JPH0551017B2 - - Google Patents
Info
- Publication number
- JPH0551017B2 JPH0551017B2 JP60100302A JP10030285A JPH0551017B2 JP H0551017 B2 JPH0551017 B2 JP H0551017B2 JP 60100302 A JP60100302 A JP 60100302A JP 10030285 A JP10030285 A JP 10030285A JP H0551017 B2 JPH0551017 B2 JP H0551017B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- resin
- water
- polyvinyl chloride
- super absorbent
- 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.)
- Expired - Lifetime
Links
- 239000011347 resin Substances 0.000 claims description 36
- 229920005989 resin Polymers 0.000 claims description 36
- 239000002250 absorbent Substances 0.000 claims description 13
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 13
- 239000004800 polyvinyl chloride Substances 0.000 claims description 13
- 230000002745 absorbent Effects 0.000 claims description 12
- 239000004014 plasticizer Substances 0.000 claims description 10
- 238000004898 kneading Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000156978 Erebia Species 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- NPERTKSDHFSDLC-UHFFFAOYSA-N ethenol;prop-2-enoic acid Chemical compound OC=C.OC(=O)C=C NPERTKSDHFSDLC-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/04—Making granules by dividing preformed material in the form of plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
この発明は水膨潤性樹脂及びその製造方法に関
する。
これまでの水膨潤性樹脂は高吸水性樹脂に対す
る混合樹脂としてEVA、ウレタン、ゴム等があ
つた。
即ち、高吸水性樹脂が水分の吸収作用をするも
のである以上、混合樹脂としては油性のものを避
けることが水膨潤性樹脂としは望ましいとする考
えからであつた。
しかしながらこれまでの水膨潤性樹脂による加
工品は耐久性がなく、永時の使用において破損す
る欠点があつた。この為例えば新品と交換する作
業が大がかりとなる付随的問題点も発生してい
た。
ここにおいて、本発明者は水膨潤性樹脂の加工
物が高吸水状態において弾力性に富み、圧縮して
も容易に壊れないものとすべき水膨潤性樹脂及び
その製造方法を提供するに至たのである。即ち、
本発明は高吸水性樹脂と可塑剤とポリ塩化ビニル
とから成る水膨潤性樹脂を製造する方法であつ
て、高吸水性樹脂10〜200重量部と可塑剤20〜120
重量部とを充分に撹拌・混練して均一に分散させ
る第一工程と、この第一工程によつて得られた混
練物にポリ塩化ビニル100重量部を混和して混練
する第二工程とから成る。
本発明の実施例を詳述すると先づ高吸水性樹脂
は可塑剤によつて分散されたゲル状状となり（第
一工程）これにポリ塩化ビニルがドツキングすべ
く安定剤と共に混練（第二工程）して水膨潤性樹
脂を製造している。
この発明の配合割合は加工物の用途に応ずれば
良く、その配合割合はポリ塩化ビニル100部（重
量部 以下同様）に対して高吸水性樹脂10〜200
部、可塑剤20〜120部、安定剤２〜６部とする。
但し高吸水性樹脂が10部のばあい前記配合以外に
高吸水性樹脂加工助剤10部を混合する。またポリ
塩化ビニル樹脂が重合度500のばあい前記配合以
外に物性を向上するためアクリル系強化剤０〜30
部を混合する。
以上の配合割合において例えば撹拌機に高吸水
性樹脂を入れ、次いで可塑剤を投入して（高吸水
性樹脂加工助材が必要のばあい投入）約20分前後
混練し（第一工程）、次に、ポリ塩化ビニル、安
定剤（塩化ビニル樹脂強化剤が必要なばあい投
入）を混入して概略５分以上混練する。而して上
記工程によつて得られた水膨潤性樹脂は混練ロー
ラにて120℃〜180℃の温度を保持しながら７〜８
分間混練した後リボン状で連続的に取り出すが、
この後ストレーナー押出機に入れてペレツトに加
工したりあるいはカレンダーロールに通してシー
トに加工したりする。次に上記によつて得られた
ペレツトの体積膨張率の経時的変化の一例を表に
示す。
配合割合
●ポリ塩化ビニル（住友化学工業(株)製スミリツト
SX−11F）
（三井東圧化学(株)製ミクロン3000M） 100部
●高吸水性樹脂（住友化学工業(株)製スミカゲル
SP−510）
（クラレイソプレンケミカル(株)製K.Iゲル）
（勝山産業(株)製K.Yゲル） 100部
●可塑剤（協和発酵工業(株)DOP） 100部
● 安定剤（アデカ．アーガス化学(株)製MRK.
AC−169） ５部
The present invention relates to a water-swellable resin and a method for producing the same. Previous water-swellable resins include EVA, urethane, rubber, etc. as mixed resins for super absorbent resins. That is, since superabsorbent resins have a water-absorbing effect, it is desirable to avoid oil-based mixed resins when using water-swellable resins. However, conventional products made from water-swellable resins lack durability and have the disadvantage of being damaged during long-term use. For this reason, an incidental problem has arisen in which, for example, the work of replacing it with a new one is extensive. Here, the present inventor has provided a water-swellable resin and a method for producing the same, in which a processed product of the water-swellable resin has high elasticity in a highly water-absorbing state and does not break easily even when compressed. It is. That is,
The present invention is a method for producing a water-swellable resin comprising a superabsorbent resin, a plasticizer, and polyvinyl chloride, the method comprising: 10 to 200 parts by weight of the superabsorbent resin and 20 to 120 parts by weight of the plasticizer.
Parts by weight are sufficiently stirred and kneaded to uniformly disperse the mixture, and a second step is to mix and knead 100 parts by weight of polyvinyl chloride into the kneaded product obtained in this first step. Become. Describing the embodiments of the present invention in detail, first, the superabsorbent resin becomes a gel-like state dispersed with a plasticizer (first step), and is kneaded with a stabilizer to dock polyvinyl chloride (second step). ) to produce water-swellable resins. The blending ratio of this invention may be determined according to the use of the processed product, and the blending ratio is 10 to 200 parts of super absorbent resin to 100 parts of polyvinyl chloride (same parts by weight below).
parts, 20 to 120 parts of plasticizer, and 2 to 6 parts of stabilizer.
However, if the super absorbent resin is 10 parts, 10 parts of a super absorbent resin processing aid is mixed in addition to the above ingredients. In addition, when the polyvinyl chloride resin has a polymerization degree of 500, an acrylic reinforcing agent of 0 to 30% is added in addition to the above formulation to improve physical properties.
Mix parts. At the above blending ratio, for example, put the super absorbent resin in a stirrer, then add the plasticizer (add super absorbent resin processing aids if necessary) and knead for about 20 minutes (first step), Next, polyvinyl chloride and a stabilizer (add a vinyl chloride resin reinforcing agent if necessary) are mixed and kneaded for about 5 minutes or more. The water-swellable resin obtained by the above process is heated at a temperature of 7 to 8 degrees Celsius using a kneading roller while maintaining a temperature of 120 to 180 degrees Celsius.
After kneading for a minute, it is continuously taken out in a ribbon shape.
After this, it is put into a strainer extruder and processed into pellets, or passed through calender rolls to be processed into sheets. Next, an example of the change over time in the volumetric expansion coefficient of the pellets obtained as described above is shown in the table. Blend ratio: Polyvinyl chloride (Sumiritsu manufactured by Sumitomo Chemical Co., Ltd.)
SX-11F) (Micron 3000M manufactured by Mitsui Toatsu Chemical Co., Ltd.) 100 parts ●Super absorbent resin (Sumikagel manufactured by Sumitomo Chemical Co., Ltd.)
SP-510) (KI Gel manufactured by Clarei Soprene Chemical Co., Ltd.) (KY Gel manufactured by Katsuyama Sangyo Co., Ltd.) 100 parts●Plasticizer (Kyowa Hakko Kogyo Co., Ltd.DOP) 100 parts●Stabilizer (Adeka. Argus Chemical Co., Ltd.) MRK manufactured by Co., Ltd.
AC-169) 5 copies
【表】
上記表から明白なように本発明による加工物は
体積膨張が時間の経過にともなつて大きくなり、
また最大吸水時の物性、例えば抗張力、伸びは従
来のものに比較して優れ、しかも高吸水性樹脂に
対する混合樹脂がポリ塩化ビニルであるから耐久
性は良く、半永久的に使用できるから盲頭に述べ
た従来の欠点を解消している。
さらに本発明は加工法がゴムの如き加硫工程が
なく、軟質ビニールのペレツトとほぼ同一条件で
成型が容易に行ない得るし、また着色も簡単にで
きる。剰え、本発明による加工物は従来のものに
比べ耐光性が優れているので用途範囲も拡がるも
のと思料される。
前記の通り、本発明は高吸水性樹脂が可塑剤に
よつて分散した混練物にポリ塩化ビニルが分離す
ることなく完全になじんだ水膨潤性樹脂であるか
らこの加工物である例えばペレツトの耐久性は従
来の水膨潤性樹脂による加工物に比し極めて良好
なものとなつた。
また本発明の方法では、まず高吸水性樹脂と可
塑剤とを混練して均一に分散させたうえでポリ塩
化ビニルを混和するようにしているから、ポリ塩
化ビニルと高吸水性樹脂とが従来のものに比しは
るかに均一に分散される。そのためシート状に成
形した場合、吸水膨潤作用がシート全体に均一に
生ずるので、三者を同時に混練した従来の方法に
よるシートに比してきわめて強度および耐久性が
高い。しかも膨潤するときに均一に膨潤するの
で、従来のもののように凹凸が生じず、パツキン
やシールの性能を長期にわたつて好適に維持す
る。
また、その結果として、耐久性を強く要望する
と共に交換が困難な地中埋設物等として使用でき
るからこれまでの物よりも用途範囲が拡がること
になる。[Table] As is clear from the above table, the volume expansion of the workpiece according to the present invention increases with the passage of time.
In addition, the physical properties at maximum water absorption, such as tensile strength and elongation, are superior to conventional ones, and since the mixed resin for the super absorbent resin is polyvinyl chloride, it has good durability and can be used semi-permanently, so it can be used semi-permanently. The conventional drawbacks mentioned above are solved. Furthermore, the processing method of the present invention does not require a vulcanization step as in the case of rubber, so it can be easily molded under almost the same conditions as soft vinyl pellets, and it can also be easily colored. Additionally, the processed product according to the present invention has superior light resistance compared to conventional products, so it is thought that the range of applications will be expanded. As mentioned above, the present invention is a water-swellable resin in which polyvinyl chloride is completely blended into a kneaded material in which a super-absorbent resin is dispersed with a plasticizer, so that the durability of processed products such as pellets can be improved. The properties were extremely good compared to products processed using conventional water-swellable resins. In addition, in the method of the present invention, the super absorbent resin and the plasticizer are first kneaded and dispersed uniformly, and then the polyvinyl chloride is mixed, so that the polyvinyl chloride and the super absorbent resin are It is much more uniformly dispersed than the standard. Therefore, when formed into a sheet, the water absorption and swelling effect occurs uniformly throughout the sheet, resulting in extremely high strength and durability compared to sheets made by the conventional method of kneading all three components at the same time. Moreover, since it swells uniformly when it swells, unlike conventional products, unevenness does not occur, and the performance of the gasket and seal can be suitably maintained over a long period of time. Moreover, as a result, it can be used as underground objects that require strong durability and are difficult to replace, so the range of applications will be expanded compared to conventional products.
Claims (1)
ら成る水膨潤性樹脂の製造方法であつて、 高吸水性樹脂10〜200重量部と可塑剤20〜120部
とを充分に撹拌・混練して均一に分散させる第一
工程と、 この第一工程によつて得られる混練物にポリ塩
化ビニル100重量部を混和して混練する第二工程 とから成る水膨潤性樹脂の製造方法。[Scope of Claims] 1. A method for producing a water-swellable resin comprising a super absorbent resin, a plasticizer, and polyvinyl chloride, comprising: 10 to 200 parts by weight of the super absorbent resin and 20 to 120 parts by weight of the plasticizer. A water-swellable resin consisting of a first step of sufficiently stirring and kneading to uniformly disperse the resin, and a second step of mixing and kneading 100 parts by weight of polyvinyl chloride into the kneaded product obtained in the first step. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10030285A JPS61258711A (en) | 1985-05-10 | 1985-05-10 | Preparation of pellet and sheet of swellable polyvinyl chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10030285A JPS61258711A (en) | 1985-05-10 | 1985-05-10 | Preparation of pellet and sheet of swellable polyvinyl chloride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61258711A JPS61258711A (en) | 1986-11-17 |
| JPH0551017B2 true JPH0551017B2 (en) | 1993-07-30 |
Family
ID=14270372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10030285A Granted JPS61258711A (en) | 1985-05-10 | 1985-05-10 | Preparation of pellet and sheet of swellable polyvinyl chloride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61258711A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62195049A (en) * | 1986-02-22 | 1987-08-27 | Sumika Color Kk | Production of highly water absorbing resin composition |
| JP2699126B2 (en) * | 1991-08-31 | 1998-01-19 | 広島化成株式会社 | Method for producing thermoplastic resin composition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50116530A (en) * | 1974-02-28 | 1975-09-11 | ||
| JPS55131041A (en) * | 1979-03-30 | 1980-10-11 | Mitsubishi Monsanto Chem Co | Production of thermoplastic resin composition |
| JPS55131035A (en) * | 1979-03-30 | 1980-10-11 | Mitsubishi Monsanto Chem Co | Polyvinyl chloride resin composition |
| JPS59122519A (en) * | 1982-12-28 | 1984-07-16 | Mitsubishi Monsanto Chem Co | Manufacture of water-absorbing sheet and water-absorbing composite material |
-
1985
- 1985-05-10 JP JP10030285A patent/JPS61258711A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50116530A (en) * | 1974-02-28 | 1975-09-11 | ||
| JPS55131041A (en) * | 1979-03-30 | 1980-10-11 | Mitsubishi Monsanto Chem Co | Production of thermoplastic resin composition |
| JPS55131035A (en) * | 1979-03-30 | 1980-10-11 | Mitsubishi Monsanto Chem Co | Polyvinyl chloride resin composition |
| JPS59122519A (en) * | 1982-12-28 | 1984-07-16 | Mitsubishi Monsanto Chem Co | Manufacture of water-absorbing sheet and water-absorbing composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61258711A (en) | 1986-11-17 |
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