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PU Coatings
Polyurethane can be used as one component system (1K formulation), where a high molecular weight PU is mixed with isocyanate that cures with moisture, though it can be used with non-isocyanate formulations as well. PU coatings are also widely used through two components systems (2K formulation) where a polyisocyanate reacts with a polyol or a polyamine. PU coatings bring color retention, better surface finish (high gloss), increased scratch and abrasion resistance as well as moisture resistance. They are applied on many different substrates in very diverse markets like automotive, aerospace, furniture, flooring, and textiles. Strong drivers for their use include low to zero VOC emissions and the potential use of renewable sources like bio-based polyols.

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Jun 8, 2015 | Article

UBE, a Strong Player in the Polyurethane Market – Interview of Dr. Manuel Colera

Dr. Manuel Colera, Business Development Manager at UBE, was interviewed by Dr Raphael Mestanza, in order to give an overview of UBE’s positioning in the growing Polyurethane market. UBE is a...

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Apr 22, 2014 | Article

Hydrophobic & Oil-resistant UV-curable PUDs Based on Acrylated Soy-polyol

UV-curable polyurethane dispersions (UV-PUDs) are fast expanding commercial applications since they combine benefits of both water-borne as well as UV-curing technologies while addressing many...

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Apr 1, 2014 | Article

Hydrophobic and Oil-resistant Coatings Based on Advanced Green Polyurethane Dispersions

In recent years, there have been significant interests among scientists around the world to design smart coatings that combine the standard desirable mechanical and chemical resistance properties...

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Jan 23, 2014 | Article

Vegetable Oil-based Fatty Amide as Hydrophobes in Associative Thickener

A vegetable oil based high performance associative thickener has been designed and synthesized from a hydroxyl functional soybean oil derivative (hydroxyl value 159 mg KOH/g). An...

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Jul 25, 2013 | Article

Anticorrosive 2K Polyurethane Paints

Two-component solvent-borne polyurethane paints containing mica, quartz, TiO2, wollastonite, talc as well as either nanosized aluminum phosphate or microsized aluminum-zinc phosphate as an...

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Apr 28, 2014 | Article

Accelerated Drying of Water-dispersible Polyurethane Blends

Mixtures of water-dispersible isocyanate and polyol-terminated oligomers were blended with methacrylate-terminated urethanes and a water-dispersible photoinitiator to accelerate the dry time of thin...

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Apr 11, 2014 | Article

Polyurethane Coatings Prepared from CNSL-based Polyols: Synthesis, Characterization and Properties

Conventional polyurethane chemistry based on polyol and isocyanate chemistry is widely used for many applications ranging from plastics to coatings, constructions, pharmaceuticals, foods, etc. The...

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Mar 10, 2014 | Article

Synthesis of Novel Hyperbranched Alkyd & Isocyanate Trimer-based PU Coatings

In the present work, hyperbranched urethane alkyd high solid coatings were formulated by mixing hyperbranched alkyd and isocyanate trimer. Initially, a second generation hyperbranched polyol (HBP)...

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Sep 4, 2013 | Article

Synthesis of Waterborne Polyurethane Dispersions with Polycarbonates of 1,6-Hexanediol of Different Molecular Weights

Waterborne polyurethane dispersions (PUDs) were synthesized with polycarbonates of 1,6-hexanediol of different molecular weight (500–3000 Da) and their properties, adhesion (Hatch adhesion) and...

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Jun 22, 2013 | Article

Homogeneous Isocyanate- and Catalyst-free Synthesis of Polyurethanes in Aqueous Media

This comunication reports an efficient and environmentally-friendly method of synthesizing polyurethanes in aqueous solution via an isocyanate- and catalyst-free polymerization process. Five...

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