Method for using hydrophobically associative polymers in preparing cellulosic fiber compositions, and cellulosic fiber compositions incorporating the hydrophobically associative polymers
OwnerHuashi T. Zhang, John C. Harringtoninventors
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Abstract
A papermaking method and a composition which utilize, as a drainage aid, a water soluble hydrophobically associative polymer which is a copolymer prepared from monomers which include a hydrophobic ethylenically unsaturated monomer, and one or more of a nonionic ethylenically unsaturated monomer, a cationic ethylenically unsaturated monomer, and an anionic ethylenically unsaturated monomer.
Claims37
A method of making a cellulosic fiber composition which comprises adding, to a cellulosic pulp slurry, a hydrophobically associative polymer comprised of reccurring units of least one hydrophobic ethylenically unsaturated monomer present in an amount from about 0.001 mole percent to about 10 mole percent, and recurring units of at least one monomer selected from a nonionic ethylenically unsaturated monomer, a cationic ethylenically unsaturated monomer, or an anionic ethylenically unsaturated monomer, with the proviso that the at least one hydrophobic ethylenically unsaturated monomer does not contain 2,4,6-triphenoethyl benzene.
A method of making a cellulosic fiber composition which comprises adding, to a cellulosic pulp slurry, a water soluble hydrophobically associative polymer comprising:
- recurring units of at least one hydrophobic ethylenically unsaturated monomer present in an amount from about 0.001 mole percent to about 10 mole percent and selected from one or more of C10-C20 alkyl esters of acrylic and methacrylic acid;
- recurring units of at least one nonionic ethylenically unsaturated monomer is selected from one or more of acrylamide, methacrylamide, N-alkylacrylamides, N,N-dialkylacrylamides, methyl acrylate, methyl methacrylate, acrylonitrile, N-vinyl methylacetamide, N-vinyl methyl formamide, vinyl acetate, or N-vinyl pyrrolidone;
- recurring units of at least one anionic ethylenically unsaturated monomer is selected from one or more of acrylic acid, methylacrylic acid, 2-acrylamido-2-methylpropane sulfonate, sulfoethyl-(meth)acrylate, vinylsulfonic acid, styrene sulfonic acid, maleic acid or the salts thereof.
A method of making a cellulosic fiber composition which comprises adding, to a cellulosic pulp slurry, a water soluble hydrophobically associative anionic polymer comprising at least one hydrophobic ethylenically unsaturated monomer selected from one or more of lauryl acrylate or lauryl methacrylate, acrylamide, and acrylic acid.
A cellulosic fiber composition comprising an aqueous slurry of cellulosic pulp and a water soluble hydrophobically associative polymer, wherein the polymer comprises:
- recurring units of at least one hydrophobic ethylenically unsaturated monomer present in an amount from about 0.001 mole percent to about 10 mole percent, and
- recurring units of at least one monomer selected from a nonionic ethylenically unsaturated monomer, a cationic ethylenically unsaturated monomer, or an anionic ethylenically unsaturated monomer,
- with the proviso that the at least one hydrophobic ethylenically unsaturated monomer does not contain 2,4,6-triphenoethyl benzene.
A cellulosic fiber composition comprising an aqueous slurry of cellulosic pulp and a water soluble hydrophobically associative polymer wherein the polymer comprises:
- recurring units of at least one hydrophobic ethylenically unsaturated monomer present in an amount from about 0.001 mole percent to about 10 mole percent and selected from one or more of C10-C20 alkyl esters of acrylic and methacrylic acid;
- recurring units of at least one nonionic ethylenically unsaturated monomer is selected from one or more of acrylamide, methacrylamide, N-alkylacrylamides, N,N-dialkylacrylamides, methyl acrylate, methyl methacrylate, acrylonitrile, N-vinyl methylacetamide, N-vinyl methyl formamide, vinyl acetate, or N-vinyl pyrrolidone;
- recurring units of at least one anionic ethylenically unsaturated monomer is selected from one or more of acrylic acid, methylacrylic acid, 2-acrylamido-2-methyl-propane sulfonate, sulfoethyl-(meth)acrylate, vinylsulfonic acid, styrene sulfonic acid, maleic acid or the salts thereof.
A cellulosic fiber composition comprising an aqueous slurry of cellulosic pulp and a water soluble hydrophobically associative polymer wherein the polymer comprises:
- recurring units of a hydrophobic ethylenically unsaturated monomer selected from one or more of lauryl acrylate or lauryl methacrylate,
- recurring units of a nonionic ethylenically unsaturated monomer is acrylamide, and
- recurring units of an anionic ethylenically unsaturated monomer is acrylic acid.
Dependencies are inferred from the claim text.