Resin compositions including (A) a hollow organic polymer particle, (B) an epoxy resin, and (C) a curing agent provide cured products having a superior smear removal properties.

The invention relates to a formulation comprising: —a first component which is formed from at least one isocyanate and at least one amino resin, wherein said amino resin is the condensation product of an aldehyde with a compound selected from the group comprising urea, melamine, benzoguanamine, glycoluril, acetoguanamine and mixtures thereof; and —a second component comprising at least one polyether, wherein said polyether comprises at least one ethylene oxide moiety and at least one isocyanate reactive group selected from the group comprising hydroxyl, amino, epoxy, and thiol, preferably hydroxyl.

The present disclosure relates to a method for producing rigid polyurethane foam composite elements, including at least one outer layer and a rigid polyurethane foam layer, by mixing (a) polyisocyanates with (b) compounds having at least two hydrogen atoms reactive with isocyanate groups, (c) optionally flame retardant(s), (d) blowing agent, (e) catalyst, and (f) optionally auxiliaries and adjuvants to form a reaction mixture, applying the reaction mixture to the outer layer, and curing it to form the rigid polyurethane foam. The present disclosure further relates to a rigid polyurethane foam composite element obtainable by such a method.

A process comprising, consisting of, or consisting essentially of: forming a reaction mixture containing at least one polyisocyanate and an isocyanate-reactive compound comprising at least one alkoxylated triazine-arylhydroxy-aldehyde condensate composition wherein the alkoxylated triazine-arylhydroxy-aldehyde condensate composition is a reaction product of a triazine-arylhydroxy-aldehyde condensate and at least one alkylene carbonate, is disclosed.

The present invention relates to a method for producing flexible polyurethane foams based on polyoxymethylene-polyoxyalkylene block copolymers. The invention also relates to the use of the flexible polyurethane foams thus produced and their use for producing furniture upholstery, textile inlays, mattresses, automobile seats, headrests, armrests, sponges, foam sheets for use in automobile parts such as roof linings, door panel upholstery, seat covers and technical components. The invention finally relates to a two-component system for producing flexible polyurethane foams.

The present invention relates to a coated granular substance, wherein the coating comprises a resin comprising the reaction product of a polyol component and an isocyanate component and cured by the addition of a catalyst, said catalyst comprising a hydroxy group-containing amine compound. Further, the present invention relates to a process for coating a granular substance, comprising the steps of (a) providing a granular substance; (b) providing a polyol component and an isocyanate component; (c) optionally mixing the polyol component with the isocyanate component; (d) adding the mixture of step (c) or the polyol component and the isocyanate component as individual substances to the provided granular substance and producing a coating on the granular substance; (e) adding a catalyst to cure the coating; (f) optionally repeating steps (d) and (e), wherein the catalyst comprises a hydroxy group-containing amine compound.

Benzyl ether-type phenolic resins are useful in either a phenolic resin polyurethane cold-box (PUCB) process or a phenolic resin polyurethane no-bake (PUNB) process. The benzyl ether-type phenolic resins contain at least one formaldehyde scavenger in the form of a beta-dicarbonyl compound, and an alpha-carbonyl-carboxyl compound, particularly glyoxylic acid, binders based on these phenolic resins, and isocyanate compounds having at least two isocyanate groups. The resins having the inventive concept exhibit low free formaldehyde content. The inventive concept extends to molding material blends containing the binder, and a method for producing cores, molds or risers.

Methods for producing proppants with a fluorinated polyurethane proppant coating are provided. The methods include coating the proppant particles with a strengthening agent, a strengthening agent, and a resin to produce proppants with fluorinated polyurethane proppant coating. Additionally, a proppant comprising a proppant particle and a fluorinated polyurethane proppant coating is provided. The fluorinated polyurethane proppant coating includes a strengthening agent, a strengthening agent, and a resin. The fluorinated polyurethane proppant coating coats the proppant particle. Additionally, a method for increasing a rate of hydrocarbon production from a subsurface formation through the use of the proppants is provided.

The present invention relates to an aqueous, solids-containing dipping bath composition for treating reinforcing inserts for rubber products comprising the following components or consisting of these components, (A) at least one blocked MDI mixture, the MDI mixture comprising MDI oligomers of formula (I), n being a whole number from 1 to 8, and MDI monomers; (B) at least one resorcinol-formaldehyde latex; and (C) possibly at least one additive, wherein the dipping bath composition is essentially free of epoxides. ##STR00001##

A rigid polyurethane foam comprises the reaction product of an isocyanate and a thixotropic composition. The thixotropic composition comprises: a first polyether polyoi which is aromatic amine initiated and has ethylene and propylene oxide end capping; a second polyether polyoi having a viscosity at 25 C. of from about 500 to about 15,000 cps; a third polyether polyoi having a viscosity at 25 C. of from about 18,000 to about 60,000 cps and a functionality of from about 5 to about 7; and a hydrofluoroolefin. The thixotropic composition has a viscosity at 25 C. of from about 350 to about 5,000 cps. A method of forming a composite article comprising a substrate and the rigid polyurethane foam includes the steps of providing the thixotropic composition, providing an isocyanate, combining the thixotropic composition and the isocyanate to form a reaction mixture, and applying the reaction mixture to the substrate to form the composite article.