Shoe press belt and method for producing a shoe press belt
AssigneeIchikawa Co., Ltd.
InventorsYuya Takamori, Manami Morinaga
Life of this patent
Estimating the term…
Abstract
A shoe press belt for use in a papermaking machine including at least one resin layer, where the resin layer contains a polyurethane resin formed by curing an urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group, where the urethane prepolymer is obtained by reacting a polyisocyanate compound containing 4,4′-methylene bis(phenylisocyanate) with a polyol compound containing polytetramethylene ether glycol, and the curing agent contains polycarbonate diol(s).
Claims9
A shoe press belt for use in a papermaking machine, comprising at least one resin layer, wherein:
- the resin layer comprises a polyurethane resin formed by curing an urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group,
- the urethane prepolymer is obtained by reacting a polyisocyanate compound comprising 4,4′-methylene bis(phenylisocyanate) with a polyol compound consisting of polytetramethylene ether glycol, and
- the curing agent comprises (a) polycarbonate diol(s).
A method for producing a shoe press belt for use in a papermaking machine,
- the method comprising a step of forming a resin layer by curing an urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group, wherein:
- the urethane prepolymer is obtained by reacting a polyisocyanate compound comprising 4,4′-methylene bis(phenylisocyanate) with a polyol compound consisting of polytetramethylene ether glycol, and
- the curing agent comprises (a) polycarbonate diol(s).
Dependencies are inferred from the claim text.