ASKOCOAT™
Benefits

Controlled Release Fertilizer• Excellent release properties• High mechanical stability and temperature resistance of coated granules

ASKOCOAT™

• Extremely fast coatings process at moderate temperatures• Tack free coatings

ASKOCOAT™ – fertilizer coatings using a gaseous catalyst
ProductComponent

Viscosity (mPa.s)

Further characteristics

ASKOCOAT™ 420

Polyol1,000 – 2,000

OH-number: 200 – 400 mg
KOH/g

ASKOCOAT™ 500

Isocyanate

150 – 300

NCO-content: 30 – 35 %Catalyst 704

Amine

ASKOCOAT™ – fertilizer coatings using a liquid catalyst
ProductComponentViscosity (mPa.s)

Further characteristics

ASKOCOAT™ 420

Polyol1,000 – 2,000

OH-number: 200 – 400 mg
KOH/g

ASKOCOAT™ 500

Isocyanate

150 – 300

NCO-content: 30 – 35 %Catalyst 804

Amine

Catalyst 806

Amine

Flash point: ~40 °C
Flash point: ~88 °C

ASK Chemicals GmbH
Reisholzstraße 16 – 1840721 Hilden, Germany
Phone: +49 211 71 103-0
Fax:+49 211 71 103-35
specialties@ask-chemicals.com
www.ask-chemicals.com

Technical data sheets and guide formulations areprovided on our website: www.ask-chemicals.com.

This information is based on our current state of knowledge and does not represent assurance of the properties of the products described. We are only liable for
product-related advice and information within the scope of duties of disclosure included in collateral contractual agreements unless expressly agreed otherwise. (02 / 23)• Solvent-free and 100 % reactive resin system

Excellent performance,first-class application,and highest quality.
Tailor-made for you.

ASKOCOAT™
This resin system is especially designed for fertilizer coatings to achieve excellent

Fertilizer Coatings

adjustable release properties. Water is able to slowly penetrate through the coatinglayers into the granule and dissolves the nutrients of the fertilizer granule. The nutrients

ASK Chemicals offers 2K PU resin systems for the production of polymer coated controlled

are released due to osmosis. The release time of nutrients is controlled by coating

release fertilizers based on all kind of granules.

thickness, thinner coatings result in faster release, and temperature, warmer temperatures
result in faster release. The release time can be adjusted from 2 to 24 months depending

The patented coating system consists of two components, a polyol and an isocyanate.

on the quantity of coating material. The patented phenolic PU coating increases theThe polyol is a modified solvent-free phenolic resin formulation containing more than 60 %stability and elasticity of the coated fertilizer and prevents salt stress caused by uncont-renewable raw materials. The isocyanate component is a modified isocyanate formulationrolled release of nutrients.

including a bench life extender to achieve a controllable reaction in the mixing equipment.
Both components are solvent-free and contain only reactive ingredients to prevent leach out
As a specialist in tailored phenolic resin,of coating chemicals into the soil.

ASK Chemicals offers a range of innovative
solutions to produce polymer coated

The fertilizer granules are coated at ambient to moderate temperatures in a drum mixer.

controlled release fertilizers. In addition toTherefore, also granules with lower melting points like urea, can be coated with this technology.

excellent performance, highly efficient

The resin system shows a homogeneous distribution without any defects on all kind of granules.

binding agents from ASK Chemicals also

The curing reaction takes place by a polyaddition reaction and is catalyzed by addition of afeature top-class application properties.

gaseous or liquid amine to the resin system. Using a liquid amine with high flash points prevents

Resin systems from ASK Chemicals forthe use of ATEX equipment. A spray curing process secures optimal catalyst distribution. The

manufacturing controlled release fertilizer

coatings process is very fast and efficient, the typical curing time for one layer is below twoYour benefits at a glance: xcellent application properties thanks
Eto high performance resin systems
 pgrading the quality and the performance
Uof your fertilizer granules

minutes to be tack free.

Release of nutrients
Release nutrients [%]are well-known as ASKOCOAT™.

 op-class customer service, tailor-madeTdevelopments and modifications

H 2O

H 2O
H 2O

 olvent-free resin formulations with highSpercentage of renewable raw materials
H 2O

H 2O

H 2O
Time

ASKOCOAT™

Fertilizer

H2O (water)