Title:
フルオロポリエーテル酸またはその塩の混合物を使用するフッ素化モノマーの水性重合
Document Type and Number:
Japanese Patent JP5757862
Kind Code:
B2
Abstract:
A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts.
Inventors:
Paul Douglas Brothers
Subhas Vishnu Gangal
Gregory Allen Chapman
John Lee Howell
Adam Paul Smith
Subhas Vishnu Gangal
Gregory Allen Chapman
John Lee Howell
Adam Paul Smith
Application Number:
JP2011508695A
Publication Date:
August 05, 2015
Filing Date:
May 08, 2009
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
C08L71/00; C08F2/26; C08F2/44; C08F14/00
Domestic Patent References:
| JP2003500495A | ||||
| JP2010229164A | ||||
| JP2006513303A | ||||
| JP2007112916A |
Foreign References:
| WO2008026707A1 |
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office