Belofor OB-liquid, OBd-liquid
Application
They are used in manufacture of office, offset printing, graphic papers, sanitary and household paper types, paper and cardboard for packaging.
The use of the optical brightener based on its ability to absorb in the 300-400 nm UV radiation, thus transforming it in the visible spectrum (400-500nm), i.e. blue or violet. Optical brightener compensates blue color in reflected light, resulting in increased brightness of the processed surface.
Specifications
|
indicator |
Norm |
|
|
Belofor OB liq |
Belofor OBD liq grade A |
|
|
|
TU 2463-277-05800142-2006 |
TU 2463-271-05800142-2006 |
|
Appearance |
The liquid from yellow to yellow-brown color |
|
|
A type |
tetra-sulfo |
|
|
The nature of ion |
anionic |
|
|
Maximum absorption nm |
349 |
|
|
Density at (20,0 ± 0,1) ° C, g / cm 3 |
1,15-1,19 |
1,09-1,14 |
|
Activity index of hydrogen ions, ed. pH |
8,5-10,0 |
|
|
Crystallization temperature, ° C, max |
-10 |
-4 |
|
Solubility in water |
It dissolves completely |
|
|
Dynamic viscosity (Brookfield, 20 ° C), mPas |
below 50 |
|
|
Stability: acid alkali to hard water |
medium high high |
|
|
Compatibility: to anionic products a nonionic products to cationic products |
very good very good determined by preliminary tests |
|
|
Substativnost |
good |
|
Directions
Optical brighteners are used to improve the whiteness of paper by adding: to the pulp; coated in the paste during coating; a surface treatment of paper and cardboard in the size press.
Dosage of Belofor depending on the bleaching process
Recommended dosage at bleaching in weight:
Belofor OB liq (OBD grade A) 0.05-1.5% (0.5-15 kg / ton) based on the weight of dry pulp
Recommended dosage when the surface bleaching (size press)
Belofor OB liq (OBD grade A) 0.5-12 g / l amount of sizing liquid.
Recommended dosage with coating:
Belofor OB liq (OBD grade A) 0.2-2.0 parts based on the pigment
Features
- Beloforom whitening is done only after prior chemical pulp bleaching.
- Belofor should be loaded first from chemical cellulose suspension.
- Place input bleach should be as close as possible to the top of the paper production process (with a sufficiently high concentration of cellulose).
- Belofor is compatible with various types of starch, CMC, PVA and synthetic binders.
- Stable liquid form provides the use of metering equipment to enter bleach pulp.
- Paper bleached beloforami good tinting direct, basic dyes and pigments.
- Belofory effective at neutral and acidic sizing of paper and paperboard.
- Belofor OB liquid, OBD liquid is effective in water medium and high rigidity.
- Belofors have permission to use in the production of paper and paperboard intended for food packaging.
- Belofor OBD grade A is bezmochivinnoy discharge form, with its use significantly reduced amine process water contamination and the likelihood slizeobrazovaniya on paper machine parts.
Safety requirements
Belofor OB liq, Belofor OBD - low-hazard substances. 4 class of danger.
Packaging & storage
Packing in accordance with the requirements of the consumer (evrokuby, tanks).
The product is stored as packed in closed storage rooms at a temperature of not less than -5 ° C and not more than + 30 ° C.
Shelf life - 6 months from date of manufacture.