Fusion adhesive

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 175/06 (2006.01) A41D 31/02 (2006.01) B32B 7/12 (2006.01) B32B 27/12 (2006.01) B32B 27/40 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 18/64 (2006.01) D06B 1/00 (2006.01) D06M 15/568 (2006.01) D06M 15/572 (2006.01) D06M 17/10 (2006.01) D06M 23/00 (2006.01) D06N 3/14 (2006.01)

Patent

CA 2072839

ABSTRACT The present invention relates to polyurethane fusion adhesives that are hardened by the action of moisture and which contain at least one reaction product from a component that contains NCO groups and an essentially linear hydroxypolyester, hydroxypolyether, and/or hydroxypolyetherester component. In addition, the present invention relates to a procedure for manufacturing a material that is permeable to water only in vapour form, this being in the form of a fibre material, in particular in the form of a web, which is joined to a polyurethane film, in which the fibre material is coated with a polyurethane material and subsequently the polyurethane material is hardened to form a water-vapour permeable film. The present invention also relates to a material that is permeable to water only in vapour form and which is in the form of a fibre material, in particular in the form of a web, that is bonded to a polyurethane film. According to the present invention, a fusion adhesive with a segmented hydroxypolyester or an hydroxypolyether or an hydroxypolyetherester component is used for this purpose as polyurethane material. The fusion adhesive according to the present invention can be applied directly or by a transfer technique to the fibre material and is hardened in only one step, by the action of moisture, to form a water vapour permeable, but otherwise high quality water-proof membrane film.

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