Adhesive composition and use thereof for providing a self-healing adhered roofing systems

A self-healing membrane composite comprising:

• a) a waterproofing membrane having first and second major surfaces and
• b) a layer of anhydrous adhesive composition coated on and covering at least portion of the second major surface of the waterproofing membrane,
• wherein the anhydrous adhesive composition comprises at least 35 wt.-%, of at least one powdered superabsorber polymer, the proportions being based the total weight of the adhesive composition excluding the weight of organic solvent(s) that may be present.

A self-healing adhered roofing system comprising:

• a) a substrate,
• b) a roofing membrane directly adhered over at least part of one of its major surfaces to a surface of the substrate with a layer of an anhydrous adhesive composition,
• wherein the anhydrous adhesive composition comprises at least 35 wt.-% of at least one powdered superabsorber polymer, the proportion being based the total weight of the anhydrous adhesive composition excluding the weight of organic solvent(s) that may be present.

A method using at least one powdered superabsorber polymer in an adhesive to provide a self-healing adhered roofing system, the method comprising ensuring the at least one superabsorber polymer is present the adhesive in an amount of 12.5-40 wt.-%, based on the total weight of the adhesive and wherein the self-healing adhered roofing system comprises a roof substrate and a roofing membrane having first and second major surfaces, wherein at least portion of the second major surface of the roofing membrane is adhesively adhered to a surface of the roof substrate using the adhesive.