Polyacrylamide glyoxylated

These are prepared from a polyacrylamide (which may be cationic) and glyoxal (Figure 7.30). The glyoxylated polyacrylamide may then participate in homo- or hetero-cross-linking (Figures 7.31 and 7.32). 

Figure 7.32 Heterocross-linking of glyoxylated polyacrylamides with cellulose.

Since then, the number of products available has grown and become more economically competitive with cationic starch. Since the last edition of this book new chemistry has become available to the industry. Both glyoxylated polyacrylamides and polyvinylamines are now being used. Chapter 7 provides up-to-date information on these and other products as well as case histories and troubleshooting tips. 

In recent years, there has been a growth in the interest in synthetic dry strength agents and new approaches have been developed, including the use of glyoxylated polyacrylamides and polyvinylamine chemistry. In some cases these polymeric... 

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