MC, HPMC and HEMC
1.Structural formula
R=-H,-CH3,-CH2CH(OH)CH3,-CH2CH2OH
N=degree of Polymerzation
2.Introduction
MC, HPMC and HEMC are non-ionic cellulose ethers produced
from natural high molecular cellulose through series
of chemical changes. They are characterized by the solubility
in water, water retention, non-ionic type, stable PH
value, surface activity, reversibility from gelling
to solving at different temperature, thickening, binding,
film-forming, lubricating and mold resistance. Due to
all these special properties, they are widely applied
for thickening, gelling, dispersing, stabilizing, water
retaining and mixing improving in industries like building
material, painting, synthetic resin, porcelain, medicine,
food, textile, agriculture, cosmetics, cosmetics and
tobacco.
3.Technical requirements
Product |
MC |
HPMC |
HEMC |
MC |
ME |
MF |
MJ |
MK |
MH |
Methoxyl
content,% |
27.5-32.0 |
28.0-30.0 |
27.0-30.0 |
16.5-20.0 |
19.0-24.0 |
22.0-32.0 |
Hydoxy
propoxy content,% |
|
7.5-12.0 |
4.0-7.5 |
23.0-32.0 |
4.0-12.0 |
|
Gelling
temperature,°C |
53-67 |
58-64 |
62-68 |
70-75 |
70-90 |
60-90 |
Moisture
content,% |
≤5.0 |
Ash,%
|
≤10 |
PH
Value |
4-8 |
Appearance |
White powder or granule |
Fineness,mesh |
80, 100, 120 |
Viscosity,
mpa.s |
See
viscosity table
|
The parameters in this table conform to
product enterprise standard Q/HTS001—2004
The product consists of two kinds: product with surface
treatment (product dispersible in cold water) and product
without surface treatment (common type).
Viscosity table
| Viscosity
type |
Viscosity
range, mpa.s |
5 |
3-9 |
15 |
10-20 |
25 |
20-30 |
50 |
40-60 |
100 |
80-120 |
400 |
300-500 |
1500 |
1200-1800 |
4000 |
3600-5500 |
8000 |
7000-9000 |
10000 |
9000-11000 |
15000 |
13000-17000 |
20000 |
18000-22000 |
40000 |
36000-45000 |
60000 |
56000-65000 |
75000 |
70000-80000 |
100000 |
85000-130000 |
150000 |
130000-180000 |
200000 |
≥180000 |
The Viscosity can be abjusted according
to the requirement of the customers.
4.Packing
(1)Double-layer Bag
The product is packed in polyethylene film bag enclosed
in composite film bag.
Net weight is 25 or 20 kg per bag.
(2)Composite-fibreboard drum
The product is packed in polyethylene film bag enclosed
in composite-fibreboard drum.
Net weight is 20 or 10 kg per drum.
5.Transportation and storage
rotect the product against humidity and moisture. Storing
with other chemicals is not allowed.
|
