TGbind Series - Dry Strength Agent

Dry strength is an inherent structural property of a paper sheet which is due primarily to the development of fiber to fiber bonds during consolidation and drying of the fiber network. Paper strength is dependent on the strength of individual fibers, the strength of interfiber bonds, the number of bonds (bonded area) and the distribution of fibers and bonds (formation). Paper strength additives may bring about improvement in one or more of the above factors, although it may be assumed that they are unlikely to affect the strength of single fibers.

Certain chemical additives, when introduced into the furnish prior to paper formation, constitute an alternative method to beating for generating paper strength, whilst maintaining other important property combinations. Dry strength additives are usually water soluble, hydrophilic natural and synthetic polymers. The commercially most important are cationic starch and acrylamide polymers.

TGbind series are polyacrylamide derivatives (PAMs). The PAMs are one of the oldest and still most commonly used additives today applied for strengthening fiber bonding in paper. Depending on molecular weight and the nature and amount of charge-bearing copolymers or substituents, they have found many and varied applications (Fig. 1). The practical molecular weight range is between 100,000 and 500,000 daltons. Anionic and cationic substitution is typically between 5 and 20 mole % with respect to the amide group.

TGchem has two dry-strength additives (TGbind series) as follow:

• TGbind-KSK : Cationic polyacrylamides
• TGbind-TAP : Anionic polyacrylamides.
• TGbind-AM : Amphoteric polyacrylamides.

Fig. 1. TGbind series, the dry-strength additives of TGchem, are mainly divided into two categories: cationic (KSK) and anionic (TAP) polyacrylamide copolymers according to the charge-carrying group.

1. Typical Properties

2. Packaging

3. Heath and Safety

Safety glasses and gloves are recommended to handle the products. If your eyes are exposed to the products, rinse immediately with plenty of fresh water for at least 10 minutes.

These data are given for information only. They do not constitute a specification and no liability is assumed, nor freedom from any existing patents.
We do not guarantee the applicability or the accuracy of this information and the suitability of our products in any given situation, since we cannot anticipate the many different conditions under which our products may be used.