Title:
NOVEL AMPHIPHILIC GRAFT COPOLYMERS
Document Type and Number:
Japanese Patent JP2019196498
Kind Code:
A
Abstract:
To provide a process for preparing amphiphilic polyethylene-based copolymers.SOLUTION: The process comprises a. obtaining an ethylene vinyl acetate copolymer having 9.3 to 25 weight percent of vinyl acetate; b. reacting the ethylene vinyl acetate copolymer with potassium methoxide to prepare a mixture of polymeric potassium alkoxide and methyl acetate co-products; c. performing distillation on the mixture of polymeric potassium alkoxide and methyl acetate co-products to remove the methyl acetate co-products; d. performing ethylene oxide ring-opening polymerization on the polymeric potassium alkoxide using 1,3 propane sultone; e. removing aliquots during the ethylene oxide ring-opening polymerization to allow systemic variation in the degree of polymerization of ethylene oxide side chains; and f. collecting an amphiphilic polyethylene based graft copolymer generated.SELECTED DRAWING: Figure 1
Inventors:
THERESA HERMEL-DAVIDOCK
EDWARD BRYAN COUGHLIN
EDWARD BRYAN COUGHLIN
Application Number:
JP2019138013A
Publication Date:
November 14, 2019
Filing Date:
July 26, 2019
Export Citation:
Assignee:
BECTON DICKINSON CO
UNIV MASSACHUSETTS
UNIV MASSACHUSETTS
International Classes:
C08G65/26; C08G65/10; C08G65/30
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office