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Mar. 27, 2026
Cellulose ethers are widely used in tile adhesive formulations to control viscosity,
water retention, suspension and workability. The right cellulose type and viscosity
grade can help formulators balance application performance and formulation requirements.
In cement-based tile adhesives, cellulose ether is mainly used to modify the fresh mortar properties.
Its key functions include:
1) Viscosity control: Helps adjust mortar consistency and application behavior.
2) Water retention: Helps the mix retain water during application and curing.
3) Suspension: Helps maintain a more uniform mortar system.
4) Workability: Supports smoother mixing and application.
These functions are closely related to tile adhesive performance. However, the required
cellulose grade depends on the formulation, substrate, application method and target properties.
Common cellulose ethers used in construction formulations include
HPMC (Hydroxypropyl Methyl Cellulose), MHEC/HEMC (Methyl Hydroxyethyl Cellulose)
and HEC (Hydroxyethyl Cellulose).
For tile adhesive, HPMC is one of the commonly considered cellulose ethers because it
can provide thickening, suspension and water retention.
The important point is that cellulose type alone does not determine performance.
Viscosity grade and the requirements of the complete formulation also need to be considered.
The viscosity of cellulose ether influences the rheology and consistency of the wet mortar.
A suitable grade can help formulators achieve the required application feel and mortar stability.
However, higher viscosity is not automatically better. Excessive viscosity may change mixing
and application behavior. The appropriate grade should therefore be selected according to
the formulation rather than simply choosing the highest-viscosity product.
Water retention is an important consideration in cement-based tile adhesive.
Cellulose ether helps retain water in the fresh mortar, which can influence workability and the
interaction between the mortar and substrate. This is particularly relevant when the formulation
needs better control of water loss during application.
Cellulose ether can also act as a suspending agent. This helps maintain a more consistent
mortar system during mixing and application.
For formulators, this means cellulose selection should be evaluated together with cement,
fillers, polymers and other additives rather than as an isolated ingredient.
A practical selection process is:
Application requirement → Performance requirement → Cellulose grade → Formulation testing
Consider the following factors:
First define the intended application, such as cement-based tile adhesive. The required cellulose
grade should match the application rather than being selected only by viscosity number.
Different HPMC viscosity grades can provide different levels of viscosity modification.
JINTEDIFU offers several HPMC grades for construction applications, including
HPMC JINT™ 200000, HPMC JINT™ 150000, HPMC JINT™ 100000 and HPMC JINT™ 75000.
Their product pages specify different viscosity ranges, so formulators can select a starting grade according to the target formulation.
For example, HPMC JINT™ 200000is a high-viscosity HPMC with a specified viscosity of
above 160,000 mPa·s and is listed by JINTEDIFU for tile adhesive applications.
HPMC JINT™ 150000 is also a high-viscosity grade, with a specified viscosity range of
120,000–180,000 mPa·s, and its recommended applications include tile adhesive.
When the formulation requires a different viscosity level, other grades should be
evaluated rather than assuming that a higher-viscosity HPMC will always provide better overall performance.
Before making a final purchasing decision, formulators can compare two or more
candidate grades under the same formulation conditions.
A basic laboratory comparison can include:
1) Keep cement, sand, polymer powder, water and other additives constant.
2) Replace only the cellulose ether grade.
3) Compare fresh mortar viscosity and workability.
4) Check water retention and application behavior.
5) Evaluate the relevant tile adhesive performance according to the required standard or internal test method.
6) Select the grade that provides the best balance for the complete formulation.
This approach is more reliable than selecting cellulose only by its nominal viscosity.
JINTEDIFU provides HPMC grades with different viscosity levels for construction material applications.
For tile adhesive formulations, HPMC JINT™ 200000 and HPMC JINT™ 150000 are directly
listed on the official product pages as recommended for tile adhesive.
Other grades may be more suitable for different construction applications. For example,
HPMC JINT™ 100000 is listed for wall putty, EIFS mortar and joint filler, while HPMC JINT™ 75000
is listed for masonry mortar, wall putty and spraying plaster.
Therefore, product selection should be based on the actual application and target
formulation performance, not simply on the highest viscosity available.
Choosing cellulose for tile adhesive is not simply a matter of selecting a high viscosity
product. The key is to match the application requirement, target performance and
cellulose grade, then verify the choice through formulation testing.
For tile adhesive manufacturers looking for HPMC, JINTEDIFU can provide different
viscosity grades for evaluation and formulation development.
Name: Molly.Wang
E-Mail:molly.wang@jtdf-rdp.
Mobile:+86 156 5045 0156（Whatsapp）
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