Incozol® latent curing agents are used in a wide variety of coating, adhesive and sealant applications. They are particularly advantageous where high build properties are desirable, for example, waterproof coatings and construction sealants.

This range of oxazolidines can be used in both one and two component PU systems. In one component systems they are normally used with aliphatic prepolymers. They promote fast through-cure with no carbon dioxide gas evolution. The curing agents hydrolyse on exposure to moisture, yielding reactive amine and hydroxyl functional groups.

In two component systems they can be also be used with aromatic prepolymers or isocyanates.

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Incozol 2 acts as an effective moisture scavenger in polyurethane coatings and sealants. It is used to eliminate moisture from solvents, polyols and prepolymers and also from plasticisers and pigments. It removes residual moisture from the formulation and prevents bubbling and downglossing caused by high moisture levels either on the substrate or from the atmosphere.

 

Incozol 2 is used in one or two component systems but is not generally recommended in one component systems with a low NCO content.

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Over the last decade, there has been a considerable transformation in the solvent-borne industrial coatings market. Major developments have taken place in water based coatings technology, which has now expanded from the consumer house paint market into industrial sectors. Increasingly stringent VOC regulations have led to the development of a more viable water based alternative to solvent borne technology. However, some limitations still exist, particularly with the key characteristics of chemical and abrasion resistance in coating performance.

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The Incorez W2000 series of waterborne polyurethane/acrylic dispersions is designed for use in the formulation of high performance coatings, adhesives and inks. These dispersions combine the excellent physical resistance properties of polyurethanes with the binding and wetting properties of acrylic emulsions.

 

Upon application, film formation takes place by evaporation of water to yield tough, resilient films with good chemical and stain resistance.

 

Small additions of cross-linking agents may be uesd to upgrade chemical/solvent resistance.

 

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