Prequel™ liquid reactive size agents

Prequel liquid reactive size agents make up a family of products that are produced by custom-blending an alkenyl succinic anhydride (ASA) size with an alkenyl ketene dimer (ANKD) size in specific ratios.

Depending on the paper grade produced, different amounts of ASA size and ANKD size are used to produce the ideal Prequel product for that grade. The resulting product combines the sizing characteristics of ASA size with the cleanliness of ANKD size to deliver superior paper machine sizing. 

Commercial applications confirm that the sizing performance and cleanliness of Prequel liquid reactive size agents far surpass those of other commercially available size technologies. 

Prequel liquid reactive size agents are ideal for machines that run low first-pass retention, as well as machines that are prone to deposits and picking, and that require on-machine sizing development. 

A variety of Prequel liquid reactive size agents are available for both neutral and alkaline paper grades. To ensure optimum paper machine sizing, your Ashland sales representative will work with you to select the most appropriate Prequel product and starch for your specific application.

Explore other products:  Pulp and Papermaking Chemicals

Contact Us About:

Product Availability
  • Asia Pacific
  • Europe, Middle East, Africa, India
  • Latin America and South America
  • North America

Application InformationWant to know more about how our products are used?

Internal Sizing

Prequel liquid reactive size agents provide superior sizing performance in neutral and alkaline paper grades. Commercial applications confirm this and typically result in a number of value-added benefits.

● Reduced deposits
● Improved sheet quality
● Improved sizing
● Improved productivity

Document LibraryInformation available to download for this product.

Product Literature (publicly available)
Additional Product Literature
Safety Data Sheets

ServicesAshland offers a variety of services which complement this product.

Customer Analytical Services

Ashland Water Technologies’ Customer Analytical Services team is dedicated to helping customers address the multitude of contaminants that can negatively impact the efficiency and reliability of their water-based systems.  The team is made up of an experienced staff of analytical chemists, microbiologists and technicians and is supported by sophisticated testing equipment that provides rapid analysis and identification of contaminants beyond what may be accomplished with field-based methods.  Key services provided by the team include fluid analysis, deposit analysis, microbiological analysis and metallurgical analysis.

Papermaking Services

Continuous pilot papermaking systems are the cornerstones of Ashland Water Technologies’ Papermaking Services group. 

The primary purpose of our papermaking operations is to provide papermakers with insights and solutions to problems and opportunities

related to the effects of additives and system changes on wet-laid products and processes. 

Our facilities are equipped to conduct trials that predict commercial system performance.

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Dry Strength Enhancer, Retention Aid, Retention and Drainage Aid
Retention, Drainage
Retention and Drainage Aid
Felt/Fabric Conditioning
Deposit Inhibitor
Microbiological Control

Product SelectionA wide variety of product choices is available

Your Ashland sales representative can help you select the appropriate Prequel liquid reactive size agent, based on your papermaking system and end-use sizing requirements. This chart gives some indication of product choices available to meet specific system operating conditions.

Market InformationWant to know more about where our products are used?

Product Types or Functions
Pulp and Paper
Internal Sizing
Sizing Agent