US4276351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl butyral plasticized with tetraethyleneglycol di-2-ethylhexanoate
Assignee: EIDP Inc
•
Filing: 1980-06-30
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Granted: 1981-06-30
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Expires: 2000-06-30
Abstract
Abstract Polyvinyl butyral plasticized with tetraethyleneglycol di-2-ethylhexanoate and laminates thereof with one or more sheets of glass.
Inventors
- 👤 Thomas R. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:55
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10036; B32B17/10605; B32B17/10807; B32B17/10816; C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
26 words
A plastic composition comprising polyvinyl butyral and, in compatible admixture therewith, a plasticizer comprising at least about 10 weight percent tetraethyleneglycol di-2-ethylhexanoate of the formula: ##STR4##
Claim 2
Dependent Claim
26 words
A plastic composition comprising polyvinyl butyral and, in compatible admixture therewith, a plasticizer comprising at least about 10 weight percent tetraethyleneglycol di-2-ethylhexanoate of the formula: ##STR4##
Claim 3
Dependent Claim
24 words
A composition of claim 1 wherein the polyvinyl butyral has a hydroxyl content of about from 15 to 30 percent calculated as polyvinyl alcohol.
Claim 4
Dependent Claim
25 words
A composition of claim 2 wherein the polyvinyl butyral has a hydroxyl content of about from 20 to 25 weight percent, calculated as polyvinyl alcohol.
Claim 5
Dependent Claim
28 words
A composition of claim 1 wherein the plasticizer consists essentially of tetraethyleneglycol di-2-ethylhexanoate in a quantity of about from 20 to 55 parts per hundred of polyvinyl butyral.
Claim 6
Dependent Claim
25 words
A composition of claim 4 wherein the tetraethyleneglycol di-2-ethylhexanoate is present in a quantity of about 30 to 45 parts per hundred of polyvinyl butyral.
Claim 7
Dependent Claim
40 words
A laminar structure comprising at least one layer of glass and a layer of a plastic composition comprising polyvinyl butyral and, in compatible admixture therewith, a plasticizer comprising at least about 10 weight percent tetraethyleneglycol di-2-ethylhexanoate of the formula: ##STR5##
Claim 8
Dependent Claim
40 words
A laminar structure comprising at least one layer of glass and a layer of a plastic composition comprising polyvinyl butyral and, in compatible admixture therewith, a plasticizer comprising at least about 10 weight percent tetraethyleneglycol di-2-ethylhexanoate of the formula: ##STR5##
Claim 9
Dependent Claim
18 words
A laminar structure of claim 6 comprising two layers of glass and one layer of the plastic composition.
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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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |