Shoe press belt and method for producing a shoe press belt
AssigneeIchikawa Co., Ltd.
InventorsYuya Takamori, Manami Morinaga
Life of this patent
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Abstract
The object of the invention is to provide a shoe press belt which has an excellent strength while the variation in strength among its parts being suppressed, and to provide a method for producing such a shoe press belt. Provided is a shoe press belt for use in a papermaking machine comprising at least one resin layer comprising polyurethane resin, wherein the polyurethane resin comprises as a component a polycarbonate diol comprising one or more unit(s) A expressed by the following formula (1) (wherein R1 is a branched alkylene group having 3 or more and 20 or less of carbon atoms):
Claims16
A shoe press belt, comprising at least one resin layer comprising a polyurethane resin, wherein:
- the polyurethane resin comprises as a component (a) at least one polycarbonate diol comprising at least one unit A of the following formula (1):
- wherein R1 is a branched alkylene group having from 3 to 20 carbon atoms, and
- at least one unit B of the following formula (2):
- wherein R2 is a linear alkylene group having from 1 to 20 carbon atoms.
A method for producing a shoe press belt, the method comprising:
- forming a resin layer comprising a polyurethane resin by curing a polyurethane ingredient, wherein
- the polyurethane ingredient comprises as a component (a) at least one polycarbonate diol comprising at least one unit A of the following formula (1):
- wherein R1 is a branched alkylene group having from 3 to 20 carbon atoms, and
- at least one unit B of the following formula (2):
- wherein R2 is a linear alkylene group having from 1 to 20 carbon atoms.
Dependencies are inferred from the claim text.