JP2010065085A5 - - Google Patents
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- JP2010065085A5 JP2010065085A5 JP2008230395A JP2008230395A JP2010065085A5 JP 2010065085 A5 JP2010065085 A5 JP 2010065085A5 JP 2008230395 A JP2008230395 A JP 2008230395A JP 2008230395 A JP2008230395 A JP 2008230395A JP 2010065085 A5 JP2010065085 A5 JP 2010065085A5
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- Prior art keywords
- pva resin
- mol
- pva
- saponification
- water
- Prior art date
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Description
また、PVA樹脂のケン化度は、得られるPVAフィルムの成形性を向上させる観点から、85モル%以上であることが好ましく、90モル%以上がより好ましく、97モル%以上がさらにより好ましく、98モル%以上が最も好ましい。PVA樹脂のケン化度が85モル%未満であると、水との親和性が上昇して、PVAフィルムの粘着性が高くなり、PVAフィルムを熱溶融成形法で連続して工業的に製造することができなくなるおそれがある。なお、PVA樹脂のケン化度とは、重合体を構成する構造単位のうちで、ケン化によってビニルアルコール単位に変換され得る単位(典型的にはビニルエステル単位)の全モル数に対して実際にビニルアルコール単位にケン化されている単位の割合(モル%)をいう。PVA樹脂のケン化度はJIS K 6726に記載されている方法に準じて測定することができる。 The degree of saponification of the PVA resin is preferably 85 mol% or more, more preferably 90 mol% or more, and even more preferably 97 mol% or more, from the viewpoint of improving the moldability of the resulting PVA film. 98 mol% or more is the most preferable. When the degree of saponification of the PVA resin is less than 85 mol%, the affinity with water is increased, the adhesiveness of the PVA film is increased, and the PVA film is continuously produced industrially by a hot melt molding method. There is a risk that it will not be possible. The saponification degree of the PVA resin is actually the total number of moles of units (typically vinyl ester units) that can be converted to vinyl alcohol units by saponification among the structural units constituting the polymer. The ratio (mol%) of the unit saponified into the vinyl alcohol unit. The degree of saponification of the PVA resin can be measured according to the method described in JIS K 6726.
この場合において、上記のようにPVA樹脂に相当量の無機塩水和物を配合することが、熱溶融成形性を高めるために重要である。また、PVA樹脂と無機塩水和物からなる配合物にさらに水を添加してもよい。PVA樹脂と無機塩水和物からなる配合物はPVA樹脂単独よりも水を多く保持でき、例えばPVA樹脂100重量部と硝酸マグネシウム・6水和物100重量部の配合物は、1〜26重量部程度の水を保持できる。そのため、この範囲で水を添加しても、後で乾燥することなくPVAフィルムを製造することができる。 In this case, it is important to add a considerable amount of inorganic salt hydrate to the PVA resin as described above in order to improve the hot melt moldability. Also, but it may also be further added water to the formulation consisting of PVA resin and an inorganic salt hydrate. A blend composed of PVA resin and inorganic salt hydrate can hold more water than PVA resin alone, for example, a blend of 100 parts by weight of PVA resin and 100 parts by weight of magnesium nitrate hexahydrate is 1 to 26 parts by weight. Can hold a certain amount of water. Therefore, even if water is added in this range, a PVA film can be produced without drying later.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008230395A JP5280136B2 (en) | 2008-09-09 | 2008-09-09 | Production method of polyvinyl alcohol film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008230395A JP5280136B2 (en) | 2008-09-09 | 2008-09-09 | Production method of polyvinyl alcohol film |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2010065085A JP2010065085A (en) | 2010-03-25 |
JP2010065085A5 true JP2010065085A5 (en) | 2011-05-06 |
JP5280136B2 JP5280136B2 (en) | 2013-09-04 |
Family
ID=42190949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008230395A Active JP5280136B2 (en) | 2008-09-09 | 2008-09-09 | Production method of polyvinyl alcohol film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5280136B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011198655A (en) | 2010-03-19 | 2011-10-06 | Yazaki Corp | Connection structure to electric wire of crimp terminal |
CN109721911A (en) * | 2017-10-30 | 2019-05-07 | 中国石油化工股份有限公司 | Conductive polyvinyl alcohol film and combinations thereof and preparation method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0596617A (en) * | 1991-10-11 | 1993-04-20 | Kureha Chem Ind Co Ltd | Polyvinyl alcohol stretch formed object |
JPH0647628B2 (en) * | 1990-11-30 | 1994-06-22 | 呉羽化学工業株式会社 | Polyvinyl alcohol melt molding |
JPH06220287A (en) * | 1993-01-22 | 1994-08-09 | Kuraray Co Ltd | Poly@(3754/24)vinyl alcohol)resin composition |
JPH08258146A (en) * | 1995-03-23 | 1996-10-08 | Unitika Chem Kk | Production of polyvinyl alcohol resin film |
JP3568327B2 (en) * | 1996-06-26 | 2004-09-22 | 日本合成化学工業株式会社 | Purging agent |
JP4601735B2 (en) * | 1997-10-21 | 2010-12-22 | 株式会社クラレ | Polyvinyl alcohol film |
JP2007231299A (en) * | 1997-10-21 | 2007-09-13 | Kuraray Co Ltd | Polyvinyl alcohol film |
JP4079723B2 (en) * | 2002-08-20 | 2008-04-23 | 日本合成化学工業株式会社 | Melt molded product |
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2008
- 2008-09-09 JP JP2008230395A patent/JP5280136B2/en active Active
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