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US 11,053,610 B2Granted
Readily fibrillative polyvinyl alcohol fiber and method for manufacturing same
AssigneeKuraray Co., Ltd.
InventorsMasami Kawakami, Toshiaki Kobayashi, Hiroyuki Kawai, Shinichi Takemoto, Tomohiro Hayakawa
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Abstract
A polyvinyl alcohol fiber that can easily be fibrillated at a low manufacture cost is provided. The readily fibrillative polyvinyl alcohol fiber contains a polyalkylene oxide in addition to a polyvinyl alcohol. A mass ratio of the polyalkylene oxide ranges from 3 to 40% relative to the total mass of the polyvinyl alcohol and the polyalkylene oxide. A method for manufacturing the polyvinyl alcohol fiber is also provided.
Claims19
A fibrillative polyvinyl alcohol fiber, comprising:
- a polyalkylene oxide and a polyvinyl alcohol,
- wherein a weight average molecular weight of the polyalkylene oxide is from 50,000 to 200,000, and
- wherein a mass ratio of the polyalkylene oxide is from 3 to 40% relative to a total amount of the polyvinyl alcohol and the polyalkylene oxide.
Dependencies are inferred from the claim text.