JPS5991125A - Production of spherical polyolefin resin particle - Google Patents
Production of spherical polyolefin resin particleInfo
- Publication number
- JPS5991125A JPS5991125A JP20172182A JP20172182A JPS5991125A JP S5991125 A JPS5991125 A JP S5991125A JP 20172182 A JP20172182 A JP 20172182A JP 20172182 A JP20172182 A JP 20172182A JP S5991125 A JPS5991125 A JP S5991125A
- Authority
- JP
- Japan
- Prior art keywords
- resin particles
- particles
- polyolefin resin
- resin
- temperature
- 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.)
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Links
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- Processes Of Treating Macromolecular Substances (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は球状ポリオレフィン樹脂粒子の本造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing spherical polyolefin resin particles.
従来よシ発泡成屋体は、ポリスチレン、架橋低密度ポリ
エチレン等を材質として例えば予備発泡粒子を用いるビ
ーズ成製法等によシ製造されている。一方９本出願人は
ポリ−レフイン樹脂９％にポリプロピレン系樹脂、直鎖
状低密度ポリエチレンが機械的強度、耐熱性、耐薬品惟
、耐油性等が優れていることから、その発泡成型体の開
発の研究を進めた結果、予備発泡粒子を得る方法および
その予備発泡粒子を用いて発泡成型体を得る方法の開発
に成功し、すでに提案している。Conventionally, foamed structures have been manufactured using polystyrene, crosslinked low-density polyethylene, or the like as a material, for example, by a bead manufacturing method using pre-expanded particles. On the other hand, the present applicant has found that 9% poly-refin resin, polypropylene resin, and linear low-density polyethylene have excellent mechanical strength, heat resistance, chemical resistance, oil resistance, etc. As a result of our development research, we succeeded in developing a method for obtaining pre-expanded particles and a method for obtaining foam molded articles using the pre-expanded particles, and we have already proposed these methods.
しかしながら、ポリスチレンが懸濁重合法によシ、ｔた
低密度ポリエチレンが架橋工程によりそれぞれ球状の粒
子を得ることができ、その樹脂粒子を用いて得られる予
備発泡粒子が球状となるのに対し、ポリプロピレン系樹
脂、直鎖状低密度ポリエチレンの場合には無架橋の樹脂
粒子を用いて予備発泡粒子が得られる反面、得られる予
備発泡粒子線均一な形状のものが得られ難く、その予備
発泡粒子は成製用金型に効率的に充填し難いため均一な
発泡成型体が得難かった。However, polystyrene can be obtained by suspension polymerization, and low-density polyethylene can be obtained by a crosslinking process to obtain spherical particles, and the pre-expanded particles obtained using these resin particles are spherical. In the case of polypropylene resins and linear low-density polyethylene, pre-expanded particles can be obtained using non-crosslinked resin particles, but on the other hand, it is difficult to obtain pre-expanded particles with a uniform shape, and the pre-expanded particles are difficult to obtain. Since it is difficult to efficiently fill a mold for molding, it is difficult to obtain a uniform foamed molded product.
、そこで本件特許出願人は、ポリプロピレン系樹脂粒子
を塩基、性炭酸マグネシウム、メルクまた状酸化フルミ
ニウムあるいはそれらの混合物からなる分散剤を用いて
分散眸に分散した後、樹脂粒子の融点＋１０℃以上の温
度に加熱することによって球状のポリプロピレン系樹脂
粒子が得られることを見出し、すでに提案している。Therefore, the applicant of the present patent dispersed polypropylene resin particles in a dispersion field using a dispersant consisting of a base, magnesium carbonate, Merck-like fulminium oxide, or a mixture thereof, and then We have already discovered and proposed that spherical polypropylene resin particles can be obtained by heating to a certain temperature.
本発明は上記従来技術をさらに改良した球状ポリオレフ
ィン樹脂粒子の製造方法を提供することを目的とするも
のである。An object of the present invention is to provide a method for producing spherical polyolefin resin particles that is a further improvement over the above-mentioned conventional technique.
すなわち２本発明はポリオレフィン樹脂粒子を。That is, the present invention uses polyolefin resin particles.
揮発性可塑剤を含有した状態で上記樹脂粒子間の融着防
止能を有する分散剤と共に分散媒に分散し。The resin containing a volatile plasticizer is dispersed in a dispersion medium together with a dispersant having the ability to prevent fusion between the resin particles.
上記樹脂粒子の融点−５℃以上融点＋１０’Ｃ未満の温
度に加熱することを特徴とする球状ポリオレフィン樹脂
粒子の製造方法を要旨とするものである。The gist of the present invention is a method for producing spherical polyolefin resin particles, which is characterized by heating the resin particles to a temperature of -5° C. or higher and lower than the melting point +10'C.
本発明において、ポリオレフィン樹脂粒子の材質として
は１例えばポリプロピレン単独重合体。In the present invention, the material of the polyolefin resin particles is, for example, polypropylene homopolymer.
エチレン−プロピレンランダム共重合体、エチレン−プ
ロピレンブロック共重合体等のポリプロピレン系樹脂、
エチレンとα−オレフィンとの共重合によシ得られる直
鎖状低密度ポリエチレン（以下ＬＬＤＰＥと称する）等
が例示される。またポリオレフィン樹脂粒子は押出機に
よシベレット化したもの、粉砕機にて粉砕したもの１重
合顆粒状粒子等種々の形状の粒子を用いることができ、
またその重量社６ｍｇ／ケ以下、％に５ ｍｇ ／ケ以
下が好ましい。Polypropylene resins such as ethylene-propylene random copolymers and ethylene-propylene block copolymers,
Examples include linear low density polyethylene (hereinafter referred to as LLDPE) obtained by copolymerization of ethylene and α-olefin. In addition, the polyolefin resin particles can be particles of various shapes such as those made into shivelets by an extruder, those crushed by a crusher, and monopolymerized granular particles.
Moreover, the weight is preferably 6 mg/piece or less, and the percentage is preferably 5 mg/piece or less.
本発明において用いられる揮発性可塑剤としては９例え
ばプロパン、ブタン、ペンタン、ヘキサン、ヘプタン等
で例示される脂肪族炭化水素類。Volatile plasticizers used in the present invention include aliphatic hydrocarbons such as propane, butane, pentane, hexane, heptane, and the like.
シクロブタン、シクロペンタン等で例示される環式脂肪
族炭化水素類、トリクロロフロロメタン。Cycloaliphatic hydrocarbons such as cyclobutane and cyclopentane, and trichlorofluoromethane.
ジクロロジフロロメタン、ジクロロテトラフロロエタン
、メチルクロライド、エチルクロライド。Dichlorodifluoromethane, dichlorotetrafluoroethane, methyl chloride, ethyl chloride.
メチレンクロライド等で例示されるハロゲン化炭化水素
類、イソブチンオリゴマー等の低重合オレフィン類等加
熱処理後に容易に揮発作用にょル除去され、高温時可塑
性を有するものが好ましい。Preferred are halogenated hydrocarbons such as methylene chloride, low polymerized olefins such as isobutyne oligomer, etc., which can be easily removed from volatilization after heat treatment and have plasticity at high temperatures.
この揮発性可塑剤の使用量は通常樹脂粒子１００重量部
に対し５〜５０重量部である。The amount of volatile plasticizer used is usually 5 to 50 parts by weight per 100 parts by weight of the resin particles.
揮発性可塑剤の量が５重量部未満の場合は可塑化効果が
充分に発揮されないおそれがある。また。If the amount of volatile plasticizer is less than 5 parts by weight, the plasticizing effect may not be sufficiently exhibited. Also.
５０重量部を超えても可塑化効果がさ＃１ど向上しない
為、これ以上使用することの積極的意味が認められない
。Even if it exceeds 50 parts by weight, the plasticizing effect does not improve any further, so there is no positive effect in using any more than this.
本発明において、樹脂粒子間の融着防止能を有する分散
剤は、適正使用量において樹脂粒子間の融着を防ぎ、か
つ分散媒中で攪拌するとき球形化を促進するものであ）
、その具体例としては酸化アルミニウム微粉末、酸化マ
グネシウム、カーボンブラック、酸化チタン粉末等の不
溶性態機微□粉末、界面活性剤等が挙げられる。上記界
面活性剤としては、陰イオン性界面活性剤、陽イオン性
界面活性剤１両性イオン界□面活性剤等いず□れも用い
ることができ、これらは混合して用いてもよい。In the present invention, the dispersant having the ability to prevent fusion between resin particles is one that prevents fusion between resin particles when used in an appropriate amount and promotes spheroidization when stirred in a dispersion medium.)
Specific examples include insoluble fine powders such as aluminum oxide fine powder, magnesium oxide, carbon black, and titanium oxide powder, and surfactants. As the above-mentioned surfactant, any of anionic surfactants, cationic surfactants, amphoteric ionic surfactants, etc. can be used, and these may be used in combination.
好ましい隘イオン性界面活゛性剤の具体例としては。Specific examples of preferred ionic surfactants include:
ステアリン酸カルシウム、ステアリン酸ナトリウム、ス
テアリン酸アルミニウム、′オレイン□酸ナトリウム、
オレイン酸カルシウム、パルミ゛チン酸カルシウム、牛
脂肪酸金属塩等の高級脂肪酸塩、アルキルベンゼンスル
ホン酸ソーダ等のアルキ；ヘンゼンスルホン酸塩、その
他アルキル硫酸エステル塩、アルキルナフタレンスルホ
ン酸塩尋が挙けられる。を友好ましい陽イオン性界面活
性剤の具体例として紘、アルキルアミン塩、第４級アン
モニウム塩等が挙げられ、好ましい両性イオン界面活性
剤の具体例としては、アルキルベタイン等が挙げられる
。上記の各種界面活性剤にはポリオキシエチレンアルキ
ルエーテル、ポリオキシエチレン脂肪酸エステル等の非
イオン性界面活性剤を併用してもよい。本発明で用いる
分散剤として特に好ｔ′シいものは酸化アルミニウムと
金属石けんとの混合物、゛および酸化アルミニウム粉末
と陽イオン性界面活性剤との混合物である。Calcium stearate, sodium stearate, aluminum stearate, sodium oleate,
Examples include higher fatty acid salts such as calcium oleate, calcium palmitate, and beef fatty acid metal salts, alkylbenzenesulfonate salts such as sodium alkylbenzenesulfonate, other alkyl sulfate ester salts, and alkylnaphthalene sulfonate salts. . Specific examples of preferred cationic surfactants include salts, alkylamine salts, quaternary ammonium salts, etc., and specific examples of preferred amphoteric surfactants include alkyl betaines. Nonionic surfactants such as polyoxyethylene alkyl ether and polyoxyethylene fatty acid ester may be used in combination with the above-mentioned various surfactants. Particularly preferred dispersants for use in the present invention are mixtures of aluminum oxide and metal soap, and mixtures of aluminum oxide powder and cationic surfactants.
分散剤の適正使用量は９分散剤の種類、ポリオレフィン
系樹脂の種類および凝集処理条件等によるで異なるので
実験的に確認することが必要であるが、概ねポリオレフ
ィン系樹脂粒子１００重量部に対し、０．０５〜５重量
部の範囲にある。The appropriate amount of dispersant to be used varies depending on the type of dispersant, type of polyolefin resin, agglomeration treatment conditions, etc., so it must be confirmed experimentally, but in general, for 100 parts by weight of polyolefin resin particles, It is in the range of 0.05 to 5 parts by weight.
また樹−粒子が分散される分散媒としては９例えば水、
エチレングリコール、グリセリン、メタノール、エタノ
ール等のうちの１種またはそれらの２種以上の混合物等
が挙げられるが通常は水が好ましい。分散媒の使用量は
通常樹脂粒子１００重量部に対し１００重量部以上であ
る。In addition, examples of the dispersion medium in which the tree particles are dispersed include water,
Examples include one of ethylene glycol, glycerin, methanol, ethanol, etc., or a mixture of two or more thereof, but water is usually preferred. The amount of the dispersion medium used is usually 100 parts by weight or more per 100 parts by weight of the resin particles.
本発明において、樹脂粒子は前記樹脂粒子の融点−５℃
以以上点＋１０℃未満の温度に加熱される。加熱温度が
融点−５℃未満の場合には球形化が困難であυ２２本発
明目的を達成することができない。また加熱温度が融点
＋１０℃以上の場合には粒子間の融着防止能が低下し、
またエネルギーの損失を招く。また加熱温度が所望の温
度に到達した後一定時間以上保持することが好ましい。In the present invention, the resin particles have a melting point of −5° C.
It is then heated to a temperature below +10°C. If the heating temperature is lower than the melting point -5°C, it will be difficult to form spheres and the object of the present invention cannot be achieved. Furthermore, when the heating temperature is higher than the melting point +10°C, the ability to prevent fusion between particles decreases,
It also causes energy loss. Further, it is preferable to maintain the heating temperature for a certain period of time or more after reaching the desired temperature.
このようにして球形化処理を行なった後は２分散媒と共
に低温域へ取り出すか、所定温度２通常１００℃以下の
温度にまで冷却した後系外へ取シ出して９球形化された
粒子を得る。After performing the spheroidization process in this way, the spherical particles are either taken out to a low temperature region together with the dispersion medium, or cooled to a predetermined temperature 2, usually below 100°C, and then taken out of the system. obtain.
本発明において、樹脂粒子の融点の測定は示差走査熱量
分析（ＤＳＣ）によって行なった。この測定法では、試
料セット後窒素雰囲気にて１０℃／分の速度で２００℃
まで昇温し、その後１０℃／分で５０℃まで降温し、再
度１０℃／分で昇温したときの融解ピークの頂点を融点
とし、ピークが複数の場合はその平均温度を融点とした
。In the present invention, the melting point of the resin particles was measured by differential scanning calorimetry (DSC). In this measurement method, after setting the sample, the sample was heated to 200°C at a rate of 10°C/min in a nitrogen atmosphere.
The melting point was defined as the apex of the melting peak when the temperature was raised to 50°C at a rate of 10°C/min, and the temperature was raised again at a rate of 10°C/min, and when there were multiple peaks, the average temperature was defined as the melting point.
本発明により得られる球状ポリオレフィン樹脂粒子は１
例えば当該樹脂の予備発泡粒子の製造に有効に用いるこ
とができる。この予備発泡粒子の製造方法は１例えば密
閉容器内に樹脂粒子、揮発性発泡剤１分散媒を入れ、攪
拌下漬定温度に昇温し、容器内の圧力を揮発性発泡剤の
蒸気圧以上または以下の圧力に保持しながら容器の一端
を開放し、樹脂粒子と分散媒とを同時に容器内よシ低圧
の雰囲気に放出することによシ行なわれる。このように
して得られる予備発泡粒子は粒子形状のバラツキが少な
く、また気泡径（気泡数）のバラツキも少ないものであ
る。The spherical polyolefin resin particles obtained by the present invention are 1
For example, it can be effectively used for producing pre-expanded particles of the resin. The method for producing pre-expanded particles is as follows: 1. For example, put resin particles, a volatile blowing agent, and 1 dispersion medium in a closed container, raise the temperature to a constant temperature while stirring, and raise the pressure inside the container to a value higher than the vapor pressure of the volatile blowing agent. Alternatively, this can be carried out by opening one end of the container while maintaining the pressure below, and simultaneously releasing the resin particles and dispersion medium from inside the container into a low-pressure atmosphere. The pre-expanded particles thus obtained have less variation in particle shape and also less variation in cell diameter (number of cells).
また上記のようにして得られた予備発泡粒子を用いて発
泡成型体を得ることができ、この予備発泡粒子の形状は
均一なので成型用金型に効率的に充填でき、また気泡径
のバラツキも少ないので均一な優れた物性を有する発泡
成型体を得ることができる。In addition, a foamed molded article can be obtained using the pre-expanded particles obtained as described above, and since the shape of the pre-expanded particles is uniform, it can be efficiently filled into a mold for molding, and variations in cell diameter can be avoided. Since the amount is small, a foamed molded article having uniform and excellent physical properties can be obtained.
以上説明したように１本発明の製造方法によれば比較的
低温で球状ポリオレフィン系樹脂粒子を得ることができ
、この球状樹脂粒子を例えば予備発泡粒子の製造に用い
た場合、形状、気泡径等が均−表予備発泡粒子を得るこ
とができ、さらにはこの予備発泡粒子を用いて得られる
発泡成型体は優れた物性を有するものである等の利点を
有するものである。As explained above, according to the production method of the present invention, spherical polyolefin resin particles can be obtained at relatively low temperatures, and when these spherical resin particles are used, for example, in the production of pre-expanded particles, the shape, cell diameter, etc. It has the advantage that uniform pre-expanded particles can be obtained, and the foamed molded article obtained using the pre-expanded particles has excellent physical properties.
実施例１〜７および比較例１〜４
５１のオートクレーブにポリオレフィン樹脂粒子１００
０Ｉｉ、第１表に示す揮発性発泡剤２分散剤および分散
媒としての水を入れ、攪拌下、１１５〜１７５℃の温度
に加熱して１時間保持した後。Examples 1 to 7 and Comparative Examples 1 to 4 100 polyolefin resin particles were placed in a 51 autoclave.
0Ii, after adding the volatile blowing agent 2 dispersant shown in Table 1 and water as a dispersion medium, heating to a temperature of 115 to 175°C with stirring and holding for 1 hour.
室温まで冷却し、オートクレーブ外へ取り出し丸。Cool to room temperature and remove from the autoclave.
得られた樹脂ｉ子の形状を観察した。岡１本実施例およ
び比較例で使用するポリオレフィン樹脂の融点線取下の
通シである。The shape of the obtained resin particles was observed. Oka 1 This is a diagram of the melting point line of the polyolefin resin used in Examples and Comparative Examples.
ポリプロピレン゛系樹脂 融点（’Ｃ）プロピ
レン単独重合体 １６５
エチレン−プロピレンランダム共重合体 １４５エ
チレン−プロピレンブロック共重合体 １６３エ
チレン−ブテン１共重合体 １２４また実施例２
および比較例２で得られた樹脂粒子をそれぞれ第１図お
よび第２図に示す。Polypropylene resin Melting point ('C) Propylene homopolymer 165 Ethylene-propylene random copolymer 145 Ethylene-propylene block copolymer 163 Ethylene-butene 1 copolymer 124 Also Example 2
The resin particles obtained in Comparative Example 2 are shown in FIG. 1 and FIG. 2, respectively.
（１１）
実施例８および比較例５
５１のオートクレーブに実施例２で得られた樹脂粒子ま
たは熱処理していない樹脂粒子１０００ｇ、ジクロロシ
フ０ロメタン２００ ｐ、塩基性炭酸マグネシウム１５
．９および水３０００．９を入れ。(11) Example 8 and Comparative Example 5 1000 g of the resin particles obtained in Example 2 or unheated resin particles, 200 p of dichlorosiflomethane, and 15 basic magnesium carbonate were placed in a 51 autoclave.
．． 9 and water 3000.9.
容器の一端を開放し、容器内の圧力を３５ゆ／−１温度
を１４５℃に保持しながら予備発泡を行なった。得られ
た予備発泡粒子の形状、気泡径、形状のバラツキを測定
し、またオートクレーブ中に残留する樹脂粒子の量を測
定した。結果を第２表に示す。One end of the container was opened, and prefoaming was carried out while maintaining the pressure inside the container at 35 Yu/-1 and the temperature at 145°C. The shape, cell diameter, and shape variations of the obtained pre-expanded particles were measured, and the amount of resin particles remaining in the autoclave was also measured. The results are shown in Table 2.
また得られた予備発泡粒子を成型用金型に充填し、加熱
２発泡させて発泡成型体を得た。成製時の成型性を調べ
た。結果を第２表に併せて示す。Further, the obtained pre-expanded particles were filled into a mold for molding, and heated and foamed twice to obtain a foamed molded product. The moldability during production was investigated. The results are also shown in Table 2.
同、実施例８で得られた予備発泡粒子を第３図に並びに
比較例５で得られた予備発泡粒子をそれぞれ第４図に示
す。Similarly, the pre-expanded particles obtained in Example 8 are shown in FIG. 3, and the pre-expanded particles obtained in Comparative Example 5 are shown in FIG. 4.
第２表 ※ｌ−気泡径の一７２ツキは下記の如く判定した。Table 2 *L-Bubble diameter difference was determined as follows.
粒子間および粒子内のバラツキなし Ｏ粒子間また
は粒子内のいずれかバラツキ有ル △粒子間および
粒子内いずれもバラツキ有シ ×※２−樹脂粒子
のオートクレーブ内残留状態社下記の如く判定した。No variation between particles or within particles 0 Variations between particles or within particles △ Variations both between particles and within particles
残留樹脂粒子が全樹脂粒子の３チ未満 ○ｌ
３％以上１０％未満 Δ１
１０チ以上 ×
※３−粒子形状のバラツキは、同条件にて１０回予備発
泡したときの各ロット間のバラツキによシ下記の如く判
定した。Residual resin particles are less than 3 inches of total resin particles ○l
3% or more but less than 10% Δ1
10 or more x *3 - The variation in particle shape was determined as follows based on the variation between lots when pre-foaming was performed 10 times under the same conditions.
８回以上同じもの Ｏ ６〜７回同じもの △ ５回以下同じもの × ※４−成型性は下記の如く判定した。Same thing 8 or more times O Same thing 6-7 times △ Same thing 5 times or less × *4-Moldability was determined as follows.
２、８ ｋｇ ／ Ｊ （Ｇ）以下の水蒸気にて融着す
るもの ０３、 ｓ ｋｙ ／
ａｄ （Ｇ）以上の水蒸気でないと融着しないもの有り
×※５−成型性は１０回成型したとき
の優良品の個数によシ判定した。Items that fuse with water vapor of 2.8 kg/J (G) or less 03, sky/
Some products do not fuse unless the water vapor is ad (G) or higher. ×*5-Moldability was determined based on the number of good products when molded 10 times.
９個以上 ０ ８個以下 ×9 or more 0 8 or less ×
第１図は本発明によシ得られた樹脂粒子を示す斜視図、
第２図は本発明以外の方法によシ得られた樹脂粒子を示
す斜視図、第３図は本発明により得られた樹脂粒子を用
いて製造された予備発泡粒子を示す斜視図、第４図線本
発明以外の方法゛によシ得られた樹脂粒子を用いて製造
された予備発泡粒子を示す斜視図である。
（１４）
第１図FIG. 1 is a perspective view showing resin particles obtained according to the present invention;
FIG. 2 is a perspective view showing resin particles obtained by a method other than the present invention, FIG. 3 is a perspective view showing pre-expanded particles produced using resin particles obtained by the present invention, and FIG. FIG. 2 is a perspective view showing pre-expanded particles manufactured using resin particles obtained by a method other than the present invention. (14) Figure 1
Claims (1)
態で、上記樹脂粒子間の融着防止能を有する分散剤と共
に分散媒に分散し、上記樹脂粒子の融、！−５℃以上融
点＋１０℃未満の温度に加熱することを性徴とする球状
ポリオレフィン樹脂粒子の製造方法。Polyolefin resin particles containing a volatile plasticizer are dispersed in a dispersion medium along with a dispersant having the ability to prevent fusion between the resin particles, and the resin particles are melted! A method for producing spherical polyolefin resin particles whose characteristic is heating to a temperature of -5°C or higher and melting point +10°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20172182A JPS5991125A (en) | 1982-11-17 | 1982-11-17 | Production of spherical polyolefin resin particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20172182A JPS5991125A (en) | 1982-11-17 | 1982-11-17 | Production of spherical polyolefin resin particle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5991125A true JPS5991125A (en) | 1984-05-25 |
| JPH0259171B2 JPH0259171B2 (en) | 1990-12-11 |
Family
ID=16445825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20172182A Granted JPS5991125A (en) | 1982-11-17 | 1982-11-17 | Production of spherical polyolefin resin particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5991125A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60188435A (en) * | 1984-03-09 | 1985-09-25 | Badische Yuka Co Ltd | Production of polyolefin resin foam particle |
| JP2003507513A (en) * | 1999-08-17 | 2003-02-25 | ザ ダウ ケミカル カンパニー | Free-flowing polymer composition |
| JP2009256477A (en) * | 2008-04-17 | 2009-11-05 | Kaneka Corp | Polypropylene resin expanded particle |
| WO2018211626A1 (en) * | 2017-05-17 | 2018-11-22 | 株式会社アドマテックス | Composite particle material, and production method therefor |
-
1982
- 1982-11-17 JP JP20172182A patent/JPS5991125A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60188435A (en) * | 1984-03-09 | 1985-09-25 | Badische Yuka Co Ltd | Production of polyolefin resin foam particle |
| JPH0547579B2 (en) * | 1984-03-09 | 1993-07-19 | Mitsubishi Yuka Badische | |
| JP2003507513A (en) * | 1999-08-17 | 2003-02-25 | ザ ダウ ケミカル カンパニー | Free-flowing polymer composition |
| EP3006487A1 (en) | 1999-08-17 | 2016-04-13 | Dow Global Technologies LLC | Free flowing polymer composition |
| JP2009256477A (en) * | 2008-04-17 | 2009-11-05 | Kaneka Corp | Polypropylene resin expanded particle |
| WO2018211626A1 (en) * | 2017-05-17 | 2018-11-22 | 株式会社アドマテックス | Composite particle material, and production method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0259171B2 (en) | 1990-12-11 |
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