A method for manufacturing a blade for electrophotographic devices and a blade for electrophotographic devices are provided. The method includes: an impregnation step of impregnating, from the surface of at least a part of a blade-shaped substrate containing urethane rubber, with a blocked isocyanate in which an isocyanate group is blocked with a blocking agent, wherein the part includes a portion that comes into contact with a mating member; and a curing step of dissociating the blocking agent from the blocked isocyanate impregnated into the substrate in the impregnation step, and then curing the released isocyanate in the substrate to form a cured portion in at least the part of the substrate including the portion that comes into contact with the mating member. In the method, the isocyanate released from the blocked isocyanate includes an aromatic isocyanate.

The present disclosure relates to a novel cellulose nanomaterial (CN) based waterborne polyurethane coating, and to methods of making and using the novel cellulose nanomaterial (CN) based waterborne polyurethane coating.

Disclosed herein are processes for producing polyurethanes including mixing (a) polyisocyanate, (b) polymeric compounds having isocyanate-reactive groups, (c) optionally catalysts, (d) compounds of general formula W-Kw-NHC(O)CH2-Q and optionally (e) blowing agents, (f) chain extenders and/or crosslinking agents and (g) auxiliaries and/or additives to afford a reaction mixture and reacting the reaction mixture to afford the polyurethane. Further disclosed herein are a polyurethane producible by such a process and a method of using such a polyurethane in enclosed spaces.

A method for manufacturing a blade for electrophotographic devices and a blade for electrophotographic devices are provided. The method includes: an impregnation step of impregnating, from the surface of at least a part of a blade-shaped substrate containing urethane rubber, with a blocked isocyanate in which an isocyanate group is blocked with a blocking agent, wherein the part includes a portion that comes into contact with a mating member; and a curing step of dissociating the blocking agent from the blocked isocyanate impregnated into the substrate in the impregnation step, and then curing the released isocyanate in the substrate to form a cured portion in at least the part of the substrate including the portion that comes into contact with the mating member. In the method, the isocyanate released from the blocked isocyanate includes an aromatic isocyanate.

A reactive UV absorber suitable for polyurethane is provided. The reactive UV absorber is a compound of formula 1: ##STR00001## wherein R1 is H or Cl.

A reactive UV absorber suitable for polyurethane is provided. The reactive UV absorber is a compound of formula 1:

##STR00001##

wherein R1 is H or Cl.

Provided is a laminate containing a first resin composition layer, a heat-resistant film layer, and a second resin composition layer laminated in the presented order, wherein the first resin composition layer is in a semi-cured state (B stage), and a difference between a maximum thickness and a minimum thickness of the first resin composition layer is 0.5 to 5 m; and the second resin composition layer is in a semi-cured state (B stage), and a difference between a maximum thickness and a minimum thickness of the second resin composition layer is 0.5 to 5 m.

The present invention relates to a hybrid material comprising a matrix of polyurethane and foamed particles of thermoplastic polyurethane comprised therein and also a process for producing such hybrid materials and the use of these hybrid materials as bicycle saddles, upholstery and shoe soles.

A two-liquid type urethane adhesive composition includes a main agent and a curing agent. The main agent includes a poly isocyanate component, and the isocyanate group content in the main agent is 5 mass % or more of the total amount. The curing agent contains a compound having a plurality of active hydrogen-containing groups per molecule, and the compound having a plurality of active hydrogen-containing groups per molecule includes a high molecular weight polyol having two or three hydroxyl groups per molecule and a number average molecular weight of 1800 or greater, a low molecular weight polyol A having two hydroxyl groups per molecule and a number average molecular weight of 200 or less, and a low molecular weight polyol B having three hydroxyl groups per molecule, with at least one of the three hydroxyl groups being secondary hydroxyl groups, and a number average molecular weight of 1200 or less.

Isocyanate-reactive compositions, rigid polyurethane foam-forming compositions, rigid polyurethane foams, and methods for their production, and composite articles having a rigid polyurethane foam sandwiched between metal facer substrates. The rigid polyurethane foams are produced from an isocyanate-reactive composition comprising: (1) a polyol blend that includes an amine-initiated polyether polyol; (2) a hydrochlorofluoroolefin (HCFO); and (3) a catalyst that includes an arylalkyl tertiary amine, an aryl tertiary amine, or a mixture thereof. The foam can have excellent adhesion to metal substrates.