Percol® 182

Technical  Information



Chemical nature
Percol 182 is a non-toxic high-molarmass
water-soluble polyacrylamide
derivative.

Physical form White fine granules



Technical nature
Bulk density ~ 0.8 g/cm³
Ionic charge Cationic
Solid content* ≥ 88 %
pH- value** ~ 4.5

This information only indicates a typical
property of the product and MUST NOT
be taken as specification.
* 10 g dried for 2 h at 120 °C
** measured in a 0.3 % solution; deionised
water


Storage
Product must be stored in a cool dry
place. All protective packaging should
be kept in place until the product is
required for use. Recommended storage
period of 1 year.


Special feature
Percol 182 is supplied as free flowing
granules with excellent solubility.
Polyacrylamide derivates like Percol
182 are the basis of state of the art
single, dual, multi component, Hydrocol
® and Telioform® retention systems.
Areas of appl icat ion
Retention and drainage aid for the
manufacture of all paper and board
grades.
Recommended in single, dual and multi
component, Hydrocol, reverse Hydrocol,
post screen Hydrocol and Telioform
microparticle retention systems.
In order to achieve best performance, it
is recommended to use Percol 182 as
part of an optimized BASF system in
combination with Hydrocol, Polymin®,
Catiofast® and/or Telioform products.
Also applied as a polymer flocculant for
enhancing the efficiency of paper machine
saveall systems.


Benefits
- Gives superior first pass retention of
fines and mineral fillers in papermaking
furnishes.
- Enhances drainage for energy savings
in sheet forming, pressing and
drying.
- Decreases white water solids to improve
raw material yield and saveall
efficiency.
-Improves paper machine output and
runnability for maximum return on investment.
- Enhances wet-end colloidal retention
leading to improved sizing and dye
efficiency.
- Provides stable wet-end conditions to
improve sheet uniformity and paper
properties.
- Performs over a wide pH range.


Preparation and Application
Designed for thin stock addition prior
to sheet formation with a minimum
of shear after dosage.
It is important to achieve a homogenized
distribution of Percol 182
solution in the paper stock. This can
be achieved by optimizing the speed
differential between solution and
stock or by choosing a suitable point
of dosage.
BASF can provide recommendations
for suitable preparation and
metering solutions.

Usual addition rates
Retention system: 0.01 – 0.1 %
based on paper production tonnage
Recommended solution concentrations
Primary Solution: 0.25 – 0.5 % max.
Final Solution: 0.05 – 0.1 % max.

Preparation of Primary Solution
To prepare a ready to use polymer solution it is recommended to use a suitable make-down equipment which provides a homogenous and
lump free solution and a minimum mixing time of 60 minutes and a holding time of 60 minutes.
Water for primary dilution Ideally in a range of 15 – 35 ºC. Lower temperatures will require a
longer stirring and mixing time. Higher temperatures will cause product hydrolysis and loss of efficiency.
Free of solids, free of color, free of transition metals and free of bleaching materials. High calcium hardness can accelerate the negative
effects of other damaging materials or high temperature.

Storage of Primary Solution
After holding time the Primary Solution should be used as soon as possible and within 24 hours to
avoid hydrolysis or bacterial/fungal growth and therefore a loss of effect.
Solutions with a pH of greater than 5 prepared with hard water are unstable, and their pH needs to be adjusted to 4 – 5 with sulphuric acid before they are stored for any length of time.

Preparation of Final Solution
To dilute the Primary Solution to
final concentration suitable in-line
mixing equipment such as a static
mixing device or a mixing pump is
recommended.

Water for final dilution
The quality of water used for final
dilution is not as critical as that used
for the Primary Solution preparation.
The contact time should be limited
and the flow should have sufficient
velocity to maintain cleanliness in
addition lines.
Warm water can be used.

Biocide treatment
All BASF flocculants are sterile as supplied, but polymer solutions can act as a growth medium for airborne and/or waterborne fungus/bacteria.
Where this occurs, continuous addition of biocide is required. Only Isothiazoline based biocides are
recommended, at an addition level of 1 – 2 ppm active on water volume. Any contaminated pipework should be replaced before the
treatment is initiated.