| abstract |
The invention discloses a modified polyurethane adhesive for a dry-cleaning resistant reflective material, which is prepared from the following components in percentage by weight: 10-20% of polyester polyol, 5-10% of hydroxyl organosilicon, 5-20% of epoxy resin, 5-8.2% of isocyanate, 1-2% of micromolecule dihydric alcohol, 3-5% of chain extender, 50-59% of solvent and auxiliary agent, wherein the auxiliary agent comprises 0.1-1% of antioxidant, 0.5-1% of catalyst and 0.1-1% of silane coupling agent, and the sum of the antioxidant, the catalyst and the silane coupling agent is 1-2%. The invention has excellent adhesiveness, temperature resistance, acid resistance, alkali resistance and tetrachloroethylene washing resistance. |