WO2015132510A1 - Composition transparente a base de polyamide chargee de verre - Google Patents
Composition transparente a base de polyamide chargee de verre Download PDFInfo
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- WO2015132510A1 WO2015132510A1 PCT/FR2015/050475 FR2015050475W WO2015132510A1 WO 2015132510 A1 WO2015132510 A1 WO 2015132510A1 FR 2015050475 W FR2015050475 W FR 2015050475W WO 2015132510 A1 WO2015132510 A1 WO 2015132510A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/36—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/40—Polyamides containing oxygen in the form of ether groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Definitions
- the invention relates to the use of novel thermoplastic polymer compositions for the manufacture of objects having excellent transparency properties, in particular high transmittance combined with low Haze.
- the invention more particularly relates to the manufacture of transparent equipment used in automotive parts, lighting or optical devices, electrical, electronic, and telecommunications, and in particular mobile telephony.
- Haze less than 15% (in Haze unit), measured according to ASTM D 1003-97.
- Haze or haze means a surface tematorium, a veiling, haze, "fog”, or misting effect on the surface of the material. This effect is also known as Anglo-Saxon “fogging”. This effect can alter the transparency, aesthetics and brightness of the surface of the object.
- Transparent materials formed from amorphous PA are used for the manufacture of transparent optical devices. They have the advantage of being light, but their rigidity must be improved by the addition of a reinforcing material, such as reinforcing fibers, especially glass fibers, mineral fillers, or rubber components.
- EP2169008 discloses an amorphous polyamide resin (PA) composition comprising a glass filler, the difference in refractive index between the glass filler and the polyamide not exceeding 0.002.
- PA amorphous polyamide resin
- the high glass transition temperature (Tg), greater than 150 ° C, of these reinforced PA transparent can make the transformation (including injection) of these materials more difficult, with sometimes problems of removal of material.
- US4404317 discloses particular molding mixtures comprising a semi-crystalline polyamide, an amorphous polyamide and glass fibers. This document is silent on the transmittance properties of these mixtures.
- the present invention also aims to provide a method of manufacturing such objects that is simple, easy to implement, fast (which has the least possible steps), and avoids the problems of withdrawal, especially after injection.
- the subject of the present invention is therefore the use of at least one semicrystalline polyamide in an amorphous polyamide resin filled with glass for the manufacture of a composition that is more transparent than said resin.
- the transparency of the glass-filled amorphous polyamide resin further comprising a semicrystalline polyamide according to the invention, such as determined by measuring the transmittance according to ISO 13468-2: 2006, is therefore greater than the transparency of the only said amorphous amorphous polyamide resin loaded with glass as determined by measuring the transmittance according to ISO 13468-2 : 2006.
- the subject of the present invention is in particular a polyamide-based composition comprising:
- Semi-crystalline polyamides within the meaning of the invention are generally understood to mean linear aliphatic polyamides whose crystallinity is manifested by the presence of spherolites of sufficiently large size for the material to have a transmittance of less than 75% at 560 nm plate 2 mm thick (according to ISO 13468-2: 2006).
- the semi-crystalline polyamide used in the present invention is chosen from: PA 4.10, PA 4.T, PA 6, PA 6.6, PA 4.6, PA 6.10, PA 6.12, PA 11, PA 12, PA 9.10, PA 9.12, PA 9.13, PA 9.14, PA 9.15, PA 9.16, PA 9.18, PA 9.36, PA 10.10, PA 10.12, PA 10.13, PA 10.14, PA 12.10, PA 12.12, PA 12.13, PA 12.14, PA 6.14, PA 6.13, PA 6.15, PA 6.16, PA 6.18, PA MXD.6, PA MXD. IO, PA 12.T, PA 10.T, PA 9.T, PA 18.T, PA 6.T / 6.6, PA 6.6 / 6.T / 6.I, PA 6 / 6.T.
- Said semi-crystalline PA represents from 5.0 to 40.0% by weight, preferably from 10.0 to 30.0% by weight, preferably from 10.0 to 20.0% by weight, on the weight total of the composition used according to the invention.
- the amorphous polyamides are chosen from aliphatic, cycloaliphatic and aromatic polyamides or a mixture thereof.
- Transparent amorphous polyamides (homopolyamides or copolyamides) (or PA) that can be used in the compositions according to the invention are described in particular in patent documents EP1595907 and WO09153534.
- transparent amorphous polyamides mention may be made of PA B.12, PA 11 / B.14 and PA 11 / B.10, 12 / B.I / B.T.
- amorphous polyamide (s) (or PA) amorphous polyamide (s) (or PA)
- transparent amorphous polyamide (s) (or PA) have the same meaning.
- the transparent amorphous polyamide comprises a blend of at least one aliphatic amorphous polyamide and at least one aromatic amorphous polyamide.
- the content by weight of aliphatic amorphous polyamide represents 10% to 80% of the total weight of the mixture of amorphous aliphatic polyamide and aromatic amorphous polyamide.
- the transparent amorphous PAs used according to the invention are non-aromatic, so as not to increase the Tg of the composition, to facilitate the homogenization of the composition, not to increase the temperature of transformation or shaping of the composition. composition, and not to risk degrading the other components of the composition.
- the amorphous PA comprises more than 50 mol% of an equimolar association of at least one cycloaliphatic diamine and at least one aliphatic dicarboxylic acid, preferably predominantly (to more than 50%) molar, linear, having from 10 to 36, preferably from 10 to 18, carbon atoms.
- composition of amorphous PA contributes in particular to obtaining a compliant transparency (transmittance at least equal to 85% o, even at least 90%>) to the requirements of the invention.
- the amorphous PA used in the invention comprises more than 70%>, preferably more than 80%>, preferably more than 90%>, preferably 100%, in moles, of a combination equimolar of at least one diamine cycloaliphatic and at least one aliphatic dicarboxylic acid, preferably linear, having from 10 to 18 carbon atoms.
- Said at least one cycloaliphatic diamine is advantageously chosen from: bis (3,5-dialkyl-4-aminocyclohexyl) methane, bis (3,5-dialkyl-4-aminocyclohexyl) ethane, bis (3,5-dialkyl) 4-aminocyclohexyl) propane, bis (3,5-dialkyl-4-aminocyclohexyl) butane, bis- (3-methyl-4-aminocyclohexyl) methane (abbreviated "BMACM” or “MACM” or “B “), P-bis (aminocyclohexyl) methane (PACM), risopropylidenedi (cyclohexylamine) (PACP), isophoronediamine (IPD), 2,6-bis (amino methyl) norbornane (BAMN), and mixtures thereof.
- BMACM bis-methyl-4-aminocyclohexyl methane
- a single cycloaliphatic diamine in particular bis
- At least one non-cycloaliphatic diamine may be used in the composition of the amorphous PA monomers in a proportion of at most 30 mol% (in moles) relative to the diamines of said composition.
- Non-cycloaliphatic diamines that may be mentioned are linear aliphatic diamines, such as 1,4-tetramethylene diamine, 1,6-hexamethylenediamine, 1,9-nonadiamine and 1,10-decamethylenediamine.
- the C10 to C18 aliphatic dicarboxylic acid is preferably selected from 1,10-decanedicarboxylic acid or sebacic acid, 1,12-dodecanedicarboxylic acid, 1,14-tetradecanedicarboxylic acid and 1,18-tetradecanedicarboxylic acid. - octadecanedicarboxylic.
- the dicarboxylic acid may optionally be at least partially branched by at least one C 1 to C 3 alkyl group (having 1 to 3 carbon atoms).
- At least one non-aliphatic dicarboxylic acid may be included in the composition of the amorphous PA monomers.
- the non-aliphatic dicarboxylic acid is present at a level of at most 15 mol% relative to the dicarboxylic acids of the amorphous PAs.
- the non-aliphatic dicarboxylic acid is chosen from aromatic diacids, in particular isophthalic acid (I), terephthalic acid (T) and mixtures thereof.
- the term "monomer” in the present description of polyamides should be understood as "repetitive unit". Indeed, the case where a repeating unit of the PA consists of the combination of a diacid with a diamine is particular. It is considered that it is the combination of a diamine and a diacid, that is to say the diamine pair. diacid (in equimolar quantity), which corresponds to the monomer. This is explained by the fact that, individually, the diacid or the diamine is only a structural unit, which is not enough on its own to polymerize.
- Said PA may optionally comprise less than 50 mol% of at least one polyamide comonomer, that is to say a monomer of different composition from said equimolar majority association defined above.
- said amorphous PA comprises less than 30 mol%, preferably less than 20%>, preferably less than 10%> of polyamide comonomer (s), said at least one comonomer may be chosen from lactams, acids and alpha-omega aminocarboxylic, diamine associations. diacid different from that defined above, and mixtures thereof.
- the lactam is, for example, selected from caprolactam, oenantholactam and lauryllactam.
- the alpha-omega-aminocarboxylic acid is, for example, selected from aminocaproic acid, 7-amino-heptanoic acid, 11-amino-undecanoic acid or 12-amino-dodecanoic acid.
- the amorphous PAs are formed essentially (at more than 80 mol%) from at least one monomer selected from B.10, B.12, B.14, B.16, B.18, their copolymers ( copolyamides) and / or blocks, and mixtures thereof.
- Said amorphous PA represents 20.0 to 80.0% by weight, preferably 30.0 to 70.0% by weight, preferably 40.0 to 70.0% by weight, relative to the total weight of the composition used according to the invention.
- Examples of types of amorphous polyamide resin include: polyamide PA 12 / MACM.I (PA12 / 3,3-dimethyl-4,4-diaminocyclohexylmethane, isophthalic acid), PA 12 / MACM.T (PA12 / 3,3-dimethyl-4,4-diaminocyclohexylmethane, terephthalic acid), PA MACM.12 (3,3-dimethyl-4,4-diaminocyclohexylmethane, dodecanedicarboxylic acid), PA PACM.12 (4 , 4-bis (aminocyclohexylmethane), dodecanedicarboxylic acid), PA 6.1 / 6 .T, and PA 6.I / 6.T / MACM.I.
- glass filler within the meaning of the invention is meant any glass filler, especially as described by Frederick T. Wallenberger, James C. Watson and Hong Li, PPG Industries Inc. (ASM Handbook, Vol 21: composites (# 06781 G), 2001 ASM International), provided that the transparency of the amorphous polyamide resin comprising said glass filler and further comprising a semi-crystalline polyamide according to the invention, as determined by the measurement of the transmittance according to ISO 13468-2: 2006, which is greater than the transparency of the only said amorphous polyamide resin comprising said glass filler as determined by measuring the transmittance according to ISO 13468-2: 2006.
- said glass filler comprises (or consists of), expressed in% by weight, 60.0 to 65.5% silicon dioxide (Si0 2 ), from 23.0 to 25.0% d. aluminum oxide (Al 2 O 3 ), 0.0 to 5.0% boron oxide (B 2 O 3 ), 0.0 to 9.0% calcium oxide (CaO) , from 0.0 to 5.0% zinc oxide (ZnO), from 0.0 to 1.0% zirconium oxide (Zr 2 O 3 ), from 0.0 to 5.0% of strontium oxide (SrO), from 0.0 to 1.0% barium oxide (BaO), 6.0 to 11.0% magnesium oxide (MgO), from 0.0 to 5 , 0% lithium oxide (Li 2 O), 0.0 to 0.1% sodium oxide (Na 2 O), 0.0 to 10.0% potassium oxide (K 2 0) and 0.0 to 0.1% iron oxide (Fe 2 0 3).
- said charge comprises (or consists of), expressed in%> by weight, 68.0 to 74.0%> of silicon dioxide (Si0 2 ), 2.0 to 5.0% d aluminum oxide (Al 2 O 3 ), 2.0 to 5.0% boron oxide (B 2 O 3 ), 2.0 to 10.0% calcium oxide (CaO), 0.0 to 5.0%> of zinc oxide (ZnO), 0 to 5%> of strontium oxide (SrO), of 0.0 to 1.0%> of barium oxide ( BaO), 1 to 5%> magnesium oxide (MgO), 0 to 5%> lithium oxide (Li 2 O), 5.0 to 12.0%> sodium oxide ( Na 2 O), and 0.0 to 10.0%> potassium oxide (K 2 0), wherein the total amount of lithium oxide (Li 2 O), sodium oxide (Na 2 0), and potassium oxide (K 2 0) is from 8.0 to 12.0%.
- the difference in refractive index between the glass filler and the composition of the invention is 0.010 or less with respect to light having a wavelength of 589 nm; 0.010 or less with respect to light having a wavelength of 486 nm, and 0.010 or less with respect to light having a wavelength of 656 nm.
- the refractive index is measured at 23 ° C., at a given wavelength on an Abbe refractometer from Atago (Model NAR 1T SOLID).
- the difference in refractive index between the glass filler and the composition of the invention is 0.006 or less with respect to light having a wavelength of 589 nm; 0.006 or less with respect to light having a wavelength of 486 nm, and 0.006 or less with respect to light having a wavelength of 656 nm.
- the difference in refractive index between the glass filler and the composition of the invention is 0.002 or less with respect to light having a wavelength of 589 nm; 0.002 or less with respect to light having a wavelength of 486 nm, and 0.002 or less with respect to light having a wavelength of 656 nm.
- the amorphous polyamide resin composition of the present invention utilizes a glass filler having, in its composition, a total content of calcium oxide (CaO) and magnesium oxide (MgO) of 6 to 20% by weight on the total weight of the glass load.
- a glass filler having, in its composition, a total content of calcium oxide (CaO) and magnesium oxide (MgO) of 6 to 20% by weight on the total weight of the glass load.
- composition is not limited to the addition of semi-crystalline polyamide in the amorphous polyamide loaded with glass.
- Bond can also be prepared by premixing the semicrystalline polyamide and the amorphous polyamide and adding the glass filler.
- the amorphous polyamide resin composition of the present invention refers only to the amorphous polyamide charged with glass prior to the addition of the semi-crystalline polyamide.
- the amorphous polyamide resin composition of the present invention uses a glass filler having, in its composition, a total content of silicon dioxide (SiO 2 ) and aluminum oxide (Al 2 O 3 ) of 83.0 to 90.5% by weight on the total weight of the glass filler
- the amorphous polyamide resin composition of the present invention uses a glass filler having a total silicon dioxide (SiO 2 ) content of 60.0 to 65.5%, expressed in terms of oxides in% by weight of the glass load.
- the amorphous polyamide resin composition of the present invention uses a glass filler having a content of Na 2 0 of from 0.0 to 0, 1% relative to the total weight of the glass filler.
- the amorphous polyamide resin composition of the present invention utilizes a glass filler having an Al 2 O 3 content of from 23.0 to 25.0% based on the total weight of the glass filler.
- the amorphous polyamide resin composition of the present invention uses a glass filler having a CaO content of 0.0 to 9.0% based on the total weight of the glass filler.
- the amorphous polyamide resin composition of the present invention uses a glass filler having an MgO content of 6.0 to 11.0% based on the total weight of the glass filler.
- the amorphous polyamide resin composition of the present invention utilizes a glass filler having a B 2 0 3 content of 0.0 to 5.0% based on the total weight of the glass filler.
- the amorphous polyamide resin composition of the present invention uses a glass filler having a total content of lithium oxide (Li 2 O), sodium oxide (Na 2 O) and potassium oxide (K 2 O). ) from 0.0 to 0.1% relative to the total weight of the glass filler.
- the amorphous polyamide resin composition of the present invention utilizes a glass filler having, in its composition, a total content of calcium oxide (CaO) and magnesium oxide (MgO) of 3.0 to 15.0% by weight on the total weight of the composition of the glass filler.
- a glass filler having, in its composition, a total content of calcium oxide (CaO) and magnesium oxide (MgO) of 3.0 to 15.0% by weight on the total weight of the composition of the glass filler.
- the amorphous polyamide resin composition of the present invention uses a glass filler having, in its composition, a total content of silicon dioxide (SiO 2 ) and aluminum oxide (Al 2 O 3 ) of 70.0 to 79.0% by weight on the weight of the composition of the glass filler.
- the amorphous polyamide composition of the present invention uses a glass filler which is, in its composition, substantially or completely free of titanium oxide (TiO 2 ).
- the clear polyamide composition of the present invention has a glass filler content of from 5.0 to 40.0% by weight, preferably from 5.0 to 30.0%, particularly from 5.0 to 20% by weight. , 0%> on the total weight of the composition used according to the invention.
- the transparent composition according to the invention comprises, with respect to the total weight of the composition:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- the transparent composition according to the invention comprises, with respect to the total weight of the composition used according to the invention:
- compositions of the invention defined above optionally comprise from 0.0 to 5.0% by weight of PEBA.
- compositions defined above comprise from 0.0 to
- compositions of the invention defined above optionally comprise from 0 to 5.0% by weight of PEBA and from 0.0 to 5.0% by weight of additives.
- compositions defined above comprise from 0.1 to
- compositions of the invention defined above comprise from 0.1 to 5.0% by weight of additives.
- compositions of the invention defined above comprise from 0.1 to 5.0% by weight of PEBA and from 0.1 to 5.0% by weight of additives.
- the glass filler used in the composition according to the invention comprises at least one element chosen from: a glass fiber, a glass powder, glass flakes, a crushed fiber, and a glass ball.
- the present invention also relates to a molded article manufactured by molding the composition according to the invention.
- the very small difference between the refractive indices of the composition of the invention and the glass filler makes it possible to obtain a molded product having a very high transparency.
- the refractive index of the composition containing the amorphous polyamide resin is preferably from 1.505 to 1.545 with respect to light having a wavelength of 589 nm; 1.512 to 1.555 with respect to light having a wavelength of 486 nm and 1.502 to 1.541 with respect to light having a wavelength of 656 nm.
- the refractive indices of the resin component containing the amorphous polyamide resin are particularly preferably: from 1.507 to 1.540, in particular from 1.508 to 1.520 with respect to a light having a wavelength of 589 nm; 1.515 to 1.527 with respect to light having a wavelength of 486 nm, and from 1.505 to 1.517 with respect to light having a wavelength of 656 nm.
- the glass filler used in the polyamide composition of the present invention comprises or consists of, expressed in terms of oxides in% by weight, on the weight of the composition: 68.0 to 74, 0% silicon dioxide (SiO 2 ), 2.0 to 5.0% aluminum oxide (Al 2 O 3 ), 2.0 to 5.0% boron oxide (B 2 O 3) ), 2.0 to 10.0% calcium oxide (CaO), 0.0 to 5.0% zinc oxide (ZnO), 0.0 to 5.0% strontium (SrO), 0.0 to 1.0% barium oxide (BaO), 1.0 to 5.0% magnesium oxide (MgO), 0.0 to 5.0% d lithium oxide (Li 2 O), 5.0 to 12.0% sodium oxide (Na 2 O), and 0.0 to 10.0% potassium oxide (K 2 O), wherein a total amount of lithium oxide (Li 2 O), sodium oxide (Na 2 O), and potassium oxide (K 2 0) is from 8.0 to 12.0%.
- the glass filler preferably contains silicon dioxide (SiO 2 ) in a concentration of 68.0 to 74.0%, and preferably 68.0 to 72.0%. If the content of silicon dioxide (SiO 2) is less than 68.0%, it is difficult to match the refractive index of the glass filler with that of the amorphous polyamide resin. On the other hand, if the content of silicon dioxide (SiO 2) exceeds 74.0%, the solubility of the glass filler in the composition is greatly reduced. In particular, in the case where the glass filler is used in the form of fiberglass, the spinning temperature is high, which leads to production difficulties.
- silicon dioxide SiO 2
- the glass filler preferably contains aluminum oxide (Al 2 O 3 ) in a concentration of 2.0 to 5.0%, and preferably 2.0 to 4.0%. If the aluminum oxide content (Al 2 O 3 ) is less than 2%, the chemical resistance to water is reduced. On the other hand, if the content of aluminum oxide (Al 2 O 3 ) is greater than 5.0%, the glass tends to be heterogeneous.
- the total content of silicon dioxide (SiO 2 ) and aluminum oxide (Al 2 O 3 ) is preferably 70.0 to 79.0%, and more preferably 71.0 to 76.0% . It is then easy to compare the refractive index of the glass load with the refractive index of the amorphous polyamide resin.
- the glass filler contains sodium oxide (Na 2 0) in a content of 5.0 to 12.0%, and preferably 8.0 to 11.0%. If the content of sodium oxide (Na 2 0) content exceeds 12.0%, the water resistance of the glass tends to decrease. On the other hand, if the content of sodium oxide content (Na 2 0) is less than 5.0%, it is difficult to compare the refractive index of the glass load with the refractive index of the resin of amorphous polyamide.
- the glass filler used in the composition comprises or is comprised of, expressed in% by weight, 60.0 to 65.5% silicon dioxide (SiO 2 ), from 23.0 to 25 , 0% of aluminum oxide (Al 2 O 3 ), 0.0 to 5.0% of boron oxide (B 2 O 3 ), 0.0 to 9.0% of oxide of calcium (CaO), from 0.0 to 5.0% zinc oxide (ZnO), from 0.0 to 1.0% zirconium oxide (Zr 2 C "3), from 0.0 to 5.0% of strontium oxide (SrO), 0.0 to 1.0% barium oxide (BaO), 6.0 to 11.0% magnesium oxide (MgO), 0.0 to 5.0% of lithium oxide (Li 2 O), 0.0 to 0.1% of sodium oxide (Na 2 O), 0.0 to 10.0% of potassium oxide (K 2 O) and from 0.0 to 0.1% iron oxide (Fe 2 O 3 ).
- the glass filler used comprises a total content of silicon dioxide (SiO 2 ) and aluminum oxide (Al 2 O 3) of 83.0 to 90.5%. weight on the weight of the composition.
- the glass filler may contain lithium oxide (Li 2 O) in a concentration of 0.0 to 5.0%, and preferably 0.0 to 2.0%. %>.
- the glass filler may contain potassium oxide (K 2 O) in a concentration of 0.0 to 10.0%, and preferably 0.0 to 5.0%.
- Oxide Sodium (Na 2 0) can be partially substituted with lithium oxide (Li 2 O) or potassium oxide (K 2 O), which improves the water resistance of the glass.
- the glass filler may contain alkaline components, lithium oxide (Li 2 O), sodium oxide (Na 2 O), and potassium oxide (K 2 O), depending on a concentration. from 8.0 to 12.0%, and preferably from 8.0 to 11.0% in total. If the total amount of the alkaline components is greater than 12.0%, the water resistance of the glass tends to decrease. On the other hand, if the total amount of the alkaline components is less than 8%, it is difficult to produce the glass filler because the glass becomes difficult to melt.
- alkaline components lithium oxide (Li 2 O), sodium oxide (Na 2 O), and potassium oxide (K 2 O)
- the glass filler contains calcium oxide (CaO) in a concentration of 0.0 to 9.0%, in particular 2.0 to 10.0%, and preferably 6.0 to at 9.0%>. If the calcium oxide (CaO) content is less than 2%, the melting ability of the glass tends to decrease but is still sufficient. On the other hand, if the calcium oxide (CaO) content exceeds 10.0%, it is difficult to compare the refractive index of the glass filler with the refractive index of the amorphous polyamide resin.
- CaO calcium oxide
- Zinc oxide (ZnO) is an optional component, and the glass filler may contain zinc oxide in a concentration of 0.0 to 5.0%, preferably 0.0 to 2.0%. %>.
- the addition of zinc oxide (ZnO) can improve the water resistance of the glass.
- zinc oxide (ZnO) content not exceed this upper limit because glass tends to be devitrified.
- Strontium oxide is an optional component, and the glass filler may contain strontium oxide in a concentration of 0.0 to 5.0%, and preferably 0.0 to 2%, 0%>.
- Barium oxide (BaO) is an optional component, and the glass filler may contain barium oxide at a concentration of 0.0 to 1.0%.
- the total content of calcium oxide (CaO), zinc oxide (ZnO), strontium oxide (SrO) and barium oxide (BaO) is preferably from 0.0 to 10.0%, in particular from 4.0 at 10.0%>, and more preferably 6.0 to 10.0%>. If the total content of these elements is less than 4.0%, the melting ability of the glass is lower but still acceptable. On the other hand, if their content exceeds 10.0%>, it is difficult to bring the refractive index of the glass load closer to the refractive index of the amorphous polyamide resin.
- the glass filler preferably contains magnesium oxide (MgO) in a concentration of 1.0 to 5.0%, and preferably 1.0 to 3.0% or a concentration of 6.0 at 11.0%.
- MgO magnesium oxide
- the addition of magnesium oxide (MgO) can improve the mechanical properties of the glass.
- a magnesium oxide (MgO) content exceeding 5.0% is not recommended because the glass meltability tends to decrease but is still acceptable.
- the glass filler may or may not contain boron oxide (B 2 O 3 ).
- the glass filler preferably contains boron oxide (B 2 O 3 ) in a concentration of 2.0 to 5.0%, and preferably 2.0 to 4.0%.
- a content of boron oxide (B 2 0 3 ) with a content of less than 2.0%> is undesirable because it becomes difficult to bring the refractive index of the glass load closer to the refractive index of the amorphous polyamide resin. It is then necessary to vary the proportions of the other constituents of the glass fiber in order to bring the refractive index of the glass load to the refractive index of the amorphous polyamide resin or to use amorphous polyamide mixtures. .
- a boron oxide (B 2 O 3 ) content exceeding 5.0%> is not preferred because of the formation of volatile compounds during melting of the glass, which can lead to corrosion problems in the production facilities or requires additional equipment for the collection of volatile compounds.
- the TiO 2 content of the glass filler is preferably less than 0.1%. Ideally, the glass filler is free of titanium oxide (TiO 2 ) to prevent coloring phenomena.
- the glass filler or composition of the present invention may contain one or more components other than the aforementioned components, such as, for example, an oxide of a metal such as Fe, Co, Ni, Sn, Zr, Mo.
- the previously described glass filler used according to the present invention has a refractive index of 1.505 to 1.545 with respect to a light having a wavelength of 589 nm, a refractive index of 1.512 to 1.555 with respect to a light having a wavelength of 486 nm, and a refractive index of 1.502 to 1.541 with respect to light having a wavelength of 656 nm, and these refractive indices are almost the same as those of amorphous polyamide resins.
- the refractive indices of the resin component containing the amorphous polyamide resin are particularly preferably: from 1.507 to 1.540, in particular from 1.508 to 1.520 with respect to a light having a wavelength of 589 nm; 1.515 to 1.527 with respect to light having a wavelength of 486 nm, and from 1.505 to 1.517 with respect to light having a wavelength of 656 nm.
- the glass filler can be used for the production of a molded (injection) polyamide resin of the invention having high transparency and excellent mechanical strength.
- the glass load contains 68.0 to 72.0% silicon dioxide (Si0 2 ), 2.0 to 4.0% aluminum oxide (A1 2 0 3 ), 2.0 4.0% boron oxide (B 2 0 3 ), 6.0 to 9.0% calcium oxide (CaO), 0.0 to 2.0% zinc oxide (ZnO) , from 0.0 to 2.0% of strontium oxide (SrO), from 0.0 to 1.0% of barium oxide (BaO), from 1.0 to 3.0% of oxide of magnesium (MgO), 0.0 to 2.0% lithium oxide (Li 2 O), 8.0 to 11.0% sodium oxide (Na 2 O), and 0.0 to 5, 0% potassium oxide (K 2 0), the glass load tends to have a refractive index of
- the glass filler contains 60.0 to 65.5% silicon dioxide (SiO 2 ), from 23.0 to 25.0% aluminum oxide (Al 2 O 3 ), from 0.0 to 5.0% of boron oxide (B 2 0 3 ), from 0.0 to 9.0% of calcium oxide (CaO), from 0.0 to 5.0% of zinc oxide (ZnO), from 0.0 to 1.0% zirconium oxide (Zr 2 O 3 ), from 0.0 to 5.0% of the strontium oxide (SrO), from 0, 0 to 1.0% barium oxide (BaO), 6.0 to
- the glass filler has a tendency to to have a refractive index of 1.508 to 1.523 with respect to light having a wavelength of 589 nm.
- Silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), and alkaline components can decrease the refractive index of the glass filler. Examples of components which can decrease the refractive index of the glass filler other than the aforementioned components include P 2 0 5 and F 2 .
- the refractive index of the glass filler is smaller than the desired refractive index, namely the refractive index of the amorphous polyamide resin
- the refractive index can be increased for example, by replacing with calcium oxide (CaO) a portion of the silicon dioxide (SiO 2 ).
- CaO calcium oxide
- SiO 2 silicon dioxide
- the refractive index of the glass filler increases by about 0.002.
- the refractive index of the glass filler is higher than the desired refractive index, namely the refractive index of the amorphous polyamide resin
- the refractive index can be lowered, for example by substituting with an alkaline compound part of the calcium oxide (CaO).
- an alkaline compound part of the calcium oxide (CaO) Specifically, for example, if 0.8% of sodium oxide (Na 2 O) is substituted for 0.5% of calcium oxide (CaO), the refractive index of the glass charge decrease decreases. about 0.002.
- the refractive index of the glass filler can be suitably adjusted, and it is possible to produce a glass filler having the same range of refractive index as the refractive index of the amorphous polyamide resin.
- the glass filler used may comprise (or even consist of): glass fiber, glass powder, glass flakes, milled fiber, or glass bead.
- glass fiber is preferred for its strength. It is similar to a conventional reinforcing fiber such as fiberglass E, and has a high efficiency in reinforcing the amorphous polyamide resin molded product.
- Another preferred fiber is a type S glass fiber, in particular S-2 marketed by AGY. Fiberglass can be produced by any conventional spinning process for continuous fiberglass.
- the glass is subjected to vitrification continuously in an oven and then introduced into a crucible, and subjected to spinning by a mounted socket at the lower part of the crucible, and the reflow process in which molten glass is transformed into a ball or rod, followed by re-melting and spinning.
- direct melting process in which the glass is subjected to vitrification continuously in an oven and then introduced into a crucible, and subjected to spinning by a mounted socket at the lower part of the crucible
- the reflow process in which molten glass is transformed into a ball or rod, followed by re-melting and spinning.
- the diameter of the glass fiber is preferably from 5 to 50 ⁇ , preferably from 10 to 45 ⁇ .
- Glass powder can be produced by any production process, such as glass melting followed by water granulation.
- the average particle size is preferably from 1 to 100 ⁇ as determined by a laser diffraction granulometer apparatus or according to the ISO 13320-1: 2009 standard.
- the glass filler may also be in the form of flakes or flakes of glass, which may be produced by any conventional production processes, such as by spraying the melt.
- the thickness of the glass flakes is preferably from 0.1 to 10 ⁇ .
- Crushed fibers can be produced by any known conventional method.
- ground fiber can be produced by spraying a strand of a glass fiber using a hammer mill or ball mill.
- the diameter of the fiber and the length to diameter ratio of the milled fiber are preferably from 5 to 50 ⁇ and from 2 to 150, respectively.
- Glass beads may be produced by any conventionally known production method, for example, by melting and spraying the glass melt.
- the particle size of the glass beads is preferably from 5 to 300 ⁇ .
- two or more charge forms selected from: glass fiber, glass powder, glass flakes, milled fiber, and glass beads may be used in combination as a glass filler.
- the glass filler is surface-treated with a coupling agent to increase the affinity and adhesion between the resin component containing the amorphous polyamide resin and the glass fiber, which avoids any reduction in the transparency of the glass. molded product caused by the formation of voids.
- silane coupling agent mention may be made of those based on silane, borane, aluminates, those of titanate type, and the like.
- silane coupling agents are preferred because they allow good adhesion between the amorphous polyamide resin and glass filler.
- silane coupling agent aminosilane coupling agents, epoxysilanes, acrylsilane, and the like can be used. Of the silane coupling agents, aminosilane coupling agents are preferred.
- the charge treatment may optionally include film-forming agents, lubricating agents, antistatic agents and the like, in addition to the coupling agent.
- film-forming agents include vinyl acetate, urethane, acrylic, polyester, polyether, phenoxy, polyamide, epoxy, and / or the like.
- lubricating agents that may be mentioned are the aliphatic ester, the aliphatic ether, the aromatic ester or surfactants containing aromatic ethers.
- an antistatic agent mention may be made of inorganic salts such as lithium chloride or potassium iodide, as well as quaternary ammonium salts such as ammonium chloride or ammonium ethosulphate.
- the filler content of glass in the polyamide composition is preferably 5.0 to 40% by weight, especially 5.0 to 30.0%, preferably 5.0 to 20.0% by weight. % by weight, based on the total weight of the composition. If the filler content of glass is less than 5.0% by weight, the molded product obtained by molding the polyamide resin composition tends to have poor mechanical properties, whereas if the filler content is higher at 40% by weight, the contact area between the resin and the glass filler is increased, which tends to reduce the moldability and transparency of the molded product obtained.
- the amount of the glass filler in the polyamide composition is in the range mentioned above, it is possible to produce a molded product combining both good mechanical properties and excellent transparency.
- composition according to the invention may furthermore comprise at least one block copolymer (s) PE and block (s) PA, hereinafter PEBA comprising one or more PE blocks and one or more PA blocks.
- PEBA block copolymer
- the "polyether block and polyamide block copolymers” abbreviated "PEBA” result from the poly-condensation of polyamide blocks with reactive ends with polyether blocks with reactive ends, such as, inter alia:
- polyamide blocks with dicarboxylic chain ends with polyoxyalkylene blocks with diamine chain ends obtained by cyanoethylation and hydrogenation of polyoxyalkylene aliphatic alpha-omega dihydroxylated blocks called polyether diols
- the polyamide blocks with dicarboxylic chain ends come, for example, from the condensation of polyamide precursors in the presence of a chain-limiting dicarboxylic acid.
- the polyamide blocks with diamine chain ends come for example from the condensation of polyamide precursors in the presence of a chain-limiting diamine.
- the molar mass in number Mn of the polyamide blocks is between 400 and 20000 g / mol and preferably between 500 and 10000 g / mol.
- Polymers with polyamide blocks and polyether blocks may also comprise randomly distributed units.
- Three types of polyamide blocks can advantageously be used.
- the polyamide blocks come from the condensation of a dicarboxylic acid, in particular those having from 4 to 20 carbon atoms, preferably those having from 6 to 18 carbon atoms, and an aliphatic or arylaliphatic diamine , in particular those having 2 to 20 carbon atoms, preferably those having 6 to 14 carbon atoms.
- dicarboxylic acids examples include 1,4-cyclohexyldicarboxylic acid, 1,2-cyclohexyldicarboxylic acid, 1,4-butanedioic acid, adipic acid, azelaic acid, suberic acid, and sebacic acid.
- diamines mention may be made of 1,5-tetramethylenediamine,
- I 6-hexamethylenediamine, 1,10-decamethylenediamine, 1,12-dodecamethylenediamine, trimethyl-1,6-hexamethylenediamine, 2-methyl-1,5-pentamethylenediamine, bis (3-methyl-4) isomers -aminocyclohexyl) methane (BMACM), and 2,2-bis (3-methyl-4-aminocyclohexyl) propane (BMACP), and p-bis (aminocyclohexyl) methane (PACM), and isophoronediamine (IPD), 2,6-bis- (aminomethyl) -norbornane (BAMN), and piperazine (Pip), and metaxylylenediamine (MXD), and paraxylylenediamine (PXD).
- BMACM 2,2-bis (3-methyl-4-aminocyclohexyl) propane
- PAMN p-bis (aminocyclohexyl) methan
- the polyamide blocks result from the condensation of one or more alpha-omega-aminocarboxylic acids and / or one or more lactams having from 6 to 12 carbon atoms in the presence of a dicarboxylic acid having 4 at 12 carbon atoms or diamine.
- lactams include caprolactam, oenantholactam and lauryllactam.
- alpha-omega-aminocarboxylic acid mention may be made of aminocaproic acid, amino-7-heptanoic acid, amino-11-undecanoic acid and amino-12-dodecanoic acid.
- the polyamide blocks of the second type are made of polyamide
- the polyamide blocks result from the condensation of at least one alpha-omega-aminocarboxylic acid (or a lactam), at least one diamine and at least one dicarboxylic acid.
- polyamide PA blocks are prepared by polycondensation:
- comonomer (s) ⁇ Z ⁇ chosen from lactams and alpha-omega aminocarboxylic acids having Z carbon atoms and equimolar mixtures at least one diamine having XI carbon atoms and at least one dicarboxylic acid having Y1 carbon atoms, (XI, Y1) being different from (X, Y),
- said one or more monomers ⁇ Z ⁇ being introduced in a proportion by weight of up to 50%, preferably up to 20%, even more advantageously up to 10% by weight relative to all the precursor monomers of polyamide;
- the dicarboxylic acid having Y carbon atoms which is introduced in excess with respect to the stoichiometry of the diamine or diamines, is used as chain limiter.
- the polyamide blocks result from the condensation of at least two alpha-omega-aminocarboxylic acids or at least two lactams having 6 to 12 carbon atoms or a lactam and an acid.
- aminocarboxylic having not the same number of carbon atoms in the possible presence of a chain limiter.
- aliphatic alpha-omega-amino carboxylic acid mention may be made of aminocaproic, amino-7-heptanoic, amino-11-undecanoic and amino-12-dodecanoic acids.
- lactam include caprolactam, oenantho lactam and lauryllactam.
- aliphatic diamines there may be mentioned hexamethylenediamine, dodecamethylenediamine and trimethylhexamethylenediamine.
- cycloaliphatic diacids mention may be made of 1,4-cyclohexyldicarboxylic acid.
- aliphatic diacids there may be mentioned butanedioic, adipic, azelaic, suberic, sebacic, dodecanedicarboxylic acids, dimerized fatty acids (these dimerized fatty acids preferably have a dimer content of at least 98%; preferably they are hydrogenated, they are marketed under the trademark "PRIPOL” by the company "UNICHEMA", or under the brand name EMPOL by the company HENKEL) and the polyoxyalkylenes - ⁇ , ⁇ diacids.
- aromatic diacids mention may be made of terephthalic (T) and isophthalic (I) acids.
- cycloaliphatic diamines By way of example of cycloaliphatic diamines, mention may be made of the isomers of bis (3-methyl-4-aminocyclohexyl) methane (BMACM) and 2-2-bis (3-methyl-4-aminocyclohexyl) propane ( BMACP), and p-bis (aminocyclohexyl) methane (PACM).
- BMACM bis (3-methyl-4-aminocyclohexyl) methane
- BMACP 2-2-bis (3-methyl-4-aminocyclohexyl) propane
- PAMN p-bis (aminocyclohexyl) methane
- arylaliphatic diamines examples are metaxylylenediamine (MXD) and paraxylylenediamine (PXD).
- polyamide blocks of the third type the following can be cited:
- 6.6 denotes hexamethylenediamine condensed with adipic acid.
- 6.10 denotes hexamethylenediamine condensed with sebacic acid.
- 11 denotes units resulting from the condensation of aminoundecanoic acid.
- 12 denotes patterns resulting from the condensation of lauryllactam.
- Said PE blocks represent 10 to 80% by weight, preferably 20 to 60% by weight, preferably 20 to 40% by weight, relative to the total weight of the copolymer.
- the number-average molecular mass of the PE blocks is between 200 and 1000 g / mol (excluding bounds), preferably in the range of 400 to 800 g / mol (inclusive), preferably 500 to 700 g / mol.
- the PE blocks are for example derived from at least one polyalkylene ether polyol, in particular a polyalkylene ether diol, preferably chosen from polyethylene glycol (PEG), polypropylene glycol (PPG) and polytrimethylene glycol (PO 3 G). polytetramethylene glycol (PTMG) and mixtures or copolymers thereof.
- the PE blocks may comprise polyoxyalkylene sequences with NH 2 chain ends, such sequences being obtainable by cyanoacetylation of aliphatic polyoxyalkylene alpha-omega dihydroxylated sequences known as polyetherdiols. More particularly, it is possible to use Jeffamines (for example Jeffamine® D400, D2000, ED 2003, XTJ 542, commercial products from Huntsman).
- Said at least one PE block preferably comprises at least one polyether selected from polyalkylene ether polyols, such as PEG, PPG, PO 3 G, PTMG, polyethers containing polyoxyalkylene sequences with NH2 chain ends, their random and / or block copolymers (copolyethers), and mixtures thereof.
- polyalkylene ether polyols such as PEG, PPG, PO 3 G, PTMG, polyethers containing polyoxyalkylene sequences with NH2 chain ends, their random and / or block copolymers (copolyethers), and mixtures thereof.
- the subject of the present invention is in particular a composition containing: from 5.0 to 40.0% by weight of semi-crystalline polyamide as defined above,
- the chemical composition of said amorphous polyamide is preferably chosen from the compositions already described for the polyamide blocks of the PEBAs above, which ensures compatibility of the PA with the PEBA.
- composition according to the invention makes it possible to improve the processability of the composition: improved fluidity (or flow capacity) and ductility while retaining its transparency properties.
- improved fluidity or flow capacity
- ductility while retaining its transparency properties.
- the injection of the composition according to the invention is easy, and causes very little removal of material after injection, which allows to obtain parts of high dimensional accuracy.
- Said semi-crystalline PA, the amorphous PA, and the optional PEBA used in the composition of the invention preferably have substantially the same refractive index measured according to the ISO 489: 1999 standard. It is also possible to play on the nature of the raw materials used to synthesize PEBA and PA.
- an aromatic compound for example an aromatic diacid
- the refractive index decreases if, for example, the PTMG content is increased, relative to the pure PA of the same composition as the PA block of PEBA.
- BMACM.Y series of PAs where Y is an aliphatic diacid, the longer Y is, the more refraction fall.
- the more the number of CH2 increases in the pattern the lower the refractive index.
- this additive is present from 0.01 to 5.0%, by weight relative to the total weight of the composition.
- the additive is chosen in particular from coloring agents, in particular pigments, dyes, effect pigments, such as diffractive pigments, interferential pigments, such as pearlescent agents, reflecting pigments and their mixtures; anti-UV agents, anti-aging agents, antioxidants, fluidizing agents, anti-abrasion agents, release agents, stabilizers, plasticizers, impact modifiers, surfactants, brighteners, fillers, fibers, waxes and mixtures thereof, and / or any other additive well known in the field of polymers.
- non-glass fillers there may be mentioned silica, carbon black, carbon nanotubes, expanded graphite or titanium oxide.
- the use according to the invention makes it possible to obtain a more transparent object which is easier to use than an object of the same shape made of amorphous polyamide loaded with glass, as shown in the tables of the examples below.
- the composition of the invention is manufactured by compounding or by dry blending ("dry blend") of its various components. Dry blending is preferred because it comprises fewer steps and generally entails less risk of pollution (blackheads, gels) of the composition than by compounding.
- Said composition can be used according to the invention to manufacture granules or powders, which can be in turn used in conventional polymer shaping processes for the manufacture of filaments, tubes, films, plates and / or or transparent molded objects.
- the present invention particularly relates to a method of manufacturing a transparent object, said method comprising:
- a semi-crystalline polymer supply step according to that defined above; a step of mixing said copolymer with at least one transparent amorphous PA and at least one glass filler and / or at least one PEBA and / or at least one additive, so as to manufacture a composition as defined above;
- the granules are preferred.
- Medium diameter powders are more rarely used as determined by a laser diffraction particle size analyzer in the range of 400 to 600 ⁇ .
- the compositions according to the invention are preferably in the form of powder whose particles have a diameter median volume less than 400 ⁇ , preferably less than 200 ⁇ .
- Powder manufacturing methods include cryogenic grinding and microgranulation.
- Another possible embodiment of the method of the present invention may further comprise a preliminary step of compounding PA with dyes, and / or any other additive, prior to said step of manufacturing granules or powder.
- the invention also relates to the use of a composition as defined above for the manufacture of a transparent equipment, such as glasses, frames and / or glasses, a ballistic glass, a transparent plate, a helmet, visor, shield, scuba; sports equipment; a watchglass ; space equipment, including satellite, space shuttle; aeronautical or automotive equipment, such as a windshield, a window, a porthole, a cockpit, an airplane canopy, a window, a window, in particular a car or a construction window, a window of a projector, Lighthouse ; a display window, in particular advertising, electronic, computer; a screen element; a panel of thermal, solar, photovoltaic panel; an article in the building, furnishing, appliance and decoration industry; play, toy; fashion, such as shoe heels, jewelry; furniture, such as a table, seat, armchair; an article or presentation element; packaging, case, case; container, flask, perfume article, cosmetic or pharmaceutical industry; a bag ; a protection element during transport; a protective shell
- the present invention also relates to any transparent object of composition in accordance with that defined above.
- PAAMI PA 11 / B.10 comprising less than 80 mol% of a monomer B.10 (in which "10" represents sebacic acid with 10 carbon atoms) and more than 20 mol% of a comonomer formed by 11-amino-undecanoic acid, the molar proportion of B.10 being> 0% and the molar proportion of PA 11 being ⁇ 100%.
- PAam2 PA 11 /B.10 of low viscosity in solution (less than 1.10) comprising more than 80%) molar of a monomer B.10 (in which "10" represents sebacic acid with 10 carbon atoms ) and less than 20 mol% of a comonomer formed by amino-11-undecanoic acid, the molar proportion of PA 11 being> 0% and the molar proportion of B.10 being ⁇ 100%.
- PAam3 PA 11 / B.
- PAam4 PA 12 / BI / BT comprising more than 60 mol% of BI comonomers (in which "I” represents isophthalic acid) and BT (in which "T” represents terephthalic acid) and less than 40 mol% of a comonomer formed by the lactam 12, the molar proportion of PA 12 comonomers being> 0% and the molar proportion of BI and BT being ⁇ 100%.
- polyamides are prepared according to the method described in the patent document WO2009153534 of page 20 line 12 to page 21 line 9.
- Glass fibers used those corresponding to the patent EP2169008 and produced by Asahi Fiber Glass Company, or the S-2 ® glass fibers marketed by AGY.
- PAsc PA 11 with a viscosity in solution of less than 1.30 (inherent viscosity measured according to the ARKEMA method: 0.5 g / dl in metacresol at 25 ° C.)
- PAsc2 PA 11 with a viscosity in solution greater than 1.30.
- Transparency properties transmittance and Haze are measured on a 2 mm thick plate. The transparency properties are tested on standard test pieces according to the standards used and shown in Table 1,
- MVR flow or flow properties
- Tables 1 to 3 show that only Examples 1 to 10 (Exl to Ex10) according to the invention combine high transparency (transmittance greater than 75% and Haze less than 15%, at 560 nm on a plate 2 mm thick, measured using a Konica-Minolta 3610d spectrophotometer, according to ISO 13468-2: 2006 for transmittance and according to ASTM D 1003-97 (A) for Haze) and better fluidity (MVR greater than 10), unlike comparisons 1 to 4 (Cpl-Cp4).
- MB corresponds to Blue Masterbatch (Renol Blue AG51425029-ZA Clariant Taiwan).
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Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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KR1020167027487A KR20160129889A (ko) | 2014-03-04 | 2015-02-27 | 유리-충전된 폴리아미드 기재의 투명한 조성물 |
KR1020187016588A KR102320618B1 (ko) | 2014-03-04 | 2015-02-27 | 유리-충전된 폴리아미드 기재의 투명한 조성물 |
US15/123,420 US10246587B2 (en) | 2014-03-04 | 2015-02-27 | Transparent polyamide-based composition comprising glass as filler |
CN201910763029.8A CN110483983B (zh) | 2014-03-04 | 2015-02-27 | 基于玻璃填充的聚酰胺的透明组合物 |
JP2016555506A JP6515114B2 (ja) | 2014-03-04 | 2015-02-27 | 充填材としてガラスを含む透明なポリアミド系組成物 |
CN201580023198.8A CN106255725B (zh) | 2014-03-04 | 2015-02-27 | 基于玻璃填充的聚酰胺的透明组合物 |
EP15711254.1A EP3114171A1 (fr) | 2014-03-04 | 2015-02-27 | Composition transparente a base de polyamide chargee de verre |
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FR1451755 | 2014-03-04 | ||
FR1451755A FR3018280B1 (fr) | 2014-03-04 | 2014-03-04 | Composition transparente a base de polyamide chargee de verre |
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WO2015132510A1 true WO2015132510A1 (fr) | 2015-09-11 |
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US (1) | US10246587B2 (fr) |
EP (1) | EP3114171A1 (fr) |
JP (1) | JP6515114B2 (fr) |
KR (2) | KR102320618B1 (fr) |
CN (2) | CN110483983B (fr) |
FR (1) | FR3018280B1 (fr) |
TW (1) | TWI663212B (fr) |
WO (1) | WO2015132510A1 (fr) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106118003A (zh) * | 2016-07-29 | 2016-11-16 | 佛山市高明区诚睿基科技有限公司 | 一种改性增强聚酯玻璃钢材料及其制备方法 |
CN106189151A (zh) * | 2016-07-29 | 2016-12-07 | 佛山市高明区诚睿基科技有限公司 | 一种复合玻璃纤维增强聚酯玻璃钢材料及其制备方法 |
CN106243658A (zh) * | 2016-07-29 | 2016-12-21 | 佛山市高明区诚睿基科技有限公司 | 一种持久抗菌的高性能聚酯玻璃钢材料及其制备方法 |
FR3043681A1 (fr) * | 2015-11-17 | 2017-05-19 | Arkema France | Composition a base de polyamide amorphe presentant une stabilite dimensionnelle amelioree |
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CN110483983B (zh) | 2022-06-10 |
CN110483983A (zh) | 2019-11-22 |
EP3114171A1 (fr) | 2017-01-11 |
KR102320618B1 (ko) | 2021-11-01 |
JP2017510677A (ja) | 2017-04-13 |
CN106255725A (zh) | 2016-12-21 |
CN106255725B (zh) | 2019-09-13 |
FR3018280A1 (fr) | 2015-09-11 |
FR3018280B1 (fr) | 2017-05-26 |
KR20180069101A (ko) | 2018-06-22 |
TW201602236A (zh) | 2016-01-16 |
KR20160129889A (ko) | 2016-11-09 |
US20160369098A1 (en) | 2016-12-22 |
JP6515114B2 (ja) | 2019-05-15 |
TWI663212B (zh) | 2019-06-21 |
US10246587B2 (en) | 2019-04-02 |
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