Provided is an oil gel comprising a chain polyurethane (A) and a paraffin based oil (B), wherein the chain polyurethane (A) is a chain polyurethane (A1) formed by polymerization of a chain diol (x) and a diisocyanate (y), and the paraffin based oil (B) is a paraffin based oil (B1) having a kinetic viscosity at 40° C. of 20 mm.sup.2/s or more and 100 mm.sup.2/s or less, and the chain polyurethane (A1) is included at a proportion of 10% by mass or more and 50% by mass or less based on the total amount of the chain polyurethane (A1) and the paraffin based oil (B1). Also provided is a pressure proof material for protecting an electronic device.

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′-methanediphenyl 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.

An ink jet ink composition which is an aqueous ink includes a resin dispersion, in which the resin dispersion is a polyurethane resin dispersion formed of a polyurethane resin (U) obtained by reacting an active hydrogen atom-containing component (A) containing a high-molecular-weight polyol component (a1) having a number-average molecular weight of 500 or more and an organic polyisocyanate component (B), and the high-molecular-weight polyol component (a1) includes a polyolefin polyol (a11) having a constituent unit represented by General Formula (1) and/or a constituent unit represented by General Formula (2), and a polyester polyol (a12) having a constituent unit represented by General Formula (3).

A method of preparing a thermoplastic polyurethane includes reacting specific amounts of a hydrogenated polydiene diol, a poly(alkylene oxide) diol, a chain extender, and a diisocyanate in the presence of a solvent. The thermoplastic polyurethane exhibits a desirable balance of tensile strength and tensile elongation. It is useful for fabricating foams, films, fibers, fabrics, coatings, adhesives, automotive instrument panels, power tool casings, casings for mobile electronic devices, sporting goods, clothing, footwear, gloves, condoms, and medical devices, among other articles.

The present invention relates to a polyurethane laminating adhesives, methods for producing a multilayer laminate by laminating at least two films with a polyurethane laminating adhesive, and multilayer laminates obtainable by these methods wherein the polyurethane laminating adhesive comprises an NCO-terminated polyurethane prepolymer obtainable by reacting a polyol mixture comprising: 0.1 to 20.0 wt % relative to the total weight of the polyol mixture of at least one polybutadiene polyol; and 5.0 to 99.9 wt % relative to the total weight of the polyol mixture of at least one polyether polyol, wherein the at least one polyether polyol comprises at least one polyether polyol with a number average molecular weight M.sub.n in the range of >1000 g/mol to 10000 g/mol; with at least one polyisocyanate, wherein the at least one polyisocyanate is used in an amount such that the isocyanate groups are present in molar excess relative to the hydroxyl groups of the polyol mixture. Also encompassed are the use of the described adhesives for laminating two or more films, and the multilayer laminates obtainable by the described methods.

Disclosed herein are tread rubber compositions containing a specified polyurethane, tires containing a tread made from the rubber compositions, and related methods of improving the wet and dry traction of a tire tread by using the polyurethane-containing rubber compositions. The polyurethane includes a saturated hydroxy-functionalized polydiene segment as diol.

Provided is a polyurethane gel composition containing A and B below. Here, A represents a polyurethane obtained by reaction of (a) a hydrogenated polybutadiene having isocyanate groups at the terminals and (b) a glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), or A represents a polyurethane obtained by reaction of (c) a hydrogenated polybutadiene having hydroxyl groups at the terminals, (d) a diisocyanate compound, and the (b) glycol represented by HO—R.sub.3—OH (wherein R.sub.3 represents a linear or branched C2 to C6 alkylene group optionally having an ether bond), and B represents an oil agent. The polyurethane gel composition of the present invention is particularly useful as a raw material for cosmetics since a film of an oil-soluble gel obtained using the polyurethane gel composition is exceptionally excellent in any point of transparency, high gloss, elasticity, and resilience.

A polymeric material includes a polyisobutylene-polyurethane block copolymer. The polyisobutylene-polyurethane block copolymer includes soft segments, hard segments, and end groups. The soft segments include a polyisobutylene diol residue. The hard segments include a diisocyanate residue. The end groups are bonded by urea bonds to a portion of the diisocyanate residue. The end groups include a residue of a mono-functional amine.

A hydroxyl-functionalized polybutadiene polyurethane hotmelt prepolymer that comprises the chemical reaction product of at least one polybutadiene diol, at least one chain extender having a hydroxyl functionality of two and a molecular weight of less than or equal to 300 g/mol and optionally at least one polybutadiene polyol that has a number-average mean functionality between greater than 2.0 and less than or equal to 3.0 with at least one aliphatic or alicyclic diisocyanate, is thermally vulcanizable, and at room temperature is sufficiently solid or high-viscosity that it can be rolled into a roll as a film applied to a carrier without flowing out or being squeezed out on the side.

The present invention provides a photocurable resin composition that has good fabricability, and that exhibits superior flexibility, fracture resistance, and water resistance in the form of a cured product. The present invention relates to a photocurable resin composition comprising: a urethanized (meth)acrylic compound (A); a mono(meth)acrylic acid ester compound (B) containing no urethane bond; and a photopolymerization initiator (C), the urethanized (meth)acrylic compound (A) being a (meth)acrylate comprising, per molecule, at least one kind of structure selected from the group consisting of a polyester, a polycarbonate, a polyurethane, a polyether, a poly-conjugated diene, and a hydrogenated poly-conjugated diene; and a urethane bond, the mono(meth)acrylic acid ester compound (B) containing no urethane bond comprising at least one selected from the group consisting of a mono(meth)acrylic acid ester compound (b-I) represented by general formula (I), and a mono(meth)acrylic acid ester compound (b-II) represented by general formula (II).