JPH06128413A - Red phosphorus flame-retardant having improved color tone and glass fiber-reinforced flame-retardant plastic composition containing the same - Google Patents
Red phosphorus flame-retardant having improved color tone and glass fiber-reinforced flame-retardant plastic composition containing the sameInfo
- Publication number
- JPH06128413A JPH06128413A JP30472892A JP30472892A JPH06128413A JP H06128413 A JPH06128413 A JP H06128413A JP 30472892 A JP30472892 A JP 30472892A JP 30472892 A JP30472892 A JP 30472892A JP H06128413 A JPH06128413 A JP H06128413A
- Authority
- JP
- Japan
- Prior art keywords
- retardant
- red phosphorus
- flame
- phosphorus flame
- plastic composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はプラスチック材料の難
燃化に使用される赤リン難燃剤に関するものである。詳
しくは，成形品の色調を全色に調色可能な赤リン難燃剤
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a red phosphorus flame retardant used for flame retarding plastic materials. Specifically, it relates to a red phosphorus flame retardant capable of adjusting the color tone of molded articles to all colors.
【０００２】[0002]
【従来の技術】赤リン難燃剤はプラスチック材料の難燃
化に有用であり，近年ハロゲンを含む難燃剤が燃焼時に
ダイオキシンやベンゾフラン等を発生し環境破壊の危険
性が懸念されていることから，非ハロゲン系の難燃剤と
して注目を浴びている。赤リンは他の非ハロゲン系難燃
剤例えば水酸化アルミニウムや水酸化マグネシウムに比
べ，少量の配合でも難燃効果を発揮するので，物性の低
下が少ない利点があるが，大きな欠点としてプラスチッ
クを濃い暗赤色に着色してしまい，黒色にしか調色出来
ない為，色調が重要な多くの外殻用成形品には採用出来
ないことである。そこでプラスチックの特徴である自由
な色調を可能にする赤リン難燃剤の開発が要望されてい
る。2. Description of the Related Art Red phosphorus flame retardants are useful for making plastic materials flame-retardant. In recent years, since flame retardants containing halogens generate dioxin, benzofuran, etc. during combustion, there is a concern that they may cause environmental damage. It has attracted attention as a non-halogen flame retardant. Compared to other non-halogen flame retardants such as aluminum hydroxide and magnesium hydroxide, red phosphorus has a merit of reducing flame retardance even if it is added in a small amount, so it has the advantage of less deterioration in physical properties, but the major drawback is that plastic is dark and dark. Since it is colored in red and can be toned only in black, it cannot be used in many molded products for outer shells where color is important. Therefore, there is a demand for the development of a red phosphorus flame retardant that enables the free color tone that is characteristic of plastics.
【０００３】これに対し，赤リンの表面を酸化チタンと
ポリメタアクリル酸メチルなどのラジカル重合し得るポ
リマ−で被覆することにより，暗赤色を隠蔽する技術が
提案されている。然しこの方法では，高温加工を要する
プラスチック材料に配合する場合，被覆したポリマ−が
溶融して被覆の効果を発揮出来ず，更にガラス繊維強化
材料の場合，酸化チタンの作用でガラス繊維が損傷し，
物性が著しく低下してしまうことが認められる。On the other hand, there has been proposed a technique for covering the dark red color by coating the surface of red phosphorus with a polymer capable of radical polymerization such as titanium oxide and polymethylmethacrylate. However, in this method, when compounded into a plastic material that requires high temperature processing, the coated polymer melts and the effect of the coating cannot be exhibited, and in the case of a glass fiber reinforced material, the glass fiber is damaged by the action of titanium oxide. ，
It is recognized that the physical properties are significantly reduced.
【０００４】[0004]
【発明が解決しようとする課題】本発明者は前述のよう
な従来技術の欠点を改良し，全色に調色可能な赤リン難
燃剤を鋭意研究した結果，特定の処理条件により上記課
題を解決する方法を見出し，本発明を完成させた。The present inventor has improved the drawbacks of the prior art as described above, and as a result of diligent research on a red phosphorus flame retardant capable of toning all colors, as a result, the above-mentioned problems can be solved depending on specific processing conditions. The inventors have found a solution to the problem and completed the present invention.
【０００５】[0005]
【課題を解決するための手段】以下に本発明に係わる赤
リン難燃剤の構成を具体的に説明すると，その要旨は，
赤リンを硫化亜鉛を含む熱硬化性樹脂で被覆することを
特徴とする赤リン難燃剤である。使用する赤リンとして
は，形状が球状に近く，かつ粒子径が２００μｍ以下，
好ましくは５〜２０μｍである。Means for Solving the Problems The constitution of the red phosphorus flame retardant according to the present invention will be specifically described below.
It is a red phosphorus flame retardant characterized by coating red phosphorus with a thermosetting resin containing zinc sulfide. As the red phosphorus used, the shape is close to spherical, and the particle size is 200 μm or less,
It is preferably 5 to 20 μm.
【０００６】赤リン粒子を硫化亜鉛を含む熱硬化性樹脂
で被覆する方法の一例としては，赤リンの水懸濁液に硫
化亜鉛５〜３０重量％を配合した熱硬化性樹脂の初期縮
合物を添加し，攪拌しながら重合を進めることにより，
赤リンの表面を硫化亜鉛を含有した熱硬化性樹脂で被覆
することが出来る。適用される熱硬化性樹脂としては，
フェノ−ル樹脂が好ましい。配合する硫化亜鉛は，粒子
径が２μｍ以下，好ましくは０．５μｍ以下である。As an example of a method of coating red phosphorus particles with a thermosetting resin containing zinc sulfide, an initial condensate of a thermosetting resin in which 5 to 30% by weight of zinc sulfide is mixed with an aqueous suspension of red phosphorus is used. By adding and advancing the polymerization while stirring,
The surface of red phosphorus can be coated with a thermosetting resin containing zinc sulfide. The applicable thermosetting resin is
A phenolic resin is preferred. The zinc sulfide to be blended has a particle size of 2 μm or less, preferably 0.5 μm or less.
【０００７】熱硬化性樹脂中に配合する硫化亜鉛の量
は，目的とする隠蔽力により変わるが，少なくとも熱硬
化性樹脂に対し５重量％白色や淡色を必要とする場合は
５０重量％が必要となる。これ以上濃度を増やしても，
隠蔽力に変化はない。赤リン粒子表面に被覆される熱硬
化性樹脂の量は，赤リン１００重量部に対し２０〜１０
０重量部が好ましい。多くの場合，熱硬化性樹脂中の硫
化亜鉛を３０重量％とし，赤リン１００重量部に対する
熱硬化性樹脂の量を５０重量部とすると，殆どの調色に
対応出来る。The amount of zinc sulfide compounded in the thermosetting resin varies depending on the intended hiding power, but at least 5% by weight is required for the thermosetting resin if white or light color is required. Becomes Even if the concentration is further increased,
There is no change in hiding power. The amount of the thermosetting resin coated on the surface of the red phosphorus particles is 20 to 10 with respect to 100 parts by weight of red phosphorus.
0 parts by weight is preferred. In most cases, if the zinc sulfide in the thermosetting resin is 30% by weight and the amount of the thermosetting resin is 100 parts by weight with respect to 100 parts by weight of red phosphorus, most of the toning can be handled.
【０００８】[0008]
【作用】本発明は赤リンを硫化亜鉛を含む熱硬化性樹脂
で被覆することにより，特有の暗赤色を隠蔽し，外殻用
成形品としても使用可能な難燃性プラスチックを可能に
し，而もガラス繊維強化材料に対しても物性を損なうこ
とのない赤リン難燃剤を提供するものであり，その産業
上の価値は大きい。In the present invention, by coating red phosphorus with a thermosetting resin containing zinc sulfide, the peculiar dark red color can be hidden, and a flame-retardant plastic that can be used as a molded article for outer shell can be obtained. Provides a red phosphorus flame retardant that does not impair the physical properties of glass fiber reinforced materials, and its industrial value is great.
【０００９】[0009]
【実施例】以下に実施例を挙げて本発明の構成を具体的
に説明する。 実施例 平均粒子径１０μｍの赤リン１００重量部を硫化亜鉛３
０重量％を含有したフェノ−ル樹脂５０重量部で被覆し
た白色被覆赤リン１０重量部，ナイロン６樹脂９０重量
部，ガラス繊維７０重量部を混合し，４０ｍｍφ単軸押
出機によりペレットを作成した。得られたペレットは，
７０ｔ射出成形機で幅１２．７ｍｍ，厚さ３．２ｍｍ，
長さ１２７ｍｍの試験片を成形し，物性試験及び燃焼性
試験を行った。EXAMPLES The constitution of the present invention will be specifically described below with reference to examples. Example 100 parts by weight of red phosphorus having an average particle diameter of 10 μm was mixed with zinc sulfide 3
10 parts by weight of white coated red phosphorus coated with 50 parts by weight of phenol resin containing 0% by weight, 90 parts by weight of nylon 6 resin, and 70 parts by weight of glass fiber were mixed, and pellets were prepared by a 40 mmφ single screw extruder. . The pellets obtained are
70t injection molding machine, width 12.7mm, thickness 3.2mm,
A 127 mm-long test piece was molded and subjected to a physical property test and a flammability test.
【００１０】比較例１ 実施例１と同様に，但しフェノ−ル樹脂中に硫化亜鉛を
配合せずにペレットと試験片を作成した。 比較例２ 実施例１と同様に，但しフェノ−ル樹脂中に酸化チタン
１０重量％に変更してペレットと試験片を作成した。こ
の結果を表１に示す。この結果本発明は，赤リン特有の
暗赤色を完全に隠蔽して全色の調色を可能にし，而も物
性の低下が殆どないこが立証された。Comparative Example 1 Pellets and test pieces were prepared in the same manner as in Example 1 except that zinc sulfide was not mixed in the phenol resin. Comparative Example 2 Pellets and test pieces were prepared in the same manner as in Example 1 except that the content of titanium oxide in the phenol resin was changed to 10% by weight. The results are shown in Table 1. As a result, it has been proved that the present invention completely hides the dark red color peculiar to red phosphorus and enables toning of all colors, and there is almost no deterioration in physical properties.
【００１１】[0011]
【発明の効果】本発明は，非ハロゲン系難燃剤たる赤リ
ンの使用に当り，従来の欠点たる，濃暗赤色を隠蔽し，
全色調に使用を可能としかつポリマ−被覆対の溶融も防
止し，更にガラス繊維強化材に対しても物性を損なうこ
とのない赤リン難燃剤及びこれを利用した新規な難燃性
プラスチック組成物の発明である。The present invention uses the non-halogen flame retardant, red phosphorus, to conceal the dark and red color which is a conventional drawback.
Red phosphorus flame retardant that can be used in all tones, prevents melting of polymer-coated pair, and does not impair the physical properties of glass fiber reinforced material, and novel flame retardant plastic composition using the same Is the invention of.
【表１】 [Table 1]
Claims (1)
被覆されたことを特徴とする赤リン難燃剤，及び該赤リ
ンを５〜２５重量部，熱可塑性プラスチック１００重量
部，ガラス繊維３０〜２００重量部よりなる難燃性プラ
スチック組成物。1. A red phosphorus flame retardant characterized by being coated with a thermosetting resin containing zinc sulfide, and 5 to 25 parts by weight of the red phosphorus, 100 parts by weight of a thermoplastic, and 30 to 30 glass fibers. A flame-retardant plastic composition consisting of 200 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30472892A JP3364250B2 (en) | 1992-10-15 | 1992-10-15 | Red phosphorus flame retardant with improved color tone and glass fiber reinforced flame retardant plastic composition containing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30472892A JP3364250B2 (en) | 1992-10-15 | 1992-10-15 | Red phosphorus flame retardant with improved color tone and glass fiber reinforced flame retardant plastic composition containing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06128413A true JPH06128413A (en) | 1994-05-10 |
| JP3364250B2 JP3364250B2 (en) | 2003-01-08 |
Family
ID=17936500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30472892A Ceased JP3364250B2 (en) | 1992-10-15 | 1992-10-15 | Red phosphorus flame retardant with improved color tone and glass fiber reinforced flame retardant plastic composition containing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3364250B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999028382A1 (en) * | 1997-12-03 | 1999-06-10 | Chisso Corporation | Flame retardant for styrene resins and flame-retardant styrene resin composition |
| US7196126B2 (en) * | 2002-04-16 | 2007-03-27 | Cheil Industries Inc. | Thermoplastic flame retardant resin compositions |
| CN104204097A (en) * | 2012-03-21 | 2014-12-10 | 巴斯夫欧洲公司 | Pale-coloured flame-retardant polyamides |
-
1992
- 1992-10-15 JP JP30472892A patent/JP3364250B2/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999028382A1 (en) * | 1997-12-03 | 1999-06-10 | Chisso Corporation | Flame retardant for styrene resins and flame-retardant styrene resin composition |
| US7196126B2 (en) * | 2002-04-16 | 2007-03-27 | Cheil Industries Inc. | Thermoplastic flame retardant resin compositions |
| CN104204097A (en) * | 2012-03-21 | 2014-12-10 | 巴斯夫欧洲公司 | Pale-coloured flame-retardant polyamides |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3364250B2 (en) | 2003-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RVOP | Cancellation by post-grant opposition |