Polyurethanes containing at least one bisphosphonate group, as well as related compositions, articles, and methods, are disclosed.

Polyurethanes containing at least one bisphosphonate group, as well as related compositions, articles, and methods, are disclosed.

The polymer comprises units of formula (I) and of formula (Ibis), being comprised the molar ratio between units (I) and (Ibis) comprised from 1.0:0.2 to 1.0:0.8, and wherein R.sub.4 are independently selected from radicals of formula (II), (III), and (IV), R.sub.1 and R.sub.1′ are independently selected from: —H, (C.sub.1-C.sub.20)alkyl, (C.sub.5-C.sub.14)aryl, —OR.sub.5, —(CO)R.sub.6, —O(CO)R.sub.7, —(SO)R.sub.8, —NH—CO—R.sub.9, —COOR.sub.10, —NR.sub.11R.sub.12, —NO.sub.2, and halogen; R.sub.2, R.sub.2′, R.sub.3, and R.sub.3′ are —H; P is a polymeric chain, R.sub.5 to R.sub.12 are independently selected: —H, (C.sub.1-C.sub.20)alkyl, and (C.sub.5-C.sub.14)aryl;R.sub.13 and R.sub.14 are independently selected from (C.sub.1-C.sub.5)alkyl, and (C.sub.5-C.sub.14)aryl;, m is from 3 to 4; n is from 1 to 2; and p is from 1 to 2 provided that n+m+p sums 6; the polymer comprising from 5 to 25 weight % of urea moieties, and having H-bonding and pi-pi staking interactions between the urea groups, and a tensile strength comprised from 3 to 15 MPa.

Disclosed are a polyurethane composition, a molded article, and a vehicle comprising the polyurethane composition or the molded article. The polyurethane composition comprises a polyol composition (A) in which polyether polyol (a1) and polymer polyol (a2) are mixed at a predetermined amount, an isocyanate composition (B) obtainable by polymerizing polyether polyol (b2) and an isocyanate composition (b1) that comprises i) methylene diphenyl isocyanate (M-MDI) and ii) polymethylene diphenyl isocyanate (P-MDI). As such, the molded article such as a vehicle seat pad can be manufactured with improved static and dynamic comfort.

A thermosetting resin composition which contains a polyurethane resin and a curing agent, the polyurethane resin including a constitutional unit derived from an alicyclic diol and having an acid value of 10 to 35 mgKOH/g.

A thermosetting resin composition which contains a polyurethane resin and a curing agent, the polyurethane resin including a constitutional unit derived from an alicyclic diol and having an acid value of 10 to 35 mgKOH/g.

The invention relates to polyurethanes obtainable by reaction of (a) polyisocyanates A selected from modified or unmodified 4,4′-methanediphenyl diisocyanate, higher nuclear homologs of 4,4′-methanediphenyl diisocyanate, isocyanated groups containing prepolymers based on 4,4′methandiphenyl diisocyanate, and mixtures thereof, with (b) compounds having at least two isocyanate-reactive hydrogen atoms, comprising (b1) block copolymers formed from a polybutadienol and a cyclic ester as component B1, and (b2) low molecular weight extenders or crosslinkers each having a molecular weight of 62 to 500 g/mol as component B2.

A prepolymer comprising an acid group is made by a process comprising the step of contacting: (i) a di-isocyanate, (ii) a polyol containing an acid group, and (iii) a polyol without an acid group, the contacting conducted under reaction conditions and in a solvent consisting essentially of: (A) a first component consisting essentially of at least one glycol ether ketone, and (B) optionally, a second component consisting of at least one aprotic glycol ether. The prepolymer is useful in the preparation of water-based polyurethane dispersions.

The present invention provides compositions comprising the reaction product of an aliphatic diisocyanate, and a reactive intermediate made from one selected from the group consisting of oxazolidinones, benzoic sulfimides (saccharins), 1H-indole-2,3-diones (isatins), succinamides, N-hydroxysuccinamides, 4-hydroxy-3-methoxybenzaldehydes (vanillins), α-ketoamides, piperazines, benzofuranones, 3,4-dihydroxycyclobut-3-ene-1,2-diones (squaric acids), squaric acid esters, α-ketoamides, anilines, and α-ketoamide, phenols. The aliphatic diisocyanate comprises one selected from the group consisting of isocyanurates, biurets, iminooxadiazine diones, urethanes, uretdiones, carbodiimides, and allophanates. The resulting compositions may be useful in producing coatings, adhesives, sealants, castings, composites and films having durability, color stability, high gloss, and chemical resistance properties similar to those made from polyurethane.

An object which the present invention is to achieve is to provide a urethane composition capable of providing a molded product having excellent heat resistance and high hardness. The present invention is to provide a urethane composition containing a main agent (i) including a urethane prepolymer having an isocyanate group obtained by allowing a polyol (A) and a polyisocyanate (B) to react with each other, and a curing agent (ii), in which the polyol (A) includes a polyether polyol (a1) obtained by polymerizing an aromatic compound (a1-1) having two or more active hydrogen atom-containing groups and an alkylene oxide (a1-2), and a polishing material obtained by curing the urethane composition with heat, followed by slicing.