Copolymer, composition and method for modifying rheology
AssigneeAgency for Science, Technology and Research
InventorsDecheng Wu, Ye Liu, Jianwei Xu, Chaobin He
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Abstract
A copolymer for modifying rheology is formed of monomer units consisting essentially of at least one first monomer unit comprising a polyhedral oligomeric silsesquioxane having an ethylenically unsaturated radical; at least one second monomer unit comprising an unsaturated oligo-poly(dimethyl siloxane)(meth)acrylate; and a sufficient amount of at least one unsaturated water-soluble monomer, such that the copolymer is soluble in water. A composition may comprise an electrolyte and the copolymer. The rheology of an environment comprising an electrolyte may be modified by adding the copolymer to the environment.
Claims18
A copolymer for modifying rheology, formed of monomer units consisting essentially of:
- at least one first monomer unit comprising a polyhedral oligomeric silsesquioxane having an ethylenically unsaturated radical;
- at least one second monomer unit comprising an unsaturated oligo-poly(dimethyl siloxane)(meth)acrylate;
- and
- a sufficient amount of at least one unsaturated water-soluble monomer, such that said copolymer is soluble in water.
A composition comprising an electrolyte and a copolymer for modifying rheology, formed of monomer units consisting essentially of:
- at least one first monomer unit comprising a polyhedral oligomeric silsesquioxane having an ethylenically unsaturated radical;
- at least one second monomer unit comprising an unsaturated oligo-poly(dimethyl siloxane)(meth)acrylate;
- and
- a sufficient amount of at least one unsaturated water-soluble monomer, such that said copolymer is soluble in water.
A method of modifying the rheology of an environment comprising an electrolyte, the method comprising adding a copolymer for modifying rheology, formed of monomer units consisting essentially of:
- at least one first monomer unit comprising a polyhedral oligomeric silsesquioxane having an ethylenically unsaturated radical;
- at least one second monomer unit comprising an unsaturated oligo-poly(dimethyl siloxane)(meth)acrylate;
- and
- a sufficient amount of at least one unsaturated water-soluble monomer, such that said copolymer is soluble in water, to the environment.
Dependencies are inferred from the claim text.