HARDLY STAINING URETHANE SEALING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a hardly staining urethane sealing material the raw material mixture of which hardly allows a plasticizer to be eluted and which does not influence a coating film and hardly stains a joint part or a coating. SOLUTION: This urethane sealing material is prepared by compounding 20-50 wt.% urethane prepolymer, 2-30 wt.% liquid hydrocarbon having a boiling point of 150 deg.C or higher as a plasticizer, and 25-60 wt.% calcium carbonate as a filler.