The present invention relates to a backsheet for photovoltaic modules comprising a polymeric layer comprising an aliphatic polyamide comprising 1,10-decanedioic acid. Examples of such aliphatic polyamides are polyamide 4,10, polyamide 5,10 or polyamide 6,10. Preferably polyamide 4,10 is present in the rear layer of the backsheet. A polyolefin layer is preferably present in the core layer of the backsheet. It is however also possible that the polyamide is present in the core layer and polyolefin is present in the rear layer of the backsheet. The polyolefin is preferably chosen from the group consisting of polyethylene, polypropylene or ethylene-propylene copolymers. More preferably the polyolefin is polypropylene. The backsheet preferably comprises at least a further polymeric layer comprising a polymer selected from the group consisting of an optionally functionalized polyolefin such as a maleic anhydride functionalized polypropylene homo or copolymer. The present invention further relates to a photovoltaic module containing essentially, in order of position from the front-sun facing side to the back non-sun-facing side, a transparent pane, a front encapsulant layer, a solar cell layer comprised of one or more electrically interconnected solar cells, a back encapsulant layer and the back-sheet according to the present invention.

The present invention relates to a backsheet for photovoltaic modules comprising a polymeric layer comprising an aliphatic polyamide comprising 1,10-decanedioic acid. Examples of such aliphatic polyamides are polyamide 4,10, polyamide 5,10 or polyamide 6,10. Preferably polyamide 4,10 is present in the rear layer of the backsheet. A polyolefin layer is preferably present in the core layer of the backsheet. It is however also possible that the polyamide is present in the core layer and polyolefin is present in the rear layer of the backsheet. The polyolefin is preferably chosen from the group consisting of polyethylene, polypropylene or ethylene-propylene copolymers. More preferably the polyolefin is polypropylene. The backsheet preferably comprises at least a further polymeric layer comprising a polymer selected from the group consisting of an optionally functionalized polyolefin such as a maleic anhydride functionalized polypropylene homo or copolymer. The present invention further relates to a photovoltaic module containing essentially, in order of position from the front-sun facing side to the back non-sun-facing side, a transparent pane, a front encapsulant layer, a solar cell layer comprised of one or more electrically interconnected solar cells, a back encapsulant layer and the back-sheet according to the present invention.

The present invention relates to the field of polymers used to form coatings at the surface of supports.

More particularly, the invention relates to a polymer having adhesion properties, in particular with regard to an organic or inorganic support, characterized in that it comprises at least one and preferably several consecutive or non-consecutive structural units of formula (I):

##STR00001##

in which: B represents a carbonyl or —NR′— unit with R′ representing a hydrogen atom, a C.sub.1 to C.sub.6 alkyl radical, or a C.sub.5 to C.sub.6 aryl, carbamate or acyl radical; and R represents: a hydrogen atom, a linear or branched, saturated or unsaturated C.sub.1 to C.sub.6 hydrocarbon-based radical which, where appropriate, is substituted with one or more halogen atoms, a C.sub.5 to C.sub.6 aryl radical, or an acyl, acyloxy, alkoxycarbonyl or cyano radical.

A copolyamide-based powder intended for forming a coating on a surface, having an inherent viscosity of greater than or equal to 0.8 (g/100 g).sup.−1, in which the copolyamide has a melting point of less than or equal to 160° C. Also, the use of such a powder for coating a surface, the coating having an inherent viscosity of greater than or equal to 0.8 (g/100 g).sup.−1, and also a process for coating a surface using such a powder.

A copolyamide-based powder intended for forming a coating on a surface, having an inherent viscosity of greater than or equal to 0.8 (g/100 g).sup.−1, in which the copolyamide has a melting point of less than or equal to 160° C. Also, the use of such a powder for coating a surface, the coating having an inherent viscosity of greater than or equal to 0.8 (g/100 g).sup.−1, and also a process for coating a surface using such a powder.

The present invention relates to a polyamide (PA) comprising recurring units X, Y, and Z and is represented by the following formula (1): wherein—n.sub.x, n.sub.y and n.sub.z are respectively the mole percent (mol. %) of each recurring units X, Y and Z; —10 mol %≤n.sub.x≤90 mol %; —0 mol %≤n.sub.y≤90 mol %; —0 mol %≤n.sub.z≤90 mol %; —n.sub.x+n.sub.y+n.sub.z≤100 mol. %; and —at least one of n.sub.y and n.sub.z is greater than 0 mol. %, and wherein—R.sub.1 is selected from the group consisting of a hydrogen, an alkyl, or an aryl—R′i, at each location, is independently selected from the group consisting of an alkyl, an aryl, an alkali or alkaline earth metal sulfonate, an alkyl sulfonate, and a quaternary ammonium; —i is an integer from 0 to 10; —R.sub.2 is selected from the group consisting of a bond, a C.sub.1-C.sub.15 alkyl and a C.sub.6-C.sub.30 aryl, optionally comprising one or more heteroatoms (e.g. O, N or S) and optionally substituted with one or more substituents selected from the group consisting of halogen, hydroxy (—OH), sulfo (—SO.sub.3M), C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.6 alkylthio, C.sub.1-C.sub.6 acyl, formyl, cyano, C.sub.6-C.sub.15 aryloxy and C.sub.6-C.sub.15 aryl; —R.sub.3 is selected from the group consisting of a C.sub.1-C.sub.20 alkyl, a phenyl, an indanyl, and a napthyl, optionally comprising one or more heteroatoms (e.g. O, N or S) and optionally substituted with one or more substituents selected from the group consisting of halogen, hydroxy (—OH), sulfo (—SO.sub.3M), C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.6 alkylthio, C.sub.1-C.sub.6 acyl, formyl, cyano, C.sub.6-C.sub.15 aryloxy and C.sub.6-C.sub.15 aryl; and —R.sub.4 is selected from the group consisting of a linear or branched C.sub.6-C.sub.14 alkyl, optionally comprising one or more heteroatoms (e.g. O, N or S) and optionally substituted with one or more substituents selected from the group consisting of a halogen, hydroxy (—OH), sulfo (—SO.sub.3M), C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.6 alkylthio, C.sub.1-C.sub.6 acyl, formyl, cyano, and C.sub.6-C.sub.15 aryloxy and C.sub.6-C.sub.15 aryl; and —M in each of R.sub.2 to R.sub.4 is independently selected from the group consisting of H, Na, K, Li, Ag, Zn, Mg and Ca; with the provisios that —if recurring unit Y is formed from the condensation of p-xylylene diamine and a C12 dicarboxylic acid then: —30 mol %≤n.sub.x≤90 mol %; —0 mol %≤n.sub.y≤70 mol %; and —0 mol %≤n.sub.z≤70 mol %; —n.sub.x+n.sub.y+n.sub.z≤100 mol. %; and —If recurring unit Y is formed from the condensation of terephthalic acid with a diamine, R.sub.2 is selected from the group cons

The present invention relates to a polyamide (PA) comprising recurring units X, Y, and Z and is represented by the following formula (1): wherein—n.sub.x, n.sub.y and n.sub.z are respectively the mole percent (mol. %) of each recurring units X, Y and Z; —10 mol %≤n.sub.x≤90 mol %; —0 mol %≤n.sub.y≤90 mol %; —0 mol %≤n.sub.z≤90 mol %; —n.sub.x+n.sub.y+n.sub.z≤100 mol. %; and —at least one of n.sub.y and n.sub.z is greater than 0 mol. %, and wherein—R.sub.1 is selected from the group consisting of a hydrogen, an alkyl, or an aryl—R′i, at each location, is independently selected from the group consisting of an alkyl, an aryl, an alkali or alkaline earth metal sulfonate, an alkyl sulfonate, and a quaternary ammonium; —i is an integer from 0 to 10; —R.sub.2 is selected from the group consisting of a bond, a C.sub.1-C.sub.15 alkyl and a C.sub.6-C.sub.30 aryl, optionally comprising one or more heteroatoms (e.g. O, N or S) and optionally substituted with one or more substituents selected from the group consisting of halogen, hydroxy (—OH), sulfo (—SO.sub.3M), C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.6 alkylthio, C.sub.1-C.sub.6 acyl, formyl, cyano, C.sub.6-C.sub.15 aryloxy and C.sub.6-C.sub.15 aryl; —R.sub.3 is selected from the group consisting of a C.sub.1-C.sub.20 alkyl, a phenyl, an indanyl, and a napthyl, optionally comprising one or more heteroatoms (e.g. O, N or S) and optionally substituted with one or more substituents selected from the group consisting of halogen, hydroxy (—OH), sulfo (—SO.sub.3M), C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.6 alkylthio, C.sub.1-C.sub.6 acyl, formyl, cyano, C.sub.6-C.sub.15 aryloxy and C.sub.6-C.sub.15 aryl; and —R.sub.4 is selected from the group consisting of a linear or branched C.sub.6-C.sub.14 alkyl, optionally comprising one or more heteroatoms (e.g. O, N or S) and optionally substituted with one or more substituents selected from the group consisting of a halogen, hydroxy (—OH), sulfo (—SO.sub.3M), C.sub.1-C.sub.6 alkoxy, C.sub.1-C.sub.6 alkylthio, C.sub.1-C.sub.6 acyl, formyl, cyano, and C.sub.6-C.sub.15 aryloxy and C.sub.6-C.sub.15 aryl; and —M in each of R.sub.2 to R.sub.4 is independently selected from the group consisting of H, Na, K, Li, Ag, Zn, Mg and Ca; with the provisios that —if recurring unit Y is formed from the condensation of p-xylylene diamine and a C12 dicarboxylic acid then: —30 mol %≤n.sub.x≤90 mol %; —0 mol %≤n.sub.y≤70 mol %; and —0 mol %≤n.sub.z≤70 mol %; —n.sub.x+n.sub.y+n.sub.z≤100 mol. %; and —If recurring unit Y is formed from the condensation of terephthalic acid with a diamine, R.sub.2 is selected from the group cons

The invention is related to a hydrated silicone hydrogel contact lens having a layered structural configuration: a lower water content silicone hydrogel core (or bulk material) completely covered with a layer of a higher water content hydrogel totally or substantially free of silicone. A hydrated silicone hydrogel contact lens of the invention possesses high oxygen permeability for maintaining the corneal health and a soft, water-rich, lubricious surface for wearing comfort.

The invention is related to a hydrated silicone hydrogel contact lens having a layered structural configuration: a lower water content silicone hydrogel core (or bulk material) completely covered with a layer of a higher water content hydrogel totally or substantially free of silicone. A hydrated silicone hydrogel contact lens of the invention possesses high oxygen permeability for maintaining the corneal health and a soft, water-rich, lubricious surface for wearing comfort.

The present disclosure relates to selective laser sintering printing and thermally conductive polymers used therein. Also described are processes for forming an article using selective laser sintering techniques.