Abstract: The present invention relates to a polymer composition including at least one polyester and at least one polyamide featuring very high whiteness and whiteness retention after heat treatment suitable for the manufacture of light emitting diode (LED) components.

Abstract: A polymer composition comprising (i) at least one semi-aromatic polyamide having a melting point of at least 270° C., (ii) at least one organophosphorous compound selected from phosphinates, diphosphinates and condensation products thereof, and (iii) at least 0.01 wt. %, based on the total weight of the composition, of calcium oxide.

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 (1) at least one poly(aryletherdisulfone) [polymer (P)] of which more than 50 mole % of the recurring units are recurring units (R1): (1) wherein Ar and Q, equal or different, are divalent radicals comprising at least one aromatic ring, and (2) a combination (AC) of additives composed of at least one fibrous filler (A1), and at least one non fibrous surface modifier (A2) chosen from liquid surface modifiers and particulate surface modifiers. Shaped article comprising the polymer composition, wherein said shaped article is a sliding part suitable for being used in a friction and wear application. Method of manufacturing said shaped article which comprises solution processing, compression molding, machining and/or melt processing the polymer composition.

Abstract: An improvement to the process for electroplating the walls of through holes in a laminated printed wiring board which comprises:(a) contacting said printed wiring board with an aqueous alkaline silicate solution, followed by;(b) contacting said printed wiring board with a dispersion of carbon black comprising:(1) carbon black particles having an average particle diameter of less than about 3.