JPH11255959A - Cellulose acetate-based resin composition and its production - Google Patents
Cellulose acetate-based resin composition and its productionInfo
- Publication number
- JPH11255959A JPH11255959A JP7318598A JP7318598A JPH11255959A JP H11255959 A JPH11255959 A JP H11255959A JP 7318598 A JP7318598 A JP 7318598A JP 7318598 A JP7318598 A JP 7318598A JP H11255959 A JPH11255959 A JP H11255959A
- Authority
- JP
- Japan
- Prior art keywords
- cellulose acetate
- weight
- molecular weight
- resin composition
- plasticizer
- 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]
【発明の属する技術分野】本発明は、ガラス転移温度が
２００℃以上である直径０．１μｍ以上の領域が組成物
中に、１ｇ当り１０個以下であるセルロースアセテート
系樹脂組成物及びその製造法に関する。The present invention relates to a cellulose acetate resin composition having a glass transition temperature of 200 ° C. or more and a diameter of 0.1 μm or more in a composition of 10 or less per gram and a method for producing the same. About.
【０００２】[0002]
【従来の技術】一般にセルロースアセテートは、原料セ
ルロースにリンター、パルプ等の天然物を用い、先ず適
量の酢酸を用いて前処理を行ない、続いて通常触媒とし
て硫酸を用いて無水酢酸、氷酢酸とともに酢酸エステル
化し、セルローストリアセテートを作る。そして、完全
に酢酸エステル化したセルロースアセテートからアセチ
ル基を均一に脱離させて様々な置換度のセルロースアセ
テートを得る。この熟成を終えた酢化浴に多量の水を加
え、生成した酢酸セルロースを沈殿させる。さらに、沈
殿後水で数回洗浄を行ない、付着酸分を十分除去して乾
燥させる。このようにして、セルロースアセテートフレ
ークが得られる。このフレークは、通常粉砕して製品と
なるが、その粉体の粒径はかなり大きく、ばらついてい
る。この粉体に通常可塑剤を添加してセルロースアセテ
ート系樹脂組成物が得られるが、従来までは低分子量で
相溶性の良い可塑剤を用いており、良好な樹脂組成物、
即ち透明で可塑剤が均一に分散した樹脂組成物が得られ
ていた。2. Description of the Related Art In general, cellulose acetate is prepared by using natural materials such as linter and pulp as raw material cellulose, first pretreating with an appropriate amount of acetic acid, and then using sulfuric acid as a catalyst together with acetic anhydride and glacial acetic acid. Acetic acid esterification to make cellulose triacetate. Then, acetyl groups are uniformly eliminated from the completely acetate-esterified cellulose acetate to obtain cellulose acetate having various degrees of substitution. A large amount of water is added to the matured acetylation bath to precipitate the produced cellulose acetate. Further, the precipitate is washed several times with water to sufficiently remove the adhering acid component and dried. Thus, a cellulose acetate flake is obtained. The flakes are usually pulverized into a product, but the particle size of the powder is quite large and varies. Usually, a plasticizer is added to this powder to obtain a cellulose acetate-based resin composition.However, a plasticizer having a low molecular weight and good compatibility has been used so far, and a good resin composition,
That is, a transparent resin composition in which the plasticizer was uniformly dispersed was obtained.
【０００３】[0003]
【発明が解決しようとする課題】従来までの低分子量で
相溶性の良い可塑剤を用いた場合、セルロースアセテー
ト系樹脂組成物の成形時あるいは成形後に可塑剤が蒸発
し抜け易いため、成形時の作業環境の悪化や成形物の寸
法安定性に悪影響を及ぼす。そこで、最近これらの問題
を解決するため高分子量可塑剤が使われ始めている。し
かし、通常の方法でセルロースアセテート樹脂と可塑剤
とを熱可塑化してセルロースアセテート系樹脂組成物を
作り、さらにフィルム、繊維等に成形した場合には、高
分子量可塑剤を使用しているため、セルロースアセテー
ト樹脂と可塑剤との相溶性が低下し、ブツのようなもの
が存在するようになった。このブツは、目視して識別で
きるものである。When a plasticizer having a low molecular weight and good compatibility is used, the plasticizer is liable to evaporate and escape during or after molding of the cellulose acetate resin composition. This has a negative effect on the working environment and the dimensional stability of the molded product. Therefore, high molecular weight plasticizers have recently been used to solve these problems. However, when a cellulose acetate resin and a plasticizer are thermoplasticized in a usual manner to form a cellulose acetate-based resin composition, and further molded into a film or a fiber, a high-molecular weight plasticizer is used. The compatibility between the cellulose acetate resin and the plasticizer has been reduced, and there has been something like butter. These spots can be visually identified.
【０００４】[0004]
【課題を解決するための手段】本発明者は前記のブツの
部分を分析した結果、ブツのない正常な部分に比べて、
ブツの部分に可塑剤が少なく、セルロースアセテート含
有量が高いため、ブツの部分のガラス転移温度が低下せ
ず、可塑化されていないことを見出し、更にこのような
セルロースアセテートの可塑化不十分なブツの領域を減
少させるために鋭意検討を重ねた結果、セルロースアセ
テート系樹脂組成物中に存在するガラス転移温度が２０
０℃以上である直径０．１μｍ以上の領域を減少させ得
ることを見出し、本発明に到達したものである。すなわ
ち、請求項１の本発明は、重量平均分子量１０〜２５
万、平均置換度１．０〜２．５のセルロースアセテート
１００重量部と平均分子量３００以上の可塑剤２０〜１
００重量部を加熱、溶融、混合してなる組成物におい
て、該組成物中にガラス転移温度が２００℃以上である
直径０．１μｍ以上の領域が１ｇ当り１０個以下である
セルロースアセテート系樹脂組成物であり、請求項２の
本発明は、上記請求項１記載の組成物において、重量平
均分子量１０〜２５万、平均置換度１．０〜２．５のセ
ルロースアセテート樹脂の粒子径が１５０μｍ以下であ
ることを特徴とするセルロースアセテート系樹脂組成物
であり、請求項３の発明は重量平均分子量１０〜２５
万、平均置換度１．０〜２．５のセルロースアセテート
樹脂の粒径を１５０μｍ以下に調製したもの１００重量
部に、平均分子量３００以上の可塑剤２０〜１００重量
部を配合して得られる該組成物を加熱、溶融、混合する
ことを特徴とする、ガラス転移温度が２００℃以上であ
る直径０．１μｍ以上の領域が該組成物中に、１ｇ当り
１０個以下であるセルロースアセテート系樹脂組成物の
製造法である。The present inventor has analyzed the above-mentioned buttocks, and has found that, as compared to a normal part having no buts,
The plastic part is low in the buttocks and the content of cellulose acetate is high, so that the glass transition temperature of the buttocks does not decrease and is found to be not plasticized, and further insufficient plasticization of such cellulose acetate. As a result of intensive studies to reduce the area of lumps, the glass transition temperature present in the cellulose acetate-based resin composition was 20%.
The inventors have found that a region having a diameter of 0.1 μm or more, which is 0 ° C. or more, can be reduced, and have reached the present invention. That is, the present invention of claim 1 has a weight average molecular weight of 10 to 25.
100 parts by weight of cellulose acetate having an average degree of substitution of 1.0 to 2.5 and a plasticizer 20 to 1 having an average molecular weight of 300 or more.
In a composition obtained by heating, melting and mixing 00 parts by weight, a cellulose acetate-based resin composition having a glass transition temperature of 200 ° C. or more and a region having a diameter of 0.1 μm or more in the composition is 10 or less per 1 g. The present invention according to claim 2 is the composition according to claim 1, wherein the particle diameter of the cellulose acetate resin having a weight average molecular weight of 100,000 to 250,000 and an average degree of substitution of 1.0 to 2.5 is 150 μm or less. The cellulose acetate resin composition according to claim 3, wherein the weight average molecular weight is 10 to 25.
A cellulose acetate resin having an average degree of substitution of 1.0 to 2.5 and a particle size of 150 μm or less, prepared by mixing 100 to 100 parts by weight of a plasticizer having an average molecular weight of 300 or more with 20 to 100 parts by weight. A cellulose acetate-based resin composition having a glass transition temperature of 200 ° C. or more and a diameter of 0.1 μm or more in the composition, wherein the number is 10 or less per 1 g in the composition, wherein the composition is heated, melted, and mixed. It is a method of manufacturing a product.
【０００５】本発明では、組成物中に存在するガラス転
移温度が２００℃以上である直径０．１μｍ以上の領域
をブツといい、評価は、フィルム、繊維等厚さ１ｍｍ以
下の形状にして目視評価で計測されるブツの数で表わさ
れる。本発明のガラス転移温度は、一般に測定される方
法によって求められる。即ち、示差熱分析、示差走査熱
量測定等により求められるガラス転移温度をいう。In the present invention, a region having a glass transition temperature of 200 ° C. or more and a diameter of 0.1 μm or more, which is present in the composition, is referred to as a spot. It is represented by the number of spots measured in the evaluation. The glass transition temperature of the present invention is determined by a generally measured method. That is, it refers to a glass transition temperature determined by differential thermal analysis, differential scanning calorimetry, or the like.
【０００６】本発明に使用するセルロースアセテート
は、重量平均分子量１０〜２５万、平均置換度１．０〜
２．５のセルロースアセテートであり、生分解性を有す
る。使用するセルロースアセテートの重量平均分子量が
１０万未満であると該セルロースアセテートからの成形
物の機械的性質が好ましくなく、また使用するセルロー
スアセテートの重量平均分子量が２５万を超えると該セ
ルロースアセテートから成形物を製造することが困難に
なる。成形物の機械的性質および成形物を製造すること
の容易性の観点から使用するセルロースアセテートの重
量平均分子量は１５〜２０万であることが、更に好まし
い。使用するセルロースアセテートの平均置換度は１．
０〜２．５である。平均置換度１．０未満ではセルロー
スアセテートの流動性が悪くなり、２．５を超えるとセ
ルロースアセテートの加工性が悪くなる。セルロースア
セテートの流動性、加工性の観点から平均置換度が１．
７〜２．３のセルロースアセテートであることが、更に
好ましい。The cellulose acetate used in the present invention has a weight average molecular weight of 100,000 to 250,000 and an average degree of substitution of 1.0 to 1.0.
2.5 is a cellulose acetate having biodegradability. If the weight average molecular weight of the cellulose acetate used is less than 100,000, the mechanical properties of a molded article from the cellulose acetate are not preferred. If the weight average molecular weight of the cellulose acetate used exceeds 250,000, molding from the cellulose acetate is performed. It becomes difficult to manufacture things. The weight average molecular weight of the cellulose acetate used is more preferably 150,000 to 200,000 from the viewpoint of the mechanical properties of the molded product and the ease of producing the molded product. The average degree of substitution of the cellulose acetate used was 1.
0 to 2.5. If the average degree of substitution is less than 1.0, the fluidity of the cellulose acetate is poor, and if it exceeds 2.5, the processability of the cellulose acetate is poor. From the viewpoint of the flowability and processability of cellulose acetate, the average degree of substitution is 1.
More preferably, the cellulose acetate is 7 to 2.3.
【０００７】本発明に使用する可塑剤は、平均分子量３
００以上の化合物であり、オリゴマー、ポリマーも含
む。平均分子量３００未満の可塑剤は、セルロースアセ
テート系樹脂組成物の成形時あるいは成形後に可塑剤が
蒸発し抜け易いため、成形時の作業環境の悪化や成形物
の寸法安定性に悪影響を及ぼすからである。平均分子量
３００以上の可塑剤としては、例えば公知のフタル酸エ
ステル、即ち分子量３００以上のジヘプチルフタレー
ト、ジ−２−エチルヘキシルフタレート、ジ−ｎ−オク
チルフタレート、ブチルベンジルフタレート等、又トリ
メリット酸エステル、即ちトリ−２−エチルヘキシルト
リメリテート等、又脂肪族二塩基酸エステル、即ちジ−
２−エチルヘキシルアゼレート等、又正リン酸エステ
ル、即ちトリブトキシエチルホスフェート、トリフェニ
ルホスフェート、トリクレジルホスフェート、クレジル
ジフェニルホスフェート、２−エチルヘキシルジフェニ
ルホスフェート等、又リシノール酸エステル、即ちメチ
ルアセチルリシノレート等、又エステルオリゴマー、即
ちポリエチレンアジペート、ポリエチレンサクシネー
ト、ポリカプロラクトン等のオリゴマー、グリコール
類、即ちポリエチレングリコール、ポリプロピレングリ
コール等、などである。The plasticizer used in the present invention has an average molecular weight of 3
00 or more compounds, including oligomers and polymers. Since the plasticizer having an average molecular weight of less than 300 tends to evaporate and escape during or after molding of the cellulose acetate resin composition, the working environment during molding and the dimensional stability of the molded product are adversely affected. is there. Examples of the plasticizer having an average molecular weight of 300 or more include, for example, known phthalic acid esters, that is, diheptyl phthalate, di-2-ethylhexyl phthalate, di-n-octyl phthalate, butylbenzyl phthalate, and the like having a molecular weight of 300 or more, and trimellitate esters Ie, tri-2-ethylhexyl trimellitate and the like, and aliphatic dibasic acid esters, ie, di-
2-ethylhexyl azelate and the like, and orthophosphates such as tributoxyethyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyl diphenyl phosphate and 2-ethylhexyl diphenyl phosphate, and ricinoleic acid esters such as methyl acetyl ricinolate And ester oligomers such as oligomers such as polyethylene adipate, polyethylene succinate and polycaprolactone, and glycols such as polyethylene glycol and polypropylene glycol.
【０００８】本発明のセルロースアセテート系樹脂組成
物に配合する可塑剤の配合割合はセルロースアセテート
１００重量部に対し、可塑剤を２０〜１００重量部であ
る。可塑剤の配合割合が２０重量部未満では均一な可塑
化が困難であり、１００重量部を超えると物性の低下と
可塑剤の滲み出しが起こり好ましくないからである。The mixing ratio of the plasticizer to be added to the cellulose acetate resin composition of the present invention is 20 to 100 parts by weight of the plasticizer per 100 parts by weight of the cellulose acetate. If the blending ratio of the plasticizer is less than 20 parts by weight, uniform plasticization is difficult, and if it exceeds 100 parts by weight, physical properties decrease and bleeding of the plasticizer occurs, which is not preferable.
【０００９】また、本発明のセルロースアセテート系樹
脂組成物に、安定剤として弱有機酸、チオエーテル系化
合物、亜リン酸エステル化合物、エポキシ化合物を配合
して用いることもできる。さらに、これら安定剤等の分
散が良好でない場合には、有機溶剤等に安定剤等を溶解
させて添加しても構わない。Further, a weak organic acid, a thioether compound, a phosphite compound, or an epoxy compound can be blended as a stabilizer with the cellulose acetate resin composition of the present invention. Further, when the dispersion of these stabilizers and the like is not good, the stabilizers and the like may be dissolved in an organic solvent or the like and added.
【００１０】本発明のセルロースアセテート系樹脂組成
物、例えば次のようにして製造することができる。[0010] The cellulose acetate resin composition of the present invention, for example, can be produced as follows.
【００１１】原料セルロースにリンター、パルプ等の天
然物を用い、先ず適量の酢酸を用いて前処理を行ない、
続いて通常触媒として硫酸を用いて無水酢酸、氷酢酸と
ともに酢酸エステル化し、セルローストリアセテートを
作る。そして、完全に酢酸エステル化したセルロースア
セテートからアセチル基を均一に脱離させて様々な置換
度のセルロースアセテートを得る。この熟成を終えた酢
化浴に多量の水を加え、生成した酢酸セルロースを沈殿
させる。さらに、沈殿後水で数回洗浄を行ない、付着酸
分を十分除去して乾燥させる。このようにして、セルロ
ースアセテートフレークが得られる。このフレークを、
粉砕し、粉体の粒径が１５０μｍ以下になるように調整
する。調整はふるい等をもちいておこなう。粒径が１５
０μｍ以下に調整されたセルロースアセテート粉体に上
記した可塑剤を加えて、粉体と可塑剤とを混合し、押出
機等で溶融溶融混合して、ペレット状のガラス転移温度
が２００℃以上である直径０．１μｍ以上の領域が１ｇ
当り１０個以下である本発明のセルロースアセテート系
樹脂組成物を得る。[0011] Using natural materials such as linters and pulp as raw material cellulose, firstly, pretreatment is performed using an appropriate amount of acetic acid.
Subsequently, acetic acid ester is usually esterified with acetic anhydride and glacial acetic acid using sulfuric acid as a catalyst to produce cellulose triacetate. Then, acetyl groups are uniformly eliminated from the completely acetate-esterified cellulose acetate to obtain cellulose acetate having various degrees of substitution. A large amount of water is added to the matured acetylation bath to precipitate the produced cellulose acetate. Further, the precipitate is washed several times with water to sufficiently remove the adhering acid component and dried. Thus, a cellulose acetate flake is obtained. This flake
It is pulverized and adjusted so that the particle size of the powder is 150 μm or less. Adjustment is performed using a sieve or the like. Particle size 15
The above-mentioned plasticizer is added to the cellulose acetate powder adjusted to 0 μm or less, the powder and the plasticizer are mixed, and the mixture is melted and mixed by an extruder or the like. 1 g for a region with a diameter of 0.1 μm or more
The cellulose acetate resin composition of the present invention having 10 or less per cell is obtained.
【００１２】セルロースアセテート系樹脂組成物は、そ
の熱可塑化工程において１５０〜２５０℃の温度で成形
される。それ以上の温度ではセルロースアセテート自身
の熱分解が起こり望ましくない。The cellulose acetate resin composition is molded at a temperature of 150 to 250 ° C. in the thermoplasticizing step. At a temperature higher than that, thermal decomposition of the cellulose acetate itself occurs, which is not desirable.
【００１３】[0013]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明するが、本発明は勿論これらに限定されるものでは
ない。EXAMPLES The present invention will be described more specifically with reference to examples below, but the present invention is of course not limited to these.
【００１４】実施例１〜４ 重量平均分子量１７万、平均置換度２．１，又は重量平
均分子量２０．５万、平均置換度２．４のセルロースア
セテートフレークス（ダイセル化学工業（株）製）を粉
砕後セルロースアセテートの粉体の粒径を１５０μｍ以
下にふるいを用いて調整した。得られた粒径が１５０μ
ｍ以下のセルロースアセテートの粉体１００重量部に対
し、可塑剤として平均分子量５５０のプラクセル３０５
（商品名：ダイセル化学工業（株）製、カプロラクトン
オリゴマー）、平均分子量４００のポリエチレングリコ
ール（三洋化成（株）製）のいづれかを下記の表１に示
すように４０重量部を加えた後、ヘンシェルで十分混合
し、９０℃で８時間乾燥した。乾燥したコンパウンドを
３０ｍ／ｍΦの２軸押出機を用い、２３０℃の温度でペ
レット化した。更にこのペレットを用いて、１５０ｍｍ
幅のＴ−ダイを装着した１軸押出機を用いて２３０℃で
再溶解し２００μｍのフィルムを成形した。このフィル
ムを用いて、単位重量当りのブツの個数を目視評価し
た。以上の結果を第１表に示した。Examples 1 to 4 Cellulose acetate flakes (manufactured by Daicel Chemical Industries, Ltd.) having a weight average molecular weight of 170,000 and an average degree of substitution of 2.1, or a weight average molecular weight of 205,000 and an average degree of substitution of 2.4 were prepared. After pulverization, the particle size of the cellulose acetate powder was adjusted to 150 μm or less using a sieve. The obtained particle size is 150μ
m of cellulose acetate powder having a mean molecular weight of 550 as plasticizer with respect to 100 parts by weight of powder of cellulose acetate having a molecular weight of 550 m or less.
After adding 40 parts by weight of either polyethylene glycol having an average molecular weight of 400 (manufactured by Daicel Chemical Industries, Ltd., caprolactone oligomer) or an average molecular weight of 400 (manufactured by Sanyo Chemical Co., Ltd.) as shown in Table 1 below, Henschel And dried at 90 ° C. for 8 hours. The dried compound was pelletized at a temperature of 230 ° C. using a twin screw extruder of 30 m / mΦ. Furthermore, using this pellet, 150mm
Using a single screw extruder equipped with a T-die having a width, the film was redissolved at 230 ° C. to form a 200 μm film. Using this film, the number of bumps per unit weight was visually evaluated. The results are shown in Table 1.
【００１５】比較例１〜３ 比較のため実施例１〜４に用いたのと同じセルロースア
セテートフレークスを１５０μｍまで粉砕することなく
粒径が２００〜３００μｍを用いた以外は、実施例１〜
４と同様の操作を行いペレットを得た。更にこのペレッ
トを用いて、実施例１〜４と同様に、１５０ｍｍ幅のＴ
−ダイを装着した１軸押出機を用いて２３０℃で再溶解
し２００μｍのフィルムを成形した。このフィルムを用
いて、単位重量当りのブツの個数を目視評価した。以上
の結果を第１表に示した。Comparative Examples 1 to 3 For comparison, the same cellulose acetate flakes as used in Examples 1 to 4 were used except that the particle size was 200 to 300 μm without grinding to 150 μm.
The same operation as in Example 4 was performed to obtain a pellet. Further, using this pellet, as in Examples 1 to 4, a 150 mm wide T
Using a single screw extruder fitted with a die, redissolved at 230 ° C. to form a 200 μm film. Using this film, the number of bumps per unit weight was visually evaluated. The results are shown in Table 1.
【００１６】表１から明らかなように比較例１〜３のよ
うに粒径が２００〜３００μｍのセルロースアセテート
を用いた場合はブツが多く存在している。しかし、実施
例１〜４のようにセルロースアセテートの粒径を１５０
μｍ以下にした場合は、ブツはかなり減少している。As is clear from Table 1, when cellulose acetate having a particle size of 200 to 300 μm is used as in Comparative Examples 1 to 3, there are many bumps. However, as in Examples 1-4, the particle size of cellulose acetate was
When the thickness is reduced to μm or less, the spots are considerably reduced.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【発明の効果】本発明によれば、可塑剤として、相溶性
の低くなる分子量の高いものを用いてもブツの少ない均
一に可塑化されたセルロースアセテート系樹脂組成物及
びその成形品が得られる。According to the present invention, a homogeneously plasticized cellulose acetate resin composition having few bumps and a molded article thereof can be obtained even if a plasticizer having a low molecular weight and a low compatibility is used. .
Claims (3)
１．０〜２．５のセルロースアセテート１００重量部と
平均分子量３００以上の可塑剤２０〜１００重量部を加
熱、溶融、混合してなる組成物において、該組成物中
に、ガラス転移温度が２００℃以上である直径０．１μ
ｍ以上の領域が１ｇ当り１０個以下であるセルロースア
セテート系樹脂組成物。1. Heating, melting and mixing 100 parts by weight of cellulose acetate having a weight average molecular weight of 100,000 to 250,000 and an average degree of substitution of 1.0 to 2.5 and 20 to 100 parts by weight of a plasticizer having an average molecular weight of 300 or more. In a composition, the composition has a glass transition temperature of 200 ° C. or more and a diameter of 0.1 μm.
A cellulose acetate-based resin composition in which the number of regions of m or more is 10 or less per 1 g.
平均分子量１０〜２５万、平均置換度１．０〜２．５の
セルロースアセテート樹脂の粒径が１５０μｍ以下であ
ることを特徴とするセルロースアセテート系樹脂組成
物。2. The composition according to claim 1, wherein the cellulose acetate resin having a weight average molecular weight of 100,000 to 250,000 and an average degree of substitution of 1.0 to 2.5 has a particle size of 150 μm or less. Cellulose acetate resin composition.
１．０〜２．５のセルロースアセテート樹脂の粒径を１
５０μｍ以下に調製したもの１００重量部に、平均分子
量３００以上の可塑剤２０〜１００重量部を配合して得
られる該組成物を加熱、溶融、混合することを特徴とす
る、ガラス転移温度が２００℃以上である直径０．１μ
ｍ以上の領域が該組成物中に、１ｇ当り１０個以下であ
るセルロースアセテート系樹脂組成物の製造法。3. A cellulose acetate resin having a weight average molecular weight of 100,000 to 250,000 and an average degree of substitution of 1.0 to 2.5, having a particle size of 1
A composition prepared by blending 20 to 100 parts by weight of a plasticizer having an average molecular weight of 300 or more with 100 parts by weight of a composition prepared to have a glass transition temperature of 200 μm or less. 0.1μ diameter which is above ℃
A method for producing a cellulose acetate-based resin composition, wherein the number of regions of at least m is 10 or less per 1 g of the composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07318598A JP3958431B2 (en) | 1998-03-06 | 1998-03-06 | Cellulose acetate resin composition and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07318598A JP3958431B2 (en) | 1998-03-06 | 1998-03-06 | Cellulose acetate resin composition and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11255959A true JPH11255959A (en) | 1999-09-21 |
| JP3958431B2 JP3958431B2 (en) | 2007-08-15 |
Family
ID=13510839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07318598A Expired - Fee Related JP3958431B2 (en) | 1998-03-06 | 1998-03-06 | Cellulose acetate resin composition and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3958431B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8012384B2 (en) | 2004-09-14 | 2011-09-06 | Konica Minolta Opto, Inc. | Polarizing plate protective film and manufacturing method for the same |
| JP2015140432A (en) * | 2014-01-30 | 2015-08-03 | 株式会社ダイセル | Water soluble acetic cellulose-based resin composition, water soluble acetic cellulose composite molded article and production method thereof |
| WO2016203657A1 (en) * | 2015-06-19 | 2016-12-22 | 株式会社ダイセル | Water-soluble cellulose acetate resin composition, coated preparation, water-soluble cellulose acetate composite molded article and method for producing same |
| WO2022014463A1 (en) * | 2020-07-13 | 2022-01-20 | 株式会社ダイセル | Cellulose acetate particles, cosmetic composition, and method for producing cellulose acetate particles |
| WO2022030573A1 (en) | 2020-08-07 | 2022-02-10 | 株式会社ダイセル | Cellulose acetate resin composition |
| WO2022030013A1 (en) | 2020-08-07 | 2022-02-10 | 株式会社ダイセル | Cellulose acetate resin composition |
-
1998
- 1998-03-06 JP JP07318598A patent/JP3958431B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8012384B2 (en) | 2004-09-14 | 2011-09-06 | Konica Minolta Opto, Inc. | Polarizing plate protective film and manufacturing method for the same |
| JP2015140432A (en) * | 2014-01-30 | 2015-08-03 | 株式会社ダイセル | Water soluble acetic cellulose-based resin composition, water soluble acetic cellulose composite molded article and production method thereof |
| WO2016203657A1 (en) * | 2015-06-19 | 2016-12-22 | 株式会社ダイセル | Water-soluble cellulose acetate resin composition, coated preparation, water-soluble cellulose acetate composite molded article and method for producing same |
| KR20180019660A (en) * | 2015-06-19 | 2018-02-26 | 주식회사 다이셀 | Water-soluble cellulose acetate resin composition, coated preparation, water-soluble cellulose acetate composite molded article and method for producing same |
| JPWO2016203657A1 (en) * | 2015-06-19 | 2018-04-05 | 株式会社ダイセル | Water-soluble cellulose acetate resin composition, coating preparation, water-soluble cellulose acetate composite molded article, and method for producing the same |
| WO2022014463A1 (en) * | 2020-07-13 | 2022-01-20 | 株式会社ダイセル | Cellulose acetate particles, cosmetic composition, and method for producing cellulose acetate particles |
| WO2022014084A1 (en) * | 2020-07-13 | 2022-01-20 | 株式会社ダイセル | Cellulose acetate particles, cosmetic composition, and method for producing cellulose acetate particles |
| CN115701981A (en) * | 2020-07-13 | 2023-02-14 | 株式会社大赛璐 | Cellulose acetate particle, cosmetic composition, and method for producing cellulose acetate particle |
| WO2022030573A1 (en) | 2020-08-07 | 2022-02-10 | 株式会社ダイセル | Cellulose acetate resin composition |
| WO2022030013A1 (en) | 2020-08-07 | 2022-02-10 | 株式会社ダイセル | Cellulose acetate resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3958431B2 (en) | 2007-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10875932B2 (en) | Cellulose acetate powder and method of producing cellulose acetate powder | |
| CN1158306C (en) | Cellulose acetate having excellent physical strength and process for preparing the same | |
| JP6701346B2 (en) | Novel cellulose acetate-containing plasticizing composition | |
| WO2013168713A1 (en) | Cellulose resin composition | |
| JP5514597B2 (en) | Method for producing thermoplastic cellulose composition and method for producing molded article thereof | |
| JP2007051304A (en) | Acetylcellulose resin composition | |
| JP3958431B2 (en) | Cellulose acetate resin composition and method for producing the same | |
| JP6802720B2 (en) | Cellulose acetate and moldings | |
| JP2000219777A (en) | Thermoplastic cellulose derivative composition and molding prepared therefrom | |
| JPS61276836A (en) | Cellulose derivative resin composition | |
| JP3620265B2 (en) | Method for producing lactic acid copolymer | |
| JP2017137392A (en) | Resin composition, resin molding, and method for producing resin composition | |
| JP4042838B2 (en) | Method for producing acetylcellulose resin composition | |
| JP2000109665A (en) | Production of organic-containing biodegradable composition | |
| JP3932997B2 (en) | Method for producing cellulose ester composition | |
| JP2009167253A (en) | Member for business machine | |
| CN113896952A (en) | High-transparency cellulose acetate material and preparation method thereof | |
| JP4386221B2 (en) | Acetylcellulose resin composition and method for producing the same | |
| JP2000297180A (en) | Pyrrolidonecarboxylic ester plasticizer and cellulose derivative resin composition | |
| CN113264835B (en) | Lactoyl citrate plasticizer and preparation method thereof | |
| JP2004091702A (en) | Method for producing cellulose ester composition | |
| EP3907054A1 (en) | Method of production thermoplastic starch, and thermoplastic starch so produced | |
| JP2005247911A (en) | Method for producing thermoplastic cellulose ester composition | |
| JP2011132450A (en) | Molding material, molding, and method for producing the same, and housing for electric and electronic equipment | |
| WO2022266305A1 (en) | Biodegradable cellulose acetate foams |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041014 |
|
| A977 | Report on retrieval |
Effective date: 20060814 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060822 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061017 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Effective date: 20070508 Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Effective date: 20070510 Free format text: JAPANESE INTERMEDIATE CODE: A61 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100518 Year of fee payment: 3 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 3 Free format text: PAYMENT UNTIL: 20100518 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |