Title:
フッ化ビニル重合およびフッ化ビニルポリマーの水分散液
Document Type and Number:
Japanese Patent JP2014501803
Kind Code:
A
Abstract:
A process for producing vinyl fluoride polymer comprising polymerizing vinyl fluoride in an aqueous polymerization medium containing initiator and halogen-free surfactant with a critical micelle concentration of less than about 0.05 weight percent at 25° C. The halogen-free surfactant is present in the aqueous polymerization medium in an amount less than about 0.1 weight percent based on the weight of the aqueous polymerization medium. The aqueous polymerization medium is essentially free of halogen-containing surfactant. An aqueous dispersion comprising vinyl fluoride polymer particles present in a range of from about 5 to about 40 weight percent based on the weight of the aqueous phase, wherein said vinyl fluoride polymer particles have a Dv(50) of less than about 20 microns, and halogen-free surfactant, wherein said halogen-free surfactant is present in said aqueous dispersion in an amount less than 0.1 weight percent based on the weight of the aqueous phase.
Inventors:
Ronald Earl Uchsold
Application Number:
JP2013538759A
Publication Date:
January 23, 2014
Filing Date:
October 20, 2011
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
C08F2/30; C08F14/20; C09D5/02; C09D7/12; C09D127/14; C09D171/02
Domestic Patent References:
| JPS4928669B1 | 1974-07-29 | |||
| JP2010512430A | 2010-04-22 |
Foreign References:
| GB905879A | 1962-09-12 | |||
| GB1069364A | 1967-05-17 | |||
| GB1229156A | 1971-04-21 |
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office