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US 9,167,830 B2Granted
Substituted cellulose acetates and uses thereof
AssigneeCelanese Acetate LLC
InventorsMichael T. Combs, Thomas S. Garrett
Life of this patent
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Abstract
The present invention relates to substituted cellulose acetates and methods of use thereof. One embodiment of the present invention provides a drilling fluid having a base fluid and a viscosifier having a substituted cellulose acetate having a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group of sulfur, phosphorus, boron, and chlorine; where the nonmetal is present in at least about 0.01% by weight of the substituted cellulose acetate.
Claims20
A paint composition comprising:
- a pigment;
- and
- a stabilizing film forming agent that comprises a substituted cellulose acetate comprising an acetate substituent and a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group consisting of:
- sulfur, phosphorus, boron, and chlorine;
- wherein a degree of polar substituent substitution is about 0.005 to about 0.02;
- and wherein a degree of acetate substitution is greater than the degree of polar substituent substitution.
3 more elements
A method comprising:
- providing a paint comprising:
- a pigment;
- and
- a stabilizing film forming agent that comprises a substituted cellulose acetate comprising an acetate substituent and a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group consisting of:
- sulfur, phosphorus, boron, and chlorine;
- wherein a degree of polar substituent substitution is about 0.005 to about 0.02;
- and wherein a degree of acetate substitution is greater than the degree of polar substituent substitution;
- and
- coating a surface with the paint.
6 more elements
A paint composition comprising:
- a pigment;
- and
- a stabilizing film forming agent that comprises a substituted cellulose acetate comprising an acetate substituent and a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group consisting of:
- sulfur, phosphorus, boron, and chlorine;
- wherein a degree of polar substituent substitution is about 0.005 to about 0.02;
- and wherein a degree of acetate substitution is about 0.4 to 3.
3 more elements
Dependencies are inferred from the claim text.