Abstract: Polymer composition comprising an aromatic polyamide, more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates, more than 2 wt. % (based on the total weight of the composition) of at least one white pigment, and/or more than 0.003 wt. % (based on the total weight of the composition) of at least one optical brightener, and more than 1 wt. % (based on the total weight of the composition) of at least one optionally functionalized olefin copolymer.

Abstract: Polymer composition comprising an aromatic polyamide, more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates, more than 2 wt. % (based on the total weight of the composition) of at least one white pigment, and/or more than 0.003 wt. % (based on the total weight of the composition) of at least one optical brightener, and more than 1 wt. % (based on the total weight of the composition) of at least one optionally functionalized olefin copolymer.

Abstract: Polyamide composition very well suited for the manufacture of LED devices comprising: (a) at least a polyamide comprising recurring units derived from at least one C6 and/or at least one C10 diamine and from at least one dicarboxylic acid of the formula HO—C(?O)—R—C(?O)—OH wherein R is a cycloaliphatic moiety; (b) at least a reinforcing filler, and (c) at least a white pigment selected from a group consisting of TiO2, ZnS2, ZnO and BaSO4.

Abstract: A polyester containing polymerized units of hydroquinone; 4,4?-biphenol; and hydroxybenzoic acid; terephthalic acid and optionally isophthalic acid. A method of forming a polyester including first acylating a mixture of hydroquinone; 4,4?-biphenol; terephthalic acid and optionally isophthalic acid; and hydroxybenzoic acid; and then polycondensing the resulting acylated mixture. The polyester is suitable for uses such as lighting where high whiteness, high reflectivity and high heat resistance are desirable.

Abstract: A Power LED device including a reflector and a light emitting diode (LED). The reflector is made of aromatic polyester and/or wholly aromatic polyester.

Abstract: Polymer composition comprising (i) at least one semi-crystalline polymer (SCP) chosen from polyamides, polyaryletherketones, liquid crystal polymers, polyalkylene phthalates, polycarbonates, polyarylene sulphides and polyarylene oxides, and (ii) at least one oxide (OX) chosen from acid oxides of an element having an electronegativity of at most 2.2 and amphoteric oxides, and (iii) at least one nitride (NJ) of an element having an electronegativity of from 1.3 to 2.5. Article comprising at least one part comprising the polymer composition as above described. Part of an article comprising the polymer composition as above described.

Abstract: Polymer composition comprising—an aromatic polyamide, —more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates, —more than 2 wt. % (based on the total weight of the composition) of at least one white pigment, and/or more than 0.003 wt. % (based on the total weight of the composition) of at least one optical brightener, and —more than 1 wt. % (based on the total weight of the composition) of at least one optionally functionalized olefin copolymer. Article comprising said polymer composition. 5 figures.