Moulding compounds for the production of solar cell modules

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 5/20 (2006.01) H01L 31/048 (2006.01)

Patent

CA 2743657

The invention relates to a molding compound, comprising a) at least one polyalkyl(meth)acrylate and b) at least one compound according to formula (I), where the groups R1 and R2 independently represent an alkyl or cycloalkyl group with 1 to 20 carbon atoms, wherein the molding compound further comprises c) at least one infrared absorber, wherein the molding compound has .cndot. a transmission of less than 89% at 500 nm, .cndot. a transmission of less than 80% at 1000 nm .cndot. a transmission of less than 70% at 1150 nm, and .cndot. a transmission of less than 77% at 1600 nm, each measured by means of infrared spectroscopy at 25°C on 3mm slides. The molding compound can be particularly used for the production of solar cell modules.

L'invention porte sur une matière à mouler comprenant a) au moins un poly(méth)acrylate d'alkyle et b) au moins un composé de formule (I), dans laquelle les radicaux R1 et R2 représentent indépendamment un radical alkyle ou cycloalkyle avec 1 à 20 atomes de carbone, les matières à mouler contenant en outre c) au moins un agent absorbant dans l'infrarouge, les matières à mouler présentant pour 500 nm une transmission inférieure à 89 %, pour 1000 nm une transmission inférieure à 80 %, pour 1150 nm une transmission inférieure à 70 % et pour 1600 nm une transmission inférieure à 77 %, à chaque fois mesurée par spectroscopie infrarouge à 25°C sur une plaquette de 3 millimètres. La matière à mouler est utilisée en particulier pour la fabrication de modules photovoltaïques.

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