The invention relates to a method for producing a polyurethane foam, wherein a mixture having the following is discharged from a mixing head through a discharge line: A) a component reactive toward isocyanates; B) a surfactant component; C) a blowing agent component selected from the group comprising linear, branched, or cyclic C1 to C6 hydrocarbons, linear, branched, or cyclic C1 to C6 fluorocarbons, N2, O2, argon, and/or CO2, wherein the blowing agent C) is present in the supercritical or near-critical state; and D) a polyisocyanate component. The component A) has a hydroxyl value=100 mg KOH/g and =1000 mg KOH/g. The blowing agent component C) is present at least partially in the form of an emulsion, and means provided with an opening or several openings are arranged in the discharge line in order to increase the flow resistance during the discharge of the mixture comprising A), B), C), and D), wherein the cross-sectional area of the opening or the sum of the cross-sectional areas of all openings is =0.1% and =99.9% of the inner cross-sectional area of the discharge line.

A polyester polyol comprising at least one esterified unit of formula (I) ##STR00001##
wherein L is a difunctional aliphatic group having from two to six carbon atoms and R is a C.sub.1-C.sub.4 alkyl group.

There are provided a silyl-terminated resin composition and a method for producing the same, the silyl-terminated resin composition being superior in storage stability before curing and providing a cured product which has a low initial modulus and can maintain the low modulus even after a heat-accelerated test. The silyl-terminated resin composition comprises a surface-treated calcium carbonate and a silyl-terminated resin, wherein the surface-treated calcium carbonate is obtained by surface-treating calcium carbonate having a BET specific surface area in the range of 1 m.sup.2/g to 60 m.sup.2/g with a fatty acid, and has an alkali metal content in the range of 500 μg/g to 2000 μg/g and the free fatty acid as determined by ethanol extraction in the range of 1.8 to 2.5% by mass.

The present invention provides a polyaspartic composition comprising a reaction product of a polyamine and a Michael addition receptor reacted in the presence of a catalyst comprising a phenolic compound, with the proviso that the phenolic compound is not a phenol which is substituted with tert-butyl groups in both ortho positions to the oxygen. Suitable phenolic compounds include phenols, phenolic aldehydes, alkylphenols, benzenediols, cashew nut oil, and combinations thereof. Coatings, adhesives, sealants, composites, castings, and films comprising a polyurea composition may be made by reacting a polyisocyanate with the inventive polyaspartic composition. In particular, floor coatings made with the inventive polyaspartic composition have an elongated work time and a short walk-on time compared to current floor coatings.

The present invention relates to a poly(ester-urethane), to a poly(ester-urea-urethane), and also to aqueous dispersions of these and to their uses in aqueous coatings, adhesives or sealants, in particular as binder in paints or varnishes.

The invention relates to a coating composition comprising: a) at least one alkyd binder with an oil content of at least 45 wt % and at most 85 wt %, a modified alkyd binder, or a combination thereof; b) at least one amine or imine component selected from the group comprising: polyaspartic acids and esters thereof, (meth)acrylate/aspartate amines, aldimines, ketimines, and combinations thereof; and c) at least one isocyanate compound.

Some variations provide a reworkable ionomer composition comprising: a polymer containing a plurality of ionic monomers disposed in a chain backbone of the polymer, wherein the ionic monomers have a monomer charge polarity that is either positive or negative; and a plurality of ionic species disposed within the chain backbone of the polymer, wherein the ionic species have opposite charge polarity compared to the monomer charge polarity, wherein the ionic species and the ionic monomers are ionically bonded, and wherein the ionic species are capable of undergoing a reversible oxidation-state transition of at least +1 or −1 when in the presence of a redox reagent. The polymer may be selected from the group consisting of polyurethanes, polyacrylates, polyamides, polyesters, polyureas, polyurethane-ureas, polysiloxanes, polycarbonates, and combinations thereof. Many options for ionic monomers and ionic species are disclosed. These reworkable ionomers are useful for many commercial applications, including coatings and polymer parts.

Disclosed are a polyurethane elastic fiber with a flame retardant function and a preparation method thereof. The polyurethane elastic fiber is prepared by using a polyether diol containing phosphorus elements or a polyester diol containing phosphorus elements as a raw material to react with 4,4′-diphenylmethane diisocyanate to prepare a prepolymer, extending the chain using an organic amine to obtain a polyurethane solution, and dry spinning with the polymer solution to prepare the polyurethane fiber. The limit oxygen index of the prepared polyurethane fiber was between 25% and 32%.

This invention provides durable, low-ice-adhesion coatings with excellent performance in terms of ice-adhesion reduction. Some variations provide a low-ice-adhesion coating comprising a microstructure with a first-material phase and a second-material phase that are microphase-separated on an average length scale of phase inhomogeneity from 1 micron to 100 microns. Some variations provide a low-ice-adhesion material comprising a continuous matrix containing a first component; and a plurality of discrete inclusions containing a second component, wherein the inclusions are dispersed within the matrix to form a phase-separated microstructure that is inhomogeneous on an average length scale from 1 micron to 100 microns, wherein one of the first component or the second component is a low-surface-energy polymer, and the other is a hygroscopic material. The coatings are characterized by an AMIL Centrifuge Ice Adhesion Reduction Factor up to 100 or more. These coatings are useful for aerospace surfaces and other applications.

The present invention provides a thermoplastic polyurethane (TPU) having a glass transition temperature between an ambient temperature and normal body temperature, wherein the TPU contains dicarboxyphenyl polyester structure represented by Formula 1 or 10-(2,3-dicarboxypropyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide n(DOPO-ITA) polyester structure represented by Formula 2. The present invention also provides a polyester polyol containing DOPO-ITA polyester structure represented by Formula 2, a molar percentage of the 10-(2,3-dicarboxypropyl)-9,10-dihydro-9-oxa-10-oxide polyester structure in the whole polyester polyol ranges from 30% to 70%. The present invention further provides an article thereof. ##STR00001## in Formula 1, R is C2 to C8 alkylene group or CH.sub.2CH.sub.2OCH.sub.2CH.sub.2; ##STR00002## in Formula 2, R is C2 to C8 alkylene group or CH.sub.2CH.sub.2OCH.sub.2CH.sub.2.