The use of an aldehyde mixture containing 70 to 95 wt % of aldehydes of formula (I) and 5 to 30 wt % of alkylbenzene compounds not corresponding to formula (I) as a blocking agent for amines results in odorless, especially economically blocked amines, which at room temperature are typically liquid and have a surprisingly low viscosity. Such blocked amines are particularly suitable as latent hardeners in isocyanate-group-containing compositions. Single-component moisture-curing polyurethane compositions formulated therewith are surprisingly stable in storage, can be used for low-emission applications without odor problems and do not trigger any problems with plasticizer migration. Surprisingly, said compositions even have advantages over corresponding compositions having latent hardeners based on purified aldehydes of formula (I), in particular with respect to viscosity, storage stability and especially strength.

The present invention relates to the use of metal salts of polymeric alcohols as storage-stable thermolatent catalysts for the manufacture of isocyanurate and polyisocyanate polymers.

The present invention relates to gel compositions comprising a polyurethane elastomer. The polyurethane elastomer is formed from the reaction of a polyol, a polyisocyanate, and optionally a polyurethane reaction catalyst, optionally in the presence of a topically acceptable carrier fluid. In some embodiments, the gel composition comprises a personal active ingredient or a healthcare active ingredient, which may be incorporated into the gel composition via a pre-load method or a post-load method. Also provided herein are gel pastes and topical formulations comprising the polyurethane elastomers, and methods of making the same.

Provided are a polycarbodiimide compound that enables an aqueous resin composition capable of forming a coating (layer) having water resistance and adhesion that can withstand use for food packaging to be obtained, an aqueous resin composition containing the polycarbodiimide compound, and a food packaging having a layer formed of the aqueous resin composition. A polycarbodiimide compound (A) represented by formula (1) below,

##STR00001##

wherein R.sup.1 represents a residue obtained by removing a functional group capable of reacting with isocyanate from a hydrophilic compound having the functional group capable of reacting with isocyanate, R.sup.2 represents a divalent residue obtained by removing an isocyanate group from an aliphatic diisocyanate compound, and R.sup.3 represents a divalent residue obtained by removing a hydroxyl group from a glycol compound having 2 or 3 carbon atoms; X represents a group that is formed by reaction between the hydrophilic compound and the aliphatic diisocyanate compound; n1 represents a number of 1 to 10, n2 represents a number of 1 to 10, and p represents a number of 2 to 4; and a plurality of R.sup.1 and R.sup.2 each may be the same or different.

Described is a curable composition comprising a silane modified polymer; an epoxy resin terminated with epoxy terminal group; a compatibilizer having at least one silane group and at least one epoxy terminal group or at least one nitrogen-containing groups; and optionally a hardening agent; wherein the composition further optionally comprises at least one of a nitrogen-containing unsaturated heterocyclic compound catalyst and a nitrogen-containing phenol catalyst. The curable composition exhibits high hermeticity, fast curing speed, quick adhesion build up, dry surface and strong adhesion strength. A method for applying the curable composition on the surface of a substrate is also provided.

Disclosed herein are methods of making an adhesive composition, the methods comprising providing a polyurethane acrylate and combining with a vinyl ether and co-curing the combination to form an adhesive composition, wherein after curing the adhesive composition has a modulus at −20° C. of less than about 10.0 mPa and a creep recovery of greater than about 50%. Also disclosed are the resulting adhesive compositions.

Disclosed is a coating composition that generally includes a waterborne alkyd resin including urethane groups and a crosslinking acrylic latex resin. An alkyd resin and an acrylic latex resin can be included in a composition in relative amounts to yield a cured coating that has a higher pendulum hardness than that of a coating formed from an otherwise identical composition that excludes the acrylic latex resin. The composition can be formulated such that solids of said waterborne urethane alkyd resin and solids of said crosslinking acrylic latex resin are present in a mass ratio ranging from 20:80 to 80:20 with respect to one another A method of preparing a coating composition generally includes blending relative amounts of an alkyd resin and an acrylic latex resin.

The present invention is directed to a curable composition including: an isocyanate-functional prepolymer; an epoxy-containing component present in an amount of at least 10 percent by weight of the composition; and a latent curing agent having an ability to react with at least one of the isocyanate-functional prepolymer and the epoxy-containing component upon exposure to an external energy source. The present invention is also directed to methods of making the compositions, methods of coating a substrate, methods of adhering substrates and coated substrates.

Provided is an aqueous coating composition that can exhibit high coating film performance even when cured at a relatively low temperature. The present invention pertains to an aqueous coating composition comprising (A) a hydroxyl group-containing resin and (B) a blocked polyisocyanate compound. The weight average molecular weight of the blocked polyisocyanate compound (B) is in a range of 20,000-200,000.

The present disclosure relates to a primer coating material composition, obtainable by combining at least two components (A) and (B) of a coating material system, which are different from one another and present separately from one another, with component (B) being nonaqueous and including at least one polyisocyanate having more than two free isocyanate groups, at least one organic solvent, and, further, at least one Si-containing compound which contains at least one hydrolyzable radical and at least one non-hydrolyzable organic radical, for at least partial application to at least one optionally pretreated surface of a plastics substrate, to a method for producing a corresponding coating on such a substrate, and to a method for at least partially coating at least one surface of a plastics substrate with a multicoat paint system.