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The oligomer is obtained by reacting a prepolymer, received from diisocyanate plus a polyether or polyester polyol, having a stoichiometric level of a hydroxyl-made up of acrylate for example hydroxypropyl acrylate. Has to be estimated with the engineer or operator and will depend on width and depth of your cracks https://waterleakagegrouting47913.blogsmine.com/16840118/a-simple-key-for-roof-pu-grouting-unveiled


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