reactive diluent
Our range of versatile liquid polyols
Promote superior end-product performance in radiation curing Enhance properties of polyurethane elastomers and foams
Tailor ideal additives for a wide variety of applications
Create new opportunities through product development
The elements of success
You need a partner who can see the big picture when it  comes to your products, your processes and your customers.  Our experience and expertise in the special niches of organic chemistry, process technology and application development  are at your service, providing you with a complete chain of  solutions to enhance quality and profitability at every step. Our versatile intermediates, an essential element of your  winning formula, are specifically designed to add value and enhance end-product performance. Your solution to meeting  the increasing demands for safer, lighter, more durable and  environmentally friendly end-user products, begins here.Innovation in everything we do
Innovation distinguishes every aspect of our business process.  Developing smarter and safer solution
s creates real value
in new chemical applications. Focused innovation instills leadership and purpose in our business activities, improves internal processes and increases application and product competitiveness.
Delivering our promises globally
Our global presence provides you with reliable solutions and processes, consistent high quality, security of production and supply and delivery with precision. This commitment also means rapid response when product or application support
is required and the very best in technical support.
Putting the care into chemicals
We take our responsibilities to heart and are committed to
a ttentive, sustainable business practices. We minimize risks for our customers, our employees and the environment by working proactively to ensure safe products and processes.
Promoting superior performance Radiation curing and polyurethane performance
Our polyether polyols, alkoxylates, comprise a range of liquid
polyols containing primary and secondary hydroxyls derived
from ethylene and propylene oxide respectively. Our alkoxylates
are ideal for radiation curing diluents for printing inks and
industrial coatings. Another main application is as cross-linkers
in polyurethane foams and elastomers to promote superior
end-product performance.
Ideal additives
In addition, our alkoxylates can be used in a wide number
of other applications such as in polyol esters for synthetic
lubricants and as PVC stabilizers. Derivatives can be made to
allow their use as surface-active agents like defoamers. Polyol
3165 with a low OH number and high MW can be used when
additives are needed for water compatibility, for example
emulsifiers for rosin esters. Polyol 3990 is employed as a liquid trifunctional starter for polyether polyols, polyesters and
polyurethanes with primary OH groups. Alkoxylates can also
facilitate the surface modification of pigments where the surface Array characteristics can be altered and are useful in oilfield chemicals,
in esters for metalworking and as various additives in paints and coatings.
Our new products in this area, including the hexafunctional
Polyol R6405, continue to develop the spectrum of applications
where alkoxylates can enhance product performance.
Our unique range of alkoxylated polyols with different hydroxyl functionalities is ideal for radiation curing products. Their use  in industrial coatings for wood and plastics, in printing inks  and varnishes for graphic arts, and in electronics and adhesives applications promotes superior end-product performance.  The improvement of the health and safety profile of acrylate  monomers for radiation curing is a major achievement over the past two decades. Our alkoxylates are developed to address this  issue and are specially designed to comply with current require-ments such as very low levels of critical impurities. The quali-fication of the diluents as non-irritants has increased use of this technology in coating, ink, adhesive and electronic markets.Compared to traditional solvent borne coating technologies, radiation curing offers several advantages such as environmentally friendly solvent-free systems, high productivity and excellent coating, ink and adhesive performance. Radiation curing also
reduces investment and energy costs, takes less production space and you benefit from the good availability of raw materials for various application fields.
Enhancing radiation curing
Stronger, safer & better elements
Essential to coating properties
Alkoxylated polyols serve as key precursors to acrylate monomers used as reactive diluents and are usually the main part of formula-tions. Diluents for radiation curing reduce the viscosity of the formulated system in order to obtain the desired processing
conditions and are essential for obtaining the required properties of the end product. Coating properties like wetting, adhesion, toughness and resistance to abrasion and chemicals can all be influenced by the diluent so the choice of alkoxylate is critical  as it strongly influences all of these properties.
Unique oligomers
In addition to the use of these alkoxylates in reactive diluents, they can also be used to develop unique polyester, urethane and aminoacrylate oligomers. Thanks to our large product portfolio, an almost infinite derivatization of oligomers can be made, suitable for any end application and performance. Moreover, Perstorp has extensive expertise in the field of radiation curing and in assisting our customers in getting the most out of our product range.
Time (s)
0.010.1110
38
373635HDDA 0.001
34333231TPGDA R2490DA
S u r f a c e  t e n s i o n , m N /m
Much lower surface tension for better wetting of low surface energy substrates and pigments with R2490DA vs. hexane diol diacrylate (HDDA) and tripropylene glycol acrylate (TPGDA)
Shear rate (s)
1
10
1001,000
10,000
V i s c o s i t y , P a s  a t  25
°C
Lower viscosity at lower shear rate for improved flexo ink transfer and flow with R2490DA vs. HDDA
We now offer Polyol R2490 as an alternative to typical  di f unctional polyols hexane diol (HD) and tripropylene  glycol commonly used as starters for acrylate diluents. The acrylate of R2490 is a difunctional monomer that provides a number of advantages over hexane diol-based acrylates. As a non-irritant product it allows Xi-free labeling of formulations and is much less air inhibiting during free radical polymerization thanks to abstractable alpha-hydrogens.
The lower surface tension of Polyol R2490 diacrylate better facilitates the pigment wetting required for ink stability. Its
improved flow also results in better ink transfer during printing, enhancing print quality. Low shrinkage, good flexibility and excellent adhesion to difficult substrates make this product the reactive thinner of choice for high-speed processes involving  UV flexographic inks for labeling and packaging. An additional difunctional polyol now available for wider application,
R2395, is based on the versatile diol Butyl Ethyl Propanediol (BEPD) and is intended partly as an alternative to hexane diol ethoxylates and propoxylates.
Precisely tailored
end-product properties
Difunctional polyols – safety & performance

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