Title:
MOLDED ARTICLE FOR PLUMBING AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/161937
Kind Code:
A1
Abstract:
Provided is a molded article for plumbing which is capable of suppressing the molecular cleavage of polyamides due to the generation of radicals caused by chlorine-based oxidative substances included in tap water for sterilization, and thus is capable of suppressing a reduction in the performance of the molded article. This molded article for plumbing comprises a resin composition that contains 10-200 parts by mass of an inorganic filler (B) and 0.1-2.0 parts by mass of a phenol-based antioxidant (C) with respect to 100 parts by mass of a semi-aromatic polyamide (A), wherein the semi-aromatic polyamide (A) includes a dicarboxylic acid unit in which an aromatic dicarboxylic acid unit is the main component, and a diamine unit in which an aliphatic diamine unit is the main component, and the phenolic antioxidant (C) has a structure represented by formula (1) in the molecule. (In formula (1), ** indicates a bond.)
Inventors:
OYA NOBUHIRO (JP)
Application Number:
PCT/JP2021/004474
Publication Date:
August 19, 2021
Filing Date:
February 08, 2021
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
E03D9/08; A47K3/28; C08K3/013; C08K5/00; C08L77/06; E03C1/02; E03C1/042
Foreign References:
| JP2008266434A | 2008-11-06 | |||
| JP2017193703A | 2017-10-26 | |||
| JP2015196836A | 2015-11-09 | |||
| JP2007246563A | 2007-09-27 | |||
| JPS5575437A | 1980-06-06 |
Other References:
AYUMI TAKIGUCHI , AYA TSUDA , SAORI YOSHIKAWA , DAISUKE NAKAJIMA , SUMIO GOTO , SUKEO ONODERA: "Reactions of antioxidants BHA and BHT with chlorine in aqueous solutions and mutagenic assay of the reaction products", JOURNAL OF ENVIRONMENTAL CHEMISTRY, vol. 16, no. 2, 16 June 2006 (2006-06-16), pages 219 - 228, XP055847862, ISSN: 0917-2408, DOI: 10.5985/jec.16.219
See also references of EP 4105399A4
See also references of EP 4105399A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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