Patent JPS5638484A successfully refreshed from Google Patents.
US4035549A
Expired / Lapsed
US
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Interlayer for laminated safety glass
Assignee: Monsanto Co
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Filing: 1975-05-19
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Granted: 1977-07-12
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Expires: 1995-05-19
Abstract
Abstract Disclosed herein is an improved interlayer for laminated safety glass. The improved interlayer is characterized by having at least one surface which is more printable without sacrificing the surface roughness required to prevent blocking of the sheet and to facilitate de-airing of laminates prepared from the interlayer.
Inventors
- 👤 George A. Kennar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:33
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10559; B32B17/10577; B32B17/10165; B32B17/10247; B32B17/10256; B32B17/10275; B32B17/10339; B32B17/10587; B32B17/10761; B32B17/1077; B32B17/10807; B32B17/10981; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/31504; Y10T428/31551; Y10T428/31598; Y10T428/31601; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
An interlayer for laminated safety glass wherein at least one surface of the interlayer is characterized by having: A. an Arithmetic Average roughness in the range of from 12 to 18× 10 - 5 inches as calculated around a roughness mean centerline drawn through the peaks and valleys on the surface of the interlayer; B. a Roughness Height in the range of from 48× 10 - 5 to 72× 10 - 5 inches; wherein at a distance of 0.4 mil or less from the mean centerline going in the direction to the center of the interlayer there are substantially no valleys on the surface of the interlayer.
Claim 2
Dependent Claim
107 words
An interlayer for laminated safety glass wherein at least one surface of the interlayer is characterized by having: A. an Arithmetic Average roughness in the range of from 12 to 18× 10 - 5 inches as calculated around a roughness mean centerline drawn through the peaks and valleys on the surface of the interlayer; B. a Roughness Height in the range of from 48× 10 - 5 to 72× 10 - 5 inches; wherein at a distance of 0.4 mil or less from the mean centerline going in the direction to the center of the interlayer there are substantially no valleys on the surface of the interlayer.
Claim 3
Dependent Claim
17 words
An interlayer as in claim 1 wherein the characterized surface is printed with a gradient color band.
Claim 4
Dependent Claim
48 words
An interlayer as in claim 2 wherein the interlayer is prepared from plasticized polyvinyl butyral wherein the polyvinyl butyral contains from 5 to 30 percent by weight of hydroxyl groups, calculated as polyvinyl alcohol and 0 to 40 percent by weight of ester groups calculated as polyvinyl ester.
Claim 5
Dependent Claim
13 words
An interlayer as in claim 1 wherein the interlayer is prepared from polyurethane.
Claim 6
Dependent Claim
21 words
An interlayer as in claim 2 wherein the interlayer has a thickness in the range of from 10 to 60 mils.
Claim 7
Dependent Claim
142 words
A plasticized polyvinyl butyral interlayer for laminated safety glass wherein the polyvinyl butyral contains from 9 to 25 percent by weight of hydroxyl groups calculated as polyvinyl alcohol and 0 to 3 percent by weight of acetate groups calculated as polyvinyl acetate wherein at least one surface of the interlayer is characterized by having: A. an Arithmetic Average roughness in the range of from 12 to 18× 10 - 5 inches as calculated around a roughness mean centerline drawn through the peaks and valleys on the surface of the interlayer; B. a Roughness Height in the range of from 48×10 - 5 to 72× 10 - 5 inches; wherein at a distance of 0.4 mil or less from the mean centerline going in the direction to the center of the interlayer there are substantially no valleys on the surface of the interlayer.
Claim 8
Dependent Claim
142 words
A plasticized polyvinyl butyral interlayer for laminated safety glass wherein the polyvinyl butyral contains from 9 to 25 percent by weight of hydroxyl groups calculated as polyvinyl alcohol and 0 to 3 percent by weight of acetate groups calculated as polyvinyl acetate wherein at least one surface of the interlayer is characterized by having: A. an Arithmetic Average roughness in the range of from 12 to 18× 10 - 5 inches as calculated around a roughness mean centerline drawn through the peaks and valleys on the surface of the interlayer; B. a Roughness Height in the range of from 48×10 - 5 to 72× 10 - 5 inches; wherein at a distance of 0.4 mil or less from the mean centerline going in the direction to the center of the interlayer there are substantially no valleys on the surface of the interlayer.
Claim 9
Dependent Claim
17 words
An interlayer as in claim 6 wherein the characterized surface is printed with a gradient color band.
Claim 10
Dependent Claim
21 words
An interlayer as in claim 6 wherein the interlayer has a thickness in the range of from 10 to 60 mils.
Claim 11
Dependent Claim
148 words
A plasticized polyvinyl butyral interlayer for laminated safety glass wherein the polyvinyl butyral contains from 9 to 25 percent by weight of hydroxyl groups calculated as polyvinyl alcohol and 0 to 3 percent by weight of acetate groups calculated as polyvinyl acetate having a gradient band printed thereon wherein the printed surface of the interlayer is characterized by having: A. an Arithmetic Average roughness in the range of from 12 to 18× 10 - 5 inches as calculated around a roughness mean centerline drawn through the peaks and valleys on the surface of the interlayer; B. a Roughness Height in the range of from 48× 10 - 5 to 72× 10 - 5 inches; wherein at a distance of 0.4 mil or less from the mean centerline going in the direction to the center of the interlayer there are substantially no valleys on the surface of the interlayer.
Claim 12
Dependent Claim
148 words
A plasticized polyvinyl butyral interlayer for laminated safety glass wherein the polyvinyl butyral contains from 9 to 25 percent by weight of hydroxyl groups calculated as polyvinyl alcohol and 0 to 3 percent by weight of acetate groups calculated as polyvinyl acetate having a gradient band printed thereon wherein the printed surface of the interlayer is characterized by having: A. an Arithmetic Average roughness in the range of from 12 to 18× 10 - 5 inches as calculated around a roughness mean centerline drawn through the peaks and valleys on the surface of the interlayer; B. a Roughness Height in the range of from 48× 10 - 5 to 72× 10 - 5 inches; wherein at a distance of 0.4 mil or less from the mean centerline going in the direction to the center of the interlayer there are substantially no valleys on the surface of the interlayer.
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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) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |