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Flame-retardant polyamide compositions with high heat deflection temperature, and use thereof

A polyamide composition, flame retardant technology, applied in the field of flame retardant polyamide composition and molded parts prepared therefrom, can solve problems such as shortage

Active Publication Date: 2019-02-26
CLARIANT INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Flame-retardant phosphinate-containing polyamide compositions simultaneously achieving all the desired properties, such as good electrical values, excellent heat distortion resistance, and effective flame retardancy, are however lacking to date.

Method used

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  • Flame-retardant polyamide compositions with high heat deflection temperature, and use thereof
  • Flame-retardant polyamide compositions with high heat deflection temperature, and use thereof
  • Flame-retardant polyamide compositions with high heat deflection temperature, and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0147] Aluminum salt of diethylphosphinic acid comprising 0.9 mol% aluminum ethylbutylphosphinate and 0.5 mol% aluminum ethylphosphonate, prepared according to example 3 of US 7,420,007 B2

[0148] Flame retardant FM 2 (components C, D and E):

Embodiment 4

[0149] 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

[0150] Flame retardant FM 3 (components C, D and E):

[0151] Aluminum salt of diethylphosphinic acid, comprising 0.5 mol% aluminum ethylbutylphosphinate and 0.05 mol% aluminum ethylphosphonate, prepared according to the method of US 7,420,007 B2

[0152] Flame retardant FM 4 (components C, D and E):

[0153] Aluminum salt of diethylphosphinic acid, comprising 10 mol% of aluminum ethylbutylphosphinate and 5 mol% of aluminum ethylphosphinate, prepared according to the method of US 7,420,007 B2

[0154] Flame retardant FM 5 (component C):

[0155] Aluminum salt of diethylphosphinic acid, prepared analogously to Example 1 of DE 196 07 635 A1

[0156] Flame retardant FM 6 (components C and E):

[0157] Aluminum salt of diethylphosphinic acid, containing 8.8 mol % of aluminum ethylphosphon...

Embodiment 1

[0159] Aluminum salt of phosphonic acid, prepared according to Example 1 of DE 10 2011 120 218 A1

[0160] 2. Preparation, processing and testing of flame retardant polyamide molding compound

[0161] The flame retardant components were mixed with one another in the proportions given in the table and introduced via the side feed of a twin-screw extruder (type: Leistritz ZSE 27 / 44D) at a temperature of 310 to 330° C. Fiberglass was added through a second side feed. The homogenized polymer strands were withdrawn, cooled in a water bath and subsequently pelletized.

[0162] After sufficient drying, the molding compound was processed into test pieces on an injection molding machine (type: Arburg 320 C Allrounder) at a mass temperature of 300 to 320° C. and tested for fire resistance by means of the UL94 test (Underwriter Laboratories) and classified. In addition to the classification, the afterburn time is also given.

[0163] The relative tracking index of molded parts is dete...

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Abstract

The invention relates to flame-retardant polyamide compositions with a heat deflection temperature HDT-A of at least 280 DEG C. The compositions include: a polyamide with a melting point of greater than or equal to 290 DEG C as component A; fillers and / or reinforcing materials as component B; a 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 is (4-m) / 2; a compound selected from the group containing Al, Fe, TiOp or Zn salts of ethylbutyl phosphinic acid, dibutyl phosphinic acid, ethylhexyl phosphinic acid, butylhexyl phosphinic acid and / or dihexyl phosphinic acid as component D; and a phosphinic acid salt of formula (II) as component E, wherein R3 represents ethyl, Met represents Al, Fe, TiOqor Zn, n represents 2 to 3, and q is (4-n) / 2. The polyamide compositions can be used to produce fibres, films and moulded bodies, in particular for electrical and electronic applications.

Description

technical field [0001] The present invention relates to flame-retardant polyamide compositions and moldings produced therefrom, which are distinguished by a high heat deflection temperature (HDT). 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K13/04C08K7/14C08K5/5313C08K5/5317
CPCC08K5/5313C08K5/5317C08K7/14C08K13/04C08K2201/004C08K2201/003C08L2201/08C08L2201/02C08L77/06C09K21/12C08K2201/014C08K5/0066C08K5/34922C08K3/32C08L77/00C08K2003/321C08K2201/005
Inventor H·鲍尔S·赫罗尔德M·西肯
Owner CLARIANT INT LTD
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