US4374955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-Butyl acrylate polymer composition for solar cell encapsulation and method
Assignee: California Institute of Technology
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Filing: 1980-06-11
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Granted: 1983-02-22
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Expires: 2000-06-11
Abstract
Abstract A polymer syrup for encapsulating solar cell assemblies. The syrup includes uncrosslinked poly(n-butyl)acrylate dissolved in n-butyl acrylate monomer. Preparation of the poly(n-butyl)acrylate and preparation of the polymer syrup is disclosed. Methods for applying the polymer syrup to solar cell assemblies as an encapsulating pottant are described. Also included is a method for solar cell construction utilizing the polymer syrup as a dual purpose adhesive and encapsulating material.
Inventors
- 👤 Amitava Gupta
- 👤 John D. Ingham
- 👤 Andre H. Yavrouian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
C; C09; C09J; C09J4/00; C09J4/06; C08; C08F; C08F265/00; C08F265/04; C08F265/06; H; H10; H10F; H10F19/00; H10F19/80; H10F19/804; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
36 words
A polymer syrup comprising: 40% to 70% by weight of a linear, uncrosslinked poly (n-butyl) acrylate prepolymer having a molecular weight between 100,000 and 600,000 dissolved in 30% to 60% by weight of n-butyl acrylate monomer.
Claim 2
Dependent Claim
36 words
A polymer syrup comprising: 40% to 70% by weight of a linear, uncrosslinked poly (n-butyl) acrylate prepolymer having a molecular weight between 100,000 and 600,000 dissolved in 30% to 60% by weight of n-butyl acrylate monomer.
Claim 3
Dependent Claim
13 words
A polymer syrup according to claim 1 which further includes a polymerization initiator.
Claim 4
Dependent Claim
13 words
A polymer syrup according to claim 1 wherein said polymerization initiator is azoisobutyronitrile.
Claim 5
Dependent Claim
22 words
A polymer syrup according to claim 1 wherein said poly acrylate and said acrylate monomer are present in equal amounts by weight.
Claim 6
Dependent Claim
17 words
A polymer syrup according to claim 1 which contains 1-5 weight percent of a polymerizable ultraviolet stabilizer.
Claim 7
Dependent Claim
16 words
A polymer syrup according to claim 5 wherein said polymerizable ultraviolet stabilizer is 5-vinyl, 2-hydroxyphenyl benzotriazole.
Claim 8
Dependent Claim
16 words
A polymer syrup according to claim 1 in which the prepolymer is prepared in cyclohexane solvent.
References Cited (Backward Citations)
US2120006A
Cited
US3004896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |