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Flame-retardant polyamide compositions and use thereof
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A kind of polyamide composition, flame retardant technology, applied in the field of molded parts, flame retardant polyamide composition, can solve problems such as lack
Pending Publication Date: 2019-02-26
CLARIANT INT LTD
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[0008] However, flame-retardant, phosphinate-containing polyamide compositions simultaneously achieving all the required properties, such as good flow properties, good electrical values and effective flame retardancy, wherein at the same time no discoloration tendency occurs, are lacking to date.
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Embodiment 3
[0203] Aluminum salt of diethylphosphinic acid comprising 0.9 mol% of aluminum ethylbutylphosphinate and 0.5 mol% of aluminum ethylphosphonate, prepared according to example 3 of US 7,420,007B2
[0204] Flame retardant FM 2 (components C, D and E):
Embodiment 4
[0205] Aluminum salt of diethylphosphinic acid, comprising 2.7 mol % aluminum ethylbutylphosphinate and 0.8 mol % aluminum ethylphosphonate, prepared according to Example 4 of US 7,420,007 B2
[0206] Flame retardant FM 3 (components C, D and E):
[0207] Aluminum salt of diethylphosphinic acid, comprising 0.5 mol% of aluminum ethylbutylphosphinate and 0.05 mol% of aluminum ethylphosphonate, prepared according to the method of US 7,420,007B2
[0208] Flame retardant FM 4 (components C, D and E):
[0209] Aluminum salt of diethylphosphinic acid, comprising 10 mol% of aluminum ethylbutylphosphinate and 5 mol% of aluminum ethylphosphinate, prepared according to the method of US 7,420,007B2
[0210] Flame retardant FM 5 (component C):
[0211] Aluminum salt of diethylphosphinic acid, prepared analogously to Example 1 of DE 196 07 635 A1
[0212] Flame retardant FM 6 (components C and E):
[0213] Aluminum salt of diethylphosphinic acid, containing 8.8 mol % of aluminum ethylph...
Embodiment 1
[0215] Aluminum salt of phosphonic acid, prepared according to Example 1 of DE 10 2011 120 216 A1
[0216] Flame retardant FM 8 (component F):
[0217] Melaminepolyphosphate, prepared according to the examples of WO 2000 / 002869A1
[0218] Flame retardant FM 9 (not according to the invention):
[0219] Melaminepolyphosphate with an average degree of condensation of 18, prepared analogously to WO 2000 / 002869A1
[0226] 2. Preparation, processing and testing of flame retardant polyamide molding compound
[0227] The flame retardant component was mixed with the antioxidant and with the co-st...
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Abstract
The invention relates to flame-retardant polyamide compositions containing a polyamide having a melting point of less than or equal to 290 DEG C as component A, fillers and / or reinforcing materials ascomponent B, phosphinic acid salt of formula (I) as component C, wherein R1 and R2 represent ethyl, M represents Al, Fe, TiOp or Zn, m represents 2 to 3, and p = (4 - m) / 2, a compound selected fromthe group of Al, Fe, TiOp or Zn salts of ethyl butylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and / or dihexylphosphinic acid as component D, phosphonic acid salt of formula (II) as component E, wherein R3 represents ethyl, Met represents Al, Fe, TiOq or Zn, n represents 2 to 3, and q = (4 - n) / 2, a melaminepolyphosphate having an average degree of condensation of between 2 to 100 as component F, a sterically hindered phenolic antioxidant as component G, and / or an organic phosphite and / or organic phosphonite as component H. The polyamide compositions can be used to produce fibers, films, and moulded bodies, in particular for applications in the electrical and electronics fields.
Description
technical field [0001] The present invention relates to flame-retardant polyamide compositions and moldings produced therefrom. Background technique [0002] Combustible plastics generally have to be equipped with flame retardants in order to be able to meet the high flame retardancy requirements required by plastics processors and in some cases by legislators. Preferably, also for ecological reasons, non-halogenated flame retardant systems are used which form little or no smoke. [0003] Among these flame retardants, the salts of phosphinic acid (phosphinates) have proven to be particularly effective for thermoplastic polymers (DE 2 252 258 A and DE 2 447 727 A). [0004] It is also known that synergistic combinations of phosphinates with specific nitrogen-containing compounds are more effective as flame retardants in a series of polymers than phosphinates alone (WO-2002 / 28953 A1 and DE 197 34 437 A1 and DE 197 37727 A1). [0005] From US 7,420,007 B2 it is known that di...
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