Polyurethane dispersions based on 2,2'-MDI

摘要

Dispersions of polyurethane (PUR) containing aqueous mixture A) of two or more polyisocyanates An + 1) as structural components, of which one polyisocyanate A1) is diphenylmethane-2,2'-diisocyanate, with lacondición that in this mixture is present from 25 to 80% by weight of diphenylmethane-2,2'-diisocyanate A1).