Formulation for size press applications
Paper treating compositions and methods of using the same are disclosed herein. The paper treating compositions of the present disclosure may include a strength agent and a surfactant or a sizing agent and a surfactant. The compositions and methods can be used to improve sizing and paper strength, especially, for example in spray size press applications.
1. A method of treating paper, comprising:
applying a composition onto a paper press roll to form a coated paper press roll, the composition comprising a strength agent, a sizing agent, and a surfactant; and
contacting paper with the coated paper press roll to form a treated paper,
wherein the treated paper has a Cobb value equal to or less than a Cobb value of paper treated with the strength agent and the sizing agent but not with the surfactant;
wherein the strength agent is about 1 wt % to about 10 wt % of the composition;
wherein the surfactant is about 0.005 wt % to about 0.5 wt % of the composition; and
wherein the surfactant is an alkoxylated ethylenediamine, or wherein the surfactant comprises formula I:
wherein
n is an integer ranging from 0 to 100;
m is an integer ranging from 0 to 100;
x is an integer ranging from 1 to 3;
y is an integer ranging from 0 to 5; and
R 1 is hydrogen, halogen, C 1-10 alkyl, phenyl, or cycloalkyl.
2. The method of claim 1 , wherein the composition is sprayed onto the paper press roll.
3. The method of claim 1 , wherein the surfactant is
4. The method of claim 1 , wherein the treated paper has a Cobb value at least about 10 percent less than the Cobb value of a paper treated with the strength agent and the sizing agent but not with the surfactant.
5. The method of claim 1 , wherein the composition is an aqueous solution.
6. The method of claim 1 , wherein the surfactant is about 0.01 wt % to about 0.03 wt % of the composition.
7. A method of treating paper, comprising:
applying a composition onto a paper press roll to form a coated paper press roll, the composition comprising a strength agent and a surfactant; and
contacting paper with the coated paper press roll to form a treated paper,
wherein the treated paper has a tensile strength value greater than a tensile strength value of paper treated with the strength agent but not with the surfactant;
wherein the strength agent is about 1 wt % to about 10 wt % of the composition;
wherein the surfactant is about 0.005 wt % to about 0.5 wt % of the composition; and
wherein the surfactant is an alkoxylated ethylenediamine, or wherein the surfactant comprises formula I:
wherein
n is an integer ranging from 0 to 100;
m is an integer ranging from 0 to 100;
x is an integer ranging from 1 to 3;
y is an integer ranging from 0 to 5; and
R 1 is hydrogen, halogen, C 1-10 alkyl, phenyl, or cycloalkyl.