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Flame retardant composition based on polytrimethylene terephthalate

A technology of flame retardant composition and polyaryl phosphonate, which is applied in the field of fiber products and PTT-based flame retardant composition, can solve the problems that did not mention the use of inorganic nanoparticles

Inactive Publication Date: 2015-09-16
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the flame retardant PTT compositions disclosed in these two patent documents, the flame retardancy of PTT polyester is only improved by adding a flame retardant, and the use of inorganic nanoparticles is not mentioned or involved.

Method used

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  • Flame retardant composition based on polytrimethylene terephthalate
  • Flame retardant composition based on polytrimethylene terephthalate
  • Flame retardant composition based on polytrimethylene terephthalate

Examples

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preparation example Construction

[0073] Preparation and use of flame retardant composition of the present invention

[0074] The flame retardant composition of the present invention can be prepared by conventional blending techniques well known to those skilled in the art, the components (a)-(c) and the optional additive (d) are usually powders or granules at room temperature Form, the blended composition can be formed in many different ways, for example, it can be mixed in the molten state while heating, it can also be pre-mixed in a separate device (such as dry mixing) and then heated, or it can be heated separately and then mixed. The above mixing and heating can be carried out in conventional equipment in the art such as extruders, internal mixers and the like. Specifically, the above-mentioned components (a)-(c) in powder or granular form and optional additives (d) are mixed with heat and extruded in a continuous manner at a temperature sufficient to form a molten blend. out and cut into pellets or ot...

Embodiment 1

[0111] According to the aforementioned method, the flame retardant compositions of Comparative Examples 1-10 and Examples 1-8 were prepared, and their corresponding test samples (molded specimens) were prepared for the LOI test of molded products. The test results are shown in Table 1, The LOI results listed therein are the average values ​​of the test results of the flame retardant composition samples prepared several times.

[0112] Table 1: Composition of the flame retardant composition and LOI test results

[0113]

[0114]

[0115] From the results in Table 1, the following conclusions are obvious.

[0116] It can be seen from comparative examples 2-6 that when only polyaryl phosphonate (b) (i.e. PSPPP) is used, as the content of polyaryl phosphonate increases (for example, the content is 1% by weight and 10% by weight %), the flame retardant performance of the composition increases (for example, LOI is 23.5 and 27.0). It can be seen from Comparative Examples 7-10...

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Abstract

The invention relates to a flame-retardant composition based on polytrimethylene terephthalate (PTT), and also relates to a fiber product prepared from the flame-retardant composition. The flame-retardant composition comprises the following components in percentage by weight: (a) 74-99.4% of polytrimethylene terephthalate, (b) 0.5-10% of polyaryl phosphonate, (c) 0.1-6% of aluminum oxide nanoparticles and / or kaolin nanoparticles and (d) 0-10% of an optionally existent additive.

Description

technical field [0001] The present invention relates to polytrimethylene terephthalate (PTT)-based flame retardant compositions, in particular to PTT-based flame retardant compositions containing polyarylphosphonate flame retardants and inorganic nanoparticles. The invention also relates to articles, especially fibrous articles, comprising or made from the above-mentioned flame-retardant composition. Background technique [0002] Polytrimethylene terephthalate (usually abbreviated as "PTT", "PPT" or "3GT") is generally obtained by polycondensation of 1,3-propanediol and terephthalic acid or terephthalate. A new type of polyester after polyethylene phthalate (often abbreviated as "PET") and polybutylene terephthalate (often abbreviated as "PBT"). PTT resin is superior to PET and PBT in terms of mechanical properties, weather resistance, heat aging resistance and hydrolysis resistance. [0003] PTT fiber combines the softness of nylon, the bulkiness of acrylic and the stain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L85/02C08K3/22C08K3/34D01F6/92D01F1/07
Inventor 吕歆
Owner EI DU PONT DE NEMOURS & CO