The present disclosure describes phosphonium-containing polyurethane compositions, coating compositions, and coated fabric media. In one example, a phosphonium-containing polyurethane composition can include an aqueous liquid vehicle and polyurethane particles. The polyurethane particles can include a polyurethane polymer devoid of end cap groups. The polyurethane polymer can include a polyurethane backbone having a polymerized diamine chain extender forming a portion of the backbone. The polyurethane polymer can also include side chain groups along the polyurethane backbone. The side chain groups can collectively include aliphatic phosphonium salts and polyalkylene oxide groups.

The present invention aims to provide a urethane resin and a heat dissipation component each having excellent thermal conductivity and excellent flexibility. The present invention relates to a curable composition containing: a polyol (A); a polyisocyanate (B); at least one dispersant (C) for inorganic fillers selected from the group consisting of a phosphate ester (C1), a C12-C24 fatty acid (C2), a sucrose fatty acid ester (C3), a sorbitan fatty acid ester (C4), and a glycerol fatty acid ester (C5); and an inorganic filler (D), the curable composition satisfying the following requirements (1) to (3) that (1) the polyol (A) contains a polyalkylene glycol (A1) having a chemical formula weight or number average molecular weight of 1000 or less in an amount of 50% by weight or more based on the weight of the polyol (A); (2) the inorganic filler (D) is contained in an amount of 70 to 97% by weight based on the weight of the curable composition; and (3) the total weight of the dispersant (C) for inorganic fillers is 1 to 5 parts by weight per 100 parts by weight of the inorganic filler (D), the phosphate ester (C1) being represented by the following formula (1):

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The present disclosure relates to compositions A composition comprising a polymerization product of an anionic polysaccharide, a diisocyanate, and a linker, wherein the linker comprises i) an ether group, an ester group, or a combination thereof and, ii) a chain extender comprising a hydroxyl group, a thiol group, an amine group, or a combination thereof. The disclosure further relates to medical devices comprising the aforementioned compositions, and to methods of using the compositions and devices. More particularly, the compositions, devices and methods described herein are useful for preventing protein adhesions in vivo, particularly the Vroman effect.

A solvent-based polyurethane retort adhesive system for producing laminates including: (A) at least one isocyanate compound, Component A, comprising: a blend of: (i) at least one aliphatic-based isocyanate and (ii) at least one aromatic-based isocyanate; and (B) at least one isocyanate-reactive component, Component B, comprising: (i) at least one phosphate ester compound and (ii) at least one polyether polyol having an average molecular weight of less than 1,500 g/mol; a process for producing the above adhesive; a multi-layer laminate product including the above adhesive; and a process for producing a laminate product using the above adhesive.

A resin composition comprises a base resin containing an urethane (meth)acrylate oligomer, a monomer having a phenoxy group, and a photopolymerization initiator, and hydrophobic inorganic oxide particles, wherein the viscosity is 300 mPa.Math.s or more and 4200 mPa.Math.s or less at 45° C. and the content of the monomer having a phenoxy group is 1% by mass or more and 30% by mass or less based on the total amount of the base resin.

There is provided an erosion protective polyurethane elastomer produced from a polyurethane composition with a polyisocyanate component and an isocyanate-reactive component. The polyisocyanate component has a first isocyanate-terminated prepolymer obtained from the reaction of a first polyol with 1,4-bis(isocyanatomethyl cyclohexane) (1,4-H6XDI) or with a mixture of 1,4-H6XDI and a second aliphatic diisocyanate, an aromatic diisocyanate, and/or an arylalkyl diisocyanate, with at least 50 wt. % of diisocyanate used to produce the prepolymer is aliphatic diisocyanate. The isocyanate-reactive component has at least two low molecular weight (Mw<400 g/mol) diols and a second polyol with hydroxyl groups to react with the prepolymer to produce a polyurethane elastomer. The polyurethane composition having a molar ratio of NCO/OH in the range of 1.00-1.50; whereby said polyurethane composition is curable to produce an elastomer having a mechanical strength >20 MPa, an elongation at break >500%, a tensile set <30%, and hydrolytic stability.

There is provided an erosion protective polyurethane elastomer produced from a polyurethane composition with a polyisocyanate component and an isocyanate-reactive component. The polyisocyanate component has a first isocyanate-terminated prepolymer obtained from the reaction of a first polyol with 1,4-bis(isocyanatomethyl cyclohexane) (1,4-H6XDI) or with a mixture of 1,4-H6XDI and a second aliphatic diisocyanate, an aromatic diisocyanate, and/or an arylalkyl diisocyanate, with at least 50 wt. % of diisocyanate used to produce the prepolymer is aliphatic diisocyanate. The isocyanate-reactive component has at least two low molecular weight (Mw<400 g/mol) diols and a second polyol with hydroxyl groups to react with the prepolymer to produce a polyurethane elastomer. The polyurethane composition having a molar ratio of NCO/OH in the range of 1.00-1.50; whereby said polyurethane composition is curable to produce an elastomer having a mechanical strength >20 MPa, an elongation at break >500%, a tensile set <30%, and hydrolytic stability.

The present disclosure relates to acid-blocked alkylaminopyridine catalysts for use in a polyurethane formulation. The polyurethane formulation may include the acid-blocked alkylaminopyridine catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound and a halogenated olefin compound.

A crosslinkable composition is provided including an asymmetric isocyanate, a polyther polyol, and a crosslinker. Polyurethane pressure-sensitive adhesives, articles, and solutions are also provided. The polyurethane pressure-sensitive adhesives have advantageous adhesive properties, low glass transition temperatures, and cohesion following thermal cycling.

A stretchable film includes, in a stacked form: a polyurethane film containing a repeating unit having a fluorine atom; and a polyurethane film containing a repeating unit having a silicon atom. At least one surface of the stretchable film is made of the polyurethane film containing a repeating unit having a fluorine atom. Thus, provided are: a stretchable film having excellent stretchability and strength, with the film surface having excellent water repellency; and a method for forming the stretchable film.