Polyureas made from amino-functional alkoxysilanes, polyisocyanates, and polyfunctional amino- and/or hydroxyl compounds. The polyureas may be moisture-cured in a 1K system or be included in a 2K system with amino and epoxy or acrylate compounds.

A reinforcing method and structure for a steel structure and an elastic layer forming material for reinforcing a steel structure are provided that can prevent a reinforcing effect from being lowered by direct sunlight, can obtain a sufficient reinforcing effect, and can prevent a fiber sheet from being peeled away from a steel structure surface before the fiber sheet is torn. The reinforcing method for a steel structure, in which a fiber sheet including reinforcing fibers is bonded to a surface of the steel structure to integrate the fiber sheet with the steel structure, includes (a) a step of applying and hardening a polyurea resin putty to the surface of the steel structure to form an elastic layer, and (b) a step of bonding the fiber sheet to the surface of the steel structure having the elastic layer formed thereon with an adhesive agent.

A reinforcing method and structure for a steel structure and an elastic layer forming material for reinforcing a steel structure are provided that can prevent a reinforcing effect from being lowered by direct sunlight, can obtain a sufficient reinforcing effect, and can prevent a fiber sheet from being peeled away from a steel structure surface before the fiber sheet is torn. The reinforcing method for a steel structure, in which a fiber sheet including reinforcing fibers is bonded to a surface of the steel structure to integrate the fiber sheet with the steel structure, includes (a) a step of applying and hardening a polyurea resin putty to the surface of the steel structure to form an elastic layer, and (b) a step of bonding the fiber sheet to the surface of the steel structure having the elastic layer formed thereon with an adhesive agent.

The invention relates to foamed shaped parts provided with reinforcing materials and made from polyurethane urea elastomers, and to the use thereof.

Rotational cast polyurethane composition prepared from a prepolymer composition comprising: a) an isocyanate-terminated polyurethane prepolymer; and b) a curative agent comprising i) a polyol; ii) an aromatic diamine; iii) a thixotropic aliphatic amine; and iv) a thixotropic colloidal additive, wherein the prepolymer comprises a product produce by the reaction of a polyol with an organic diisocyanate monomer comprising 4,4-diisocyanato diphenylmethane (MDI), and which prepolymer comprises less than 1.0% by weight of free MDI monomer, based on the total weight of the prepolymer, exhibits a range of enhanced physical properties compared to those obtained from prepolymers comprising a higher level of free MDI monomer.

Rotational cast polyurethane composition prepared from a prepolymer composition comprising: a) an isocyanate-terminated polyurethane prepolymer; and b) a curative agent comprising i) a polyol; ii) an aromatic diamine; iii) a thixotropic aliphatic amine; and iv) a thixotropic colloidal additive, wherein the prepolymer comprises a product produce by the reaction of a polyol with an organic diisocyanate monomer comprising 4,4-diisocyanato diphenylmethane (MDI), and which prepolymer comprises less than 1.0% by weight of free MDI monomer, based on the total weight of the prepolymer, exhibits a range of enhanced physical properties compared to those obtained from prepolymers comprising a higher level of free MDI monomer.

A composition having: an amine-functional compound and an alkoxysilane-terminated polyurea made by reacting: an amino-functional alkoxysilane-polyisocyanate adduct with a difunctional amino- or hydroxyl compound. The composition contains no unreacted isocyanate groups. A coating composition having: an amine-functional compound, an alkoxysilane-terminated polyurea, and an epoxy- or acrylate-functional compound. The coating composition is a two-component system.

There is provided a photosensitive resin composition which enables production of a lithographic printing plate precursor having a non-image portion which has good solubility in an alkali aqueous solution and which enables production of a lithographic printing plate having excellent printing durability, excellent chemical resistance, and, in particular, excellent printing durability at the time of using a low quality print material, a lithographic printing plate precursor obtained by using the photosensitive resin composition, and a method for producing a lithographic printing plate.

The photosensitive resin composition contains a polymer compound having a linking group represented by Formula A-1 in the main chain; and an infrared absorbing material. In Formula A-1, R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a monovalent organic group, and X.sup.1 is a specific linking group.

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A chemical mechanical polishing pad comprising a polishing portion, the polishing portion comprising: a polymeric body; a plurality of polymer particles embedded within the body of the polymeric body, wherein at least a portion of the plurality of polymer particles is at least partially exposed at a surface of the polymeric body; and a plurality of pores at the surface of the polymeric body.

A chemical mechanical polishing pad comprising a polishing portion, the polishing portion comprising: a polymeric body; a plurality of polymer particles embedded within the body of the polymeric body, wherein at least a portion of the plurality of polymer particles is at least partially exposed at a surface of the polymeric body; and a plurality of pores at the surface of the polymeric body.