JPH0516179A - Injection-molded item - Google Patents
Injection-molded itemInfo
- Publication number
- JPH0516179A JPH0516179A JP3198881A JP19888191A JPH0516179A JP H0516179 A JPH0516179 A JP H0516179A JP 3198881 A JP3198881 A JP 3198881A JP 19888191 A JP19888191 A JP 19888191A JP H0516179 A JPH0516179 A JP H0516179A
- Authority
- JP
- Japan
- Prior art keywords
- escape
- molded product
- molding material
- mold
- main body
- 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
- 239000012778 molding material Substances 0.000 claims description 31
- 238000000465 moulding Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は射出成形品に関する。FIELD OF THE INVENTION This invention relates to injection molded articles.
【０００２】[0002]
【従来の技術】従来、射出成形品の不良現象としてのバ
リを防止する方法として以下のような方法が知られてい
る。2. Description of the Related Art Conventionally, the following method has been known as a method for preventing burr as a defective phenomenon of an injection molded product.
【０００３】ひとつは、射出圧力や射出速度を低くした
り、型温度を低くする等の成形条件でバリを防ぐ方法が
ある。One method is to prevent burrs under molding conditions such as lowering the injection pressure and the injection speed, and lowering the mold temperature.
【０００４】また、型の型割り部分の平面度，平行度お
よび表面粗さ等の精度を上げたり、エジェクタピンとエ
ジェクタピンが挿入される穴等の可動部のクリアランス
を小さくする、といった型の精度を上げる方法がある。Further, the precision of the mold is such that the precision of flatness, parallelism, surface roughness, etc., of the mold split portion of the mold is increased, and the clearance of the movable portion such as the ejector pin and the hole into which the ejector pin is inserted is reduced. There is a way to raise.
【０００５】さらに、例えば実開昭６２−２５５２０号
公報にはバリを防ぐ方法として次のような考案が提案さ
れている。図１３に示す如く、一方の金型８１にはキャ
ビティ８２，ゲート８３，ランナー８４およびスプルー
８５が形成されている。さらに、ゲート１３からキャビ
ティ８２内に充填した成形材料がキャビティ８２内を最
後に充填する位置、すなわちキャビティ８２内を挟んで
ゲート８３と反対側付近には逃がし流路用ゲート８６お
よび逃がし流路８７が連設されている。Further, for example, Japanese Utility Model Laid-Open No. 62-25520 proposes the following device as a method for preventing burr. As shown in FIG. 13, a cavity 82, a gate 83, a runner 84, and a sprue 85 are formed in one mold 81. Further, the escape passage gate 86 and the escape passage 87 are located at a position where the molding material filled in the cavity 82 from the gate 13 is filled in the cavity 82 at the end, that is, near the side opposite to the gate 83 with the inside of the cavity 82 interposed therebetween. Are lined up.
【０００６】これにより、キャビティ８２充填完了後に
充填圧力を増大させても、成形材料が前記逃がし流路８
７に適宜流入することによりショック圧を緩和してバリ
の発生を防止する。As a result, even if the filling pressure is increased after the cavity 82 is completely filled, the molding material is allowed to flow into the escape passage 8.
By appropriately flowing into 7, the shock pressure is relieved and burr formation is prevented.
【０００７】また、実開昭６２−２５５２０号公報に
は、図１４に示す如く、固定側金型９１と可動側金型９
２とで形成される成形用金型にキャビティ９３を形成
し、ランナー９４側のゲート９５と逃がし流路９６の逃
がし流路用ゲート９７とをサブマリンゲートとする方法
が提案されている。In Japanese Utility Model Laid-Open No. 62-25520, as shown in FIG. 14, a fixed mold 91 and a movable mold 9 are used.
A method has been proposed in which a cavity 93 is formed in the molding die formed by 2 and the gate 95 on the runner 94 side and the escape passage gate 97 of the escape passage 96 are submarine gates.
【０００８】[0008]
【発明が解決しようとする課題】しかるに、前記各従来
技術には以下のような欠点がある。However, the above-mentioned respective prior arts have the following drawbacks.
【０００９】すなわち、成形条件によりバリを防ぐ方法
では、得ようとする成形品の形状，外観，精度およびコ
スト等の要求品質により成形条件がある程度限定される
ため、成形条件のみでバリを防止することは困難であ
る。That is, in the method of preventing burrs by molding conditions, the molding conditions are limited to some extent by the required quality such as the shape, appearance, accuracy and cost of the molded product to be obtained. Is difficult.
【００１０】また、型の精度を上げる方法では、型のコ
ストおよび加工時間が増加する。そして、クリアランス
を小さくすると、型がかじる危険が大きくなる。In addition, the method of increasing the accuracy of the mold increases the cost and processing time of the mold. Then, if the clearance is reduced, the risk of the mold biting increases.
【００１１】さらに、前記実開昭６２−２５５２０号公
報の図１３に示す方法では、成形品には逃がし流路８７
内に充填された成形材料も同時に成形されるため、後加
工によりこの部分を削除する必要が生じる。Further, in the method shown in FIG. 13 of Japanese Utility Model Laid-Open No. 62-25520, the escape passage 87 is formed in the molded product.
Since the molding material filled inside is also molded at the same time, it is necessary to remove this portion by post-processing.
【００１２】また、上記考案の図１４に示す方法では、
上記考案の欠点は解消されるものの、連続成形（生産）
を行なうためには、逃がし流路９６部の成形品を型から
排出する手段と、その排出が確実に行なわれたか確認す
る手段とが必要となる。Further, in the method shown in FIG. 14 of the above invention,
Although the drawbacks of the above invention are solved, continuous molding (production)
In order to carry out the above, it is necessary to have a means for discharging the molded product in the escape passage 96 from the mold and a means for confirming whether the discharge is surely performed.
【００１３】因って、本発明は前記各従来技術における
欠点に鑑みて開発されたもので、成形品にバリが発生す
ることを防止するとともに、型の加工が容易で、かつ生
産性の良い射出成形品の提供を目的とする。Therefore, the present invention has been developed in view of the drawbacks of the above-mentioned respective prior arts, and it is possible to prevent burrs from being generated in a molded product, to easily process a mold, and to improve productivity. The purpose is to provide injection molded products.
【００１４】[0014]
【課題を解決するための手段】本発明は、成形品端部よ
り突出しない部分に、成形材料逃がし部と、成形材料の
流路を狭めた成形材料逃がし口とを設け、成形材料逃が
し部は成形材料逃がし口により前記成形品と接続してい
るものである。According to the present invention, a molding material escape portion and a molding material escape port having a narrowed flow path of the molding material are provided in a portion which does not project from the end portion of the molding product, and the molding material escape portion is It is connected to the above-mentioned molded product by a molding material escape port.
【００１５】[0015]
【作用】本発明では、溶解した成形材料をキャビティに
充填すると、逃がし口は成形材料の流路が狭められて成
形材料が流れにくいため、キャビティに成形材料がほぼ
充填し、キャビティ内の成形材料の圧力（内圧）が高く
なるとともに逃がし口を通り逃がし部へ成形材料が流れ
る。そのため、内圧が必要以上に高くなることを防止で
きる。In the present invention, when the molten molding material is filled in the cavity, since the flow path of the molding material is narrowed in the escape port and the molding material does not easily flow, the molding material is almost filled in the cavity and the molding material in the cavity is filled. As the pressure (internal pressure) increases, the molding material flows through the escape port to the escape portion. Therefore, it is possible to prevent the internal pressure from becoming higher than necessary.
【００１６】[0016]
【実施例１】図１〜図３は本実施例を示し、図１は成形
品の平面図、図２は図１のＡ−Ａ′線断面図、図３は型
の縦断面図である。Embodiment 1 FIGS. 1 to 3 show this embodiment, FIG. 1 is a plan view of a molded product, FIG. 2 is a sectional view taken along the line AA ′ of FIG. 1, and FIG. 3 is a longitudinal sectional view of a mold. ..
【００１７】１は成形品で、この成形品１の本体２には
逃がし部３および逃がし口４が形成されている。逃がし
部３は逃がし口４により成形品１の本体２と接続してい
る。逃がし口４の肉厚は成形品１の本体２の平均肉厚よ
りも肉が薄く、逃がし部３の肉厚は本体２の平均肉厚と
ほぼ同等に形成されている。成形品１の本体２に５で示
すのはピンゲート跡である。Reference numeral 1 denotes a molded product, and a main body 2 of the molded product 1 has a relief portion 3 and a relief port 4. The escape portion 3 is connected to the main body 2 of the molded article 1 by the escape port 4. The thickness of the escape port 4 is thinner than the average thickness of the main body 2 of the molded product 1, and the thickness of the escape portion 3 is formed to be substantially equal to the average thickness of the main body 2. Reference numeral 5 on the main body 2 of the molded product 1 is a pin gate mark.
【００１８】図３は成形品１を成形する型１１であり、
この型１１は可動側取付板１２，スペーサブロック１
３，可動側型板１４，固定側型板１５，ストリッパー板
１６，固定側取付板１７，突出し板下１８，突出し板上
１９，エジェクタピン２０，スプルランナー２１を形成
するスプルブッシュ２２およびロケートリング２３等か
ら構成される通常の射出成形の型構造と同様である。異
なる点は、キャビティ２４の成形品１の逃がし部３を形
成する部分には逃がし入子２５が固定側型板１５にボル
ト（図示省略）で固設されていることである。FIG. 3 shows a mold 11 for molding the molded product 1.
This mold 11 includes a movable side mounting plate 12, a spacer block 1
3, movable side mold plate 14, fixed side mold plate 15, stripper plate 16, fixed side mounting plate 17, lower protruding plate 18, upper protruding plate 19, ejector pin 20, sprue bush 22 forming a sprue runner 21, and locate ring. The mold structure is the same as that of a normal injection molding mold composed of 23 and the like. A different point is that a relief insert 25 is fixed to a fixed side mold plate 15 with a bolt (not shown) at a portion of the cavity 24 where the relief portion 3 of the molded product 1 is formed.
【００１９】射出成形機（図示省略）によって溶解した
成形材料をスプルランナー２１を通してキャビティ２４
に充填する。この時、逃がし口４はキャビティ２４の平
均肉厚よりも薄いため成形材料の流路が狭められて成形
材料が流れにくく、キャビティ２４に成形材料がほぼ充
填し、キャビティ２４内の成形材料の圧力（内圧）が高
くなるとともに逃がし口４を成形材料が流れる。そのた
め、内圧が必要以上に高くなることがなく、バリの発生
を防ぐことができる。なお、逃がし口４に成形材料が流
れ込む際に閉じ込められた空気は、逃がし入子２５と固
定側型板１５間の間隙およびストリッパー板１６と固定
側型板１５の間隙を通して、型の外に逃がすことができ
る。その後、エジェクタピン２０でキャビティ２４内の
成形品を突き出すことで、成形品１を得ることが出来
る。A molding material melted by an injection molding machine (not shown) is passed through a sprue runner 21 and a cavity 24.
To fill. At this time, since the escape port 4 is thinner than the average thickness of the cavity 24, the flow path of the molding material is narrowed so that the molding material does not easily flow, and the cavity 24 is almost filled with the molding material. As the (internal pressure) increases, the molding material flows through the escape port 4. Therefore, the internal pressure does not become higher than necessary, and the occurrence of burrs can be prevented. The air trapped when the molding material flows into the escape port 4 escapes to the outside of the mold through the gap between the escape insert 25 and the stationary mold plate 15 and the gap between the stripper plate 16 and the stationary mold plate 15. be able to. After that, the molded product 1 can be obtained by ejecting the molded product in the cavity 24 with the ejector pin 20.
【００２０】本実施例によれば、パーティングライン
（Ｐ．Ｌ）等のバリの発生を防ぐことができ、さらに逃
がし部３が成形品１の本体２と一体であるため、逃がし
部３を型から排出する機構・装置等を必要とせず、かつ
逃がし部３の肉厚は成形品１の本体２の平均肉厚とほぼ
同等であるため、後で逃がし部３を削除する必要もない
ため、生産性に優れる。According to this embodiment, it is possible to prevent the occurrence of burrs such as parting lines (PL) and the escape portion 3 is integrated with the main body 2 of the molded product 1, so that the escape portion 3 is removed. Since there is no need for a mechanism or device for discharging from the mold, and since the thickness of the relief portion 3 is almost the same as the average thickness of the main body 2 of the molded product 1, there is no need to remove the relief portion 3 later. , Excellent in productivity.
【００２１】尚、成形材料は必ずしも逃がし入子２５部
分まで充填させる必要はなく、例えば図４に示す様に、
逃がし部３がショートとなり、穴３ａがあいていても良
いし、逃がし部３がヒケていても良い。It should be noted that the molding material does not necessarily need to be filled up to the portion of the nest 25, and for example, as shown in FIG.
The relief portion 3 may be short-circuited and the hole 3a may be open, or the relief portion 3 may be sinked.
【００２２】また、図５および図６に示す様に、逃がし
部３および逃がし口４の形状は本実施例の形状に限定す
るものではなく、様々な形状の逃がし部３および逃がし
口４が考えられる。Further, as shown in FIGS. 5 and 6, the shapes of the escape portion 3 and the escape port 4 are not limited to the shapes of this embodiment, and the escape portion 3 and the escape port 4 of various shapes are considered. Be done.
【００２３】さらに、成形品１の本体２の肉厚が薄く、
逃がし口４の肉厚が極端に薄くなってしまう場合、図７
に示す様な形状も考えられる。Furthermore, the thickness of the main body 2 of the molded product 1 is thin,
If the wall thickness of the escape port 4 becomes extremely thin,
A shape as shown in is also conceivable.
【００２４】また、逃がし部３および逃がし口４は一ヶ
所である必要はなく、必要に応じ複数ヶ所設けてもよ
い。また、逃がし部３および逃がし口４の大きさは、成
形品の形状，大きさ，成形材料および成形条件等によっ
て適宜設定される。Further, the escape portion 3 and the escape port 4 do not have to be provided at one place, and may be provided at a plurality of places if necessary. The sizes of the escape portion 3 and the escape port 4 are appropriately set depending on the shape and size of the molded product, the molding material, the molding conditions, and the like.
【００２５】さらに、ゲートもピンゲートに限定するも
のではなく、サイドゲートやファンゲート等を用いても
良い。Further, the gate is not limited to the pin gate, and a side gate or a fan gate may be used.
【００２６】[0026]
【実施例２】図８は本実施例を示す斜視図である。Second Embodiment FIG. 8 is a perspective view showing this embodiment.
【００２７】３１は筒形状（カメラの鏡枠）の成形品
で、この成形品３１は３点ゲートで作られている。成形
品３１の外周はスライドによって形成され、逃がし部３
２および逃がし口３３も同時にスライドによって形成さ
れている。また、図８に示した以外（見えない部分）に
２ヶ所、計３ヶ所の逃がし部３２および逃がし口３３が
形成されている。３４はサブマリンゲート跡、３５はス
ライドの型割り部である。Reference numeral 31 is a cylindrical (camera lens frame) molded product, and this molded product 31 is made of a three-point gate. The outer periphery of the molded product 31 is formed by a slide, and the relief portion 3
2 and the escape port 33 are also formed by sliding at the same time. Further, in addition to the portion shown in FIG. 8 (invisible portion), two relief portions 32 and a relief opening 33 are formed at a total of three locations. Reference numeral 34 is a trace of the submarine gate, and 35 is a mold dividing portion of the slide.
【００２８】本実施例の作用は、前記実施例１の作用と
同様の作用であり、作用の説明を省略する。The operation of this embodiment is the same as the operation of the first embodiment, and the description of the operation is omitted.
【００２９】本実施例によれば、前記実施例１と同様
に、型割り部３５等に発生するバリを防ぐことができ、
かつ生産性に優れる。また、成形時に内圧が必要以上に
高くならず、成形材料の密度分布がほぼ一定となり、真
円度および円筒度等の精度が優れた成形品３１を得るこ
とができる。According to the present embodiment, as in the first embodiment, it is possible to prevent burrs from occurring in the mold splitting portion 35 and the like,
And excellent in productivity. Further, the internal pressure does not increase more than necessary during molding, the density distribution of the molding material becomes substantially constant, and a molded product 31 having excellent accuracy such as roundness and cylindricity can be obtained.
【００３０】尚、図９および図１０に示す様に、逃がし
部３２および逃がし口３３の形状は本実施例の形状に限
定するものではなく、様々な形状の逃がし部３２および
逃がし口３３が考えられる。As shown in FIGS. 9 and 10, the shapes of the escape portion 32 and the escape port 33 are not limited to the shapes of this embodiment, and the escape portion 32 and the escape port 33 of various shapes are considered. Be done.
【００３１】また、逃がし部３２および逃がし口３３の
大きさは、成形品の形状，大きさ，成形材料および成形
条件等によって適宜設定される。The sizes of the escape portion 32 and the escape port 33 are appropriately set depending on the shape and size of the molded product, the molding material, the molding conditions, and the like.
【００３２】さらに、ゲートもサブマリンゲートに限定
するものではなく、ピンゲート，サイドゲートおよびデ
ィスクゲート等を用いても良い。Further, the gate is not limited to the submarine gate, and a pin gate, a side gate, a disc gate or the like may be used.
【００３３】[0033]
【実施例３】図１１および図１２は本実施例を示し、図
１１は平面図、図１２は図１１の断面図である。Third Embodiment FIGS. 11 and 12 show the present embodiment, FIG. 11 is a plan view, and FIG. 12 is a sectional view of FIG.
【００３４】４１はレンズの成形品で、成形品４１のつ
ば４２部分には逃がし部４３および逃がし口４４が形成
されている。逃がし部４３の肉厚はつば４２とほぼ同等
の肉厚であり、逃がし口４４の肉厚はつば４２の肉厚よ
りも薄い肉厚である。４５はサイドゲート、４６はラン
ナーである。Reference numeral 41 denotes a lens molded product, and a relief portion 43 and a relief port 44 are formed in a collar 42 portion of the molded product 41. The thickness of the relief portion 43 is substantially the same as the thickness of the collar 42, and the thickness of the escape port 44 is smaller than the thickness of the collar 42. 45 is a side gate and 46 is a runner.
【００３５】本実施例の作用は、前記各実施例と同様の
作用であり、作用の説明を省略する。The operation of this embodiment is the same as that of each of the above-mentioned embodiments, and the description of the operation is omitted.
【００３６】本実施例によれば、前記各実施例と同様
に、バリの発生を防ぐことができ、かつ生産性に優れ
る。また、成形時に内圧が必要以上に高くならず、成形
材料の密度分布がほぼ一定となるため、面精度の優れた
レンズを得ることができる。According to this embodiment, it is possible to prevent burrs from occurring and to be excellent in productivity, as in the above-mentioned embodiments. In addition, the internal pressure does not increase more than necessary during molding, and the density distribution of the molding material becomes substantially constant, so that a lens with excellent surface accuracy can be obtained.
【００３７】尚、逃がし部４３および逃がし口４４は１
ヶ所に限定するものではなく、必要に応じて複数ヶ所設
けてもよい。The escape portion 43 and the escape port 44 are 1
The number is not limited to one, and a plurality of points may be provided if necessary.
【００３８】また、逃がし部４３および逃がし口４４の
大きさは、成形品の形状，大きさ，成形材料および成形
条件等によって適宜設定される。The sizes of the escape portion 43 and the escape port 44 are appropriately set depending on the shape and size of the molded product, the molding material, the molding conditions and the like.
【００３９】[0039]
【発明の効果】以上説明した様に、本発明に係る射出成
形品によれば、型の加工が容易で、かつ生産性のよい手
段で、成形品に発生するバリを防止できる。As described above, according to the injection-molded product of the present invention, it is possible to prevent burrs from being generated in the molded product by means of easy mold processing and high productivity.
【図１】実施例１を示す平面図である。FIG. 1 is a plan view showing a first embodiment.
【図２】図１のＡ−Ａ′線断面図である。FIG. 2 is a sectional view taken along the line AA ′ of FIG.
【図３】実施例１を示す型の縦断面図である。FIG. 3 is a vertical sectional view of a mold showing the first embodiment.
【図４】実施例１の変形例を示す平面図である。FIG. 4 is a plan view showing a modified example of the first embodiment.
【図５】実施例１の変形例を示す平面図である。FIG. 5 is a plan view showing a modified example of the first embodiment.
【図６】図５のＢ−Ｂ′線断面図である。6 is a sectional view taken along line BB ′ of FIG.
【図７】実施例１の変形例を示す平面図である。FIG. 7 is a plan view showing a modified example of the first embodiment.
【図８】実施例２を示す斜視図である。FIG. 8 is a perspective view showing a second embodiment.
【図９】実施例２の変形例を示す斜視図である。FIG. 9 is a perspective view showing a modified example of the second embodiment.
【図１０】実施例２の変形例を示す斜視図である。FIG. 10 is a perspective view showing a modified example of the second embodiment.
【図１１】実施例３を示す平面図である。FIG. 11 is a plan view showing a third embodiment.
【図１２】図１１の断面図である。12 is a cross-sectional view of FIG.
【図１３】従来例を示す平面図である。FIG. 13 is a plan view showing a conventional example.
【図１４】従来例を示す断面図である。FIG. 14 is a cross-sectional view showing a conventional example.
１ 成形品 ２ 本体 ３ 逃がし部 ４ 逃がし口 1 Molded product 2 Main body 3 Relief part 4 Relief port
Claims (1)
材料逃がし部と、成形材料の流路を狭めた成形材料逃が
し口とを設け、成形材料逃がし部は成形材料逃がし口に
より前記成形品と接続している事を特徴とする射出成形
品。Claim: What is claimed is: 1. A molding material escape portion and a molding material escape port having a narrowed flow path of the molding material are provided in a portion that does not project from the end portion of the molding product, and the molding material escape portion is formed by the molding material escape portion. An injection-molded product characterized by being connected to the above-mentioned molded product through an escape port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19888191A JP3179141B2 (en) | 1991-07-12 | 1991-07-12 | Injection molded article and method of molding this injection molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19888191A JP3179141B2 (en) | 1991-07-12 | 1991-07-12 | Injection molded article and method of molding this injection molded article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0516179A true JPH0516179A (en) | 1993-01-26 |
| JP3179141B2 JP3179141B2 (en) | 2001-06-25 |
Family
ID=16398481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19888191A Expired - Fee Related JP3179141B2 (en) | 1991-07-12 | 1991-07-12 | Injection molded article and method of molding this injection molded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3179141B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808167A (en) * | 1996-08-20 | 1998-09-15 | Solutia Inc. | Selective introduction of active sites for hydroxylation of benzene |
| US5874647A (en) * | 1996-08-20 | 1999-02-23 | Solutia Inc. | Benzene hydroxylation catalyst stability by acid treatment |
| US5874646A (en) * | 1996-08-07 | 1999-02-23 | Solutia Inc. | Preparation of phenol or phenol derivatives |
| US5892132A (en) * | 1996-08-08 | 1999-04-06 | Solutia Inc. | Transport hydroxylation reactor |
| US6255539B1 (en) | 1996-10-07 | 2001-07-03 | Solutia Inc. | Chemical composition and process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1597462B1 (en) | 2003-02-17 | 2007-07-18 | Nexxtdrive Limited | Automotive air blowers |
-
1991
- 1991-07-12 JP JP19888191A patent/JP3179141B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5874646A (en) * | 1996-08-07 | 1999-02-23 | Solutia Inc. | Preparation of phenol or phenol derivatives |
| US5892132A (en) * | 1996-08-08 | 1999-04-06 | Solutia Inc. | Transport hydroxylation reactor |
| US5808167A (en) * | 1996-08-20 | 1998-09-15 | Solutia Inc. | Selective introduction of active sites for hydroxylation of benzene |
| US5874647A (en) * | 1996-08-20 | 1999-02-23 | Solutia Inc. | Benzene hydroxylation catalyst stability by acid treatment |
| US5977008A (en) * | 1996-08-20 | 1999-11-02 | Solutia Inc. | Selective introduction of active sites for hydroxylation of benzene |
| US6255539B1 (en) | 1996-10-07 | 2001-07-03 | Solutia Inc. | Chemical composition and process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3179141B2 (en) | 2001-06-25 |
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