Bayer Corporation

Jack W Hausser

Peter H Markusch

Rick V Starcher

The present invention relates to a process for repairing plastic parts with non-sagging, sandable polyurethane compositions. These compositions are prepared by mixing A) a liquid polyisocyanate having an isocyanate content of from about 10 to 50% by weight; B) a liquid isocyanate-reactive mixture comprising: i) one or more high molecular weight, hydroxyl group containing compounds, ii) one or more organic compounds containing amine groups, and iii) of one or more low molecular weight diols or triols; and C) an inorganic filler mixture consisting of: 1) of glass flakes, and 2) of another inorganic filler. Components A) and B) are present in quantities such that the isocyanate index is from 90 to 120. Component C) is dispersed phase-stable in either or both component A) and/or component B) prior to mixing components A) and B).

Growing community of inventors

Bethel Park, PA, United States of America

Jack W Hausser