Patent US3876552A successfully refreshed from Google Patents.
US3876552A
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Solar energy reflecting film structure and process of manufacture therefor
Assignee: EIDP Inc
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Filing: 1972-03-16
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Granted: 1975-04-08
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Expires: 1992-03-16
Abstract
Abstract An optically transparent and solar energy reflecting film structure is provided which is characterized by the presence therein of opaque metal platelets such as those of silver, gold, aluminum or copper. A process also is provided which includes blending opaque metal platelets with an organic polymeric material such as polyvinyl butyral and shaping the resulting blend into a film structure by extruding or compression molding means.
Inventors
- 👤 Robert Edward Moynihan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:40
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10174; B32B15/00; B32B15/04; B32B15/08; B32B15/082; B32B15/20; B32B17/1055; B32B17/10614; B32B17/10761; B32B27/00; B32B27/30; B32B27/306; C; C08; C08K; C08K3/00; C08K3/02; C08K3/08; C09; C09C; C09C1/00; C09C1/62; C09C1/627; C09C1/64; C09C1/644; C09C3/00; C09C3/10; E; E06; E06B; E06B7/00; E06B7/28; B32B2307/00; B32B2307/40; B32B2307/41; B32B2307/412; B32B2311/00; B32B2311/02; B32B2311/04; B32B2311/08; B32B2311/12; B32B2311/24; B32B2329/00; B32B2329/06; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C09C2200/00; C09C2200/10; C09C2200/1054; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/26; Y10T428/268; Y10T428/27; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
66 words
AN ARTICLE OF MANUFACTURE COMPRISING AN OPTICALLY TRANSPARENT AND SOLAR ENERGY REFLECTING FILM STRUCTURE OF POLYVINYL ACETAL RESIN HAVING DISPERSED THEREIN OPAQUE METAL PLATELETS OF A PARTICLE SIZE BETWEEN ABOUT 5 AND ABOUT 43 MICRONS WHEREIN SAID OPAQUE METAL PLATELETS ARE PRESENT IN SAID FILM STRUCTURE IN AN AMOUNT BETWEEN ABOUT 0.005 AND ABOUT 2% BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF SAID FILM STRUCTURE.
Claim 2
Dependent Claim
66 words
AN ARTICLE OF MANUFACTURE COMPRISING AN OPTICALLY TRANSPARENT AND SOLAR ENERGY REFLECTING FILM STRUCTURE OF POLYVINYL ACETAL RESIN HAVING DISPERSED THEREIN OPAQUE METAL PLATELETS OF A PARTICLE SIZE BETWEEN ABOUT 5 AND ABOUT 43 MICRONS WHEREIN SAID OPAQUE METAL PLATELETS ARE PRESENT IN SAID FILM STRUCTURE IN AN AMOUNT BETWEEN ABOUT 0.005 AND ABOUT 2% BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF SAID FILM STRUCTURE.
Claim 3
Dependent Claim
14 words
The article of claim 1 having a thickness of up to about 0.075 inch.
Claim 4
Dependent Claim
16 words
The article of claim 2 having a visible light transmission of at least about 8 percent.
Claim 5
Dependent Claim
25 words
The article of claim 3 wherein the opaque metal platelets are selected from the group consisting of silver, aluminum, gold, copper and copper bronze compositions.
Claim 6
Dependent Claim
13 words
The article of claim 1 wherein said polyvinyl acetal resin is polyvinyl butyral.
Claim 7
Dependent Claim
36 words
The article of claim 1 wherein said opaque metal platelets are present in said film structure in an amount between about 0.01 and about 1% by weight, based upon the total weight of said film structure.
Claim 8
Dependent Claim
88 words
A process of manufacture for making optically transparent and solar energy reflecting film structures which comprises blending opaque metal platelets of a particle size between about 5 and about 43 microns with a polyvinyl acetal resin material and shaping the resulting blend into a film structure at a temperature above the softening point of said polyvinyl acetal thereby to obtain a monolithic film structure having between about 0.005 and about 2% by weight of opaque metal platelets dispersed therein based upon the total weight of said film structure.
Claim 9
Dependent Claim
88 words
A process of manufacture for making optically transparent and solar energy reflecting film structures which comprises blending opaque metal platelets of a particle size between about 5 and about 43 microns with a polyvinyl acetal resin material and shaping the resulting blend into a film structure at a temperature above the softening point of said polyvinyl acetal thereby to obtain a monolithic film structure having between about 0.005 and about 2% by weight of opaque metal platelets dispersed therein based upon the total weight of said film structure.
Claim 10
Dependent Claim
13 words
The process of claim 7 wherein said polyvinyl acetal resin is polyvinyl butyral.
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |