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Water-soluble graft copolymers of starch-acrylamide and uses therefor

Patent ·
OSTI ID:7259955
; ; ;
Graft copolymers having starch as the central chain with grafted side chains of acrylamide or acrylamide-acrylic acid, and a process for preparation of such copolymers in the presence of Ce[sup +4] or other redox initiators are disclosed. These copolymers are employed in preparing highly viscous aqueous solutions that are particularly useful in oil recovery from subterranean wells. 2 figs.
Research Organization:
University of Florida
DOE Contract Number:
AS05-78ER05947
Assignee:
Univ. of Florida, Tallahassee, FL (United States)
Patent Number(s):
US 4400496; A
Application Number:
PPN: US 6-188999
OSTI ID:
7259955
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ACRYLAMIDE
ACRYLIC ACID
AMIDES
CARBOHYDRATES
CARBOXYLIC ACIDS
CERIUM COMPOUNDS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GRAFT POLYMERS
MONOCARBOXYLIC ACIDS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PETROLEUM
POLYMERS
POLYSACCHARIDES
RARE EARTH COMPOUNDS
REAGENTS
SACCHARIDES
STARCH
SYNTHESIS
VISCOSITY
WELLS