JPS6261058B2 - - Google Patents
Info
- Publication number
- JPS6261058B2 JPS6261058B2 JP1278079A JP1278079A JPS6261058B2 JP S6261058 B2 JPS6261058 B2 JP S6261058B2 JP 1278079 A JP1278079 A JP 1278079A JP 1278079 A JP1278079 A JP 1278079A JP S6261058 B2 JPS6261058 B2 JP S6261058B2
- Authority
- JP
- Japan
- Prior art keywords
- pvc
- parts
- silicic acid
- polyvinyl chloride
- present
- 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
Links
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 43
- 239000004800 polyvinyl chloride Substances 0.000 claims description 43
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 31
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 15
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- 239000000178 monomer Substances 0.000 description 8
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920001519 homopolymer Polymers 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- -1 ethylene, propylene, vinyl Chemical group 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は耐衝撃性の優れたポリ塩化ビニル組成
物に関する。詳しくは、ポリ塩化ビニルに対して
脂肪酸で表面処理した微細炭酸カルシウム及び特
定された含水珪酸を混合した新規なポリ塩化ビニ
ル組成物を提供するものである。尚、本発明で云
うポリ塩化ビニルとは塩化ビニルモノマーを単独
で重合させた塩化ビニル単独重合体及び塩化ビニ
ルモノマーと共重合可能な他のモノマーとを共重
合させた塩化ビニル共重合体を含む総称であり、
PVCとも略記する。また本発明に於ける含水珪
酸の比表面積は特に記さない限りBET法による
表示である。更に、「部」は全て「重量部」を示
す。
PVCは古くから知られている汎用樹脂で、広
い用途に使用されている。PVCの改質もその使
用分野で要求される性状に応じて種々提案されて
いる。例えばPVCの耐衝撃性を改良させるため
特定の無機物を添加させることは公知である。そ
の代表的なものを例示すれば表面処理した微細炭
酸カルシウムをPVC100部に対して30〜50部添加
する技術が知られている。しかしながら、このよ
うに添加する無機物が多量になるとPVCが本来
有する優れた種々の性状を損うことになり、耐衝
撃性が改良されても他の性状の低下をきたし実質
的に実用に供することが出来なくなる分野が多
い。即ち、PVCに少量の無機物の添加でPVCが
本来有する優れた性状を保持したまゝ耐衝撃性を
改良する技術の開発は大きな課題の１つであつ
た。
本発明者等はこれらの欠陥を補うPVC組成物
の開発を鋭意続けて来た結果、特定の含水珪酸を
少量添加することで極めて耐衝撃性を改良出来る
だけでなく、前記した無機充填剤の添加量を極端
に減少出来ることを知見し、本発明を完成させる
に至つた。
即ち、本発明はPVC100部に対して脂肪酸で表
面処理された微細炭酸カルシウム５〜25部及び比
表面積115〜215m2／ｇの含水珪酸0.1〜５部を混
合したPVC組成物である。
本発明で用いるPVCは塩化ビニルモノマーを
単独で重合したポリ塩化ビニル単独重合体及び塩
化ビニルモノマーと共重合可能な他のモノマーと
を共重合させた塩化ビニル共重合体のいずれをも
用いることが出来る。一般には前者即ちポリ塩化
ビニル単独重合体が最も広く用いられる。また後
者即ちポリ塩化ビニル共重合体は特に限定されず
公知のものが使用出来るが、一般には塩化ビニル
モノマーと共重合可能な他のモノマー例えばエチ
レン，プロピレン，酢酸ビニル，アクリル酸エス
テル，アクリロニトリル等を50％以下共重合させ
たポリ塩化ビニル共重合体が好適に使用される。
また本発明で用いる炭酸カルシウムは脂肪酸で
表面処理された微細炭酸カルシウムが使用出来
る。一般には微細炭酸カルシウムにステアリン
酸，パルミチン酸等の脂肪酸で処理したものが好
適に使用される。該炭酸カルシウムは微細なもの
が好ましく一般には0.02〜0.1μ程度の粉状体が
好適である。
更にまた本発明で用いる含水珪酸は通称ホワイ
トカーボンと称されるもので、一般に湿式法で製
造された一次粒子径５〜50mμ程度の無定形二酸
化珪素である。該含水珪酸は種々の種類が市販さ
れているが、本発明で用いる含水珪酸はその比表
面積115〜215m2／ｇ好ましくは130〜180m2／ｇの
ものである必要がある。後述する実施例及び比較
例で明らかな如く、含水珪酸の比表面積が上記の
下限値より小さくなると耐衝撃性の改良が十分で
なく。逆に上記の上限値より大きくなつても耐衝
撃性が十分に出ないので好ましくない。本発明の
組成物に於いて含水珪酸の比表面積がどのような
作用をするのかその原理は明らかでないが、本発
明者は含水珪酸凝集性或いはPVCに対する相溶
性が特に脂肪酸で表面処理した微細炭酸カルシウ
ムと相乗的に作用して本発明の効果を発揮するも
のと推定している。
前記した如く本発明で使用する含水珪酸の比表
面積はPVCの耐衝撃性の改良に著しく大きな影
響を有する。従つて本発明で用いる含水珪酸は比
表面積が前記範囲となる如く選ぶ必要があるが、
含水珪酸を予め他の化合物で処理することは必要
に応じて選択出来る。例えばPVC組成物を形成
した場合に成形物が着色することを防止する時
は、PVCに着色防止剤として通常添加される少
量の滑剤例えば脂肪酸系滑剤，油脂系滑剤，金属
石けんで予め含水珪酸を処理しておくとよい。
本発明に於ける効果はPVCの耐衝撃性を向上
させるだけでなく、PVCが本来有する優れた諸
物性を減ずることのない組成物にある。従つて、
従来公知の如くPVCに無機物を40〜50部と多量
に添加することはない。即ち前記特定の含水珪酸
を少量添加することにより表面処理した微細炭酸
カルシウムの配合割合をPVC100部に対して５〜
25部の範囲に減少しても十分な効果を達成出来
る。該微細炭酸カルシウムの配合割合が上記の下
限値より少ない場合は得られるポリ塩化ビニル組
成物の耐衝撃性が十分に改善出来ない。また該微
細炭酸カルシウムの配合割合が前記の上限値より
多くなるとポリ塩化ビニル組成物の物性が、
PVCが本来有する優れた物性を保持出来なくな
るので好ましくない。最も好ましい該微細炭酸カ
ルシウムの配合割合はPVC100部に対して５〜20
部の範囲である。
また本発明に於て使用する前記特定の含水珪酸
の配合割合はPVC100部に対して0.1〜５部好まし
くは0.5〜３部の範囲である。該含水珪酸の配合
割合が上記下限値より少ない場合は得られるポリ
塩化ビニル組成物の耐衝撃性が改善出来ず、逆に
多い場合は経済的に不利となるばかりでなく耐衝
撃性の改善が不十分で、しかもポリ塩化ビニル組
成物の物性に影響を与えるので好ましくない。
以上の説明から明らかな如く本発明のポリ塩化
ビニル組成物は耐衝撃性が公知の無機物例えば表
面処理した微細炭酸カルシウム10部配合したもの
に比較して80％以上改善出来るばかりでなく、該
表面処理した微細炭酸カルシウムの配合割合も極
端に減少出来るのでPVCが有する優れた諸物性
を十分に保持出来るものである。本発明のポリ塩
化ビニル組成物は従来実施されているような他の
配合剤例えば安定剤，滑剤，老化防止剤，着色剤
等の配合を必要に応じて実施出来る。
本発明を更に具体的に説明するため以下実施例
及び比較例を挙げて説明するが本発明はこれらの
実施例に限定されるものではない。
尚、以下の実施例及び比較例に於けるPVC組
成物の物性はシヤルピー衝撃強さ，引張強さ及び
伸びをそれぞれJIS Ｋ 6745の方法に準じて測定
したものを表示した。
実施例 １
下記に示す配合処方で予めヘンシエルミキサー
で混合しPVC組成物とした。これを表面温度160
℃のオーブンロールで５分間混練して１mmのシー
トを作つた。その後175℃で10分間加熱プレスし
て１mmのシートを作り、引張試験に供した。また
１mmのロールシートを積層して175℃で20分間加
熱プレスし10mmのシートとした。このシートをシ
ヤルピー衝撃強さの測定に供した。結果を表１に
示した。尚表１のNo.１−１〜１−13は比較例であ
る。
配合処方
ポリ塩化ビニル（平均重合度800，塩化ビニル
ホモポリマー サン・アロー化学(株)製品）
100部
含水珪酸（BET比表面積160m2／ｇ徳山曹達(株)
製品） 変量
ステアリン酸で表面処理された沈降性微細炭酸
カルシウム（白石工業(株)製 白艶華CCR）
変量
三塩基性硫酸鉛 ３部
ステアリン酸鉛 １部
The present invention relates to a polyvinyl chloride composition with excellent impact resistance. Specifically, the present invention provides a novel polyvinyl chloride composition in which polyvinyl chloride is mixed with finely divided calcium carbonate surface-treated with a fatty acid and a specified hydrous silicic acid. In addition, the polyvinyl chloride referred to in the present invention includes vinyl chloride homopolymers obtained by polymerizing vinyl chloride monomers alone, and vinyl chloride copolymers obtained by copolymerizing vinyl chloride monomers with other monomers that can be copolymerized. It is a generic term,
Also abbreviated as PVC. Further, the specific surface area of hydrated silicic acid in the present invention is expressed by the BET method unless otherwise specified. Furthermore, all "parts" indicate "parts by weight." PVC is a general-purpose resin that has been known for a long time and is used for a wide range of purposes. Various modifications of PVC have been proposed depending on the properties required in the field of use. For example, it is known to add certain inorganic substances to improve the impact resistance of PVC. A typical example is a known technique in which 30 to 50 parts of surface-treated fine calcium carbonate are added to 100 parts of PVC. However, if large amounts of inorganic substances are added in this way, the various excellent properties originally possessed by PVC will be impaired, and even if the impact resistance is improved, other properties will deteriorate, making it practically unusable. There are many fields where this is not possible. That is, one of the major challenges was the development of a technology that improves the impact resistance of PVC by adding a small amount of inorganic matter while maintaining the excellent properties inherent in PVC. The present inventors have diligently continued to develop PVC compositions that compensate for these defects. As a result, they have found that not only can impact resistance be greatly improved by adding a small amount of a specific hydrated silicic acid, but also that the above-mentioned inorganic filler It was discovered that the amount added could be extremely reduced, and the present invention was completed. That is, the present invention is a PVC composition in which 5 to 25 parts of fine calcium carbonate surface-treated with a fatty acid and 0.1 to 5 parts of hydrous silicic acid having a specific surface area of 115 to 215 m 2 /g are mixed with 100 parts of PVC. The PVC used in the present invention can be either a polyvinyl chloride homopolymer obtained by polymerizing vinyl chloride monomer alone or a vinyl chloride copolymer obtained by copolymerizing vinyl chloride monomer with another copolymerizable monomer. I can do it. Generally, the former, that is, polyvinyl chloride homopolymer, is most widely used. The latter, polyvinyl chloride copolymer, is not particularly limited and any known one can be used, but other monomers that can be copolymerized with the vinyl chloride monomer, such as ethylene, propylene, vinyl acetate, acrylic ester, acrylonitrile, etc., are generally used. A polyvinyl chloride copolymer copolymerized to 50% or less is preferably used. Further, as the calcium carbonate used in the present invention, fine calcium carbonate surface-treated with a fatty acid can be used. Generally, fine calcium carbonate treated with fatty acids such as stearic acid and palmitic acid is preferably used. The calcium carbonate is preferably fine, and in general, a powder of about 0.02 to 0.1 μm is suitable. Furthermore, the hydrated silicic acid used in the present invention is commonly referred to as white carbon, and is generally amorphous silicon dioxide produced by a wet method and having a primary particle size of about 5 to 50 μm. Although various types of hydrated silicic acid are commercially available, the hydrated silicic acid used in the present invention must have a specific surface area of 115 to 215 m 2 /g, preferably 130 to 180 m 2 /g. As is clear from the Examples and Comparative Examples described later, when the specific surface area of the hydrated silicic acid is smaller than the above lower limit, the impact resistance is not sufficiently improved. On the other hand, if it exceeds the above upper limit, it is not preferable because the impact resistance will not be sufficient. Although the principle of how the specific surface area of hydrated silicic acid works in the composition of the present invention is not clear, the present inventors have found that the aggregation ability of hydrated silicic acid or the compatibility with PVC is particularly high in fine carbonic acid surface-treated with fatty acids. It is estimated that it acts synergistically with calcium to exert the effects of the present invention. As described above, the specific surface area of the hydrated silicic acid used in the present invention has a significant effect on improving the impact resistance of PVC. Therefore, it is necessary to select the hydrated silicic acid used in the present invention so that the specific surface area falls within the above range.
It can be selected to pre-treat the hydrated silicic acid with another compound as necessary. For example, to prevent a molded product from discoloring when a PVC composition is formed, hydrated silicic acid may be pretreated with a small amount of lubricant that is usually added to PVC as a discoloration inhibitor, such as a fatty acid-based lubricant, an oil-based lubricant, or a metal soap. It is better to process it. The effects of the present invention reside in a composition that not only improves the impact resistance of PVC, but also does not reduce the excellent physical properties inherent in PVC. Therefore,
As is conventionally known, a large amount of 40 to 50 parts of inorganic substances is not added to PVC. That is, the blending ratio of fine calcium carbonate, which has been surface-treated by adding a small amount of the above-mentioned specific hydrated silicic acid, is 5 to 5 to 100 parts of PVC.
A sufficient effect can be achieved even if the amount is reduced to the range of 25 parts. If the blending ratio of the fine calcium carbonate is less than the above lower limit, the impact resistance of the resulting polyvinyl chloride composition cannot be sufficiently improved. In addition, when the blending ratio of the fine calcium carbonate exceeds the above-mentioned upper limit, the physical properties of the polyvinyl chloride composition deteriorate.
This is not preferable because it becomes impossible to maintain the excellent physical properties that PVC originally has. The most preferable blending ratio of fine calcium carbonate is 5 to 20 parts per 100 parts of PVC.
This is within the scope of the department. The proportion of the specific hydrous silicic acid used in the present invention is in the range of 0.1 to 5 parts, preferably 0.5 to 3 parts, per 100 parts of PVC. If the blending ratio of the hydrated silicic acid is less than the above lower limit, the impact resistance of the resulting polyvinyl chloride composition cannot be improved, and if it is too much, it is not only economically disadvantageous but also the impact resistance cannot be improved. This is not preferable because it is insufficient and also affects the physical properties of the polyvinyl chloride composition. As is clear from the above explanation, the polyvinyl chloride composition of the present invention not only can improve impact resistance by more than 80% compared to a composition containing 10 parts of known inorganic substances such as surface-treated fine calcium carbonate, but also Since the blending ratio of treated fine calcium carbonate can be extremely reduced, the excellent physical properties of PVC can be sufficiently maintained. The polyvinyl chloride composition of the present invention may contain other conventional additives, such as stabilizers, lubricants, anti-aging agents, colorants, etc., as required. EXAMPLES In order to explain the present invention more specifically, Examples and Comparative Examples will be described below, but the present invention is not limited to these Examples. The physical properties of the PVC compositions in the following Examples and Comparative Examples are the Charpy impact strength, tensile strength, and elongation measured in accordance with the method of JIS K 6745. Example 1 A PVC composition was prepared by mixing the following formulation using a Henschel mixer. This is the surface temperature of 160
The mixture was kneaded for 5 minutes using an oven roll at ℃ to form a 1 mm sheet. Thereafter, it was heated and pressed at 175°C for 10 minutes to produce a 1 mm sheet, which was then subjected to a tensile test. Further, 1 mm roll sheets were laminated and heated and pressed at 175°C for 20 minutes to form a 10 mm sheet. This sheet was subjected to measurement of Charpy impact strength. The results are shown in Table 1. Note that Nos. 1-1 to 1-13 in Table 1 are comparative examples. Compounding recipe Polyvinyl chloride (average degree of polymerization 800, vinyl chloride homopolymer Sun Arrow Chemical Co., Ltd. product)
100 parts hydrated silicic acid (BET specific surface area 160m 2 /g Tokuyama Soda Co., Ltd.)
Product) Precipitated fine calcium carbonate surface-treated with variable stearic acid (Shiraishi Kogyo Co., Ltd., Hakuenka CCR)
Variable tribasic lead sulfate 3 parts Lead stearate 1 part
【表】
実施例 ２
実施例１表１No.10に於いて表２に示す含水珪酸
を用いた以外は実施例１表１No.10と同様に実施し
た。その結果を表２に示す。但し表２中No.６〜８
は比較例である。[Table] Example 2 The same procedure as in Example 1 Table 1 No. 10 was carried out except that the hydrous silicic acid shown in Table 2 was used in Example 1 Table 1 No. 10. The results are shown in Table 2. However, No. 6 to 8 in Table 2
is a comparative example.
【表】
表中、No.１は徳山曹達(株)製試供品；No.３及びNo.
５は徳山曹達(株)製品；No.２，No.６及びNo.７は日本
シリカ(株)製品；No.４及びNo.８は塩野義製薬(株)製品
である。[Table] In the table, No. 1 is a sample manufactured by Tokuyama Soda Co., Ltd.; No. 3 and No.
No. 5 is a product of Tokuyama Soda Co., Ltd.; No. 2, No. 6, and No. 7 are products of Nippon Silica Co., Ltd.; and No. 4 and No. 8 are products of Shionogi & Co., Ltd.
Claims (1)
表面処理された微細炭酸カルシウム５重量部〜25
重量部及び比表面積115〜215m2／ｇの含水珪酸
0.1〜５重量部を配合したポリ塩化ビニル組成
物。1 5 to 25 parts by weight of fine calcium carbonate surface-treated with fatty acids per 100 parts by weight of polyvinyl chloride
Hydrous silicic acid with a weight part and a specific surface area of 115 to 215 m 2 /g
A polyvinyl chloride composition containing 0.1 to 5 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278079A JPS55106256A (en) | 1979-02-08 | 1979-02-08 | Polyvinyl chloride composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278079A JPS55106256A (en) | 1979-02-08 | 1979-02-08 | Polyvinyl chloride composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55106256A JPS55106256A (en) | 1980-08-14 |
| JPS6261058B2 true JPS6261058B2 (en) | 1987-12-19 |
Family
ID=11814907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1278079A Granted JPS55106256A (en) | 1979-02-08 | 1979-02-08 | Polyvinyl chloride composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55106256A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08208923A (en) * | 1995-02-03 | 1996-08-13 | Mitsubishi Plastics Ind Ltd | Polyvinyl chloride resin composition |
-
1979
- 1979-02-08 JP JP1278079A patent/JPS55106256A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55106256A (en) | 1980-08-14 |
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