Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• • 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
  • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
  • C08K5/41—Compounds containing sulfur bound to oxygen
  • C08K5/42—Sulfonic acids; Derivatives thereof
• • 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
  • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
  • C08K5/43—Compounds containing sulfur bound to nitrogen
• • 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
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
  • C08L71/02—Polyalkylene oxides
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
  • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
  • C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors

Definitions

• the present invention relates to compositions containing polycarbonate, and a combination of polyol and alkali or alkaline earth metal salt of an aliphatic or aromatic sulfonic acid, a sulfonamide or a sulfonimide in certain amounts.
• Flame-resistant plastic molding compounds are used for a variety of applications. Typical applications of such plastics include electrical engineering and electronics, where they are used for example for the production of carriers of live parts or in the form of television and monitor housings. But also in the interior trim of rail vehicles or aircraft, flame retardant plastics have found their firm place. In addition to good flame retardancy, the plastics used must also show other positive properties at a high level.
• JP-A 02-202544 comprises compositions containing aromatic sulfonic acid metal salts in amounts of 0.01 to 2, preferably 0.05 to 1.5 parts by weight and 0.01 to 3.0, preferably 0.01 to 2.0 wt Parts (in each case based on 100 parts by weight of polycarbonate) of alkylene glycol oligomers and injection molded articles thereof with an improved flame retardance and a good transparency and reduced tendency to color changes.
• the object of this application was to provide flame retarded transparent polycarbonate (PC) compositions. It has been found that a combination of polyalkylene glycol of 200 to 1000 molecular weight with a metal salt of an aromatic sulfonic acid provides a flame-retardant transparent PC composition.
• JP-A 02-202544 expressly points out that the transparency of compositions containing polyalkylene glycol with a molecular weight> 1000 decreases.
• the application describes polycarbonate compositions containing 0.1% by weight of potassium diphenyl sulfonate and 0.3% by weight of polyethylene glycol having a molecular weight of 600 and 3400, respectively (examples).
• EP-A 0 374 816 relates to a process for dispersing one or more flame retardant additives in carbonate polymers to improve the impact properties of the flame retardant polymer.
• No. 6,469,072 B1 discloses a method for dispersing solid additives in polymers with the aid of mixers.
• No. 6,455,620 B1 discloses compositions which contain an oxidation catalyst and at least one polyether from the group of the polyalkylene glycols.
• US-A-3215663 describes a process for dispersing pigments in high molecular weight linear synthetic polymers.
• compositions comprising polycarbonate with a combination of alkali metal or alkaline earth metal salt of an aliphatic or aromatic sulfonic acid, a sulfonamide or a sulfonimide and small amounts of polyol has an excellent property profile in terms of transparency and flame retardancy, in particular in the case of polyols with a molecular weight> 1000, overall lower
• the present invention therefore relates to a composition containing polycarbonate and 0.01% by weight to ⁇ 0.3,% by weight of polyol and 0.01% by weight to 0.8% by weight of one.
• Alkali or alkaline earth metal salt of a respective aliphatic or aromatic sulfonic acid, a sulfonamide or a Sulfoni- mids Such compositions can be used advantageously in various applications. These include, for example, applications in the electrical / electronics sector, such as lamp housings, electrical circuit breakers, power strips or television or monitor housings.
• the compositions according to the invention can be used in the form of panels for architectural or industrial glazings, as linings of rail vehicle and aircraft interiors, to which in each case increased flame retardance requirements are placed.
• the present invention also relates to a process for the preparation of a composition according to the invention, characterized in that polycarbonate, at least one polyol and at least one alkali or alkaline earth metal salt of a respective aliphatic or aromatic sulfonic acid, a sulfonamide or a sulfonimide are combined and mixed, optionally in solvent optionally homogenizing and removing the solvent. Excluding the polymer compound, for example, granulated and processed directly into moldings.
• Polycarbonates for the compositions according to the invention are homopolycarbonates, copolycarbonates and thermoplastic, preferably aromatic, polyester carbonates, which in the present application are subsumed under the name "polycarbonate”.
• the homopolycarbonates, copolycarbonates and polyestercarbonates according to the invention generally have weight average molecular weights of 2,000 to 200,000, preferably 3,000 to 150,000, in particular 5,000 to 100,000, very particularly preferably 8,000 to 80,000, in particular 12,000 to 70 000 (determined by GPC with polycarbonate calibration), very particularly preferably average molecular weights M w of 16,000 to 40,000 g / mol.
• Preferred compounds to be used as starting compounds are bisphenols of the general formula (1) HO-Z-OH, wherein Z is a divalent organic radical having from 6 to 30 carbon atoms and containing one or more aromatic groups.
• Examples of such compounds are bisphenols which belong to the group of dihydroxydiphenyls, bis (hydroxyphenyl) alkanes, indanebisphenols, bis (hydroxyphenyl) ethers, bis (hydroxyphenyl) sulfones, bis (hydroxyphenyl) ketones and ⁇ , ⁇ '-bis (hydroxyphenyl) - diisopropylbenzenes.
• Particularly preferred bisphenols belonging to the aforementioned linking groups are bisphenol-A, tetraalkylbisphenol-A, 4,4- (meta-phenylenediisopropyl) diphenol (Bisphenol M), 4,4-
• the bisphenol compounds to be used according to the invention are reacted with carbonic acid compounds, in particular phosgene or, during the melt transesterification process, diphenyl carbonate or dimethyl carbonate.
• Polyestercarbonates are obtained by reacting the abovementioned bisphenols, at least one aromatic dicarboxylic acid and optionally carbonic acid equivalents.
• Suitable aromatic dicarboxylic acids are, for example, phthalic acid, terephthalic acid, isophthalic acid, 3,3'- or 4,4'-diphenyldicarboxylic acid and benzophenone dicarboxylic acids.
• a portion, up to 80 mole%, preferably from 20 to 50 mole%, of the carbonate groups in the polycarbonates may be replaced by aromatic dicarboxylic acid ester groups.
• Inert organic solvents used in the interfacial process include, for example, dichloromethane, the various dichloroethanes and chloropropane compounds, tetrachloromethane, trichloromethane, chlorobenzene, and chlorotoluene. Preference is given to using chlorobenzene or dichloromethane or mixtures of dichloromethane and chlorobenzene.
• the interfacial reaction can be accelerated by catalysts such as tertiary amines, in particular N-alkylpiperidines or onium salts. Preference is given to tributylamine,
• Triethylamine and N-ethylpiperidine used.
• the catalysts mentioned in DE-A 42 38 123 are used.
• the polycarbonates can be deliberately and controlled branched by the use of small amounts of branching.
• branching agents are: isatin biscresol, phloroglucinol, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -hepten-2; 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) heptane; 1, 3,5-tri- (4-hydroxyphenyl) -benzene; 1,1,1-tris (4-hydroxyphenyl) ethane; Tri- (4-hydroxyphenyl) phenylmethane; 2,2-bis [4,4-bis (4-hydroxyphenyl) -cyclohexyl] -propane; 2,4-bis (4-hydroxyphenylisopropyl) phenol; 2,6-bis- (2-hydroxy-5'-methyl-benzyl) -4-methyl phenol; 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) -propane; Hexa- (4- (4-hydroxyphenyl-isopropyl) -phenyl)
• the optionally used 0.05 to 2 mol%, based on diphenols, of branching agents or mixtures of the branching agents can be used together with the diphenols but can also be added at a later stage of the synthesis.
• Chain terminators can be used.
• the chain terminators used are preferably phenols such as phenol, alkylphenols such as cresol and 4-tert-butylphenol, chlorophenol, bromophenol, cumylphenol or mixtures thereof in amounts of 1-20 mol%, preferably 2-10 mol%, per mol bisphenol. Preference is given to phenol, 4-tert-butylphenol or cumylphenol.
• Chain terminators and branching agents may be added separately or together with the bisphenol to the syntheses.
• the preferred polycarbonate according to the invention is bisphenol A homopolycarbonate.
• inventive polycarbonates can also be prepared by the melt transesterification process.
• the melt transesterification process is described, for example, in the Encyclopedia of Polymer Science, Vol. 10 (1969), Chemistry and Physics of Polycarbonates, Polymer
• the aromatic dihydroxy compounds already described in the phase boundary process are transesterified in the melt with carbonic acid diesters with the aid of suitable catalysts and optionally further additives
• Carbonic acid diesters according to the invention are those of the formula (1) and (2) Formula 1)
• R, R 1 and R "independently of one another may represent H, optionally branched C r C 34 -alkyl / cycloalkyl, C 7 - C 34 -alkaryl or C 6 -C 34 -aryl,
• Naphthylphenyl-phenylcarbonate di-naphthylphenylcarbonate, di-tert-butylphenyl-phenylcarbonate, di- (di-tert-butylphenyl) carbonate, dicumylphenyl-phenylcarbonate, di (dicumylphenyl) carbonate,
• the proportion of carbonic acid ester is 100 to 130 mol%, preferably 103 to 120 mol%, particularly preferably 103 to 109 mol%, based on the dihydroxy compound.
• basic catalysts such as, for example, alkali metal and alkaline earth metal hydroxides and oxides but also ammonium or phosphonium salts, referred to below as onium salts, are used in the melt transesterification process as described in the cited literature.
• Onium salts, particularly preferably phosphonium salts are preferably used here.
• Phosphonium salts in the context of the invention are those of the formula (3)
• Ci-C 10 alkyls, C 6 -C 0 aryls, C7 -Cio-aralkyls or C 5 -C 6 - can be cycloalkyls, preferably methyl or C 4 -C 6 aryls, particularly preferably methyl or phenyl, and
• X is an anion such as halide, hydroxide, sulfate, hydrogen sulfate, hydrogen carbonate, carbonate, a halo-, preferably chloride, or may be an alcoholate of the formula OR, wherein R is C 6 -Q 4 - aryl or C 7 -C 2 -aralkyl, preferably Phenyl, may be preferred catalysts
• Tetraphenylphosphonium chloride Tetraphenylphosphonium hydroxide
• Tetraphenylphosphonium phenolate more preferably tetraphenylphosphonium phenolate.
• the catalysts are preferably used in amounts of 10.sup.- 8 to 10.sup.-3 mol, based on one mole of bisphenol, more preferably in amounts of 10.sup.-7 to 10.sup.- 4 mol.
• catalysts can be used alone or optionally in addition to the onium salt to increase the rate of polymerization.
• These include salts of alkali metals and alkaline earth metals, such as hydroxides, alkoxides and aryloxides of lithium, sodium and potassium, preferably sodium hydroxide, alkoxide or aryloxide salts. Most preferred are sodium hydroxide and sodium phenolate.
• the amounts of cocatalyst can range from 1 to 200 ppb, preferably from 5 to 150 ppb, and most preferably from 10 to
• the transesterification reaction of the aromatic dihydroxy compound and the carbonic diester in the melt is preferably carried out in two stages.
• the melting of the aromatic dihydroxy compound and the carbonic diester at temperatures of 80 to 250 0 C, preferably 100 to 230 0 C, particularly preferably 120 to 190 0 C under normal pressure in 0 to 5 hours, preferably 0.25 to 3 hours instead.
• the catalyst is prepared by applying a vacuum (up to 2 mm Hg) and increasing the temperature (up to 260 0 C) by distilling off the monophenol, the oligocarbonate of the aromatic dihydroxy compound and the carbonic acid diester. In this case, the majority of vapors from the process accrue.
• the oligocarbonate thus prepared has an average molecular weight M w (determined by measuring the relative solution viscosity in dichloromethane or in mixtures of equal amounts by weight of phenol / o-dichlorobenzene calibrated by light scattering) in the range from 2000 g / mol to 18 000 g / mol, preferably from 4 000 g / mol to 15,000 g / mol.
• the polycarbonate is prepared in the polycondensation by further increasing the temperature to 250 to 32O 0 C, preferably 270 to 295 ° C and a pressure of ⁇ 2 mm Hg. The remainder of the vapors are removed from the process.
• the catalysts can also be used in combination (two or more) with each other.
• alkali / alkaline earth metal catalysts When using alkali / alkaline earth metal catalysts, it may be advantageous to add the alkali / alkaline earth metal catalysts at a later time (eg, after the oligocarbonate synthesis in the second stage polycondensation).
• the reaction of the aromatic dihydroxy compound and the carbonic acid diester to form the polycarbonate can be carried out batchwise or preferably continuously, for example in stirred vessels, thin-film evaporators, falling-film evaporators, stirred tank cascades, extruders, kneaders, simple disk reactors and high-viscous disk reactors.
• branched poly- or copolycarbonates can be prepared by using polyfunctional compounds.
• the polycarbonates according to the invention may also contain other aromatic polycarbonates and / or other plastics such as aromatic polyesters such as polybutylene terephthalate or polyethylene terephthalate, polyamides, polyimides, polyesteramides, polyacrylates and polymethacrylates such as
• polycarbonates according to the invention and optionally further plastics contained can also be added in conventional amounts of the additives customary for these thermoplastics, such as fillers, UV stabilizers, heat stabilizers, antistatic agents and pigments; if necessary, the demolding behavior, the flow behavior, and / or the flame retardancy can be improved by the addition of external mold release agents, flow agents, and / or flame retardants (z.
• Such compounds are z.
• Polyols in the context of the present invention are those having number-average molecular weights of 250 to 20,000, preferably 500 to 8,000, more preferably 500 to 6,000, most preferably 1100 to 6,000 and a functionality of 1.5 to 8.
• these are polyether polyols containing two to four, preferably two, hydroxyl groups.
• trade products e.g. the polytetrahydrofuran homopolymers Tetrathane® 250 or
• Suitable polyether polyols are also block copolymers and copolymers having an irregular sequence of the chain constituents and also mixtures of the polyether polyols.
• Polyetherpolyols can be prepared by known processes, for example by anionic polymerization of alkylene oxides in the presence of alkali metal hydroxides or alkali metal cosolvents as catalysts and with addition of at least one starter molecule which contains reactive hydrogen atoms or by cationic polymerization of alkylene oxides in the presence of Lewis acids such as antimony pentachloride or borofluoride etherate or by double metal cyanide (DMC) catalysis.
• Suitable alkylene oxides contain 2 to 4 carbon atoms in the alkylene radical. Examples are tetrahydrofuran, 1, 2-propylene oxide, 1,2- or 2,3-butylene oxide.
• the alkylene oxides can be used individually, alternately in succession or as mixtures.
• Suitable starter molecules are water or dihydric and trihydric alcohols, such as ethylene glycol, 1,2-propanediol and 1,3-propanediol, diethylene glycol, dipropylene glycol, 1,4-ethanediol, glycerol, trimethylolpropane, etc.
• AIs polyether polyols are furthermore polymer-modified polyether polyols, preferably graft polyether, in particular those based on styrene and / or acrylonitrile, which can be obtained by in situ polymerization of acrylonitrile, styrene or preferably mixtures of styrene and acrylonitrile.
• polyesters which may be used are the polyesters, polythioethers, polyacetals, polycarbonates and polyesteramides having at least two, preferably from 2 to 4, hydroxyl groups and, as a rule, a number-average molecular weight of from 400 to 8000.
• the bifunctional polyether derivatives may be a homopolymer, a block copolymer or a copolymer having an irregular sequence of the chain building blocks.
• mixtures of the polyesters and polyethers can be used.
• the stated polyols can be used in the context of the present invention either alone or as mixtures of different polyols.
• the proportion of polyol or of polyols in the compositions according to the invention is from 0.01% by weight to ⁇ 0.3% by weight, preferably from 0.01% by weight to 0.25% by weight, very particularly preferably 0.01% by weight % to 0.12% by weight, in particular 0.03 to 0.11% by weight, in each case based on the total composition.
• polyols having four carbon atoms in the alkylene moiety is preferred.
• An example of such a preferred polyol is polytetrahydrofuran.
• alkali or alkaline earth metal salts of aliphatic or aromatic sulfonic acid sulfonamide and sulfonimide derivatives are used.
• Suitable salts are: sodium or potassium perfluorobutanesulfate, sodium or potassium perfluoromethanesulfonate, sodium or potassium perfluorooctane sulfate, sodium or potassium 2,5-dichlorobenzenesulfate, sodium or potassium 2,4,5-trichlorobenzenesulfate, sodium or potassium methylphosphonate , Sodium or potassium (2-phenyl-ethylene) phosphonate, sodium or potassium pentachlorobenzoate, sodium or potassium 2,4,6-trichlorobenzoate, sodium or potassium 2,4-dichlorobenzoate, lithium phenylphosphonate , Sodium or potassium diphenylsulfone sulfonate, sodium or potassium 2-formylbenzenesulfonate, sodium or potassium (N-benzenesulfonyl) benzenesulfonamide.
• Potassium salt, N- (N'-benzylaminocabonyl) sulphanylimide potassium salt Very particular preference is given to potassium nona-fluoro-1-butanesulfonate and sodium or potassium diphenylsulfonic acid sulfonate.
• Potassium nona-fluoro-1-butane sulfonate is including as Bayowet ® C4 (Lanxess, Leverkusen, Germany, CAS no. 29420-49-3), RM64 (company Miteni, Italy) or 3M TM Perfluorobutanesulfonyl fluorides FC-51 (Company 3M, USA) commercially available. Likewise suitable are mixtures of the salts mentioned.
• potassium perfluorobutanesulfonate potassium diphenyl sulfone sulfonate, N- (p-tolylsulfonyl) p-toluenesulfimide potassium salt, N- (N'-benzylaminocabonyl) sulfanylimide potassium salt, most preferably potassium nona-fluoro-1 -butansulfonat.
• organic flame retardant salts are used in amounts of 0.01% by weight to 0.8% by weight, preferably 0.02% by weight to 0.6% by weight, particularly preferably 0.03% by weight to 0.2% by weight, very particularly preferably 0.03 to 0.15% by weight, in particular 0.03 to 0.065% by weight, in each case based on the total composition used in the molding compositions.
• flame retardants are e.g. phosphorus-containing flame retardants selected from the groups of mono- and oligomeric phosphoric and phosphonic acid esters, phosphonateamines, phosphonates, phosphinates, phosphites, hypophosphites, phosphine oxides and phosphazenes, whereby mixtures of several components selected from one or more of these groups can be used as flame retardants Question.
• Other preferably halogen-free phosphorus compounds which are not specifically mentioned here can also be used alone or in any combination with other preferably halogen-free phosphorus compounds. These include purely inorganic phosphorus compounds such as boron phosphate hydrate.
• phosphorus-containing flame retardants phosphonatamines into consideration. The production of phosphonatamines is described, for example, in US Pat. No. 5,844,028.
• Phosphazenes and their preparation are described for example in EP-A 728 811, DE-A 1 961668 and WO 97/40092. It is also possible to use siloxanes, phosphorylated organosiloxanes, silicones or siloxysilanes as flame retardants, as described in more detail, for example, in EP 1 342 753, in DE 10257079A and in EP 1 188 792.
• Phosphorus-containing flame retardant additives in the sense of the invention are preferably selected from the groups of mono- and oligomeric phosphoric and phosphonic acid esters, phosphonatoamines and phosphazenes, it also being possible to use mixtures of several components selected from one or several of these groups as flame retardant additive. Others too Non-specifically mentioned halogen-free phosphorus compounds can be used alone or in any combination with other halogen-free phosphorus compounds.
• Preferred mono- and oligomeric phosphoric or phosphonic acid esters are phosphorus compounds of the general formula (4)
• Rl, R2, R3 and R ⁇ independently optionally halogenated each C ⁇ to Cg alkyl, in each case optionally substituted by alkyl, preferably Cj to C4 alkyl, and / or halogen, preferably chlorine, bromine, substituted C5 to Cg-cycloalkyl , Cg to C 2 ( C ) -aryl or C 7 to C 12 -aralkyl,
• n independently, 0 or 1
• X is a mononuclear or polynuclear aromatic radical having 6 to 30 C atoms, or a linear or branched aliphatic radical having 2 to 30 C atoms, which may be OH-substituted and may contain up to 8 ether bonds.
• Rl, R ⁇ , R3 and R ⁇ are preferably each independently alkyl of C j to C ⁇ alkyl, phenyl, naphthyl or phenyl-Ci-C ⁇ .
• the aromatic groups R 1, R 2, R 3 and R 3 may in turn be substituted by halogen and / or alkyl groups, preferably chlorine, bromine and / or C 1 to C 1 alkyl.
• Particularly preferred aryl radicals are cresyl, phenyl, xylenyl, propylphenyl or butylphenyl and the corresponding brominated and chlorinated derivatives thereof.
• X in the formula (4) preferably denotes a mono- or polynuclear aromatic radical having 6 to 30 C atoms. This is preferably derived from bisphenols of the formula (1).
• n in the formula (4) may independently be 0 or 1, preferably n is the same
• q represents values of 0 to 30, preferably 0.3 to 20, particularly preferably 0.5 to 10, in particular especially 0.5 to 6, very particularly preferably 1.1 to 1.6.
• X is derived from resorcinol, hydroquinone, bisphenol A or diphenylphenol.
• X is particularly preferably derived from bisphenol A.
• Phosphorus compounds of the formula (4) are, in particular, tributyl phosphate, triphenyl phosphate, tricresyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, diphenyl 2-ethyl cresyl phosphate, tri (isopropylphenyl) phosphate, resorcinol bridged oligophosphate and bisphenol A bridged oligophosphate.
• the use of oligomeric phosphoric acid esters of the formula (4) derived from bisphenol A is particularly preferred.
• phosphorus-containing flame retardant additive is bisphenol A-based oligophosphate according to formula (IVa).
• the phosphorus compounds are known (cf., for example, EP-A 0 363 608, EP-A 0 640 655) or can be prepared by known methods in an analogous manner (eg Ullmanns Enzyklopädie der - -
• the stated q value is the mean q value.
• the mean q value can be determined by determining the composition of the phosphorus compound (molecular weight distribution) by means of a suitable method (gas chromatography (GC), high pressure liquid chromatography (HPLC), gel permeation chromatography (GPC)) and from this the mean values for q are calculated.
• phosphonatamines and phosphazenes as described in WO 00/00541 and WO 01/18105, can be used as flame retardant additives.
• the flame retardant additives can be used alone or in any desired mixture with one another or in admixture with other flameproofing additives.
• Phosphorus-containing flame retardant additives are commercially available, for. B. Reofos ® BAPP (Chemtura, Indianapolis, USA), NcendX ® P-30 (Albemarle, Baton Rouge, Louisiana, USA), Fyrolflex ® BDP (Akzo Nobel, Arnhem, Netherlands), CR 741 ® (Daihachi , Osaka,
• Reofos ® TPP from Chemtura
• Fyrolflex ® TPP Akzo Nobel
• Disflamoll ® TP Lixess
• Reofos RDP Chemtura
• Fyrolflex ® RDP Akzo Nobel
• Phosphorus-containing flame retardants are added as required, preferably in amounts of up to 30% by weight, more preferably 2 to 25% by weight, very preferably 3 to 15% by weight (based on the total composition).
• anti-drip agents can be added to the compositions.
• anti-dripping agent for example, polytetrafluoroethylene (PTFE) is called.
• PTFE polytetrafluoroethylene
• PTFE is commercially available in various product qualities. These include additives such as Hostaflon TF2021 ® or PTFE blends as Metablen ® A-3800 (40% PTFE CAS 9002-84-0 and about 60% methyl methacrylate / butyl acrylate copolymer CAS 25852-37-3 from Misubishi- rayon) or Blendex ® B449 (about 50%
• PTFE and about 50% SAN [from 80% styrene and 20% acrylonitrile] from Chemtura.
• PTFE is used in amounts of 0.05% by weight to 5% by weight, preferably 0.1% by weight to 1.0% by weight, more preferably 0.1% by weight to 0.5% by weight, based in each case on Total composition used.
• brominated compounds such as brominated oligocarbonates (eg Tetrabromobisphenol A oligocarbonate BC-52 ®, ® BC-58, BC-52HP ® from Chemtura), poly pentabrombenzylacrylate (eg FR 1025 from Dead Sea Bromine (DSB)), oligomeric reaction products from tetrabromobisphenol A epoxides with (eg 2300 and FR 2400 from DSB), or brominated oligo- or polystyrenes (eg Pyro-Chek ® 68PB from Ferro Corporation, PDBS 80 and Fire Master ® PBS-64HW from Chemtura).
• brominated oligocarbonates eg Tetrabromobisphenol A oligocarbonate BC-52 ®, ® BC-58, BC-52HP ® from Chemtura
• poly pentabrombenzylacrylate eg FR 1025 from Dead Sea Bromine (DSB)
• brominated oligocarbonates based on bisphenol A in particular tetrabromobisphenol A oligocarbonat.
• bromine-containing compounds are used in amounts of 0.1% by weight to 30% by weight, preferably 0.1% by weight to 20% by weight, more preferably 0.1% by weight to 10% by weight and most preferably 0.1 % By weight to 5.0% by weight, based in each case on the total composition.
• chlorine-containing flame retardants such as tetrachlorophthalimides can be used.
• tetrachlorophthalimides according to the invention of the formula (7) are: N-methyltetrachlorophthalimide, N-ethyltetrachlorophthalimide, N-propyltetrachlorophthalimide, N-isopropyltetrachlorophthalimide, N-butyltetrachlorophthalimide, N- Isobutyltetrachlorophthalimide, N-phenyltetrachlorophthalimide, N- (4-chlorophenyl) tetrachlorophthalimide, N- (3,5-dichlorophenyl) tetrachlorophthalimide, N- (2,4,6-trichlorophenyl) -tetrachlorophthalimide, N-naphthyltetrachlorophthalimide.
• suitable tetrachlorophthalimides in the meaning of the invention according to formula (7) are: N, N, N
• N N'-propylene-di-tetrachlorophthalimide N, N'-butylene-di-tetrachlorophthalimide N, N'-p-phenylene-di-tetrachlorophthalimide, 4 ) 4'-di-tetrachlorophthalimido-diphenyl, N- (tetrachlorophthalimido) - tetrachlo ⁇ hthalimid.
• N-methyl and N-phenyltetrachlorophthalimide Particularly suitable for the purposes of the invention are N-methyl and N-phenyltetrachlorophthalimide, N, N'-ethylene-di-tetrachlorophthalimide and N- (tetrachlorophthalimido) - tetrachlorophthalimide.
• the abovementioned chlorine-containing compounds are used in amounts of 0.1% by weight to 30% by weight, preferably 0.1% by weight to 20% by weight, more preferably 0.1% by weight to 10% by weight and most preferably 0 , 1% by weight to 5.0% by weight, based in each case on the total composition.
• the bromine- or chlorine-containing flame retardants can also be used in combination with
• Antimony trioxide are used.
• the present invention is not limited to said flame retardants, but other flame retardant additives, such as. in J. Troitzsch, "International Plastics Flammability Handbook", Hanser Verlag, Kunststoff 1990 described.
• the polycarbonates and copolycarbonates according to the invention may furthermore be added in conventional amounts to the customary additives for these thermoplastics, such as fillers, UV stabilizers, heat stabilizers, mold release agents, flow agents, antistatic agents and pigments.
• Thermostabilizers such as, for example, and preferably tris- (2,4-di-tert-butylphenyl) phosphate or triphenylphosphine are preferably added in an amount of 10 to 3000 ppm based on the total composition.
• composition containing polycarbonate, at least one polyol and at least one flame retardant additive is carried out by conventional incorporation methods and can, for example, by mixing solutions of the flame retardant and the polyol with a solution of polycarbonate in suitable solvents such as dichloromethane, haloalkanes, haloaromatics, chlorobenzene and xylenes are realized.
• suitable solvents such as dichloromethane, haloalkanes, haloaromatics, chlorobenzene and xylenes are realized.
• suitable solvents such as dichloromethane, haloalkanes, haloaromatics, chlorobenzene and xylenes are realized.
• suitable solvents such as dichloromethane, haloalkanes, haloaromatics, chlorobenzene and xylenes are realized.
• the substance mixtures are then preferably homogenized in a known manner by extrusion.
• composition can be mixed in conventional mixing devices such as screw extruders (for example twin-screw extruder, ZSK), kneaders, Brabender or Banbury mills and then extruded. After extrusion, the extrudate can be cooled and comminuted. It is also possible to premix individual components and then to add the remaining starting materials individually and / or likewise mixed.
• compositions according to the invention can be worked up in a known manner and processed to give any shaped bodies, for example by extrusion, injection molding or extrusion blow molding.
• Coextruded polycarbonate solid plates can, for. B. with the help of the following machines and Appa- rates are manufactured:
• Coextruded polycarbonate web plates can, for. B. using the following machines and apparatus:
• a coextruder for applying the cover layer with a screw of length 25 D and a diameter of 30 mm
• the polycarbonate granules of the base material are fed to the hopper of the main extruder, the coextrusion material of the coextruder.
• the melting and conveying of the respective material takes place. Both material melts are combined in the coexadapter and form a composite after leaving the die and cooling.
• the other facilities are used for transporting, cutting and depositing the extruded sheets.
• Sheets without a coextrusion layer are prepared accordingly either by not operating the coextruder or by filling it with the same polymer composition as the main extruder.
• the flame retardance test was carried out on test bars of dimensions 127xl2.7xX mm, where X is the thickness of the test specimen indicated in the table.
• the device for compounding consists of:
• a co-rotating twin-screw mixer (ZSK 53 from Werner & Pfleiderer) with a screw diameter of 53 mm
• Polycarbonate (granules) polycarbonate (based on bisphenol A) with an average molecular weight M w of 28000 (Makrolon® 2808 from Bayer MaterialScience AG).
• Polycarbonate (powder) polycarbonate (based on bisphenol A) powder having an average molecular weight Mw of 31,000 (Makrolon® 3108 from Bayer MaterialScience AG).
• PTHF Polytetrahydrofuran having an average molecular weight of 2900 (Tetrathane® 2900 from Du Pont).
• PEG Polyethylene glycol having an average molecular weight of 8,000.
• PPG Polypropylene glycol having an average molecular weight of 500.
• KFB S Potassium nona-fluoro-1-butanesulfonate

Landscapes

• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Compositions Of Macromolecular Compounds (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40107168

Family Applications (1)

Country Status (8)

Cited By (2)

Families Citing this family (7)

Citations (4)

Family Cites Families (28)

• 2007
  • 2007-11-02 DE DE102007052783A patent/DE102007052783A1/de not_active Withdrawn
• 2008
  • 2008-10-18 WO PCT/EP2008/008836 patent/WO2009056241A1/de not_active Ceased
  • 2008-10-18 EP EP08845390.7A patent/EP2207844B1/de not_active Not-in-force
  • 2008-10-18 JP JP2010532464A patent/JP2011502208A/ja active Pending
  • 2008-10-18 KR KR1020107009639A patent/KR20100087144A/ko not_active Withdrawn
  • 2008-10-18 CN CN2008801144544A patent/CN101842429B/zh not_active Expired - Fee Related
  • 2008-10-30 TW TW097141711A patent/TW200940622A/zh unknown
  • 2008-10-31 US US12/262,346 patent/US20090137709A1/en not_active Abandoned

Patent Citations (4)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events