KimaCell® HPMC MP75M is hydroxypropyl methyl cellulose used in wall putty and skim coat.
Generally speaking, the higher the viscosity, the better the water retention effect. However, the higher the viscosity and the higher the molecular weight of HPMC, the corresponding decrease in its solubility will have a negative impact on the strength and construction performance of the mortar. The higher the viscosity, the more obvious the thickening effect on the mortar, but it is not directly proportional. The higher the viscosity, the more viscous the wet mortar will be, that is, during construction, it is manifested as sticking to the scraper and high adhesion to the substrate. But it is not helpful to increase the structural strength of the wet mortar itself. During construction, the anti-sag performance is not obvious. On the contrary, some medium and low viscosity but modified methyl cellulose ethers have excellent performance in improving the structural strength of wet mortar. The greater the amount of cellulose ether added to the wall putty, the better the water retention performance, and the higher the viscosity, the better the water retention performance.
|Chemical name||Hydroxypropyl Methyl Cellulose|
|Synonym||Cellulose ether; Hypromellose; Cellulose, 2-hydroxypropyl methyl ether; Hydroxypropyl methyl cellulose; HPMC; MHPC|
|Product Grade||HPMC MP75M|
|Solubility||Water Soluble Cellulose Ether|
|Physical form||White to off-white cellulose powder|
|Viscosity Brookfield 2% solution||30000-45000 mPa.s|
|Viscosity NDJ 2% solution||60000-90000 mPa.S|
|Mesh size||99% pass 100 mesh|
KimaCell® HPMC MP75M can be used in wall putty and skim coat. It has the bellow property:
In putty powder, cellulose ether plays three roles of thickening, water retention and construction.
Thickening: Cellulose ether can thicken to suspend and keep the solution uniform up and down, and resist sagging.
Water retention: Cellulose ether makes the putty powder dry slowly and assists ash calcium to react under the action of water.
Construction: Cellulose ether has a lubricating effect, which can make the putty powder have good construction.