Provided is a latent curing agent, including: porous particles supporting an aluminum chelate compound; and a coating film over surfaces of the porous particles, the coating film containing an aluminum chelate compound and a polymer that contains at least one of a urea bond and an urethane bond, wherein a content of an active aluminum chelate compound is 20% by mass or greater.

Microcapsules encapsulating oily core materials have a shell material of hybrid polyurea and poly(beta-amino esters) (PU/PBAE). The microcapsules may have a single shell of hybrid PU/PBAE, dual shells including hybrid PU/PBAE in an inner shell and PBAE in an outer shell crosslinked and deposited to the inner shell, or multiple shells including PU in an inner shell, hybrid PU/PBAE in a transitioning shell, and PBAE in an outer shell. Formation of the microcapsules includes polymerization between multifunctional amine and multifunctional acrylate to produce a water soluble PBAE; polymerization between polyisocyanate in oil phase and multifunctional amine in aqueous solution to produce PU microcapsule, polymerization between polyisocyanate and the amine moiety of PBAE prepolymer to produce hybrid PU/PBAE microcapsule wall; and polymerization between multifunctional acrylate and primary or secondary amine moiety of the PBAE prepolymer to form a PBAE outer shell.

Provided is a PSA sheet capable of suitably preventing bubble formation caused by outgassing. This invention provides a PSA sheet comprising a PSA layer that forms an adhesive face. In an aging test where the adhesive face is press-bonded to a glass plate and stored at 50° C. for 24 hours, the PSA sheet has at least 5% post-aging non-bonding area Sa, with Sa defined as the ratio of all areas non-bonding to the glass plate relative to the total area of the adhesive face. The non-bonding areas have parts linearly extending along the adhesive face.

Disclosed are microcapsule compositions each comprising a microcapsule suspended in an aqueous phase and a viscosity control agent, wherein the viscosity control agent is an acrylate copolymer, a cationic acrylamide copolymer, or a polysaccharide. Also disclosed are consumer products containing such a microcapsule composition.

Provided is a PSA sheet capable of suitably preventing bubble formation caused by outgassing. This invention provides a PSA sheet comprising a PSA layer that forms an adhesive face. In an aging test where the adhesive face is press-bonded to a glass plate and stored at 50° C. for 24 hours, the PSA sheet has at least 5% post-aging non-bonding area Sa, with Sa defined as the ratio of all areas non-bonding to the glass plate relative to the total area of the adhesive face. The non-bonding areas have parts linearly extending along the adhesive face.

The present invention relates to a process for preparing a polyisocyanate composition containing urethane groups, and to the polyisocyanate compositions containing urethane groups that are obtained or obtainable by this process.

Embodiments of the present disclosure includes an elastomeric polyurethane foam with improved high temperature performance, comprising a reaction product of components including: (a) an isocyanate functional urethane prepolymer derived from one or more prepolymers comprising monomeric diphenylmethane diisocyanate (MDI) and polymeric MDI, and a polyether diol; and (b) an isocyanate-reactive component including: (i) a first polyol in an amount of about 10 to about 70 parts by weight of the isocyanate-reactive component, wherein the first polyol is a propylene oxide or ethylene oxide-capped nominal diol with a number-average molecular weight between about 1000 g/mol and about 9000 g/mol; (ii) a second polyol in an amount of about 0 to about 50 parts by weight of the isocyanate-reactive component, wherein the second polyol is a nominal triol with a high proportion of randomly dispersed ethoxy groups with a number-average molecular weight between about 1000 g/mol and about 8000 g/mol; (iii) a third polyol in an amount of about 0 to about 20 parts by weight of the isocyanate-reactive component, wherein the third polyol is an ethylene oxide-capped nominal tetraol with a number-average molecular weight between about 250 g/mol and about 6000 g/mol; and (iv) a fourth polyol in an amount of about 0 to about 80 parts by weight of the isocyanate-reactive component, wherein the fourth polyol is an ethylene oxide or propylene oxide-capped nominal triol with a number-average molecular weight between about 1000 g/mol and about 13000 g/mol. In one another embodiment, the isocyanate-reactive component also includes an additive package in the amount of about 1 to about 30 that can contain, but is not limited to, blowing agents, catalysts, coloring agents, inorganic filler, and anti-oxidants.

Polymer particles excellent in uniform dispersibility and the use thereof are provided. The polymer particles contain a surfactant, and have a coefficient of variation in the volume-based particle diameter distribution in the range from not less than 13.0% to not more than 25.0%. When 15.0 g of water is added to 5.0 g of the polymer particles so as to disperse the polymer particles in the water by performing a dispersion treatment for 60 minutes using an ultrasonic cleaner, and furthermore when an obtained dispersion liquid is put into a centrifuge tube with an inside diameter of 24 mm so as to be centrifuged, by a centrifugal separator, under conditions that K factor is 6943 and a rotating time is 30 minutes to recover a supernatant, a concentration of non-volatile components in the obtained supernatant is less than 3.5 wt. %.

Stable polyurea microcapsule compositions suitable for encapsulating aldehydes with a low viscosity. Also disclosed are consumer products containing such a composition and its preparation methods.

The laminate adhesive contains a polyisocyanate component and a polyol component. The polyol component contains polyurethane polyol of a reaction product of polyol and a polyisocyanate derivative with an average functional group of more than 2. The polyisocyanate derivative is an araliphatic diisocyanate derivative and/or alicyclic diisocyanate derivative.