Chargeable core/sheath-structured fiber, nonwoven fabric obtained from said fiber, composite nonwoven fabric, nonwoven fabric processed article, and method for producing nonwoven fabric processed article
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 24, 2023
Grant Date -
Apr 20, 2023
app pub date -
Mar 18, 2021
filing date -
Mar 30, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
The present invention provides a chargeable sheath/core-structured fiber that contains a polypropylene-based resin as a main resin, wherein the sheath part contains (a) a carboxylic anhydride-modified polyolefin and (b) at least one antioxidant selected from the group consisting of a combined antioxidant a phenolic antioxidant and a phosphorus-based antioxidant, and sulfur-based antioxidants; and (c) an oil containing a polyoxyalkylene alkyl ether represented by the general formula (I) as a finishing oil is deposited on the outer surface of the sheath part, and that can satisfy heat resistance and charge retainability. (In the formula, R1 represents a saturated or unsaturated aliphatic hydrocarbon group having 10 to 30 carbon atoms; R2 represents a hydrogen atom or a methyl group; and k is an integer of 1 to 4.)
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B1 | JP6754021 | Mar 30, 2020 |
| CN | B | CN115516143 | Mar 18, 2021 |
| WO | A1 | WO2021200201 | Mar 18, 2021 |
| TW | B | TWI758141 | Mar 25, 2021 |
International Classification(s)
- 2021 Application Filing Year
- D06M Class
- 298 Applications Filed
- 87 Patents Issued To-Date
- 29.20 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D06M Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
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