Cover net systems for encapsulation films comprising triallylisocyanurate

- Nov 16, 2018-


  • The      present invention relates to a first composition (A) comprising      (i) is triallyl isocyanurate and triallyl cyanurate. Besides,      the present invention, the first composition (A) and      at least one polyolefin copolymer also relates to a      second composition (B) comprising. Finally, the present invention relates to the use of      the composition (B) for producing a film for      encapsulating an electronic device, in particular a solar cell.

Background of the Invention Detailed Description of the Invention

  • The      Covernetzersystem invention is therefore a composition (A)comprising      triallyl isocyanurate (= "TAIC") and triallyl cyanurate (=      "TAC"), wherein the triallyl cyanurate in an amount of 1.0 to      50.0 mol .-%, based on the amount of the triallyl isocyanurate is present,      ,

  • The      ratio of the amount of TAC in the composition (A) based      on the amount of TAIC in the composition (A) is in      the range 1.0 to 50.0 mol .-%, in particular 2.0 to 40 mol .-%, preferably      2.0 to 25 mol. -%, more preferably 2.0 to 15 mol .-%, more preferably 2.0      to 4.2 mol .-%, most preferably 3.0 mol .-% to 4.0 mol .-%.

  • It      has been found in the course of the present invention that an increase of      the specific resistance in particular already at the addition of small      amounts of TAC can be detected, namely, when the composition (A)relative      the amount of TAC is located on the amount of TAIC at 1 mol .-% ,In view      of the economic use of TAC and TAIC other hand, a proportion amount of TAC      based on the amount of TAIC of 50.0 mol .-% is a preferred upper limit.

  • Accordingly,      the present invention also relates to a composition (B)comprising      at least one polyolefin and the composition of the invention(A).

  • More      preferably, polyolefin copolymer according to the invention in      thecomposition (B) is an ethylene-vinyl acetate      copolymer.

  • The      proportion of the composition (B) comprised composition (A) is      not particularly limited. The      proportion of the composition (A) in      thecomposition (B) is in particular in the range of 0.05      to 10 wt .-%, preferably in the range of 0.1 to 5 wt .-%, more preferably      in the range of 0.2 to 3 wt .-%, more preferably 0.3 to 1.5 wt .-%, more      preferably at 0.5% by weight, each based on the mass of all of the composition (B) comprised      polyolefin.

  • The composition (B) is      according to the invention for producing an encapsulation film for      electronic devices, such as solar cells. It      is subjected to in the solar module lamination of a crosslinking reaction.

  • In a      preferred embodiment of the present invention, the composition (B)therefore      also comprises an initiator selected from the group consisting of peroxide      compounds, azo compounds, photoinitiators. More      preferably, the initiator is selected from the group consisting of      peroxide compounds, azo compounds. Examples      of this are " described ".

  • The      mass of the peroxide compound or azo compound, preferably of the peroxide      compound is used based on the weight of the polyolefin copolymer is not      particularly limited. The      peroxide compound or azo compound, preferably, the peroxide compound, in      particular in an amount of 0.05 to 10 wt .-%, preferably 0.1 to 5 wt .-%,      more preferably 0.5 to 2 wt .-%, each based on the mass of all of      the composition (B) comprised polyolefin employed.

  • The      photoinitiator is preferably in an amount of 0.05 to 10 wt .-%, preferably      0.1 to 5 wt .-%, more preferably 0.2 to 3 wt .-%, more preferably 0.25 to      1 wt .-%, each based on the mass of all of the composition (B)comprised      polyolefin employed.