A self-repairing polyurethane resin material is produced by reaction of a polyisocyanate compound consisting of aliphatic polyisocyanate and/or araliphatic polyisocyanate with an active hydrogen group-containing compound, used for producing polyurethane resin having self-repairing properties, has an isocyanate group at its molecular terminal, contains an allophanate group and an isocyanate trimer, and the mole ratio of the allophanate group relative to the isocyanate trimer is 0.1 to 20.

An object of the present invention is to provide a golf ball showing improved controllability on approach shots for less than 40 yards, in particular, on approach shots around the green (about 10 yards to 20 yards) and improved controllability on approach shots from the rough, and showing excellent shot feeling. The present invention provides a golf ball comprising a golf ball body and a paint film covering the golf ball body, wherein a loss tangent tan δ has a peak temperature of 50° C. or less and a peak height of less than 0.8, obtained by measuring dynamic viscoelasticity of the paint film under the following conditions: <Measuring conditions> Measuring mode: tensile mode Measuring temperature range: from −100° C. to 150° C. Temperature rising rate: 4° C./min Oscillation frequency: 10 Hz Measuring strain: 0.1%.

A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.

A thermal plastic polyurethane with a stress more than 2.5 MPa, its preparing formulation and making process are disclosed. In particular, the thermal plastic polyurethane with a stress more than 2.5 MPa is prepared from a formulation comprises a polycarbonate derivative and a chain extender.

The present invention provides a biocompatible and biodegradable elastomer, comprising a hard segment and a soft segment. The hard segment is formed by reacting diisocyanate and a chain extender; and the soft segment is comprising a biodegradable oligomer diol, wherein the biodegradable oligomer diol is selected from the group consisting of polycaprolactone diol, polyethylene butylene adipate diol (PEBA diol), poly-L-lactic acid diol (PLLA diol), polylactic acid diol and any combination thereof. The biocompatible and biodegradable elastomer of present invention can be used to produce vascular graft, cell carrier, drug carrier or gene carrier.

Polyol premixes and thermally insulating rigid polyurethane foams, such as those that can be used as a thermal insulation medium in the construction of refrigerated storage devices, are disclosed. A polymer polyol having a OH number of greater than 260 mg KOH/g is utilized. The resulting polyurethane foams can exhibit improved thermal insulation properties without sacrificing other important physical and processing properties.

The present disclosure provides a two-component solvent-less adhesive composition. The two-component solvent-less adhesive composition contains the reaction product of (A) an isocyanate component containing the reaction product of (i) an isocyanate monomer and (ii) a first dimer acid polyester polyol; and (B) a polyol component containing (i) a second dimer acid polyester polyol and (ii) optionally, a polyol selected from a polyether polyol, a polyester polyol, and combinations thereof. The two-component solvent-less adhesive composition contains from 15 wt % to 45 wt % units derived from dimer acid, based on the total weight of the two-component solvent-less adhesive composition.

The present disclosure provides a crosslinking agent, the preparation process and uses thereof, a hydrogel and a biodegradable cryogel including the crosslinking agent.

The invention relates to polymers containing silane groups, to a method for their production and to their use as a component of curable compositions, in particular of moisture-curing sealants, adhesives or coatings that can be applied at ambient temperature, or of hot-melt adhesives containing silane groups. The polymers containing silane groups are obtained in particular by means of a special hydroxysilane which can be produced in particular from the reaction of lactides with aminosilanes.

Disclosed are processes for in-mold coating of a plastic substrate. The processes include: (a) molding a plastic substrate in a first mold cavity of a mold comprising at least two cavities to form a molded plastic substrate; (b) introducing the molded plastic substrate into a second mold cavity of the mold; (c) introducing a coating composition into the second mold cavity containing the molded plastic substrate in order to coat the substrate, the coating composition comprising: (i) a polymer comprising isocyanate-reactive groups; and (ii) a polyisocyanate; (d) curing the composition in the second mold cavity; and (e) opening the mold cavity.