Lubrajel* BA hydrogel

Lubrajel BA hydrogel is a novel solution for mouth moisturization that provides a great formulation option for dry mouth. Lubrajel BA hydrogel is a clathrate of glyceryl acrylate and glyceryl polyacrylate that encloses water molecules via hydrogen bonding and Van der Waals forces. Since it binds moisture and is a highly viscous gel, Lubrajel BA hydrogel is an ideal ingredient to provide moisture to the mouth.

Dry mouth is the term used to describe a lack of moisture in the mouth. With an increase in medication use and the aging of the world’s population, a significant rise in dry mouth is expected in the coming years. When formulated in mouth rinses, sprays or gels, Lubrajel BA hydrogel helps provide relief from the feeling of dry mouth.

Oral moisturizing formulations containing Lubrajel BA hydrogel exhibit shear-thinning properties like natural saliva. In addition, based on mucoadhesion studies, Lubrajel BA hydrogel could potentially deliver longer-lasting mouth moisture benefits so that the frequency of reapplication could be reduced.

*Lubrajel is a registered trademark of United-Guardian, Inc.

Application Information




Mouth moisturizers

Recommended for mouth rinses, sprays and gels

  • Provides hydration
  • Enhances mucoadhesion to help formulations hold moisture in the mouth
  • Adds shear-thinning characteristics, just like natural saliva
  • Provides cohesive rheological properties
  • Supplies lubricity for a pleasant saliva-like mouth feel

Document Library

Product Literature(publicly available)

Additional Product Literature

Safety Data Sheets

Technical Information

Typical properties and characteristics of Lubrajel BA hydrogel

Physical form   Colorless gel
Vicscosity (cP) 20 percent solution1   100,000
Vicscosity (cP) as supplied2   1,000,000
Aqueous solubility   Complete
Chemical name   Water, glycerin, butylene glycol, sodium polyacrylate, polyacrylic acid, benzoic acid, EDTA
Approximate water content   50 percent
pH (as supplied)   ~5.0

1Brookfield viscosity (DV-II) of 20 percent solution at 20-24°C, #6/2.5 rpm.
2Brookfield viscosity (DV-II) as is at 20-25°C, #7/1 rpm.

Theoretical Structure of Glyceryl Acrylate/Acrylic Acid Copolymer
Theoretical structure of glyceryl acrylate/acrylic acid copolymer

Market Information



Product Types or Functions

Personal Care
Mouth moisturizers
Gels, Rinses, Sprays