A poly(meth)acrylate urethane polymer, obtained from the reaction of at least one monomeric diisocyanate and a poly(meth)acrylate polyol having an OH number in the range from 50 to 200 mg KOH/g in an NCO/OH ratio of at least 3/1, followed by removal of a majority of the monomeric diisocyanate by means of a suitable separation method, wherein it has an NCO content in the range from 2.5% to 8% by weight, based on the poly(meth)acrylate urethane polymer, and a residual content of unconverted monomeric diisocyanates of not more than 0.5% by weight, and to the use thereof as additive and to moisture-curing polyurethane compositions.

The present invention generally relates to polyurethane foam composition. In one embodiment, the present invention relates to polyurethane foam compositions that have increased and/or improved fire-retardant properties due to the inclusion of one or more liquid and/or solid fire-retardants. In another embodiment, the present invention relates to polyurethane foam compositions that have increased and/or improved fire-retardant properties due to the inclusion of one or more intumescent materials (e.g., expandable graphite (EG)). In still another embodiment, the present invention relates to polyurethane foam compositions that have increased and/or improved fire-retardant properties due to the inclusion of expandable graphite.

The invention relates to a method for reducing water content of an epoxy or/and polyurethane paint dispersion to be prepared in a sealed and pressurized aerosol can which paint dispersion comprises, —free water of an amount W1, —organic solvent(s) of an amount W2,5-epoxy or/and polyurethane resin of an amount W3, —liquefied propellant of an amount W5, —ketone of an amount W6, —blocked hardener (hardener precursor) of the epoxy or/and polyurethane resin of an amount W4, wherein said blocked hardener compounds of said epoxy or/and 10 polyurethane resin is selected from the group comprising of an aldimine, an enamine, an imine, a Mannich base, a Schiff's base, an oxazolidine or a bisoxazol-idine, and mixtures thereof, —adjuvants, —water scavenger(s), —catalytic amount of a weak acid to shift equilibrium of reversible reaction (I) between the free water present in said dispersion and blocked hardener compounds of the epoxy or/and polyurethane resin back to formation of said initial epoxy or polyure-thane blocked hardener compounds and to prevent formation of the epoxy or/and polyurethane hardener amines: expoxy and/or polyurethane hardener+ketones catalyst expoxy and/or polyurethane+free water (amine) hardener precursor (1). The method comprises a step in which before providing organic solvent into the aerosol can its water content is reduced by admixing reactant with sulfonyl isocya-nate functionality as a water scavenger into said organic solvent.

The present invention discloses a polyether derivative and a preparation method therefor. The polyether derivative is:

##STR00001##

the polyether derivative of the present invention has a functional group introduced into the polyether chain, such that the derivative has an ether bond, an ester group, an amino group, a heteroatom, and other groups, enabling the derivative to have various functions such as anti-oxidation, anti-wear functionality, and anti-rust functionality, either without requiring additional additives or requiring fewer additional additives used to make up for the lack of base oil functions.

Disclosed is a moisture reactive, polyurethane hot melt adhesive composition that is the reaction product of a first mixture comprising heat stabilizer and only one of polyester polyol or filler, wherein the first mixture can optionally comprise polyether polyol and/or thermoplastic polymer but does not comprise all of heat stabilizer and polyester polyol and filler; polyisocyanate; and a second mixture comprising the other of polyester polyol or filler not present in the first mixture; wherein the second mixture can optionally comprise polyether polyol and/or thermoplastic polymer. The moisture reactive hot melt adhesive can also comprise an additive selected from additional catalyst, additional filler, adhesion promoter, plasticizer, colorant, rheology modifier, flame retardant, UV pigment, nanofiber, defoamer, compatible tackifier, anti-oxidant, stabilizer, thixotrope and mixtures thereof.

An adhesive bond between at least one thermoplastic and an elastomer composition containing at least one polyether having blocked hydroxyl groups as plasticizer. With the adhesive bond, it is possible to bond thermoplastics such as polycarbonate or polystyrene in particular to the elastomer composition essentially without stress cracking and hence reliably and permanently.

A method of preparing polyurethane hot melt adhesive with high temperature resistance generally includes the following steps: (1) adding isocyanate with a silane modifier in a reactor in an inert atmosphere, heating and stirring, then adding chemical dehydrant into the reactor and mixing evenly; (2) adding dehydrated diluent and tackifier resin to the reactor while maintaining the inert atmosphere and heating, adding dehydrated polyester polyol and polyether polyol, stirring, and allowing to react at constant temperature for a predetermined time period; (3) adding dehydrated polyether amine, stirring, and heating; and (4) adding a catalyst, vacuumizing, discharging materials and packaging the materials in an airtight container. The hot melt adhesive made according to the new method has a variety of improved physical and mechanical properties, including improved high temperature resistance, cold and heat shock resistance, drop resistance toughness, high adhesive strength, salt spray resistance and moisture and heat aging resistance.

A method of preparing polyurethane hot melt adhesive with high temperature resistance generally includes the following steps: (1) adding isocyanate with a silane modifier in a reactor in an inert atmosphere, heating and stirring, then adding chemical dehydrant into the reactor and mixing evenly; (2) adding dehydrated diluent and tackifier resin to the reactor while maintaining the inert atmosphere and heating, adding dehydrated polyester polyol and polyether polyol, stirring, and allowing to react at constant temperature for a predetermined time period; (3) adding dehydrated polyether amine, stirring, and heating; and (4) adding a catalyst, vacuumizing, discharging materials and packaging the materials in an airtight container. The hot melt adhesive made according to the new method has a variety of improved physical and mechanical properties, including improved high temperature resistance, cold and heat shock resistance, drop resistance toughness, high adhesive strength, salt spray resistance and moisture and heat aging resistance.

Disclosed is a composition for improving the corrosion resistance of metals coated with 2K coatings. The composition comprises the reaction product of an aromatic sulfonyl isocyanate and an alcohol or polyol monomer. Also disclosed is a method of improving the corrosion resistance of metals coated with 2K coatings by the addition of a sulfonyl urethane-alcohol composition reaction product of an aromatic sulfonyl isocyanate and a mono-alcohol or poly-alcohol.

Disclosed is a composition for improving the corrosion resistance of metals coated with 2K coatings. The composition comprises the reaction product of an aromatic sulfonyl isocyanate and an alcohol or polyol monomer. Also disclosed is a method of improving the corrosion resistance of metals coated with 2K coatings by the addition of a sulfonyl urethane-alcohol composition reaction product of an aromatic sulfonyl isocyanate and a mono-alcohol or poly-alcohol.