JPS61254A - Fluoroelastomer composition - Google Patents

Abstract

PURPOSE:A fluoroelastomer composition which has excellent electrical properties, is colorable in red, and is obtained by incorporating a perylene, polyazo, quinacridon or anthraquinone compound into a tetrafluoroethylene-propylene copolymer. CONSTITUTION:Into 100pts.wt. tetrafluoroethylene-propylene copolymer is incorporated at least 0.5pt.wt. one or more of a perylene compound of formula I, a polyazo compound of formula II, a quinacridon compound of formula III, and an anthraquinone compound of formula IV. The tetrafluoroethylene-propylene copolymer to be used may contain a component copolymerizable with tetrafluoroethylene and propylene such as ethylene, (meth)acrylic acid and its alkyl ester. The mol ratio of the tetrafluoroethylene to propylene in the copolymer is preferably in the range of 90:10-45:55 in view of heat resistance and moldability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a red-colorable tetrafluorinated nethylene-propylene copolymer composition.

[Prior art] Tetrafluoroethylene-propylene copolymer has heat resistance,
Oil resistance 1. 'In addition to its chemical resistance, it has excellent electrical performance, so it is used in a variety of applications such as gaskets, packing, and hoses, and is particularly promising as a coating material for heat-resistant flexible electric wires. be.

When applying wire coatings to different phases, it is essential to be able to color them because of the need for identification.

However, the inventors have considered that applying the W coloring agent, which has conventionally been used for electric wires and cables, directly to the tetrafluoroethylene-propylene copolymer will cause the following problems. The result is easy-)lko.

However, the heat-resistant inorganic colorants used for fluororesin cannot produce vivid colors unless they are mixed in large quantities, and in that case, the electrical properties, especially the insulation resistance, decrease significantly. On the other hand, general-purpose colorants used for general rubber and plastics contain 1 to 2 phr.
Although it is possible to produce vivid colors even with a small amount of 1, it has poor heat resistance and will fade in an extremely short time in a high temperature atmosphere exceeding 200°C.

[Problem to be solved by the invention 1 The present invention has been made based on the above, and is capable of realizing a yellow molded product that has excellent electrical properties and does not fade even when exposed to high temperatures for a long time. The purpose of the present invention is to provide a tetrafluoride-propylene copolymer composition.

Means for Solving the Problem 1 The composition of the present invention contains perylene, polyazo, quinacridone, and anthraquinone represented by the above general formula, based on 100 parts by weight of the tetrafluoroethylene-propylene copolymer. It is characterized in that it contains at least 0.5 parts by weight of at least one of the following.

(A) Perylene type (C) Quinacridone type ■ Anthraquinone type 1 action + NHq Q Present invention tJ, a3, 4-) Chemically modified dylene-propylene type 4. ii aggregate (2) (in addition to the main components of tetrafluoroethylene and Applications include alkyl 1 sprue, methacrylic acid and its alkyl 1 sprue, vinyl buttride, vinylidene fluoride, monofluoropropene, chloroethyl vinyl ether, glycidyl vinyl ether, chlorotrifluoroethylene, perfluoroalkyl vinyl ether, etc. It may be angled to the right.

In such a copolymer, the molar content of C1 tetrabutylene/propylene is 9515 to 30/70, especially 9
It is preferable to select from the range of 0/10 to 45155 from the viewpoint of heat resistance, moldability, etc., and the content of components other than the main component, which may be added as appropriate, is usually 50 mol% or less,
In particular, it is preferable to select from a range of 30 mol% or less.

The coloring agent added to the tetrafluoroedylene-propylene copolymer is a red heat-resistant pigment selected from perylene, polyazo, quinacridone, and anthraquinone.

The amount of the coloring agent added must be at least 5 parts by weight per 100 parts by weight of the polyethylene tetrafluoride-propylene copolymer, and if the coloring is less than that, the coloring will be insignificant. The upper limit is not particularly limited, but a suitable range is 20 parts by weight, which is within a range that does not cause a decrease in heat resistance properties.

A composition containing a tetrafluoroethylene-propylene copolymer and a colorant has a predetermined shape [J-formation]! After that, cross-linking 2\ is carried out.

For cross-linking, chemical cross-linking with J, or irradiation with electric radiation such as γ-rays or electric f-rays is used to add organic oxides, amines, etc., and limited Not done.

Specific examples of organic oxides include di[-butyl peroxide, t-butylcumyl peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-di(t-butyl peroxide), )-hexyne-3,1,3-bis-(t-butylperoxy-isoprobyl)benzene and the like.

Specific examples of amines include hexamethylene diamine,
So-called alkyl polyamines such as detraethylenepentamine and triethylenetetramine, or their salts such as carbamic acid and cinnamylidenic acid, or piperazine, piperidine, pyridine, and the like.
"vinegar". "1' etc. 17) 70? 7"-(y'
) M') Amines and their salts, etc.

It is also possible to employ crosslinking aids such as allyl compounds, sulfur, organic amines, maleimide, methacrylates, and didinyl compounds, and preferably diallyl phthalate, l.
Allyl compounds such as realyl tS, t-lylyl isocyanurate, and trino7lyl cyanurate can be employed.

In the present invention, in addition to the above-mentioned components, fluorocarbon resins such as polyvinylidene buttomide, ethylenetetrafluoroethylene, polytetrafluoroethylene, and fluororubbers such as vinylidenebutylidene-hekylyfluoropropylene copolymer are appropriately mixed. ShiC is also good. In addition, carbon black such as MT carbon and FT carbon, calcium carbonate, tartar,
Fillers such as clay and silicic anhydride, other reinforcing agents, lubricants, antioxidants, stabilizers, etc. may be added.

[Example 1 (a) Tetrafluoroethylene-propylene copolymer (tetrafluoroethylene/propylene content molar cost - 54/46, number average molecular weight 50,000) 100 parts by weight (b) 1.3-His (t) -butylperoxyisopropylene
1 pill) Benzene 1 part by weight (C) Triallylisocyanurate 5 parts by weight (i Sodium heptaphosphate lx 1 part by weight (e) Titanium white
5 parts by weight and the pigments shown in Table 1 as components ([) were blended and kneaded using an 8-inch roll heated to 60°C. Next, add this to the head: 100'
C, Cylinder 1: Extruded to a thickness of 0.5 mm on the outer circumference of a tin-plated copper stranded wire with an outer diameter of 1.6 mmφ using a 40 m/m extruder (L/D = 22) set at 100 °C and cylinder 2 at 80 °C. covered with steam at 13 atm (temperature: 195
℃) for 3 minutes to prepare an electric wire.

The evaluation results of the insulation resistance and thermal stability of the hue of the electric wire thus prepared are shown in the lower column of Table 1.

Table 1 (/1) Perylene-based OO 00 NH,Q (5) Chromophthalet As is clear from Table 1, Example 1 within the scope of the present invention
- 4 did not exhibit good insulation resistance, hue, or thermal stability of hue.

On the other hand, in Comparative Examples 1 and 2, a general-purpose red colorant was added, but the insulation resistance and initial hue were good, but the heat resistance was poor, and the color faded after 4 days of heat deterioration at 250°C. have done.

Comparative Example 363 Yohi 4 has inorganic power 1-mium-based red added, but when the addition amount is 2 ph+, a good hue is not achieved, and when the amount of addition is 10 pt+r, the insulation resistance increases. It will drop significantly.

[Effects of invention

Claims (1)

[Claims] (1) Tetrafluoroethylene-propylene copolymer 100
1. A fluorine-containing elastomer composition comprising at least 0.5 part by weight of at least one of perylene, polyazo, quinacridone, and anthraquinone represented by the following general formula, based on part by weight. (A) Perylene series ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (B) Polyazo series ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (c) Quinacridone series ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (D) Anthraquinone System ▲ Contains mathematical formulas, chemical formulas, tables, etc. ▼