Shiro Narasaki
- 👤 Seiji Kazama
- 👤 Michio Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; B; B65; B65D; B65D23/00; B65D23/08; B65D23/0807; B65D23/0814; C03; C03C; C03C17/00; C03C17/28; C03C17/32; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31598; Y10T428/31601
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A glass bottle having a single-layer coating on the surface thereof coated with a thermally cured material formed of a powdery composition comprising a mixture of (i) a blocked organic polyisocyanate and (ii) a member selected from the group consisting of a hydrolyxed ethylene-vinyl ester copolymer, a carboxyl-modified version of the hydrolyzed copolymer or mixtures thereof, said ethylene-vinyl copolymer being selected from the group consisting of vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate copolymers.
Claim 2
Dependent Claim
76 words
A glass bottle having a single-layer coating on the surface thereof coated with a thermally cured material formed of a powdery composition comprising a mixture of (i) a blocked organic polyisocyanate and (ii) a member selected from the group consisting of a hydrolyxed ethylene-vinyl ester copolymer, a carboxyl-modified version of the hydrolyzed copolymer or mixtures thereof, said ethylene-vinyl copolymer being selected from the group consisting of vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate copolymers.
Claim 3
Dependent Claim
27 words
A glass bottle as claimed in claim 1, wherein at least a portion of the component (ii) is a carboxyl-modified version of a hydrolyzed ethylene-vinyl ester copolymer.
Claim 4
Dependent Claim
34 words
A glass bottle as claimed in claim 2, wherein the carboxyl-modified version of a hydrolyzed ethylene-vinyl ester copolymer is a copolymer prepared by reacting a hydrolyzed ethylene-vinyl ester copolymer with a carboxyl-containing unsaturated compound.
Claim 5
Dependent Claim
34 words
A glass bottle as claimed in claim 2, wherein the carboxyl-modified version of a hydrolyzed ethylene-vinyl ester copolymer is a copolymer prepared by reacting a hydrolyzed ethylene-vinyl ester copolymer with a cyclic acid anhydride.
Claim 6
Dependent Claim
19 words
A glass bottle as claimed in claim 3, wherein the carboxyl-containing unsaturated compound is acrylic acid or methacrylic acid.
Claim 7
Dependent Claim
34 words
A glass bottle as claimed in claim 3, wherein the proportion of a carboxyl-containing unsaturated compound based on a hydrolyzed ethylene-vinyl ester copolymer is within the range of about 0.05 to 0.5 weight percent.
Claim 8
Dependent Claim
26 words
A glass bottle as claimed in claim 1, wherein the component (i) is a blocked organic polyisocyanate prepared by reacting a diisocyanate with a blocking agent.
Claim 9
Dependent Claim
16 words
A glass bottle as claimed in claim 7, wherein the diisocyanate is 4,4'-methylene-bis(cyclohexyl isocyanate) or ω,ω'-diisocyanato-dimethylbenzene.
Claim 10
Dependent Claim
14 words
A glass bottle as claimed in claim 7, wherein the blocking agent is ε-caprolactam.
Claim 11
Dependent Claim
43 words
A glass bottle as claimed in claim 1, wherein the hydrolyzed ethylene-vinyl ester copolymer is a copolymer consisting of 70 to 95 mole percent of ethylene, 0 to 25 mole percent of vinyl ester and 5 to 25 mole percent of vinyl alcohol.
Claim 12
Dependent Claim
26 words
A glass bottle as claimed in claim 1, wherein the melt index of the hydrolyzed ethylene-vinyl ester copolymer is within the range of 1 to 1000.
Claim 13
Dependent Claim
49 words
A glass bottle as claimed in claim 1, wherein the compounding ratio of the component (i) to the component (ii) is within the range of about 0.01 to 1 mole equivalent to each mole of hydroxyl groups in the hydrolyzed ethylene-vinyl ester copolymer, the carboxyl-modified version or mixtures thereof.
Claim 14
Dependent Claim
22 words
A glass bottle as claimed in claim 1, wherein the coating layer has a thickness of about 5 to about 300 microns.
Claim 15
Dependent Claim
81 words
A glass bottle as claimed in claim 1, wherein the compounding ratio of the component (i) to the component (ii) is within the range of about 0.01 to 1 mole equivalent to each mole of hydroxyl groups in the hydrolyzed ethylene-vinyl ester copolymer or the carboxyl-modified version thereof or the mixture; the melt index of the hydrolyzed ethylene-vinyl ester copolymer is within the range of 1 to 1000 and the coating layer has a thickness of from 5 to 300 microns.
Claim 16
Dependent Claim
81 words
A glass bottle as claimed in claim 1, wherein the compounding ratio of the component (i) to the component (ii) is within the range of about 0.1 to 0.5 mole equivalent to each mole of hydroxyl groups in the hydrolyzed ethylene-vinyl ester copolymer or the carboxyl-modified version thereof or the mixture; the melt index of the hydrolyzed ethylene-vinyl ester copolymer is within the range of 10 to 500 and the coating layer has a thickness of from 50 to 200 microns.
References Cited (Backward Citations)
US3889031A
Cited
US3926875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |