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US4549033A Expired / Lapsed US ⏱️ 0.0 years remaining

Encapsulation of photocells with acrylic prepolymer

Assignee: Arkema France SA
•
Filing: 1983-09-27
•
Granted: 1985-10-22
•
Expires: 2003-09-27
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Abstract

Abstract Acrylic prepolymer comprising: from 10 to 50% by weight of units derived from at least one alkyl acrylate, the alkyl group having from 4 to 12 carbon atoms, from 30 to 60% by weight of units derived from at least one alkyl methacrylate, the alkyl group having from 1 to 5 carbon atoms, and from 10 to 40% by weight of units derived from methyl acrylate. The prepolymer is used to encapsulate photocells, connected to one another by conducting wires and positioned on a support plate, by casting a resin into the space located between the support plate and a second protective plate, the resin being obtained by mixing 100 parts of the acrylic prepolymer, from 0.1 to 4 parts of a vanadium arenesulphonate and from 0.5 to 4 parts of a free-radical initiator, at a temperature between 10° and 70° C. and for a sufficient time to solidify the polymeric resin at the temperature selected.

Inventors

  • 👤 Michel Avenel
  • 👤 Paul Evrard
  • 👤 Jean-Paul Leca

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 23:13
CPC Classifications
H; H10; H10F; H10F19/00; H10F19/80; H10F19/804; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1802; C08F220/1808; Y; Y02; Y02E; Y02E10/00; Y02E10/50

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 160 words
A process for producing a panel encapsulating a plurality of photocells connected to one another by conducting wires comprising positioning said photocells in a space between a support plate and a second protective plate, mixing 100 parts of an acrylic prepolymer comprising: (1) from 10 to 50% by weight of units derived from at least one alkyl acrylate, the alkyl group having from 4 to 12 carbon atoms, (2) from 30 to 60% by weight of units derived from at least one alkyl methacrylate, the alkyl group having from 1 to 5 carbon atoms, and (3) from 10 to 40% by weight of units derived from methyl acrylate, with from 0.1 to 4 parts of vanadium arenesulphonate, and from 0.5 to 4 parts of a free-radical initiator to form a polymeric resin, casting said resin into said space, and maintaining said cast resin at a temperature between 10° and 70° C. for a sufficient time to solidify the polymeric resin.
Claim 2
Dependent Claim 160 words
A process for producing a panel encapsulating a plurality of photocells connected to one another by conducting wires comprising positioning said photocells in a space between a support plate and a second protective plate, mixing 100 parts of an acrylic prepolymer comprising: (1) from 10 to 50% by weight of units derived from at least one alkyl acrylate, the alkyl group having from 4 to 12 carbon atoms, (2) from 30 to 60% by weight of units derived from at least one alkyl methacrylate, the alkyl group having from 1 to 5 carbon atoms, and (3) from 10 to 40% by weight of units derived from methyl acrylate, with from 0.1 to 4 parts of vanadium arenesulphonate, and from 0.5 to 4 parts of a free-radical initiator to form a polymeric resin, casting said resin into said space, and maintaining said cast resin at a temperature between 10° and 70° C. for a sufficient time to solidify the polymeric resin.
Claim 3
Dependent Claim 15 words
A process according to claim 1, wherein said time is between 1 and 24 hours.
Claim 4
Dependent Claim 32 words
A process according to claim 1, wherein the resulting solidified polymeric resin has a density, at 20° C., of between 1.10 and 1.12 and a refractive index of between 1.47 and 1.48.
Claim 5
Dependent Claim 22 words
A process according to claim 1, wherein the resulting solidified polymeric resin has a Shore A hardness of between 20 and 35.
Claim 6
Dependent Claim 12 words
A panel of encapsulated photocells made by the process of claim 1.

References Cited (Backward Citations)

FR2394895A1 Cited
US4246382A Cited
US4321418A Cited
US4239555A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-10-21 1989-04-22 1989-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-10-21 1993-04-22 1993-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-10-21 1997-04-22 1997-10-22 $7700.00 Window Closed / Lapsed

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