PROCESS FOR THE PRODUCTION OF GRAFT COPOLYMERS

Patent · Wed Jul 05 00:00:00 EDT 1961

OSTI ID:4034384

A process for the production of articles of grafted polyvinyl alcohol is described. The process consists of impregnating a shaped article of polyvinyl alcohol with an aqueous solution of a radical-forming catalyst and subjecting the article under radical-forming conditions to the action of an ethylenically unsatarated monomer in the liquid or vapor phase. The catalyst medium is a mixture of water and glycol and the cdtalyst is a water-soluble per-salt or a redox system. Grafting is carried out at upwards of 40 deg C, wherein a hydrophobic monomer is used for grafting and grafting is continued until the article is completely insoluble in water. The monomer is acrylonitrile, vinyl chloride, methyl methacrylate, or vinyl acetate. (N.W.R.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-023437
• OSTI ID: 4034384
• Report Number(s): GB 872132
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-61
• Country of Publication: United Kingdom
• Language: English

Related Subjects

CHEMISTRY
ACRYLIC ACID
ACRYLONITRILES
ALCOHOLS
CATALYSIS
CYANIDES
FREE RADICALS
GRAFTS
IMPREGNATION
METHACRYLIC ACID
NITRILES
POLYMERS
PRODUCTION
REDOX PROCESS
SOLUTIONS
SOLVENT EXTRACTION
TRANSPLANTS
VAPORS
VINYL RADICALS
WATER