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encapsulation films comprising triallylcyanurate

Liuyang Sanji Chemical Co.,Ltd | Updated: Nov 19, 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.

  • In a      further preferred embodiment of the present invention,      thecomposition (B) also comprises at least one further      compound selected from the group consisting of crosslinking agents, silane      coupling agents, antioxidants, aging inhibitors, metal oxides, metal      hydroxides, white pigments; being      used as the further compound particularly preferred silane coupling agent.

  • The      proportion of the composition (B) comprised      crosslinking agent is not particularly limited. The      proportion of crosslinker in the composition (B) is,      in particular, from 0.005 to 5 wt .-%, preferably 0.01 to 3 wt .-%, more      preferably 0.05 to 3 wt .-%, more preferably 0.1 to 1.5 wt .-%, in each      based on the mass of all of the composition (B) comprised      polyolefin.

  • As      according to the invention can be used in the composition (B) silane      coupling agent are all silanes into consideration which have an      unsaturated hydrocarbon group and a hydrolyzable group (described, for      example in EP 2436701 B1 . US      5,266,627 ).

  • The      proportion of the composition (B) included silane      coupling agent is not particularly limited. The      proportion of all of the composition (B)included silane      coupling agent is in particular from 0.05 to 5 wt .-%, preferably 0.1 to 2      wt .-%, each based on the mass of all of the composition (B) comprised      polyolefin.

  • The      proportion of the composition (B) included      antioxidants is not particularly limited. The      proportion of all of the composition (B) comprised      antioxidants is in particular from 0.01 to 0.5 wt .-%, preferably 0.05 to      0.3 wt .-%, each based on the mass of all of the composition (B) comprised      polyolefin.

  • The      proportion of the composition (B) comprised      HALS-stabilizers is not particularly limited. The      proportion of all of the composition (B) comprised      HALS stabilizers is in particular from 0.01 to 0.5 wt .-%, preferably 0.05      to 0.3 wt .-%, each based on the mass of all of the composition (B)comprised      polyolefin.

  • The      proportion of the composition (B) included UV      absorber is not particularly limited. The      proportion of all of the composition (B) included UV      absorber is in particular from 0.01 to 0.5 wt .-%, preferably 0.05 to 0.3      wt .-%, each based on the mass of all of the composition (B) comprised      polyolefin.

  • The      proportion of the composition (B) included metal      oxides is not particularly limited. The      proportion of all of the composition (B) included      metal oxides is in particular at 0.01 to 10 wt .-%, preferably 0.05 to 3      wt .-%, each based on the mass of all of the composition (B) comprised      polyolefin.

  • The      proportion of the composition (B) comprised metal      hydroxides is not particularly limited. The      proportion of all of the composition (B) comprised      metal hydroxides is in particular from 0.01 to 10 wt .-%, preferably 0.05      to 3 wt .-%, each based on the mass of all of the composition (B) comprised      polyolefin.

  • The      proportion of the composition (B) comprised of white      pigments is not particularly limited. The      proportion of all of the composition (B) white      pigment is in particular from 5 to 25 wt .-%, preferably 10 to 20 wt .-%,      more preferably 15 wt .-%, each based on the mass of all (by the composition B      ) included polyolefin copolymers.

  • The      polymer composition (B) is used in a further aspect      of the present invention for producing a film for encapsulating an      electronic device, in particular a solar cell.

  • The composition (B) by      first mixing the composition (A) and the respective      additives and the polyolefin copolymer is prepared. This      is done in particular by adding the additives in liquid form, ie, pure or      as a solution in a solvent, to the composition (B) in      a mixer. Thereafter, the mixture is stirred or the mixture is      kept moving until the liquid has been completely absorbed by the polymer      granules. Solvent, if used, are then removed by applying a      vacuum.

  • In a      second step, the polymer formulation is extruded through an extruder into      a film. Here, the composition (B) is      continuously metered via a metering into an extruder in which melting the      polymer and the additives are dispersed by kneading the mixture      homogeneously in the polymer matrix. At      the end of the extruder, the melt is forced through a slot die.After the      die, the film is peeled off, after-cooled, and wound up by a roll mill.

LiuYang SanJi Chemical Co.,Ltd
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