Phenolic compound/polyethylene oxide retention system
AssigneeHercules Incorporated
InventorElliott Echt
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Abstract
A paper-making furnish, comprising poly(paravinyl phenol), also known as poly(hydroxy styrene), in admixture with polyethylene oxide, and a process for retaining fine particles in paper-making comprising adding poly(paravinyl phenol) and polyethylene oxide to a paper-making furnish, are disclosed.
Claims45
A paper-making furnish comprising, as retention agents for retaining fine particles, poly(paravinyl phenol) having a molecular weight of over 1500 in admixture with a soluble poly(alkylene oxide) having a molecular weight of over one million, wherein the weight ratio of poly(paravinyl phenol) to poly(alkylene oxide) is from about 0.5:1 to about 10:1.
A process for retaining fine particles in paper-making comprising adding poly(paravinyl phenol having a molecular weight of over 1500 and a poly(alkylene oxide) having a molecular weight of over one million to a paper-making furnish, wherein the weight ratio of poly(paravinyl phenol) to poly(alkylene oxide) is from about 0.5:1 to about 10:1.
Paper made by a process that includes the step of adding poly(paravinyl phenol) having a molecular weight of over 1500 and soluble poly(alkylene oxide) having a molecular weight of over one million to the paper-making furnish, wherein the weight ratio of poly(paravinyl phenol) to poly(alkylene oxide) is from about 0.5:1 to about 10:1.
Dependencies are inferred from the claim text.