POLYSULFIDE SEALING MATERIAL COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a polysulfide sealing material composition which does not use a heavy metal and is excellent in weather resistance of adhesion to glass, elongation, or the like. SOLUTION: This polysulfide sealing material composition contains a polypropylene glycol-modified polysulfide polymer (A) having a terminal alkoxysilyl group and a polyisocyanate compound (B). The modified polysulfide polymer (A) is prepared by reacting a polypropylene glycol-modified polysulfide polymer having a terminal mercapto group with an alkoxysilane compound having an alkoxysilyl group and a group reactive with the mercapto group at a molar ratio of the reactive group to the mercapto group of 3-30 mol%. COPYRIGHT: (C)2004,JPO