Adhesive and resulting nonwoven fabric

Details Adhesive and resulting nonwoven fabric Adhesive and resulting nonwoven fabric

D - Textiles, Paper

04

H

117/43

D04H 3/12 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/73 (2006.01) C08G 18/75 (2006.01) D06M 15/564 (2006.01)

Patent

CA 1202531

Abstract of the Disclosure A prepolymer having a molecular weight of at least 3,000 is made from a polyether polyol where all the OH groups are capped with an aliphatic polyisocyanate. When mixed with water the prepolymer reacts to form an elastomeric cross-linked polyurethane gel adhesive which can be used to adhere fibers to form a nonwoven fabric. Examples of the aliphatic diisocyanate are IPDI (isophorone diisocyanate) and hydrogenated MDI. A catalyst can also be applied to the aqueous mixture to accelerate the adhesive binder formation.

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