Adhesive sealant composition comprising at least one moisture-crosslinkable prepolymer and, as plasticizing agent, an ester compound of formula (I): ##STR00001##
in which: R.sup.1, R.sup.2 and R.sup.3 represent an oxycarbonylalkyl radical of 4 to 20 carbon atoms; R.sup.4 represents a hydrogen atom, a methyl or ethyl radical or else a radical: —CH.sub.2—R.sup.5 in which R.sup.5 represents an oxycarbonylalkyl radical of 4 to 20 carbon atoms.

The invention pertains generally to a low-pressure (100-250 psi) process of seaming adjacent seams of artificial turf using a one-component or a two-component polyurethane adhesive using an apparatus which employs a payoff spool of base material in the front of the apparatus and an activation trigger adjacent the handle to begin the application of polyurethane spray foam adhesive by connectivity between the application trigger and the foam spray gun trigger.

A polyurethane composition is provided. The polyurethane composition comprises one polyisocyanate component comprising at least one aromatic polyisocyanate compound and/or isocyanate end-capped prepolymer formed by the reaction of said at least one aromatic polyisocyanate compound and at least one first polyol; at least one second polyol; and a crosslinker having at least one nitrogen atom and at least one secondary and/or tertiary hydroxyl group. The polyurethane product prepared by using the polyurethane composition can achieve improved operation time, aging resistance, weathering resistance, color stability, processability, and storage stability. A method for preparing the polyurethane product and a method for improving the performance property of the polyurethane product are also provided.

The combined use of polyol esters and cationic polyelectrolytes as additives in cosurfactant-containing aqueous polymer dispersions for production of porous polymer coatings, preferably for production of porous polyurethane coatings, is described.

The present specification relates to a polyurethane-based adhesive composition, a surface protective film comprising the same, a method for preparing a surface protective film, and a method for manufacturing an organic light emitting electronic device.

The present invention relates to a composition for forming an environmentally friendly polyurethane foam, the composition having improved storage stability, air permeability, and anti-oxidation characteristics and to a method for manufacturing a polyurethane foam and, more specifically, to an isocyanate pre-polymer prepared by reaction of a polyisocyanate and a polyol component comprising a bio-polyol, to a composition for forming an environmentally friendly polyurethane foam, the composition having improved storage stability, air permeability, and anti-oxidative characteristics by comprising the pre-polymer as one component, to a method for manufacturing a polyurethane foam using the same, and to an environmentally friendly polyurethane foam manufactured thereby.

This organopolysiloxane which has a constituent unit represented by general formula (1) and a group represented by general formula (2), said group being directly bonded to a silicon atom, enables a curable composition containing a polyisocyanate compound to achieve a good balance between fast curing properties and storage stability, and enables the achievement of a cured product that has excellent hardness, heat resistance and wet heat resistance.

##STR00001##

(In formula (1), each of R.sup.1A and R.sup.1B independently represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an aryl group having from 6 to 10 carbon atoms; and A.sup.1 represents an unsubstituted or substituted divalent hydrocarbon group having from 1 to 20 carbon atoms and optionally having a hetero atom.)

R.sup.2O—  (2)

(In formula (2), R.sup.2 represents a hydrogen atom, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, or an unsubstituted or substituted aryl group having from 6 to 10 carbon atoms.)

The present disclosure provides a two-component polyurethane adhesive composition and a bonding method thereof. The two-component polyurethane adhesive composition includes A) a polyol component, and B) an isocyanate component. The polyol component includes A1) one or more polyether polyols, and the isocyanate component includes B1) a first isocyanate prepolymer, wherein the first isocyanate prepolymer is polymerized from isocyanate and a non-linear chain extender. The two-component polyurethane adhesive composition of the present disclosure has good mechanical properties, in particular, high G modulus and high elongation. The polyol component in the two-component polyurethane adhesive composition has good phase stability, and good miscibility with the isocyanate component. The two-component polyurethane adhesive composition of the present disclosure can be used for the production and manufacture of mechanical parts such as automobile components.

A compound made by copolymerizing a poly(N-isopropylacrylamide) chain transfer agent, an acrylate salt, and a polyethylene glycol diacrylate. A compound made by copolymerizing a polyethylene glycol, a glycerol ethoxylate, and an aliphatic diisocyanate.

A liquid crystalline polyurethane elastomer is produced by reacting an isocyanate component, a high-molecular-weight polyol component and a mesogenic diol represented by formula (1), and having a crosslinking site that is introduced by a tri-functional or higher isocyanate in the isocyanate component and/or a high-molecular-weight polyol having a number average molecular weight of 400 or more and less than 7000 and having three or more hydroxy groups, in the high-molecular-weight polyol component, wherein the melting point of a mesogenic unit does not exist in a temperature range lying between the glass transition temperature (Tg) and the (liquid crystal phase)-to-(isotropic phase) transition temperature (Ti) of the polyurethane elastomer, and a liquid crystal is developed at a temperature between the Tg and the Ti. (In the formula, X represents an alkylene group having 3 to 20 carbon atoms; and Y represents a single bond, —N═N—, —CO—, —CO—O— or —CH═N—). ##STR00001##