1. business and industrial
2. chemicals industry
3. plastics and polymers

Gellner Industrial LLC
105 TIDE ROAD
HOMETOWN, PA 18252
PHONE: (570)668-8800
Ottopol 25 Series 25-50E 25-50 25-30 Technical Data sheet
Product Overview
Alkali Soluble Acrylic Resins
Three Grades to Suit Individual Preferences
The Ottopol 25 Series are specifically designed for use as a grinding and let down vehicle for water based roto-gravure and
flexographic inks. They provide high gloss and excellent press stability. Ink and coating makers will benefit from the versatility of the
Ottopol 25 Series as a sole binder or component of high gloss inks and over lay varnishes. These polymers are derived from the same
monomer composition, the dry resin is identical throughout the series. The three variations will satisfy customer needs for specific
applications.
EXCELLENT ADHESION TO SUBSTRATES
On PVC, Polyester, Polystyrene, and Coated Cellophane, this series of polymers provide excellent adhesion.
SUPERIOR PRINTING QUALITIES
Ottopol 25 Series’ unique characteristics impart excellent flow and leveling to inks and coatings, making gravure print quality possible
that could only be attained with solvent systems in the past. The viscosity curve of this resin is relatively flat and shows a very low
degree of thixotropy. The result is superior printing quality.
GOOD PIGMENT WETTING
High industry standards are met when Ottopol 25 Series is used as a dispersion stabilizer, or purely for wetting purposes. Optimum
color development is achieved with a large variety of pigments.
EXCELLENT GLOSS
The rheological properties of Ottopol 25 solutions contribute to high gloss, while the use of maximum amounts of alcohol will
increase the gloss of this resin.
25 Series
PRODUCT SPECIFICATION
25-50E
Description
Appearance
Solids
Viscosity
pH
Specific Gravity
Weight/Gallon
Flash Point
Freeze Thaw Stability
FDA Status
25-50
Acrylic Emulsion
Milky White
49.0 – 51.0%
250 – 2000 cps.
6.5 – 7.5
1.087
8.91 lbs.
None
None
175.300
25-30
Acrylic Resin Solution
Slightly Hazy, Viscous
48.0 – 50.0%
4000 – 6000 cps
8.0 – 9.0
1.067
8.90 lbs.
170 F PMCC
5 Cycles
175.300
Acrylic Resin Solution
Clear, Viscous
29.0 – 31.0%
2000 – 4000 cps
8.0 – 9.0
1.075
8.96 lbs.
None
5 Cycles
175.300
OTTOPOL 25-50E STARTING FORMULATIONS
Ottopol 25-50E must be converted to a solution. Ammonia @ 28% concentration will yield the fastest drying speed. Organic amines
will delay the drying process and may be used if applicable. The point of neutralization can be calculated, given the acid number of
130. A varnish containing 30% dry resin will have an approximate viscosity of 4,000 cps (Ottopol 25-30). Higher solids, increased
drying speed and lower viscosity can be achieved by substituting Isopropyl Alcohol for water. The resulting viscosity will be 400 cps
@ 40% Solids.
30% SOLIDS BASE VARNISH
Materials
Parts by Weight
Ottopol 25-50E
Water
Aqua Ammonia 28%
60.0
35.2
4.8
100.0
40% SOLIDS BASE VARNISH
Materials
Ottopol 25-50E
Isopropyl Alcohol
Aqua Ammonia 28%
Parts by Weight
80.0
14.4
5.6
100.0
Procedure: Dilute 25-50E and mix thoroughly before adding ammonia.
OTTOPOL 25-50 STARTING FORMULATIONS
High Gloss High Solids Varnish
Materials
Parts by Weight
Ottopol 25-50
Water
Perenol S-5*
BYK 321**
85.0
14.6
0.2
0.2
100.0
* Henkel Inc.
** BYK Mallinckrodt
All Purpose & Anti-offset Overlay Varnish
Materials
Ottopol 25-50
Water
Perenol S-5*
BYK 321**
Parts by Weight
85.0
14.6
0.2
0.2
100.0
*** Mona Industries
Procedure: Place all components into a mixing tank while stirring, until all components are homogeneous.
Ottopol 25-50 Grinding Varnish A
Materials
Parts by Weight
Ottopol 25-50
Water
Isopropyl Alcohol
60.0
8.0
31.8
Defoamer*
0.2
100.0
Ottopol 25-50
Isopropyl Alcohol
Water
Organic Pigment**
Inorganic Pigment***
Defoamer*
*Dee-Fo 1020F Ultra Additives
**American Cyanimid: Barium Lithol Red, etc.
*** TiO2 or Chrome Yellow
25.00
15.00
29.95
30.00
0.00
0.05
100.00
12.00
7.00
10.95
0.00
70.00
0.05
100.00
Ottopol 25-50 Pigment Concentrate
Materials
Parts by Weight
-1
-2
Procedure: Place all components into a mixing tank while stirring, until all components are homogeneous.
Flexographic Inks
Materials
Flexographic & Gravure Inks
Parts by Weight
Grinding Varnish A
Water
Urea 50% Solution
Butyl Cellosolve
Dimethylethanolamine
Ottopol Wax 35
High Solids Press Cakes:****
Ba-Li Red 410-5010
Radiant Yellow 474-5074
Phthalo Blue 499-5050
-1
-2
-3
45.0
14.5
3.0
2.0
0.5
5.0
59.5
-3.0
2.0
0.5
5.0
59.5
-3.0
2.0
0.5
5.0
30.0
---30.0
---30.0
100.0 100.0 100.0
Materials
Parts by Weight
Gravure
Pigment Concentrate
Isopropyl Alcohol
Water
Ottopol 25-50
Ottopol Wax 35
Aerosol OT 75
30
7
31
26
5
1
100
Flexo
50
5
21
18
5
1
100
Procedure: Place all components into a mixing tank in the
order listed. Add each component while mixing, stir for 15
minutes or until the ink is homogeneous.
Procedure: Place all components in the order listed into a mill
or a high shear mixing tank. Grind until desired gauge reading
is attained.
**** Sun Chemical Corp: Sun Sperse Presscakes
OTTOPOL 25-30 STARTING FORMULATIONS
Materials
Pigment Concentrates
Materials
Parts by Weight
-1
-2
29
19
-10
70
--70
1
1
100
100
Procedure: Same as above (Flexographic Inks).
Ottopol 25-30
Water
Organic Presscake 50%
Inorganic Pigment
Defoamer
Parts by Weight
-1
-2
43
40
14
10
5
5
1
1
20
36
17
9
100
100
Procedure: Same as above (Flexographic & Gravure Inks)
Ottopol 25-30
Isopropyl Alcohol
Ottopol Wax 35
Aerosol OT 75
Pigment Concentrate
Water
Flexographic & Gravure Inks
25 Series