HEMC for Putty Powder Resists Base Cracking and Coating Peeling
*Good construction performance.
*Good water retention performance and resists base cracking and coating peeling.
*High intensity growth.
*Enough operable time and ensures the wetting performance and recoating performance of the putty on the base surface.
Hydroxyethyl methyl cellulose ether, referred to as HEMC, is a non-ionic cellulose ether obtained from natural polymer material cellulose through a series of chemical reactions. It is an odorless, tasteless, non-toxic white to off-white powder or granule, which can be dissolved in cold or hot water to form a transparent viscous solution, which has the functions of thickening, binding, water retention, dispersion, emulsification and film formation. , suspension, adsorption, colloid protection, etc
Structural formula
(n～2)/2
OR=-OH、-OCH3、-[OCH2CH(CH3)]nOH or-[OCH2CH(CH3)]OCH3
Specification of non modified products
Type Item | PD/PDS | HPMC PK/PKS | HEMC EM/EMS |
Non surface treatment | PD100M PD150M PD200M PD300M | / | EM60M EM70M EM100M EM150M EM200M |
Surface treatment | PD100MS PD150MS PD200MS | PK8000S PK100MS PK150MS PK200MS | EM6000S EM8000S EM10MS EM20MS EM30MS EM60MS EM100MS EM150MS EM200MS |
Gel temperature ℃ | 58.0～64.0 | 70.0～90.0 | 70.0～90.0 |
pH | 5.0～9.0 | 5.0～8.0 | 5.0～9.0 |
Loss on drying % | ≤5.0 | ≤5.0 | ≤5.0 |
Burning residue % | ≤5.0 | ≤5.0 | ≤5.0 |
Bulk density g/L | 330～400 | 350～420 | 350～420 |
Methoxy % | 23.0～25.0 | 19.0～24.0 | 19.0～24.0 |
Hydroxypropyl % | 8.0～11.0 | 4.0～12.0 | / |
Hydroxyethoxy % | / | / | 7.0～10.0 |
Applied to putty characteristics
1. it has good construction performance.
2. it has good water retention performance and resists base cracking and coating peeling.
3. high intensity growth.
4. it has enough operable time and ensures the wetting performance and recoating performance of the putty on the base surface.
HEMC packaging and storage
Barrel or paper plastic bag lined with polyethylene film inner bag.
Net weight of each bag: 25kg.
Protect from sun and rain during storage and transportation.
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