Patent application number | Description | Published |
20080249238 | FLEXIBLE SEMIAROMATIC POLYAMIDES WITH A LOW MOISTURE UPTAKE - The present invention relates to a flexible semiaromatic polyamide composition with a low moisture uptake, made up by weight, the total being 100:
| 10-09-2008 |
20110189419 | POLYAMIDE, COMPOSITION COMPRISING SUCH A POLYAMIDE AND THEIR USES - The invention relates to a polyamide comprising at least two units having the following general formula: 4.Y in which: 4 denotes butanediamine, and Y represents a dicarboxylic acid chosen from a linear or branched aliphatic dicarboxylic acid, a cycloaliphatic diacid and an aromatic diacid, the dicarboxylic acid containing from 7 to 11 carbon atoms, the butanediamine contains carbon of renewable origin, except for the fact that when the polyamide is a copolyamide, it cannot contain 100% by mass of organic carbon derived from renewable raw materials relative to the total mass of polyamide carbon. The invention also relates to a composition comprising this polyamide and the use of this polyamide and of such a composition. | 08-04-2011 |
20110195215 | SEMI-AROMATIC COPOLYAMIDE AND PROCESS FOR PREPARING SAME - The invention relates to a copolyamide comprising at least two units corresponding to the following general formula: | 08-11-2011 |
20120202896 | COMPOSITION INCLUDING A COPOLYAMIDE AND A CROSS-LINKED POLYOLEFIN - The invention relates to a composition including: 45 to 95 wt % of a semi-aromatic copolyamide containing at least two separate units having the following general formulation: A/X.T, where A is selected from among a unit obtained from an amino acid, a unit obtained from a lactam, and a twit having the formula (diamine Ca).(diacid Cb), and XT denotes a unit obtained from the polycondensation of a diamine in Cx and from terephthalic acid, with x being the number of carbon atoms of the diamine in Cx, said copolyamide having a polymoleoularity index, noted Ip, of less than or equal to 3.5, measured by gel permeation chromatography, and an amino chain end content of between 0.020 mcg/g and 0.058 mcg/g; and 5 to 55 wt % of at least one cross-linked polyolefin. The invention also relates to a method for preparing said composition and to the uses thereof. | 08-09-2012 |
20120329944 | SEMIAROMATIC POLYAMIDE, PROCESS FOR PREPARING SAME, COMPOSITION COMPRISING SUCH A POLYAMIDE AND USES THEREOF - The invention relates to a semiaromatic polyamide, to the process for preparing same, to a composition comprising such a polyamide and to the uses thereof. | 12-27-2012 |
20130225786 | COPOLYAMIDES - The invention relates to a copolyamide comprising units resulting from the polycondensation reaction of the following precursors:
| 08-29-2013 |
20140171563 | Composition including a semi-aromatic polyamide and uses thereof, in particular for a reflector having a light-emitting diode - The invention relates to a composition including 30 to 97 wt % of at least one semi-aromatic polyamide, 2 to 50 wt % of white pigments, 0 to 50 wt % of strengthening agents, 0.1, to 10 wt % of at least one metal hydroxide and/or of at least one metal oxide other than a metal oxide, and up to 3 wt % of an organic phosphite. The invention also relates to the use of said composition for forming all or part of an electronic component, as well as to a reflector having a light-emitting diode (LED) and entirely or partially consisting of a material obtained form said composition. | 06-19-2014 |
20140212613 | SEMIAROMATIC POLYAMIDE COMPRISING A CHAIN ENDING - The invention relates to a copolyamide comprising at least two different units corresponding to the following general formulation: | 07-31-2014 |
20140316063 | THERMOPLASTIC COMPOSITE MATERIAL REINFORCED WITH SYNTHETIC FIBERS AND MANUFACTURING PROCESS - A method for producing a composite material, including an assembly of one or a plurality of synthetic reinforcement fibres, impregnated with at least one thermoplastic polymer having a vitreous transition temperature Tg greater than or equal to 80° C. including: i) a step of impregnating said assembly with a precursor composition in the molten state and including: a) at least one prepolymer P(X)n of said thermoplastic polymer, including a molecular chain P having, at the ends n thereof, identical reactive functions X, said prepolymer having a semi-aromatic and/or semi-cycloaliphatic structure, b) at least one chain extender including two identical functions Y, which are reactive with at least one of said functions X; ii) a step of polymerisation by mass (poly)addition, in the molten state, of said prepolymer with said chain extender, with said thermoplastic polymer of the thermoplastic matrix being the result of said polymerisation by mass polyaddition. | 10-23-2014 |
20150099080 | SEMIAROMATIC POLYAMIDE COMPRISING A CHAIN ENDING - The invention relates to a copolyamide comprising at least two different units corresponding to the following general formulation: | 04-09-2015 |
20150126646 | THERMOPLASTIC COMPOSITE MATERIAL MADE FROM NATURAL FIBERS - A method of producing a composite material, comprising an assembly of natural fibres, impregnated with an amorphous or semi-crystalline thermoplastic polymer, said method including: i) a step of impregnating said assembly with a precursor composition in the molten state and including: a) at least one prepolymer P(X)n of said thermoplastic polymer, having a molecular chain P having, at the ends of same, n reactive functions X, with n ranging from 1 to 3, in particular n being 1 or 2, and preferably 2 b) at least one chain extender Y-A-Y including reactive functions Y with at least one of said functions X ii) a step of polymerisation by mass (poly)addition, in the molten state, of said prepolymer with said chain extender with: said thermoplastic polymer being the result of said polymerisation by mass polyaddition and said impregnation i) and polymerisation ii) taking place at a temperature lower than 250° C. | 05-07-2015 |
20150225505 | COPOLYAMIDE, COMPOSITION COMPRISING SUCH A COPOLYAMIDE AND USES THEREOF - A copolyamide including at least two different repeat units having the following general formulation: A/X.Y, in which A is an aliphatic repeat unit selected from a unit obtained from at least one amino acid and a unit obtained from at least one lactam, and X.Y is a repeat unit obtained from the polycondensation of at least one cycloaliphatic diamine and at least one dicarboxylic acid. The proportion by weight of unit A is greater than or equal to 91%. Also, a composition including such a copolyamide and uses thereof, in particular in the soles of sports footwear. | 08-13-2015 |