A hybrid polyurethane/polyurea polymer suitable for forming a coating on a structure which is in contact with water includes the reaction product of a polyol component consisting of one or more polyols, a polyamine, and a curing agent, such as a polyisocyanate. The polyol component includes a Novolac-type polyether polyol.

An exemplary embodiment of the present disclosure provides a polyurethane core for use in a floor or wall panel, the core comprising a polyol made, at least in part, from one or more recycled materials, and an isocyanate.

Described herein is a process for preparing a polyurethane elastomer including the steps of (A) preparing an isocyanate prepolymer (a), where the isocyanate prepolymer has an isocyanate content in the range of ≥1 wt.-% to ≤9 wt.-%, and (B) preparing a reaction mixture by mixing at least one epoxy compound (b) with the isocyanate prepolymer (a) in presence of at least one catalyst (c), and where the amount of the alkali metal or alkaline earth metal salt is 0.00001 to 0.1 mol per kg of the total weight of the isocyanate prepolymer (a), the epoxy compound (b) and the catalyst (c), and heating the mixture to at least 80° C. to obtain the polyurethane elastomer. Also described herein are a polyurethane elastomer obtained by process and a method of using the polyurethane elastomer as part of a roller or as a sealant.

The invention relates to a method for reducing water content of an epoxy or/and polyurethane paint dispersion to be prepared in a sealed and pressurized aerosol can which paint dispersion comprises, —free water of an amount W1, —organic solvent(s) of an amount W2,5-epoxy or/and polyurethane resin of an amount W3, —liquefied propellant of an amount W5, —ketone of an amount W6, —blocked hardener (hardener precursor) of the epoxy or/and polyurethane resin of an amount W4, wherein said blocked hardener compounds of said epoxy or/and 10 polyurethane resin is selected from the group comprising of an aldimine, an enamine, an imine, a Mannich base, a Schiff's base, an oxazolidine or a bisoxazol-idine, and mixtures thereof, —adjuvants, —water scavenger(s), —catalytic amount of a weak acid to shift equilibrium of reversible reaction (I) between the free water present in said dispersion and blocked hardener compounds of the epoxy or/and polyurethane resin back to formation of said initial epoxy or polyure-thane blocked hardener compounds and to prevent formation of the epoxy or/and polyurethane hardener amines: expoxy and/or polyurethane hardener+ketones catalyst expoxy and/or polyurethane+free water (amine) hardener precursor (1). The method comprises a step in which before providing organic solvent into the aerosol can its water content is reduced by admixing reactant with sulfonyl isocya-nate functionality as a water scavenger into said organic solvent.

A method is provided for bonding substrates having dissimilar coefficients of thermal expansion, using a thermoset adhesive. The method involves a pre-cure step using radio-frequency energy, followed by a heat-curing step.

The present application relates to a field of anti-corrosion coating, in particular, relates to an aspartic polyurea coating including a polyaspartic acid ester: 36%-60%; a ketoimine: 4%-8%; a dispersant: 0.5%-1.0%; an organotin catalyst: 0.1%-0.2%; a titanium white powder: 0%-48%; a thixotropic agent: 0.2%-1.0%; a leveling agent: 0.05%-0.3%; an antifoamer: 0.1%-1.0%; an antiager: 0%-3.0%; a coupling agent: 0%-5%; a diluent: 0%-10% and component B isocyanate curing agent.

One-component, moisture-curable polyurethane adhesives exhibit excellent handling strength before being fully cured, and excellent creep properties after curing. The adhesives include an isocyanate-terminated prepolymer made from polyols that include a crystalline polyester and hydroquinone bis (2-hydroxyethyl) ether, and a polyoxazolidine compound.

A coating system includes at least one putty layer and at least one clear coat layer. The at least one putty layer includes a putty having a binder component which has at least one polyaspartic acid ester and a hardener component which has at least one polyisocyanate. The at least one clear coat layer includes a clear coat coating material based on an RMA binder or a polyaspartic acid ester binder.

A binder system, containing a special polyol mixture as a resin component, said polyol mixture containing at least one polyester based on a fatty acid dimer, a fatty acid trimer or the alcohols derived therefrom, and at least one polyisocyanates as a resin component and/or a NCO-terminated polyurethane prepolymer. The binder system can be used as an adhesive/sealing material, in particular as an adhesive for gluing various substrates.

One-component, moisture-curable polyurethane adhesives exhibit excellent handling strength before being fully cured, and excellent creep properties after curing. The adhesives include an isocyanate-terminated prepolymer made from polyols that include a crystalline polyester and hydroquinone bis (2-hydroxyethyl) ether, and a polyoxazolidine compound.