Halogen-free, fireproof, transparent thermoplastic compositions having high thermomechanical strength, in particular for encapsulation in photovoltaic modules

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The Arkema France patent solves the following problem:

Our analysis of this patent is as follows:

Arkema France’s patent US 9331215 B2 deals with Halogen-free, fireproof, transparent thermoplastic compositions having high thermomechanical strength, in particular for encapsulation in photovoltaic modules.
A transparent, fireproof thermoplastic composition which is free from halogen compounds and include a polyamide-block graft copolymer formed a polyolefin backbone and, on average, at least one polyamide graft. The grafts attached to the backbone by the radicals of an unsaturated monomer (X) has a function able to react in a polyamide, and the radicals of the unsaturated monomer (X) is attached to the roots the backbone by grafting or co-polymerisation of the double bond. composition includes, as a weight percentage of the total composition: 90 to 99 wt% of polyamide-block graft copolymer, and 1 to 10 wt% of metal salts of phosphoric acid.

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