It's hard to get a hold of in Aus these days.
Try Bostic Pool repair Adhesive, it does the job.

Better than all of that messy glue is Tear Aid.
www.kitepower.com.au/collections/kitesurfing/SPGeneral

All other types of repair kites and tapes here too.
www.kitepower.com.au/catalog/category_325_Repair_Kits.html

Pattex was really ordinary glue to use on bladders, it was the only thing supplied with a couple of kite brands, like Wipika, and just like the brand is is fast fading from the spotlight.

Gluefix glue sticks better but Tear Aid patches are superior to any glue, and seam seal like Granini said is superior to pattex.

Was it to stick a valve back on?

Cya and

Goodwinds

Steve