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Flame retardant resin composition

A technology of resin composition and flame retardancy, which is applied in the field of flame retardant resin composition, can solve the problems of resin thermal stability decline, physical property decline, resin composition manufacturability, formability and other problems, and achieve flame retardancy Excellent, the effect of improving electrical characteristics

Active Publication Date: 2008-07-09
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, with regard to the compositions of these documents, although it is true that the electric corrosion resistance can be improved to a certain extent (for example, 425-600 volts), it will also cause a significant decline in physical properties
In addition, in the methods described in these documents, pyrophosphoric acid or polyphosphate alkali metal salts with poor thermal stability are also used, so the thermal stability of the resin is also reduced, and the manufacturability and moldability of the resin composition are not satisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-32、 comparative example 1-12

[0234] In the matrix resin (A), halogen-based flame retardants (B), organic and inorganic acid salts (C), electrical property improvers (D), electrical property improvement additives (E), flame retardant additives (F) ), filler (G), heat-resistant stabilizer (H), and processing stabilizer (I) are mixed in the proportions shown in Table 1-4, and then melt-mixed with a 30mm diameter biaxial extruder to prepare a resin combination Things. Using this resin composition, it was molded into a predetermined test piece by an injection molding machine, and the flame retardancy (1.6 mm) and electrical characteristics were measured. In addition, in Comparative Example 10, acidic sodium pyrophosphate was used to induce resin foaming at the time of extrusion preparation and molding of the resin composition. The results are shown in Table 1-4.

[0235] Table 1

[0236] Example

1

2

3

4

5

6

7

8

9

10

11

12

1...

Embodiment 33-48

[0244] In the matrix resin (A), halogen-based flame retardants (B), organic and inorganic acid salts (C), electrical property improvers (D), electrical property improvement additives (E), flame retardant additives (F) ), filler (G), heat-resistant stabilizer (H), processing stabilizer (I), and reactive stabilizer (J) are mixed in the proportions (parts by weight) shown in Table 5, and then mixed with an extruder The pelletized resin composition is prepared by kneading and extrusion. Using the obtained pellets, molded products for testing were produced by an injection molding machine, and the combustibility (1.6 mm) and the electrical corrosion resistance (comparative electrical corrosion index) were evaluated. The results are shown in Table 5.

[0245] table 5

[0246] Example

Embodiment 49-58

[0247] (Examples 49-58, Comparative Examples 13-14)

[0248] In the matrix resin (A), halogen-based flame retardants (B), organic and inorganic acid salts (C), electrical property improvers (D), electrical property improvement additives (E), flame retardant additives (F) ), filler (G), heat-resistant stabilizer (H), and processing stabilizer (I) are mixed in the proportions (parts by weight) shown in Table 6, and then kneaded and extruded with an extruder to prepare pellets The resin composition. Using the obtained pellets, molded products for testing were produced by injection molding, and the combustibility (0.8 mm) and the electrical corrosion resistance (comparative electrical corrosion index) were evaluated. The results are shown in Table 6.

[0249] Table 6

[0250] Example

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PUM

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Abstract

Disclosed is a flame retardant resin composition which is excellent in flame retardance and greatly improved in electrical characteristics. Specifically disclosed is a resin composition composed of (A) a base resin (specifically, a polyester resin, a polyamide resin or the like), (B) a halogen flame retardant (specifically, a bromine-containing flame retardant such as a brominated polybenzyl(meth)acrylate resin or a brominated styrene resin), (C) an organic / inorganic acid salt, specifically an organic phosphinate (such as a metal salt or an aminotriazine compound salt) or an oxo acid salt (such as a polyphosphate or (pyro)sulfate) of a basic nitrogen-containing compound (such as an aminotriazine compound), and (D) an electrical characteristics improver, specifically an olefin resin (such as a-C2-3olefin-(meth)acrylate copolymer), a fluorine resin or a group IV metal compound (such as titanium oxide).

Description

Technical field [0001] The present invention relates to a resin composition having excellent flame retardancy and moldability and improved electrical properties, and a molded body formed from the composition. Background technique [0002] Among thermoplastic resins, polyester resins such as polybutylene terephthalate (PBT) or polyamide resins have excellent mechanical properties, electrical properties, weather resistance, water resistance, chemical resistance or Solvent resistance, so it has been used in various applications such as electrical-electronic parts, mechanical structural parts, and automotive parts. On the other hand, with regard to thermoplastic resins, with the expansion of application fields, in addition to improving their mechanical properties, they are also required to have flame retardancy in terms of safety. The commonly used method is to add a halogen-based flame retardant, or a non-halogen-based flame retardant such as a phosphorus-based compound or a nitroge...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08K3/34C08K3/38C08K5/3477C08K5/5313
CPCC08L67/02C08K5/0066C08K5/5313C08L25/18C08L33/10C08L77/00
Inventor 原科初彦
Owner POLYPLASTICS CO LTD
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