EP3665220A1 - Flame-retardant polyamide compositions with a high glow wire ignition temperature and use thereof - Google Patents
Flame-retardant polyamide compositions with a high glow wire ignition temperature and use thereofInfo
- Publication number
- EP3665220A1 EP3665220A1 EP18752741.1A EP18752741A EP3665220A1 EP 3665220 A1 EP3665220 A1 EP 3665220A1 EP 18752741 A EP18752741 A EP 18752741A EP 3665220 A1 EP3665220 A1 EP 3665220A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- flame
- polyamide compositions
- compositions according
- polyamide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0066—Flame-proofing or flame-retarding additives
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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
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- 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
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/10—Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
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- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34922—Melamine; Derivatives thereof
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- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34928—Salts
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/5205—Salts of P-acids with N-bases
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
- C08K5/5333—Esters of phosphonic acids
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- 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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/06—Organic materials
- C09K21/12—Organic materials containing phosphorus
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- 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
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/06—Polyamides derived from polyamines and polycarboxylic acids
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- 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
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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
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- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- 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
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- 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
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- 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
Definitions
- the present invention relates to flame-retardant polyamide compositions and moldings produced therefrom, which are characterized by a high
- Flammable plastics generally have to be equipped with flame retardants in order to achieve the high flame retardance requirements demanded by plastics processors and in part by the legislation. Preference - also for ecological reasons - are non-halogenated
- phosphinates the salts of phosphinic acids (phosphinates) have proven to be particularly effective for thermoplastic polymers (DE 2 252 258 A and DE 2 447 727 A).
- dialkylphosphinates containing a small amount of selected telomers are suitable as flame retardants for polymers, the polymer only undergoing very little degradation upon incorporation of the flame retardant into the polymer matrix.
- Flame retardants must often be added in high dosages in order to ensure a sufficient flame retardancy of the plastic according to international standards. Due to their chemical reactivity, which for the Flame retardancy at high temperatures is required
- Flame retardants especially at higher dosages, affect the processing stability of plastics. It can lead to increased polymer degradation, crosslinking reactions, outgassing or discoloration.
- Polyamide compositions that achieve all the required properties at the same time, here good electrical properties and effective flame retardancy.
- Glow wire ignition temperatures GWIT, GWFI and CTI as well as an effective flame retardance (UL-94) characterized by the shortest possible afterburning times (time).
- the invention relates to flame retardant polyamide compositions with a Glühdrahtentzündungstemperatur) of at least 775 ° C containing polyamide having a melting point of less than or equal to 290 ° C, preferably less than or equal to 280 ° C, most preferably less than or equal
- Phosphinic acid salt of the formula (I) as component C Phosphinic acid salt of the formula (I) as component C.
- Ri and R2 are ethyl
- M is Al, Fe, TiOp or Zn
- n 2 to 3, preferably 2 or 3
- R 3 is ethyl
- Met is Al, Fe, TiOq or Zn
- n 2 to 3, preferably 2 or 3
- the proportion of component A is usually 25 to 95 wt .-%, preferably 25 to 75 wt .-%. In the polyamide composition according to the invention, the proportion of
- Component B usually 1 to 45 wt .-%, preferably 20 to 40 wt .-%.
- the proportion of component C is usually 1 to 35% by weight, preferably 5 to 20% by weight.
- the proportion of component D is usually 0.01 to 3 wt .-%, preferably 0.05 to
- the proportion of component E is usually 0.001 to 1 wt .-%, preferably 0.01 to
- the proportion of component F is usually 1 to 25 wt .-%, preferably 2 to 10 wt .-%.
- the percentages for the proportions of components A to F are based on the total amount of the polyamide composition.
- the proportion of component B is from 1 to 45% by weight
- the proportion of component E is 0.001 to 1% by weight
- the proportion of component F is 1 to 25% by weight
- the proportion of component A is from 25 to 75% by weight
- the proportion of component B is from 20 to 40% by weight
- Preferred salts of component C are those in which M m + Zn 2+ , Fe 3 or in particular Al 3+ .
- Preferred salts of component D are zinc, iron or in particular aluminum salts.
- Preferably used salts of component E are those in which Met n + Zn 2+ , Fe 3+ or in particular Al 3+ .
- the above-described flame-retardant polyamide compositions contain, as further component G, an inorganic phosphonate.
- component G inorganic phosphonates or salts of phosphorous acid
- the inorganic phosphonate (component G) preferably corresponds to the general formula (IV) or (V)
- Kat is a p-valent cation, in particular a cation of an alkali metal, alkaline earth metal, an ammonium cation and / or a cation of Fe, Zn or in particular of Al including the cations Al ( OH) or Al (OH) 2, and p is 1, 2, 3 or 4.
- the inorganic phosphonate (component G) is preferably aluminum phosphite [Al (H2PO3) 3], secondary aluminum phosphite [Al 2 (HPO 3) 3], basic aluminum phosphite [Al (OH) (H 2 PO 3) 2 * 2aq],
- the inorganic phosphonate (component G) is preferably also aluminum phosphites of the formulas (VI), (VII) and / or (VIII)
- Aluminum phosphite tetrahydrate [Al 2 (HPO 3) 3 * 4aq] to give aluminum phosphonate to Al7 (HPO 3) 9 (OH) 6 (1,6-hexanediamine) i, 5 * 12H 2 O, by ⁇ 2 ( ⁇ 3 ) 3 * ⁇ 2 ⁇ 3 * ⁇ 2 ⁇ with x 2.27 - 1 and / or AUHePieOis.
- Preferred inorganic phosphonates (component G) are water-insoluble or sparingly soluble salts. Particularly preferred inorganic phosphonates are aluminum, calcium and zinc salts.
- component G is a
- Reaction product of phosphorous acid and an aluminum compound Reaction product of phosphorous acid and an aluminum compound.
- Particularly preferred components G are aluminum phosphites with the
- Preferred aluminum sources are aluminum isopropoxide, aluminum nitrate, aluminum chloride, aluminum hydroxide (eg pseudoboehmite).
- Preferred sources of phosphorus are phosphorous acid, (acidic)
- Preferred alkali metal phosphites are disodium phosphite, disodium phosphite hydrate, trisodium phosphite, potassium hydrogen phosphite
- Preferred Dinatriumphosphithydrat is Brüggolen ® H10 of the company. Brüggemann.
- Preferred templates are 1, 6-hexanediamine, guanidine carbonate or ammonia.
- Preferred alkaline earth metal phosphite is calcium phosphite.
- the preferred ratio of aluminum to phosphorus to solvent is 1: 1: 3.7 to 1: 2.2: 100 mol.
- the ratio of aluminum to template is 1: 0 to 1: 17 mol.
- the preferred pH of the reaction solution is 3 to 9.
- Preferred solvent is water.
- the same salt of phosphinic acid as the phosphorous acid is used in the application, so z.
- phosphinic acid aluminum diethylphosphinate together with aluminum phosphite or Zinkdiethylphosphinat together with zinc phosphite.
- the above-described flame retardant polyamide compositions contain a component G as a component
- Me is Fe, TiOr, Zn or in particular Al,
- o is 2 to 3, preferably 2 or 3
- Preferred compounds of formula (III) are those in which Me 0+ Zn Fe 3+ or in particular Al 3+ .
- Preferred compounds of formula (III) are those in which Me 0+ Zn Fe 3+ or in particular Al 3+ .
- Component G is preferably in an amount of 0.005 to 10 wt .-%, in particular in an amount of 0.02 to 5 wt .-%, based on the
- the flame retardant polyamide compositions according to the invention have a glow wire ignition temperature (GWIT) according to IEC 60695-2-13 of at least 775 ° C., preferably of at least 800 ° C. Preference is given to flame-retardant according to the invention
- Polyamide compositions achieve a rating of V0 according to UL-94, in particular measured on moldings of 3.2 mm to 0.4 mm thickness.
- Polyamide compositions have a Glow Wire Flammability Index according to IEC-60695-2-12 of at least 960 ° C, in particular measured
- the polyamide compositions of the invention contain as component A one or more polyamides having a melting point of less than or equal to 290 ° C.
- the melting point is determined by means of differential scanning caloimetry (DSC) at a heating rate of 10 K / second.
- the polyamides of component A are generally homo- or copolyamides derived from (cyclo) aliphatic dicarboxylic acids or their polyamide-forming derivatives, such as their salts, and from (cyclo) aliphatic diamines or from (cyclo) aliphatic aminocarboxylic acids or their
- polyamides used as component A according to the invention are thermoplastic polyamides. Under thermoplastic polyamides are based on Hans
- polyamides according to the invention used as component A can be prepared by various methods and synthesized from very different building blocks and in a specific application alone or in combination with processing aids, stabilizers or polymers
- Alloy partners preferably elastomers, to materials equipped with specially selected property combinations. are also suitable
- Monomerbausteine various chain regulators for setting a desired molecular weight or monomers with reactive groups for later intended post-treatments can be used.
- polyamides to be used as component A are partially crystalline aliphatic polyamides which can be prepared starting from aliphatic diamines and aliphatic dicarboxylic acids and / or cycloaliphatic lactams with at least 5 ring members or corresponding amino acids.
- Suitable starting materials are aliphatic dicarboxylic acids, preferably adipic acid,
- 2,2,4- and 2,4,4-trimethyladipic acid azelaic acid and / or sebacic acid
- aliphatic diamines preferably tetramethylenediamine, hexamethylenediamine, 1, 9-nonanediamine, 2,2,4- and 2,4,4-trimethylhexamethylenediamine, the isomeric diaminodicyclohexylmethane, diaminodicyclohexylpropane,
- Copolyamides of several of the monomers mentioned are included. Particularly preferred are caprolactams, most preferably ⁇ -caprolactam is used.
- the aliphatic homo- or copolyamides used according to the invention are preferably polyamide 12, polyamide 4, polyamide 4.6, polyamide 6, polyamide 6.6, polyamide 6.9, polyamide 6.10, polyamide 6.12, polyamide 6.66, polyamide 7.7, polyamide 8.8, polyamide 9.9, Polyamide 10.9, polyamide 10.10, polyamide 1 1 or polyamide 12.
- polyamide 12 polyamide 4
- polyamide 4.6 polyamide 6
- polyamide 6.6 polyamide 6.9
- polyamide 6.10 polyamide 6.12
- polyamide 6.66 polyamide 7.7, polyamide 8.8, polyamide 9.9
- PA6 PA6.6
- other aliphatic homo- or copolyamide-based compounds in which a
- Polyamide group in the polymer chain 3 to 1 1 come methylene groups.
- Flame-retardant polyamide compositions in which one or more polyamides is selected as component A from the group consisting of PA 6, PA 6.6, PA 4.6, PA 12, PA 6.10 are preferably used.
- Particular preference is given to flame-retardant polyamide compositions in which polyamide 6.6 or polymer blends of polyamide 6.6 and polyamide 6 are used as component A.
- fillers and / or preferably reinforcing materials are used, preferably glass fibers. It is also possible to use mixtures of two or more different fillers and / or reinforcing materials.
- Preferred fillers are mineral particulate fillers based on talc, mica, silicate, quartz, titanium dioxide, wollastonite, kaolin, amorphous silicas, nanoscale minerals, particularly preferably montmorillonites or nano-boehmites, magnesium carbonate, chalk, feldspar, glass beads and / or barium sulfate. Particular preference is given to mineral particulate fillers based on talc, wollastonite and / or kaolin.
- needle-shaped mineral fillers are also particularly preferably used. Under needle-shaped mineral fillers is understood according to the invention a mineral filler with pronounced needle-like character. Preferred are needle-shaped wollastonites.
- the mineral has a length to diameter ratio of 2: 1 to 35: 1, more preferably from 3: 1 to 19: 1, particularly preferably from 4: 1 to 12: 1.
- the average particle size of the acicular mineral fillers used according to the invention as component B is preferably less than 20 ⁇ m, more preferably less than 15 ⁇ m, particularly preferably less than 10 ⁇ m, determined using a CILAS granulometer.
- the components B preferably used according to the invention are reinforcing materials. This may, for example, to
- Reinforcement based on carbon fibers and / or glass fibers act.
- the filler and / or reinforcing material may in a preferred
- Be surface-modified embodiment preferably with a
- Adhesive or a primer system particularly preferably on
- Silane In particular when glass fibers are used, in addition to silanes, polymer dispersions, film formers, branching agents and / or
- Fiber processing aids are used.
- the glass fibers preferably used according to the invention as component B may be short glass fibers and / or long glass fibers. As short or long glass fibers, cut fibers can be used. Short glass fibers can also be used in the form of ground glass fibers.
- glass fibers can also be used in the form of continuous fibers, for example in the form of rovings, monofilaments,
- Filament yarns or twines or glass fibers can be used in the form of textile fabrics, for example as glass fabrics, as
- Glass braid or as a glass mat Glass braid or as a glass mat.
- Polyamide matrix range from 0.05 to 10 mm, preferably from 0.1 to 5 mm. After incorporation into the polyamide matrix, the length of the glass fibers has decreased. Typical fiber lengths for short glass fibers after the
- Incorporation into the polyamide matrix ranges from 0.01 to 2 mm, preferably from 0.02 to 1 mm.
- the diameters of the individual fibers can vary within wide ranges. Typical diameters of the individual fibers range from 5 to 20 ⁇ m.
- the glass fibers can have any cross-sectional shapes, for example round, elliptical, n-cornered or irregular cross-sections. Glass fibers with mono- or multilobal cross-sections can be used. Glass fibers can be used as continuous fibers or as cut or ground glass fibers.
- the glass fibers themselves can be selected, for example, from the group of E-glass fibers, A-glass fibers, C-glass fibers, D-glass fibers, M-glass fibers, S-glass fibers,
- the glass fibers are preferably provided with a size which preferably contains polyurethane as film former and aminosilane as adhesion promoter.
- E glass fibers have the following chemical composition: S1O2 50-56%; AI2O3 12-16%; CaO 16-25%; MgO ⁇ 6%; B2O3 6-13%; F ⁇ 0.7%; Na 2 O 0.3-2%; K2O 0.2-0.5%; Fe 2 Os 0.3%.
- R glass fibers have the following chemical composition: S1O2 50-56%; AI2O3 12-16%; CaO 16-25%; MgO ⁇ 6%; B2O3 6-13%; F ⁇ 0.7%; Na 2 O 0.3-2%; K2O 0.2-0.5%; Fe 2 Os 0.3%.
- R glass fibers have the following chemical
- ECR glass fibers have the following chemical composition: S1O2 57.5-58.5%; AI2O3 17.5-19.0%; CaO 11, 5-13.0%; MgO 9.5-1 1, 5.
- salts of diethylphosphinic acid with proportions of the phosphinic and phosphonic acid salts used according to the invention as components D and E are known flame retardants.
- the preparation of this combination of substances is z. B. in US 7,420,007 B2 described.
- Component C may contain small amounts of salts of component D and salts of component E, for example up to 10 wt .-% of
- Component D preferably 0.01 to 6% by weight, and in particular 0.2 to 2.5% by weight thereof, and up to 10% by weight of component E, preferably 0.01 to 6% by weight, and in particular from 0.2 to 2.5% by weight thereof, based on the amount of components C, D and E.
- Ethylphosphonic acid are as additives to diethylphosphinates in
- Flame retardants for polymeric molding compositions also known, for example from WO 2016/065971 A1.
- DE 102005016195 A1 discloses a stabilized flame retardant containing 99 to 1% by weight.
- Phosphinic acid and / or a phosphinic acid salt can be combined.
- Preferred flame retardant polyamide compositions according to the invention contain, as component F, a melamine polyphosphate whose average degree of condensation is from 20 to 200, in particular from 40 to 150.
- the average is
- Polyamide compositions contain as component F a Melaminpolyphosphat having a decomposition temperature greater than or equal to 320 ° C, in particular greater than or equal to 360 ° C and most preferably greater than or equal to 400 ° C.
- component F preference is given to using melamine polyphosphates which are known from WO 2006/027340 A1 (corresponding to EP 1 789 475 B1) and WO 2000/002869 A1 (corresponding to EP 1 095 030 B1).
- melamine polyphosphates whose mean condensation ridge (number average) is> 20 whose decomposition temperature is greater than 320 ° C., the molar ratio of 1,3,5-triazine compound to phosphorus being less than 1, 1, in particular 0.8 to 1, Is 0 and the pH of a 10% slurry in water at 25 ° C is 5 or higher, preferably 5.1 to 6.9.
- components C, D, E and F are in particulate form, the average particle size (dso) being 1 to 100 ⁇ m.
- the flame retardant polyamide composition of the present invention may optionally contain as component G an inorganic phosphonate, preferably an aluminum salt of phosphonic acid. These compounds are known as additives to diethyl phosphates in flame retardants for polymeric molding compositions.
- the polyamide compositions according to the invention may contain as component H further additives.
- Preferred components H for the purposes of the present invention are antioxidants, UV stabilizers, gamma ray stabilizers, hydrolysis stabilizers, co-stabilizers for antioxidants, antistatic agents, emulsifiers, nucleating agents, plasticizers, processing stabilizers. additives, impact modifiers, dyes, pigments and / or other flame retardants other than components C, D, E, F and G.
- phosphates such as melamine poly (metal phosphates).
- metal phosphates such as melamine poly (metal phosphates).
- Preferred metals for this purpose are the elements of FIG. 2.
- Main group the 3rd main group, the 2nd subgroup, the 4th subgroup and the subgroup Villa of the Periodic Table and cerium and / or lanthanum.
- Melamine poly (metal phosphates) are preferably melamine poly (zinc phosphates), melamine poly (magnesium phosphates) and / or melamine poly (calcium phosphates).
- melamine poly metal phosphates
- melamine-intercalated aluminum, zinc or magnesium salts of condensed phosphates very particular preference is given to bis-melamine-zinc-diphosphate and / or bis-melamine-alumotriphosphate. Preference is also given to salts of the elements of the 2nd main group, the
- Aluminum phosphates, zinc phosphate, titanium phosphate and / or iron phosphate are also preferred.
- Calcium dihydrogen pyrophosphate, magnesium pyrophosphate zinc pyrophosphate and / or aluminum pyrophosphate are examples of magnesium pyrophosphate and / or aluminum pyrophosphate.
- the further additives are known per se as additives to polyamide compositions and can be used alone or mixed or in the form of masterbatches.
- the abovementioned components A, B, C, D, E, F and optionally G and / or H can be processed in a wide variety of combinations with the flameproofed polyamide composition according to the invention. So it is possible, already at the beginning or at the end of the polycondensation or in one following compounding process to mix the components in the polyamide melt. Furthermore, there are processing processes in which individual components are added later. This is especially practiced when using pigment or additive masterbatches. In addition, there is the possibility, in particular powdered components on by the
- Drying process possibly warm up warm polymer granules.
- two or more of the components of the polyamide compositions of the present invention may be combined by mixing prior to incorporation into the polyamide matrix.
- conventional mixing units can be used, in which the components in a suitable mixer, for. B. 0.01 to 10 hours at 0 to 300 ° C mixed.
- Polyamide compositions can also be prepared granules, which can then be introduced into the polyamide matrix.
- Polyamide composition with granulation and / or binder in a suitable mixer or a granulating are processed into granules.
- the initially formed crude product can be dried in a suitable dryer or tempered for further grain buildup.
- the polyamide composition of the present invention or two or more components thereof may be prepared by roll compaction in one embodiment.
- the polyamide composition according to the invention or two or more components thereof may in one embodiment be prepared by mixing, extruding, chopping (or breaking) the ingredients.
- polyamide composition of the present invention or two or more components thereof may be prepared by spray granulation in one embodiment.
- the flame-retardant polymer molding composition according to the invention is preferably in granular form, for. B. as an extrudate or as a compound before.
- the granules preferably have a cylindrical shape with a circular, elliptical or irregular base, spherical shape, pillow shape, cube shape, cuboid shape, prism shape.
- Typical length to diameter ratio of the granules are 1 to 50 to 50 to 1, preferably 1 to 5 to 5 to 1.
- the granules preferably have a diameter of 0.5 to 15 mm, more preferably of 2 to 3 mm and preferably a length of 0.5 to 15 mm, particularly preferably 2 to 5 mm.
- the invention also relates to moldings produced from the above-described flame-retardant polyamide composition comprising the components A, B, C, D, E and F and optionally components G and / or H.
- the molded parts according to the invention may be any desired formations. Examples thereof are fibers, films or moldings obtainable from the flame-retardant polyamide molding compositions according to the invention by any desired molding processes, in particular by injection molding or extrusion.
- the preparation of the flame-retardant polyamide molded body according to the invention can be carried out by any desired molding process. Examples include injection molding, pressing, foam injection, gas injection molding, blow molding,
- the molded parts are preferably injection-molded parts or extruded parts.
- the flame-retardant polyamide compositions according to the invention are suitable for the production of fibers, films and moldings, in particular for applications in the electrical and electronics sector.
- the invention preferably relates to the use of the flame-retardant polyamide compositions according to the invention in or for connectors, current-carrying parts in power distributors (Fl protection), circuit boards, potting compounds, power connectors, circuit breakers, lamp housings, LED housings,
- Capacitor housings bobbins and fans, protective contacts, plugs, in / on boards, housings for plugs, cables, flexible printed circuit boards, charging cables for mobile phones, engine covers or textile coatings.
- the invention likewise preferably relates to the use of the flame-retardant polyamide compositions according to the invention for the production of
- the wall thickness of the shaped bodies according to the invention can typically be up to 10 mm. Particularly suitable are moldings with less than 1.5 mm wall thickness, more preferably less than 1 mm wall thickness and particularly preferably less than 0.5 mm wall thickness. The following examples illustrate the invention without limiting it. 1 . Used components
- Polyamide 6.6 (PA 6.6-GV; melting range of 255-260 ° C): Ultramid ® A27 (BASF)
- Polyamide 6 (melting range of 217-222 ° C): Durethan ® B29 (Lanxess)
- Polyamide 6T / 6.6 (melting range 310-320 ° C): Vestamid ® HAT plus 1000 (Evonik) glass fibers (component B):
- the flame retardant components were mixed together in the proportions shown in the tables and fed through the side feeder
- Twin-screw extruder (Leistritz ZSE 27 / 44D type) at temperatures of 260 to 310 ° C in PA 6.6 or at 250 to 275 ° C in PA 6 or at 310 to 330 ° C PA 6T / 6.6 incorporated.
- the glass fibers were added via a second side feed.
- the homogenized polymer strand was stripped off, cooled in a water bath and then granulated.
- Injection molding machine type Arburg 320 C Allrounder
- melt temperatures 250 to 320 ° C to test specimens processed and based on the UL 94 test
- the Glow Wire Flammability Index (GWIT Index) was standardized
- GWIT Glow Wire Ignition Temperature
- the maximum temperature is determined on 3 specimens (for example on 60 x 60 x 1.5 mm plates) with the aid of a glowing wire at temperatures between 550 and 960 ° C
- Measuring procedure indicated the glow wire ignition temperature, which is 25 K (30K between 900 ° C and 960 ° C) higher than the maximum filament temperature, which does not lead to ignition in 3 consecutive tests, even during the contact time of the filament. Ignition is a flame with a burning time of> 5 sec. All the tests of the respective series were carried out under similar conditions (such as temperature programs, screw geometries and injection molding parameters) if no other details were given. Examples 1 -5, 1 a, 1 b, 5a and Comparative Examples V1 -V5 with PA 6.6
- polyamide compositions according to the invention of Examples 1 to 5, 1 a, 1 b and 5a are molding compositions which reach the fire class UL 94 V-0 at 0.4 mm, simultaneously CTI 600 volts and 550 volts, GWFI 960 ° C and GWIT 775 ° C have.
- the addition of component G in Examples 5 and 5a leads to a further improvement of the flame retardancy expressed by a
- the polyamide compositions according to the invention of Examples 6 to 10 are molding compositions which reach the fire classification UL 94 V-0 at 0.4 mm,
- Comparative Example V10 The omission of components D and E in Comparative Example V10 resulted in a prolonged afterburning time as compared to Examples 6-9 reduced CTI value. Comparative Examples V1 1 -V16 with PA 6T / 6.6
- Test specimens could not be produced from any of the PA molding compositions of Comparative Examples V1 1 -V16 since the PA molding compositions proved to be unprocessable.
- the polyamide strands foamed during production and no test specimens suitable for the measurements could be produced.
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Abstract
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DE102017214048.8A DE102017214048A1 (en) | 2017-08-11 | 2017-08-11 | Flame retardant polyamide compositions with high filament ignition temperature and their use |
PCT/EP2018/071445 WO2019030252A1 (en) | 2017-08-11 | 2018-08-08 | Flame-retardant polyamide compositions with a high glow wire ignition temperature and use thereof |
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EP3665220A1 true EP3665220A1 (en) | 2020-06-17 |
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EP18752741.1A Pending EP3665220A1 (en) | 2017-08-11 | 2018-08-08 | Flame-retardant polyamide compositions with a high glow wire ignition temperature and use thereof |
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US (1) | US11692097B2 (en) |
EP (1) | EP3665220A1 (en) |
JP (1) | JP7252202B2 (en) |
KR (1) | KR102561359B1 (en) |
CN (1) | CN109385078B (en) |
DE (1) | DE102017214048A1 (en) |
TW (1) | TWI788386B (en) |
WO (1) | WO2019030252A1 (en) |
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DE102017215777A1 (en) * | 2017-09-07 | 2019-03-07 | Clariant Plastics & Coatings Ltd | Flame retardant combinations for polymer compositions and their use |
WO2023114133A1 (en) * | 2021-12-13 | 2023-06-22 | Celanese International Corporation | Flame retardant thermoplastic polymer composition |
CN114573870A (en) * | 2022-03-10 | 2022-06-03 | 江苏利思德新材料有限公司 | Halogen-free flame retardant composition and application thereof |
CN115109310A (en) * | 2022-07-08 | 2022-09-27 | 兰州瑞朴科技有限公司 | Flame retardant and corresponding flame-retardant plastic product |
CN115746293B (en) * | 2022-11-22 | 2024-05-28 | 浙江新力新材料股份有限公司 | In-situ polymerization flame-retardant nylon material, and preparation method and application thereof |
CN115819844A (en) * | 2022-12-05 | 2023-03-21 | 金发科技股份有限公司 | Alkyl phosphonous acid composite salt and preparation method and application thereof |
CN117229627A (en) * | 2023-08-22 | 2023-12-15 | 金发科技股份有限公司 | Flame-retardant polyamide composition and preparation method and application thereof |
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-
2017
- 2017-08-11 DE DE102017214048.8A patent/DE102017214048A1/en not_active Withdrawn
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2018
- 2018-02-12 CN CN201810143505.1A patent/CN109385078B/en active Active
- 2018-07-19 TW TW107124909A patent/TWI788386B/en active
- 2018-08-08 US US16/637,815 patent/US11692097B2/en active Active
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- 2018-08-08 KR KR1020207007104A patent/KR102561359B1/en active IP Right Grant
- 2018-08-08 EP EP18752741.1A patent/EP3665220A1/en active Pending
- 2018-08-08 JP JP2020506763A patent/JP7252202B2/en active Active
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TW201917172A (en) | 2019-05-01 |
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WO2019030252A1 (en) | 2019-02-14 |
US20210363349A1 (en) | 2021-11-25 |
CN109385078B (en) | 2021-09-14 |
DE102017214048A1 (en) | 2019-02-14 |
JP7252202B2 (en) | 2023-04-04 |
US11692097B2 (en) | 2023-07-04 |
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