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US 12,065,785 B2Granted
Ash retention additive and methods of using the same
AssigneePolymer Ventures, Inc.
InventorChristopher B. Murphy
Life of this patent
Estimating the term…
Abstract
Provided herein are additives for paper compositions comprising poly(ethylene oxide) (PEO) and polyacrylamide polymer that are capable of increasing the ash retention of the paper composition. Also provided are methods of making a paper composition using the additives of the disclosure.
Claims12
A kit for preparing an additive for a paper composition, comprising:
- a dispersion comprising poly(ethylene oxide) (PEO);
- an emulsion comprising a polyacrylamide polymer;
- and,
- instructions to blend the dispersion and the emulsion together such that, when the dispersion and the emulsion are blended together to provide the additive:
- the PEO is present in an amount of about 1 wt % to about 15 wt %, based on the total weight of the additive;
- the polyacrylamide polymer is present in an amount of about 20 wt % to 40 wt %, based on the total weight of the additive;
- and
- the PEO and the polyacrylamide polymer are present in a ratio of about 1:3 to about 1:15 by weight;
- wherein the additive is capable of increasing ash retention of a paper composition by at least about 25% relative to ash retention of a paper composition having an additive comprising PEO alone, an additive comprising polyacrylamide polymer alone, or the separate addition of both an additive comprising PEO alone and an additive comprising polyacrylamide polymer alone.
6 more elements
A kit for preparing an additive for a paper composition, comprising:
- a dispersion comprising poly(ethylene oxide) (PEO);
- an emulsion comprising a polyacrylamide polymer;
- instructions to blend the dispersion and the emulsion together such that, when the dispersion and the emulsion are blended together to provide an additive, the ratio of the PEO to the polyacrylamide polymer is about 1:3 to about 1:40, and
- instructions to add the additive to a paper composition in an amount of at least about 1.7 lb/ton (PPT), wherein when added to the paper composition in an amount of at least about 1.7 lb/ton (PPT), the additive is capable of increasing ash retention of the paper composition by at least about 25% relative to ash retention of a paper composition having an additive comprising the PEO alone, an additive comprising the polyacrylamide polymer alone, or the separate addition of both an additive comprising the PEO alone and an additive comprising the polyacrylamide polymer alone.
1 more element
A kit for preparing an additive for a paper composition, comprising:
- a dispersion comprising poly(ethylene oxide) (PEO);
- and,
- an emulsion comprising a polyacrylamide polymer;
- wherein when the dispersion and the emulsion are blended together to provide the additive:
- the PEO is present in an amount of about 1 wt % to about 15 wt %, based on the total weight of the additive;
- the polyacrylamide polymer is present in an amount of about 20 wt % to 40 wt %, based on the total weight of the additive;
- the PEO and the polyacrylamide polymer are present in a ratio of about 1:3 to about 1:15 by weight, and
- wherein at least one of the dispersion and the emulsion comprises a salt selected from the group consisting of sodium formate, potassium formate, sodium hydroxide, potassium hydroxide, sodium citrate, potassium citrate, sodium acetate, potassium.
5 more elements
Dependencies are inferred from the claim text.