Abstract: The present invention relates to a molding composition comprising, by weight: a) from 50% to 99% of a semicrystalline aliphatic polyamide exhibiting an inherent viscosity of less than or equal to 1.10, in particular of less than or equal to 1.00, in particular of less than or equal to 0.95, especially of less than or equal to 0.9, as determined according to the standard ISO 307:2007 but while using m-cresol instead of sulfuric acid, a temperature of 20° C. and a concentration of 0.5% by weight, b) from 1% to 50% of recycled carbon fibers exhibiting a mean length of less than or equal to 6 mm before compounding, said recycled carbon fibers being surface-coated (sized) with a polyamide, in particular an aliphatic polyamide, c) from 0% to 5% of at least one additive, the sum of the components a), b) and c) being equal to 100%.

Abstract: The present invention relates to a process for irradiating a processed surface (5) of a processed substrate (1) so as to obtain a predefined temperature profile, the processed surface (5) comprising a first area (11) and a second area (13), said first area (11) having a first combination of optical properties and thermal properties, and said second area (13) having a second combination of optical properties and thermal properties, said first combination and second combination being different. A further object of the invention is a system (21) for irradiating a processed surface (5) of a processed substrate (1) so as to obtain a predefined temperature profile, the processed surface (5) comprising a first area (11) and a second area (13), said first area (11) having a first combination of optical properties and thermal properties, and said second area (13) having a second combination of optical properties and thermal properties, said first combination and second combination being different.

Abstract: The present invention relates to a molding composition, comprising by weight: (A) 38 to 87% of at least one semi-crystalline aliphatic polyamide, (B) 3 to 25% of a hollow glass reinforcement, (C) 5% to 30% glass fibers, (D) 5 to 15% of at least one impact modifier chosen from a polyolefin, a polyether block amide (PEBA-1) and a mixture thereof, the polyolefin and the PEBA-1 having a flexural modulus less than 200 MPa, in particular less than 100 MPa, as measured according to standard ISO 178:2010, at 23° C., (E) 0 to 2% by weight of at least one additive, the sum of the proportions of each constituent of said composition being equal to 100%, the density of the composition being less than 1.12 g/cm3.

Abstract: A molding composition including by weight: (A) 45% to 90%, particularly 60% to 80%, more particularly 62.5% to 77.5% of at least one copolyamide with amide units (Bal) and polyether units (Ba2), (B) 5% to 30%, particularly 10% to 20%, more particularly 12.5% to 17.5% of carbon fibers, (C) 5% to 20%, particularly 10% to 15% of a hollow glass reinforcement, (D) 0% to 5%, preferably 0.1% to 2% of at least one additive, the sum of the proportions of each constituent (A)+(B)+(C)+(D) of the composition being equal to 100%.

Abstract: The present invention relates to a moulding composition comprising by weight: (A) 65% to 98%, in particular 65% to 95%, of at least one copolyamide with amide units (Ba1) and polyether units (Ba2), (B) 2% to 30%, in particular 5% to 30%, of hollow glass reinforcement, (C) 0 to 5%, preferably 0.1% to 2%, of at least one additive, the sum of the proportions of each constituent (A) + (B) + (C) of the composition being equal to 100%.

Abstract: A mixture of solid and hollow glass reinforcers with an alloy of at least one polyamide and of at least one polyolefin, the mixture of solid and hollow glass reinforcers including from 5% to 60% by weight of hollow glass beads relative to the sum of the solid and hollow glass reinforcers, the alloy-mixture proportions being from more than 50% to 75% of said mixture of solid and hollow glass reinforcers, to prepare a composition having a modulus, when dry at 20° C., of from 5 GPa to less than 8 GPa as measured according to ASTM D-2520-13, at a frequency of at least 1 GHz, at 23° C., under 50% RH.

Abstract: The use of a mixture of solid and hollow glass reinforcements with an alloy of at least one polyamide and at least one polyolefin, the mixture of solid and hollow glass reinforcements including from 5 to 50% by weight of hollow glass beads relative to the total of solid and hollow glass reinforcements for the dry preparation at 23° C. of a composition having a modulus at least equal to 8 GPa and a dielectric constant Dk less than or equal to 3.5 as measured according to ASTM D-2520-13, at a frequency of at least 1 GHz, at 23° C., under 50% RH.

Abstract: A method for uniformly irradiating a frame of a processed substrate, the processed substrate including a plurality of frames, two consecutive frames being separated by an intermediate zone, the method includes steps of: determining an initial position of the processed substrate using a detecting unit; comparing the detected initial position with a first predetermined position associated with a first frame of the processed substrate; irradiating the first frame of the processed substrate by an irradiation beam emitted by a source unit and scanned by a scanning unit based on the first predetermined position, the irradiation beam being adapted to cover uniformly the whole first frame. A system for uniformly irradiating a frame of a processed substrate is also described.

Abstract: The present invention relates to a process for irradiating a processed surface (5) of a processed substrate (1) so as to obtain a predefined temperature profile, the processed surface (5) comprising a first area (11) and a second area (13), said first area (11) having a first combination of optical properties and thermal properties, and said second area (13) having a second combination of optical properties and thermal properties, said first combination and second combination being different. A further object of the invention is a system (21) for irradiating a processed surface (5) of a processed substrate (1) so as to obtain a predefined temperature profile, the processed surface (5) comprising a first area (11) and a second area (13), said first area (11) having a first combination of optical properties and thermal properties, and said second area (13) having a second combination of optical properties and thermal properties, said first combination and second combination being different.

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; putting the product mixture in contact with a protic solvent, so as to obtain a first phase containing the Lewis acid and a second phase containing 1,4-bis(4-phenoxybenzoyl)benzene; heating at least the second phase up to a maximum temperature, followed by cooling the second phase down to a separation temperature; subjecting at least the second phase to a solid/liquid separation step at the separation temperature, so as to recover solid 1,4-bis(4-phenoxybenzoyl)benzene.

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture including a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; contacting the product mixture with a protic solvent, so as to obtain a first phase containing the Lewis acid and a second phase containing 1,4-bis(4-phenoxybenzoyl)benzene; heating at least the second phase up to a maximum temperature, followed by cooling the second phase down to a separation temperature; subjecting at least the second phase to a solid/liquid separation step at the separation temperature, so as to recover solid 1,4-bis(4-phenoxybenzoyl)benzene.

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in the presence of a Lewis acid, so as to obtain a product mixture including 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex, wherein the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex is, at least partly, in the form of a precipitate; carrying out a solid/liquid separation of the product mixture to obtain a cake comprising the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex precipitate; putting the cake in contact with a decomplexing solvent, wherein the decomplexing solvent is a protic solvent, so as to dissociate the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex into 1,4-bis(4-phenoxybenzoyl)benzene; and, recovering the 1,4-bis(4-phenoxybenzoyl)benzene. Also, a method for manufacturing a polyaryletherketone polymer starting from 1,4-bis(4-phenoxybenzoyl)benzene manufactured by the above method.

Abstract: The invention relates to a method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), comprising: providing a reactant mixture comprising terephthaloyl chloride, diphenyl ether and a Lewis acid in a solvent; reacting terephthaloyl chloride with diphenyl ether, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex; wherein the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex is dissolved in the solvent at a 1,4-bis(4-phenoxybenzoylbenzene) weight concentration in the solvent which is higher than the saturation limit of the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex during at least part of the step of reacting terephthaloyl chloride with diphenyl ether.

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), including: providing a reactant mixture including terephthaloyl chloride, diphenyl ether and a Lewis acid in a solvent; reacting terephthaloyl chloride with diphenyl ether, so as to obtain a product mixture including a 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex; wherein the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex is dissolved in the solvent at a 1,4-bis(4-phenoxybenzoylbenzene) weight concentration in the solvent which is higher than the saturation limit of the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex during at least part of the step of reacting terephthaloyl chloride with diphenyl ether.

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture including a 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex; contacting the product mixture with a protic solvent, so as to obtain a first phase containing the Lewis acid and a second phase containing 1,4-bis(4-phenoxybenzoylbenzene); heating at least the second phase up to a maximum temperature, followed by cooling the second phase down to a separation temperature; subjecting at least the second phase to a solid/liquid separation step at the separation temperature, so as to recover solid 1,4-bis(4-phenoxybenzoylbenzene).

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoylbenzene), including: providing a reactant mixture including terephthaloyl chloride, diphenyl ether and a Lewis acid in a solvent; reacting terephthaloyl chloride with diphenyl ether, so as to obtain a product mixture including a 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex; wherein the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex is dissolved in the solvent at a 1,4-bis(4-phenoxybenzoylbenzene) weight concentration in the solvent which is higher than the saturation limit of the 1,4-bis(4-phenoxybenzoylbenzene)-Lewis acid complex during at least part of the step of reacting terephthaloyl chloride with diphenyl ether.

Abstract: A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in the presence of a Lewis acid, so as to obtain a product mixture including 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex, wherein the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex is, at least partly, in the form of a precipitate; carrying out a solid/liquid separation of the product mixture to obtain a cake comprising the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex precipitate; putting the cake in contact with a decomplexing solvent, wherein the decomplexing solvent is a protic solvent, so as to dissociate the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex into 1,4-bis(4-phenoxybenzoyl)benzene; and, recovering the 1,4-bis(4-phenoxybenzoyl)benzene. Also, a method for manufacturing a polyaryletherketone polymer starting from 1,4-bis(4-phenoxybenzoyl)benzene manufactured by the above method.

Abstract: The invention refers to a process for rejuvenating a hydrotreating catalyst comprising a group VIB hydrogenation metal and/or a group VIII hydrogenation metal, which comprises the steps of: (a) regenerating the catalyst by contacting said catalyst with an oxygen containing gas at a temperature from about 300° C. to 550° C., (b) impregnating the regenerated carbon-reduced catalyst with an impregnation solution which comprises a mixture of water and a combination of MoO3 and H3PO4, (c) aging the impregnated catalyst and (d) drying the aged catalyst. The invention also refers to the rejuvenated catalyst obtained and its use for hydrotreating hydrocarbon feedstocks.

Abstract: The invention refers to a process for rejuvenating a hydrotreating catalyst comprising a group VIB hydrogenation metal and/or a group VIII hydrogenation metal, which comprises the steps of: (a) regenerating the catalyst by contacting said catalyst with an oxygen containing gas at a temperature from about 300° C. to 550° C. to obtain a regenerated carbon-reduced catalyst, (b) impregnating the regenerated carbon-reduced catalyst with a solution which consists of a mixture of water and citric acid, (c) aging the impregnated catalyst for at least 6 hours and (d) drying the aged catalyst. The invention also refers to the rejuvenated catalyst obtained and its use for hydrotreating hydrocarbon feedstocks.

Abstract: The invention refers to a process for rejuvenating a hydrotreating catalyst comprising a group VIB hydrogenation metal and/or a group VIII hydrogenation metal, which comprises the steps of: (a) regenerating the catalyst by contacting said catalyst with an oxygen containing gas at a temperature from about 300° C. to 550° C., (b) impregnating the regenerated carbon-reduced catalyst with an impregnation solution which comprises a mixture of water and a combination of MoO3 and H3PO4, (c) aging the impregnated catalyst and (d) drying the aged catalyst. The invention also refers to the rejuvenated catalyst obtained and its use for hydro-treating hydrocarbon feedstocks.