Blends of glyoxalated polyacrylamides and paper
A composition for enhancing the wet strength of paper comprising a blend of two components: (a) a polymeric paper strengthening agent; and (b) a stabilized glyoxalated polyacrylamide in a concentration of between about 40% and about 99% by weight of the two components, wherein the stabilized glyoxalated polyacrylamide is prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide
A composition for enhancing the wet strength of paper comprising a blend of two components: (a) a polymeric paper strengthening agent; and (b) a stabilized glyoxalated polyacrylamide in a concentration of between about 1% and about 35% by weight of the two components, wherein the stabilized glyoxalated polyacrylamide is prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide
US7897013B2 - Blends of glyoxalated polyacrylamides
Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent.
US7488403B2 (en) * 2004-08-17: 2009-02-10: Cornel Hagiopol: Blends of glyoxalated polyacrylamides and paper strengthening agents US7034087B2 (en) * 2004-08-17: 2006-04-25: Georgia-Pacific Resins, Inc. Aldehyde scavengers for preparing temporary wet strength resins with longer shelf life US7897013B2 (en)
(12) United States Patent (10) Patent No.: US 8,435,382 B2
Glyoxalated polyacrylamide (G-PAM) is used in a variety of paper grades to provide paper with dry and temporary wet strength. For example, glyoxalated polyacrylamide increases the initial wet strength of many household tissues which come in contact with water in use. Glyoxalated polyacrylamide is
Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent.
US8435382B2 - High solids glyoxalated polyacrylamide
In various embodiments, the amount of glyoxalated polyacrylamide polymer added, on a solids basis, to paper can be from about 0.5 to about 12 pounds (lb.) polymer/ton dry fiber, or, for example, from about 3 to about 10 lb. polymer/ton dry fiber. The paper can comprise, for example, a cellulosic fibrous non-woven web.
Polyacrylamides are high molecular weight water soluble or swellable polymers obtained from water soluble monomers (acrylamide, acrylic acid, adam-methyl chloride, etc.) Their main uses are as flocculants in water treatment and mineral processing ; drainage and retention aids in the paper industry; thickening agents etc.
US Patent for Modified of improving dry strength and/or
Modified of improving dry strength and/or drainage of a paper or paperboard Mar 2, 2017 - Solenis Technologies, L.P. A method of improving dry strength and/or drainage of a paper or paperboard by adding to a paper or paperboard furnish, a graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer
Paper having heterogeneous z-directional distribution of a cationic Polyacrylamide (PAM) as a dry strength resin was prepared using an external coating method by which PAM was applied to dried
Polymerized unsaturated compound patent application class
20100147478. COATING COMPOSITIONS COMPRISING ALKYL KETENE DIMERS AND ALKYL SUCCINIC ANHYDRIDES FOR USE IN PAPER MAKING- Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition.
The other component is a stabilized glyoxalated polyacrylamide prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide; (2) adding an acid to the first reaction mixture to form a second reaction mixture having a reduced pH and
- What is sodium dichloroisocyanurate?
- ?
- ) Sodium dichloroisocyanurate (INN: sodium troclosene, troclosenum natricum or NaDCC or SDIC) is a chemical compound widely used as a cleansing agent and disinfectant. It is a colorless, water-soluble solid, produced as a result of reaction of cyanuric acid with chlorine.
- Can Sodium dichloroisocyanurate be used to disinfect drinkingwater?
- Where sodium dichloroisocyanurate is used for the disinfection of drinking‐water, exposure will be to both the chlorinated species and residual cyanuric acid. The concentrations will relate directly to the quantities added to achieve adequate disinfection.
- Is sodium dichloroisocyanurate toxic?
- Both sodium dichloroisocyanurate and sodium cyanurate have low acute oral toxicity. Sodium cyanurate does not induce any genotoxic, carcinogenic or teratogenic efects.
- How does sodium dichloroisocyanurate react with hydrogen peroxide?
- The reactions between dichloroisocyanurate salts (Na, K, Li, Ba, Ca) and transition metal salts (Ni, Cu, Cd) are described in patent US 3,055,889. The overall reaction is: Sodium dichloroisocyanurate reacts with concentrated (130 vol, 35%) hydrogen peroxide to create singlet oxygen which emits red light upon decomposition .
