Application of sodium carboxymethyl cellulose - coating industry

Sodium carboxymethyl cellulose (CMC) acts as a thickener, stabilizer, and water retention agent in coatings,  significantly optimizing and enhancing the performance of coatings.

Water-based paint: thickening and stabilization

Adding CMC to latex paint can increase the viscosity of the coating, prevent the sedimentation of pigments and fillers,  and improve the leveling property during application.

Putty powder: water retention and adhesion

Adding CMC to interior wall putty powder enhances water retention, prolongs open time,  facilitates easier scraping of the putty, reduces cracking after drying, and improves bonding strength.

Ceramic tile adhesive: Improve workability

Adding CMC to tile adhesive optimizes its sag resistance and flexibility;  it is easier to adjust the position during application, and the bond is firm after curing.

Low-cost paint formula

Substituting a portion of HEC (hydroxyethyl cellulose) or HPMC (hydroxypropyl methyl cellulose) with CMC can  significantly reduce raw material costs by 20% to 30% while maintaining the basic performance of the coating unaffected

Special functional coating

Adding CMC to fire-resistant coatings can delay water evaporation and promote uniform distribution of flame retardants;  the coating becomes denser, enhancing fire resistance.

Comparison of alternative solutions

In the comparison between CMC and HPMC,  each has its own advantages and disadvantages. CMC has the advantage of lower cost,  but its water resistance is relatively poor;  whereas HPMC is suitable for scenarios where high weather resistance is required.