high solids glyoxalated polyacrylamide buckman at malaysia

high solids glyoxalated polyacrylamide buckman at malaysia
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  • What is glyoxalated polyacrylamide (G-Pam)?
  • 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.
  • What is glyoxalated polyacrylamide polymer?
  • In various embodiments, the glyoxalated polyacrylamide polymer can be the reaction product of glyoxal and a base polymer comprising the acrylamide monomer and the cationic monomer in a weight ratio, ranging, for example, from about 0.01 to about 0.6:1, and, for example, from about 0.10 to about 0.30:1.
  • Why do glyoxalated polyacrylamide products have a long shelf life?
  • Commercially available glyoxalated polyacrylamide products contain a large number of un-reacted amide groups, which can react with glyoxal under storage, leading to the continuing cross-linking of the base polyacrylamide molecules and shortened product shelf life.
  • Is glyoxalated polyacrylamide a cationic monomer?
  • The exemplified glyoxalated polyacrylamide products in U.S. Pat. No. 4,605,702 have a concentration of about 20% by weight cationic monomer, but were indicated as being used in much higher dosages to compare wet strength properties with exemplified products in U.S. Pat. No. 3,556,932.