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EP0817812A1 - Polyamides ignifuges - Google Patents

Polyamides ignifuges

Info

Publication number
EP0817812A1
EP0817812A1 EP96905736A EP96905736A EP0817812A1 EP 0817812 A1 EP0817812 A1 EP 0817812A1 EP 96905736 A EP96905736 A EP 96905736A EP 96905736 A EP96905736 A EP 96905736A EP 0817812 A1 EP0817812 A1 EP 0817812A1
Authority
EP
European Patent Office
Prior art keywords
polyamide
polyamides
phosphorus
flame
phosphorus compound
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.)
Withdrawn
Application number
EP96905736A
Other languages
German (de)
English (en)
Inventor
Wolfgang Von Gentzkow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0817812A1 publication Critical patent/EP0817812A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5397—Phosphine oxides
    • 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
    • C08G69/48—Polymers modified by chemical after-treatment
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/529—Esters containing heterocyclic rings not representing cyclic esters of phosphoric or phosphorous acids
    • 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
    • C08K5/49—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
    • C08K5/5373—Esters of phosphonic acids containing heterocyclic rings not representing cyclic esters of phosphonic acids
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/5398—Phosphorus bound to sulfur

Definitions

  • the invention relates to a method for producing flame-retardant polyamides.
  • PA Synthetic polyamides
  • PA 6 poly- ⁇ -caprolactam
  • PA 66 polyhexamethylene adipamide
  • PA 11 polyundecanamide
  • PA 12 poly- ⁇ -laurine lactam
  • PA 610 polyhexamethylene sebacin amide
  • PA 612 polyhexamethylene dodecanamide
  • polyamides are self-extinguishing, but they lose this property after the addition of fillers such as glass fibers or pigments.
  • fillers such as glass fibers or pigments.
  • flame retardant is becoming increasingly popular Polyamide needed. In the event of a fire, the flame protection should provide sufficient time to save people and property.
  • halogen compounds are predominantly chlorinated or broken hydrocarbons, which are often combined with zinc compounds or the synergistically effective antimony trioxide, which is carcinogenic in animal experiments.
  • the halogen compounds have the disadvantage of releasing highly corrosive and highly toxic decomposition products, such as hydrogen chloride and hydrogen bromide, in the event of a fire and causing a strong smoke formation; they also reduce the toughness and the tracking resistance of the polyamides.
  • Red phosphorus is mostly used in an encapsulated form. Despite the encapsulation, there is a risk of phosphorus fires at the high processing temperatures.
  • This is achieved according to the invention in that a polyamide, a copolyamide or a polyamide blend at elevated temperature with a monoepoxy-functional phosphorus compound of the structure
  • R 1 and R 2 alkyl, O-alkyl or S-alkyl, each with
  • the phosphorus compound is chemically anchored to the polymer chain. Therefore can be obtained by a simple process phosphor-modified polyamides which - without halogen or red phosphorus - are sufficiently difficult to burn and meet all technical requirements. It has also been shown that the flame resistance that can be achieved depends solely on the amount of phosphorus anchored to the polymer chain.
  • the method according to the invention which takes place at elevated temperature, i.e. generally at a temperature> 150 ° C (upper limit: ⁇ 350 ° C), can be carried out in known heatable mixing devices, such as kneaders, roller mixers and extruders. It is possible both to prepare premixes from the polyamide and the phosphorus compound, for example in a drum mixer or a fluid mixer, and to meter the phosphorus compound directly into the melt of the polyamide, to distribute it therein and to react it with the polyamide, i.e. to anchor on the polymer chain. In order to avoid evaporation losses when adding the phosphorus compound, it has proven to be advantageous to use phosphorus compounds with a molecular weight> 150.
  • additives such as fillers, in particular glass fibers, as well as dyes, anti-aging agents, processing aids, etc.
  • fillers in particular glass fibers, as well as dyes, anti-aging agents, processing aids, etc.
  • dyes can also be used.
  • the additives can also be mixed in beforehand or in a subsequent mixing process.
  • the polyamide blend may advantageously additionally contain other halogen-free flame retardants are added.
  • Mela incyanura, melamine phosphate and magnesium hydroxide are preferably used as such flame retardants.
  • the amount of phosphorus compound required for flame-retardant adjustment of the polyamides depends on their chemical structure and the additives.
  • the polyamides PA 6 and PA 66 require less phosphorus than the polyamides PA 11 and PA 12.
  • polyamide mixtures with a high proportion of filler, such as glass fibers require higher phosphorus concentrations than filler-free mixtures.
  • the required phosphorus content is therefore between 1 and 5% by mass, based on the polyamide mixture. Since the flame resistance of the polyamides depends solely on the phosphorus concentration in the polymer matrix, different amounts of phosphorus compound are required accordingly.
  • the required proportion is - depending on the need and the phosphorus content of the phosphorus compound - 5 to 35% by mass, based on the polyamide mixture.
  • the polymer modification can be carried out very simply and inexpensively in a mixing or extrusion process, as is required in any case for the homogenization of the polyamides after production or during their compounding for various technical purposes;
  • the polyamides contain no volatile components, so that when used in electrical engineering and electronics there is no damage or passivation of electrical contacts; - No corrosive components are released from the polyamides;
  • the polyamides are recyclable.
  • the flame-retardant polyamides produced in accordance with the method according to the invention are advantageously suitable as insulation, construction and housing materials in electrical engineering and electronics.
  • Other areas of application include, among others, automobile construction, the packaging industry, and machine and apparatus construction.
  • the following components are used to manufacture polyamide molding compounds.
  • Component A polyamide 6 with a relative viscosity ⁇ re ] _ of 2.9 (measured as a 0.5% solution in 96% H S0 4 according to ISO 307)
  • Component B polyamide 66 with a relative viscosity ⁇ re ⁇ of 2.7
  • Component C melamine cyanurate
  • Component D glass fibers with an average diameter of
  • components C and D are added — simultaneously or in succession, and then kneading is continued for at least 5 minutes. After the kneading process has ended, the mixture is discharged from the kneader and cooled. The cooled melt is then ground and sprayed into shaped bodies. The flame resistance according to UL 94 V (1.6 mm thick test bars), the modulus of elasticity according to DIN 53457 and the impact resistance according to DIN 53453 are measured on the shaped bodies. The values obtained are shown in Table 2.
  • polyamide 6 listed in Table 2 (component A) are premixed with the specified parts by weight of the phosphorus compound V or VI in a drum mixer or stirred kettle at 100 to 150 ° C. and then in one
  • Double-shaft extruder (ZSK 32, Werner and Pfleiderer) mixed at 300 ° C melt temperature, extruded into a water bath, crushed, dried and sprayed into shaped bodies. The results are summarized in Table 2. Table 1

Landscapes

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

Abstract

Pour produire des polyamides ignifuges, on fait réagir, à haute température, un polyamide, un co-polyamide ou un mélange de polyamides avec un composé du phosphore à fonction monoépoxy, la quantité du composé de phosphore représentant 5 à 35 % de la masse totale, c'est-à-dire du mélange à base de polyamide.
EP96905736A 1995-03-31 1996-03-15 Polyamides ignifuges Withdrawn EP0817812A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19512175 1995-03-31
DE19512175 1995-03-31
PCT/DE1996/000465 WO1996030441A1 (fr) 1995-03-31 1996-03-15 Polyamides ignifuges

Publications (1)

Publication Number Publication Date
EP0817812A1 true EP0817812A1 (fr) 1998-01-14

Family

ID=7758487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96905736A Withdrawn EP0817812A1 (fr) 1995-03-31 1996-03-15 Polyamides ignifuges

Country Status (5)

Country Link
US (1) US5942584A (fr)
EP (1) EP0817812A1 (fr)
JP (1) JPH11502554A (fr)
KR (1) KR19980703312A (fr)
WO (1) WO1996030441A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9609606D0 (en) 1996-05-08 1996-07-10 T & N Technology Ltd Fire-resistant monofilament
GB2312900B (en) * 1996-05-08 2000-03-29 T & N Technology Ltd Flame-retardant monofilament
JP4535557B2 (ja) * 2000-03-31 2010-09-01 旭化成ケミカルズ株式会社 難燃性強化ポリアミド樹脂組成物
DE10051051A1 (de) * 2000-10-14 2002-04-18 Bosch Gmbh Robert Silikonmodifizierte Einkomponentenvergußmasse
DE10151955A1 (de) 2001-10-22 2003-05-08 Bosch Gmbh Robert Massereduzierter Magnetspulenträger
DE102008050371B3 (de) * 2008-10-02 2010-04-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. 1,2-Epoxypropylphosphonsäure und ihre Derivate für flammgeschützte Kunststoffe
US20110196052A1 (en) * 2010-02-05 2011-08-11 Basf Se Flame retardants
RU2012137686A (ru) * 2010-02-05 2014-03-10 Басф Се Огнезащитное средство
DE102010015155A1 (de) * 2010-04-16 2011-10-20 Schaeffler Technologies Gmbh & Co. Kg Elektrisch isolierender Lagerring, insbesondere für ein Wälzlager
JP2014055209A (ja) * 2012-09-11 2014-03-27 Fuji Xerox Co Ltd ポリ乳酸、樹脂組成物、および樹脂成形体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589284A1 (fr) * 1992-09-24 1994-03-30 Basf Corporation Polyamide thermoplastique à inflammabilité réduite

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856369A (en) * 1953-05-08 1958-10-14 Shell Dev Epoxy-substituted esters of phosphoruscontaining acid and their polymers
BE755459A (fr) * 1969-08-28 1971-03-01 Knapsack Ag Oxydes d'epoxyalkylphosphines et leur preparation
DE3609341A1 (de) * 1986-03-20 1987-09-24 Bayer Ag Flammfeste, glasfaserverstaerkte polyamidformmassen
EP0242732B1 (fr) * 1986-04-22 1992-01-08 Bayer Ag Polyamides ignifugés
DE3722118A1 (de) * 1987-07-03 1989-01-12 Brueggemann L Kg Selbstverloeschende thermoplastische massen aus polykondensationsprodukten
DE3909145A1 (de) * 1989-03-21 1990-09-27 Basf Ag Flammgeschuetzte polyamidformmassen auf der basis von cyanguanidin
DE4141861A1 (de) * 1991-12-18 1993-06-24 Du Pont Int Flammwidrige polyamide
US5476887A (en) * 1991-12-18 1995-12-19 E. I. Du Pont De Nemours & Company Flame retardant polyamides

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589284A1 (fr) * 1992-09-24 1994-03-30 Basf Corporation Polyamide thermoplastique à inflammabilité réduite

Also Published As

Publication number Publication date
WO1996030441A1 (fr) 1996-10-03
JPH11502554A (ja) 1999-03-02
US5942584A (en) 1999-08-24
KR19980703312A (ko) 1998-10-15

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