JPH02219842A - Powdery saponified ethylene/vinyl acetate copolymer composition - Google Patents
Powdery saponified ethylene/vinyl acetate copolymer compositionInfo
- Publication number
- JPH02219842A JPH02219842A JP3943289A JP3943289A JPH02219842A JP H02219842 A JPH02219842 A JP H02219842A JP 3943289 A JP3943289 A JP 3943289A JP 3943289 A JP3943289 A JP 3943289A JP H02219842 A JPH02219842 A JP H02219842A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl acetate
- acetate copolymer
- saponified
- saponified ethylene
- powder
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title abstract description 7
- 239000005977 Ethylene Substances 0.000 title abstract description 7
- 229920001577 copolymer Polymers 0.000 title abstract 6
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000002798 polar solvent Substances 0.000 claims abstract description 9
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 17
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 17
- 238000007127 saponification reaction Methods 0.000 abstract description 10
- 239000002904 solvent Substances 0.000 abstract description 7
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 238000005108 dry cleaning Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- ORAWFNKFUWGRJG-UHFFFAOYSA-N Docosanamide Chemical compound CCCCCCCCCCCCCCCCCCCCCC(N)=O ORAWFNKFUWGRJG-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- SWSBIGKFUOXRNJ-CVBJKYQLSA-N ethene;(z)-octadec-9-enamide Chemical compound C=C.CCCCCCCC\C=C/CCCCCCCC(N)=O.CCCCCCCC\C=C/CCCCCCCC(N)=O SWSBIGKFUOXRNJ-CVBJKYQLSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、粉末ケン化エチレン−酢酸ビニル共１合体組
成物に関するものである。更に詳しくは、帯電性が少な
く、なおかつ流動性に優れた粉末ケン化エチレン−酢酸
ビニル共重合体組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a powder saponified ethylene-vinyl acetate comonomer composition. More specifically, the present invention relates to a powder saponified ethylene-vinyl acetate copolymer composition that has low chargeability and excellent fluidity.
［従来の技術及び発明が解決しようとする課ＷＪ］エチ
レンー酢酸ビニル共重合体（以下ＥＶＡと略す）の部分
ケン化物（以下ケン化物と略す）は、繊維、プラスチッ
ク、金属等各種の被着体に対し優れた接着性を有してい
る事から熱接着性樹脂として幅広く使用されている。繊
維用接着剤として使用する場合、繊維の風合いを損わな
いようにするために一般的には、接着剤を粉末状にして
使用する場合が多い。また金属コーティング用として使
用する場合、−船釣には粉体塗装法によりコーティング
するが、この場合もケン化物は粉末状で使用される。し
かしながら、ケン化物の粉末は、粉末の粒度分布、粒子
形状、粉末同志の摩擦による帯電等により加工特性は大
きく異なり、加工時のトラブルの原因となり得る。すな
わち粉末ケン化物をフィーダーより繊維上に散布する際
に上記の問題を有していると散布量にむらができ、接着
不良となる。また目的の粒度の粉末を得るために粉砕し
た粉末を分級するという工程が一般的にとられるが、上
記の問題を有していると分級効率が低下するという間開
点もでてくる。この中で、流動性は、粉砕方法の変更等
により粒度分布、粒子形状を改良することにより解決で
きるが、帯電性、流動性の何れも接着性を損うこと無く
改良する方法に関しては、必ずしも有効な方法が無かっ
た。[Conventional technology and issues to be solved by the invention WJ] Partially saponified products (hereinafter referred to as saponified products) of ethylene-vinyl acetate copolymer (hereinafter referred to as EVA) can be used for various adherends such as fibers, plastics, and metals. It is widely used as a thermoadhesive resin due to its excellent adhesive properties. When used as an adhesive for textiles, the adhesive is generally used in powder form in order to avoid damaging the texture of the textiles. When used as a metal coating, - Boat fishing is coated by a powder coating method, and in this case too, the saponified product is used in powder form. However, the processing characteristics of saponified powders vary greatly depending on the particle size distribution, particle shape, electrification caused by friction between the powders, etc., which can cause problems during processing. In other words, if the above-mentioned problem occurs when the saponified powder is sprayed onto the fibers from the feeder, the amount of spraying will be uneven, resulting in poor adhesion. Furthermore, in order to obtain powder with the desired particle size, a step of classifying the pulverized powder is generally taken, but if the above-mentioned problems exist, the classification efficiency will decrease and open points will also occur. Among these, fluidity can be solved by improving particle size distribution and particle shape by changing the grinding method, etc., but there is no way to improve both chargeability and fluidity without impairing adhesion. There was no effective method.
〔課題を解決するための手段１
本発明者らは、かかる聞届点を解決するため鋭意検討を
加えた結果、粉末ケン化物１００重量部に対し極性溶剤
０．０５−１ｆｆｉ量部、流動性改良剤０．０１−ｉ重
量部を添加した組成物が帯電性しにくり、尚かつ流動性
に優れている事を見出し本発明に到達した。[Means for Solving the Problems 1] As a result of intensive studies to solve this problem, the inventors found that 0.05-1ffi parts of polar solvent and fluidity The present invention was achieved by discovering that a composition to which 0.01-i part by weight of a modifier was added was less likely to be charged and had excellent fluidity.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
本発明に用いられるケン化物とは、酢酸ビニル含量は５
−５０重量％、更に好ましくは２〇−４５重量％、メル
トフローレート（以下ＭＦＲと略す）１０−１０００ｇ
／１０ｒｎｉｎのＥＶＡを４０−９５％、更に好ましく
は６５−９０％ケン化したものが好まし、い。酢酸ビニ
ル含量が５重量％未満では接着性が十分で無いため好ま
しくない。The saponified product used in the present invention has a vinyl acetate content of 5
-50% by weight, more preferably 20-45% by weight, melt flow rate (hereinafter abbreviated as MFR) 10-1000g
/10rnin EVA is preferably saponified by 40-95%, more preferably 65-90%. If the vinyl acetate content is less than 5% by weight, the adhesion will not be sufficient, which is not preferable.
また５０重量％を越えると、ケン化度が低い場合は耐溶
剤性が十分で無いためドライクリーニングにより接着性
が大幅に低下傾向にあり好ましくない。反対にケン化度
が高い場合、その融点が高（なり、低温での接着性が十
分でないため好ましくない。また該ケン化物のケン化度
が４０％未満では、耐溶剤性が十分で無いためドライク
リーニングにより接着性が大幅に低下する傾向にあり好
ましくない。ケン化度が９５９６を越えると接着性が低
下するため好ましくない。Moreover, if it exceeds 50% by weight, the adhesiveness tends to be significantly lowered by dry cleaning due to insufficient solvent resistance if the degree of saponification is low, which is not preferable. On the other hand, if the degree of saponification is high, the melting point will be high and the adhesion at low temperatures will not be sufficient, which is undesirable. If the degree of saponification of the saponified product is less than 40%, the solvent resistance will not be sufficient. Dry cleaning tends to significantly reduce adhesion, which is undesirable. If the degree of saponification exceeds 9596, adhesion decreases, which is undesirable.
該ケン化物の原料であるＥＶＡは通常の高圧法ポリエチ
レンプラントによりエチレンと酢酸ビニルを共重合して
得られる物が使用できる。またケン化方法はＥＶＡのベ
レットあるいは粉末をメタノールのような低級アルコー
ル中でアルカリ触媒を用いてケン化する方法、トルエン
、キシレン、ヘキサンのようなＥＶＡを溶解する溶剤を
用いて予めＥＶＡを溶解した後、少量のアルコールとア
ルカリ触媒を用いてケン化する方法が上げられる。EVA, which is a raw material for the saponified product, can be obtained by copolymerizing ethylene and vinyl acetate in a conventional high-pressure polyethylene plant. The saponification method is to saponify EVA pellets or powder in a lower alcohol such as methanol using an alkali catalyst, or to dissolve EVA in advance using a solvent that dissolves EVA such as toluene, xylene, or hexane. After that, there is a method of saponification using a small amount of alcohol and an alkali catalyst.
この白粉末ＥＶＡのケン化あるいはＥ Ｖ Ａを予め溶
解した後ケン化する方法は、粉末としてケン化物を得る
ことができる。This method of saponifying white powder EVA or dissolving EVA in advance and then saponifying it can yield a saponified product in the form of powder.
ケン化物の粉末を得る方法として上記に記した方法以外
に常温機械粉砕、冷凍機械粉砕、化学粉砕等があげられ
る。いずれの粉砕方法を用いても本発明の効果を発揮す
ることはできるが化学粉砕によって得られた粉末を用い
ると本発明の効果を著しく発揮できる。本発明でいう所
の粉末とは、一般の粉末成形機で使用できうる範囲の粒
子形状をもったものをいうが、通常は３０メツシユ以下
のものを指す。In addition to the methods described above, examples of methods for obtaining saponified powder include room-temperature mechanical pulverization, frozen mechanical pulverization, chemical pulverization, and the like. Although the effects of the present invention can be achieved using any of the pulverization methods, the effects of the present invention can be significantly achieved by using powder obtained by chemical pulverization. The term "powder" as used in the present invention refers to a powder having a particle shape within a range that can be used in a general powder molding machine, but usually refers to a powder having a particle size of 30 mesh or less.
本発明に使用される極性溶剤は特に制限はないが、ケン
化物を溶解させるようなもの、あるいは著しい膨潤のた
め粒子形状を大幅に変形させるような溶剤または粉末ケ
ン化物の接着性を著しく阻害するような物か好ましくな
い。極性溶剤としては、水、メタノール、エタノール、
イソプロピルアルコール、エチレングリコール、グリセ
リン等があげられ単独あるいはこれらの混合物として使
用できる。この中で水を使用するのが経済性、安全性か
らみて最も好ましい。極性溶剤の添加量は粉末ケン化物
１００部に対しｏ、ｏｓ−ｉ部、更に好ましくは０．１
−０．５部が好ましい。添加量が０．０５部未満では帯
電防止の効果が少ないため好ましくない。また１部を越
えると流動性が低下するため好ましくない。The polar solvent used in the present invention is not particularly limited, but it is a solvent that dissolves the saponified product, or a solvent that significantly deforms the particle shape due to significant swelling, or a solvent that significantly inhibits the adhesion of the saponified powder. I don't like that kind of thing. Polar solvents include water, methanol, ethanol,
Isopropyl alcohol, ethylene glycol, glycerin and the like can be used alone or as a mixture thereof. Among these, it is most preferable to use water in terms of economy and safety. The amount of polar solvent added is o, os-i parts, more preferably 0.1 parts per 100 parts of saponified powder.
-0.5 part is preferred. If the amount added is less than 0.05 part, the antistatic effect will be low, which is not preferable. Moreover, if it exceeds 1 part, the fluidity decreases, which is not preferable.
本発明に使用される流動性改良剤は特に制限はないが、
粉末ケン化物の特性、特に接着性を著しく阻害するよう
なものは好ましくない。流動性改良剤としては微粉末の
炭酸カルシウム、炭酸ナトリウム、シリカ、タルク、ア
ルミナ等の無機充填剤、エチレンビスステアリン酸アミ
ド、エチレンビスオレイン酸アミド、ステアリン酸アミ
ド、ベヘン酸アミド、オレイン酸アミド、エルカ酸アミ
ド等の脂肪酸アミド、ステアリン酸亜鉛、安息香酸ナト
リウム等の脂肪酸金属塩があげられ、単独あるいは混合
物として使用できる。流動性改良剤の添加口は粉末ケン
化物１００部に対し０．０１−１部、更に好ましくは０
．０３−０゜８部が好ましい。添加量が０．０１部未満
では流動性改良の効果が少ないため好ましくない。また
１部添加すれば流動性改良の効果は十分でありそれ以上
添加する必要はない。また流動性改良剤は１部以上添加
すると接着性が低下することがあるため好ましくない。The fluidity improver used in the present invention is not particularly limited, but
It is not preferable to use a material that significantly impedes the properties of the saponified powder, especially the adhesive properties. Fluidity improvers include finely powdered calcium carbonate, sodium carbonate, silica, talc, inorganic fillers such as alumina, ethylene bisstearamide, ethylene bisoleic acid amide, stearic acid amide, behenic acid amide, oleic acid amide, Examples include fatty acid amides such as erucic acid amide, and fatty acid metal salts such as zinc stearate and sodium benzoate, which can be used alone or as a mixture. The addition port of the fluidity improver is 0.01 to 1 part, more preferably 0.01 to 1 part per 100 parts of the saponified powder.
．． 03-0°8 parts is preferred. If the amount added is less than 0.01 part, it is not preferable because the effect of improving fluidity is small. Further, if one part is added, the effect of improving fluidity is sufficient, and there is no need to add more. Further, it is not preferable to add one part or more of the fluidity improver since the adhesion may deteriorate.
粉末ケン化物と極性溶剤及び流動性改良剤との混合方法
は、ブレンダーを用いたトライブレンド方式が好ましい
。A preferred method for mixing the saponified powder with the polar solvent and fluidity improver is a tri-blend method using a blender.
【発明の効果１
本発明によれば、ケン化ＥＶＡの特性の一つである接着
性を損うこと無く帯電防止性能、流動性等の良好な粉末
を得ることができ、粉末を分級する際の分級効率の向上
、繊維に散布する際の散布量の均一性を高めることがで
き、生産性、及び加工上からも本発明は極めて有益とい
える。Effect of the invention 1 According to the present invention, powder with good antistatic performance and fluidity can be obtained without impairing adhesiveness, which is one of the characteristics of saponified EVA, and when classifying the powder, The present invention can be said to be extremely beneficial from the viewpoint of productivity and processing, as it can improve the classification efficiency of fibers and improve the uniformity of the amount of spraying on fibers.
［実施例］
次に本発明を実施例をもって更に詳細に説明するが、本
発明はこれらに限定されるものではない。[Example] Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.
実施例１
酢酸ビニル含量２８重量％、ＭＦＲ１５０ｇ／１０ｒｎ
ｉｎのＥＶＡのベレットをメタノール中で苛性ソーダを
触媒としてケン化反応を行いケン化度８０％ケン化物前
た。このケン化物を化学粉砕法により粉砕することによ
り、粉末ケン化物を得た。この粉末１００部に対し水０
．２部、αアルミナ０．０５部を添加し十分１と混合し
た。次に１００メツシユの金網で分級し、１００メツシ
ュ通過品について、流動性、帯電性の評価を行なうた。Example 1 Vinyl acetate content 28% by weight, MFR 150g/10rn
A pellet of EVA was saponified in methanol using caustic soda as a catalyst to obtain a saponified product with a degree of saponification of 80%. This saponified product was pulverized by a chemical pulverization method to obtain a powdered saponified product. 0 parts of water per 100 parts of this powder
．． 2 parts and 0.05 part of α-alumina were added and mixed with 1/1 part. Next, the mixture was classified using a 100-mesh wire mesh, and the fluidity and chargeability of the products that passed through the 100-mesh mesh were evaluated.
流動性はかさ比重及び安息角を７１？１定することによ
って判断した。また帯電性は１００メツシユの金網の通
過率を測定することにより判断した。Flowability was determined by determining bulk specific gravity and angle of repose at 71?1. The charging property was determined by measuring the rate of passage through a 100-mesh wire mesh.
更に接着性は綿ブロードとの接着強度を測定することに
よって判断した。綿ブロードとの接着は、温度１５０℃
、時間１０秒、圧力０．３ｋｇ／ｃ−という条件で行っ
た。結果を第２表に示した。Furthermore, adhesion was determined by measuring the adhesive strength with cotton broadcloth. Adhesion with cotton broadcloth at a temperature of 150℃
, time was 10 seconds, and pressure was 0.3 kg/c-. The results are shown in Table 2.
実施例２−５及び比較例１−３
粉末ケン化ＥＶＡ、極性溶剤、流動性改良剤を第１表に
示したものとする以外は実施例−１と同様に添加したも
のについて流動性、帯電性、接着性を測定した。結果を
第２表に示した。Example 2-5 and Comparative Example 1-3 The fluidity and charging of the products added in the same manner as in Example-1 except that the powdered saponified EVA, polar solvent, and fluidity improver were as shown in Table 1. The properties and adhesion were measured. The results are shown in Table 2.
Claims (1)
ビニル共重合体を４０−９５％ケン化したケン化エチレ
ン−酢酸ビニル共重合体粉末１００重量部に対し、極性
溶剤０．０５−１重量部、流動性改良剤０．０１−１重
量部を添加してなる粉末ケン化エチレン−酢酸ビニル共
重合体組成物。(1) 0.05-1 parts by weight of a polar solvent per 100 parts by weight of saponified ethylene-vinyl acetate copolymer powder obtained by saponifying 40-95% ethylene-vinyl acetate copolymer with a vinyl acetate content of 5-50% by weight. A powder saponified ethylene-vinyl acetate copolymer composition containing 0.01-1 parts by weight of a fluidity improver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1039432A JP2775811B2 (en) | 1989-02-21 | 1989-02-21 | Powdered saponified ethylene-vinyl acetate copolymer composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1039432A JP2775811B2 (en) | 1989-02-21 | 1989-02-21 | Powdered saponified ethylene-vinyl acetate copolymer composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02219842A true JPH02219842A (en) | 1990-09-03 |
| JP2775811B2 JP2775811B2 (en) | 1998-07-16 |
Family
ID=12552838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1039432A Expired - Fee Related JP2775811B2 (en) | 1989-02-21 | 1989-02-21 | Powdered saponified ethylene-vinyl acetate copolymer composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775811B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003176395A (en) * | 2001-09-03 | 2003-06-24 | Kuraray Co Ltd | Ethylene-vinyl alcohol copolymer composition and powder coating using the same |
| JP4527818B2 (en) * | 1999-03-16 | 2010-08-18 | 日本合成化学工業株式会社 | Saponified pellet of ethylene-vinyl acetate copolymer |
| JP2015513217A (en) * | 2012-02-24 | 2015-04-30 | エルジー・ハウシス・リミテッドＬｇ Ｈａｕｓｙｓ，Ｌｔｄ． | EVA sheet for solar cell containing fine particles and method for producing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61283644A (en) * | 1985-06-10 | 1986-12-13 | Kuraray Co Ltd | Ethylene/vinyl alcohol copolymer composition and heat-oriented structure obtained by using same |
-
1989
- 1989-02-21 JP JP1039432A patent/JP2775811B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61283644A (en) * | 1985-06-10 | 1986-12-13 | Kuraray Co Ltd | Ethylene/vinyl alcohol copolymer composition and heat-oriented structure obtained by using same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4527818B2 (en) * | 1999-03-16 | 2010-08-18 | 日本合成化学工業株式会社 | Saponified pellet of ethylene-vinyl acetate copolymer |
| JP2003176395A (en) * | 2001-09-03 | 2003-06-24 | Kuraray Co Ltd | Ethylene-vinyl alcohol copolymer composition and powder coating using the same |
| JP2015513217A (en) * | 2012-02-24 | 2015-04-30 | エルジー・ハウシス・リミテッドＬｇ Ｈａｕｓｙｓ，Ｌｔｄ． | EVA sheet for solar cell containing fine particles and method for producing the same |
| US9741891B2 (en) | 2012-02-24 | 2017-08-22 | Lg Hausys, Ltd. | Eva sheet comprising microparticles for solar cell and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2775811B2 (en) | 1998-07-16 |
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