| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a moisture-curable resin based on aliphatic isocyanates. The moisture-curable resin contains a material with aliphatic isocyanate functional groups, which contains a reaction product of hexamethylene diisocyanate and a hydroxy-functional ether compound, and a material with cycloaliphatic isocyanate functional groups, which contains a reaction product of isophorone diisocyanate and a monofunctional alcohol, wherein the weight ratio of the material with cycloaliphatic isocyanate functional groups to the material with aliphatic isocyanate functional groups ranges from 95:5 to 50:50. A method of improving cold lap resistance, bubbling resistance and weather resistance of the coating composition which contains said moisture-curable resin includes a step of preparing a composition which does not exhibit significant cold lap when deposited with thickness of the moist film of at least 6 mil, and where the coating composition does not exhibit bubbling during curing to thickness of the dry film of at least 6 mil.EFFECT: invention improves cold lap resistance and bubbling resistance of the coating composition and improves film-forming and coating properties of the resin.19 cl, 7 dwg, 16 tbl, 14 ex |
