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HEMC FOR Dry mix mortars

1. Improve the uniformity, make the mortar easier to apply, and improve the anti-sag ability. Increased mobility and pumpability to improve efficiency.

2. Methyl hydroxyethyl cellulose has high water retention, it can prolong the working time of mortar, improve working efficiency, and help mortar to form high mechanical strength during solidification.

3. Air infiltration is controlled to eliminate micro-cracks in the coating, resulting in an ideally smooth surface.

4.Exterior Insulation and Finish Systems (EIFS)

Bond strength: HEMC/MHEC can provide the greatest degree of high adhesive bond strength of mortar;

Performance: During using of distribution method, the mortar added with HEMC/MHEC has the right consistency, nonsagging.

Making the mortar easy to work continuously in the applications;

Water retention: Can easily wet the wall insulation, easy to paste and make other additional materials achieve the best effect;

Absorbent: Can minimize the air-entrance volume and decrease water absorbing of the mortar.

5. Joint filler

Workability: HEMC/MHEC

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Product Details

Methyl Hydroxyethyl cellulose MELLUTEL is a odorless, odorless, non-toxic white powder that can be dissolved in cold water to form a transparent viscous solution. It has the characteristics of thickening, adhesion, dispersion, emulsification, film formation, suspension, adsorption, gelation, surface activity, water retention and colloid protection. Aqueous solutions can be used as colloidal protectants, emulsifiers and dispersants due to their surface active properties. Hydroxyethyl methyl cellulose aqueous solution has good hydrophilicity, which is a highly efficient water-retaining agent.

Structural formula

HPMC化学式.png

(n～2)/2

OR=-OH、-OCH3、-[OCH2CH(CH3)]nOH or-[OCH2CH(CH3)]OCH3

HEMC Main application

Hydroxyethyl methyl cellulose (HEMC) is a non-ionic cellulose mixed ether made from cotton and wood through alkalization, ethylene oxide and methyl chloride etherification. HEMC is widely used in water-based latex coatings, construction and building materials, printing ink, oil drilling and other fields. Its properties are similar to HPMC, but the presence of hydroxyethyl makes HEMC more soluble in water, the solution is more compatible with salt, and has a higher condensation temperature.

1. in the pharmaceutical field, hydrophilic gel framework materials and pharmaceutical excipients for the preparation of sustained-release preparations are widely used, including oral tablets, suspensions, local preparations, porogens and coating agents.

2. in the field of food processing, it is used for bonding, emulsification, film-forming, thickening, suspension aid, dispersion, water retaining agent, etc.

3. in the field of daily chemical industry, it is used as an additive for toothpaste, cosmetics, detergent, etc.

4. in the field of building materials, it is used as a gelling agent and water retaining agent for cement, gypsum and lime, and is an excellent admixture for powder building materials.

Specification

Type Item	HEMC
Viscosity mPa.s	4000,6000,7000, 8000,10000, 20000, 30000, 40000, 60000, 70000, 100000, 150000, 200000
Gel temperature ℃	70.0-90.0
pH	5.0-9.0
Loss on drying %	≤5.0
Burning residue %	≤5.0
Bulk density g/L	350～420
Methoxy %	19.0～24.0
Hydroxyethoxy %	7.0～10.0