Modified Construction Grade Cellulose Ether

Modified Construction Degree

Modified cellulose ethers are produced by chemical reaction or physical blending of HPMC with starch ether (HPS) and other additives. Viscosity range from 60,000 to 180,000 mPa·s, with adjustable substitution level.

Advantages over pure HPMC: better anti-slip, longer open time, improved heat resistance, lower cost.

Grade	Viscosity (mPa·s)	Substitution	Note
MD 6220	100,000	High	30 min open time
MD 6120	70,000	High	30 min open time
MD 6620	40,000	High	35 min open time
MD 80D	200,000	High	Open time + slag retention
MD 80DD	200,000	High	Slag retention, delayed
MD 5220	100,000	Medium	20 min open time
MD 5120	70,000	Medium	20 min open time
MD 5620	40,000	Medium	20 min open time
MD 5600	100,000	Medium	Economic
MD 740	60,000	Medium	Economic