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Title:
POLYESTER-BASED MONOFILAMENT FOR TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2021/033294
Kind Code:
A1
Abstract:
Provided is a polyester-based monofilament for a toothbrush, the monofilament having exceptional flexibility (usage feel), durability (bristle breaking resistance), and restoration properties (bristle opening resistance). The present invention relates to: a polyester-based monofilament for a toothbrush, the monofilament being characterized in that polytrimethylene terephthalate (PTT) and polybutylene terephthalate (PBT) are mixed at a proportion ranging from 85/15 to 65/35 in terms of weight ratio, and the shrinkage in boiling water is less than 1.0%; and a toothbrush in which the aforementioned polyester-based monofilament for a toothbrush is used in an erected bristle section.

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Inventors:
MORITA SHIGERU (JP)
SAITO AKIHIRO (JP)
SAKAMOTO HARUKA (JP)
Application Number:
JP2019/032664
Publication Date:
February 25, 2021
Filing Date:
August 21, 2019
Export Citation:
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Assignee:
ASAHI KASEI ADVANCE CORP (JP)
International Classes:
A61C17/22; A46D1/00; D01F6/92
Domestic Patent References:
WO2005039355A12005-05-06
WO2001075200A12001-10-11
Foreign References:
JP2017140131A2017-08-17
JP2006122275A2006-05-18
US20100101038A12010-04-29
JP2019136348A2019-08-22
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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