| 摘要 |
PURPOSE:To provide a corrosion resistant compsn. which is free from defects such as outflow, deformation and curing even if it is exposed continuously at 100-150 deg.C by limiting the compsn. and consistency of refined petrolatum having a specific dropping point, curable grease and a low mol.wt. polymer having specific mol.wts. CONSTITUTION:A compsn. contg. A) 5-90wt% refined petrolatum having >=50 deg.C dropping point, B) 5-90wt% curable grease having >=150 deg.C dropping point, and C) 5-70wt% low mol.wt. polymer of 100-10,000 average mol.wt. as essential component and having 30-500 (1/10mm.) consistency at 25 deg.C. This compsn. is blended with the component A which retains viscosity at a high temp. of 100- 150 deg.C, the component B which exhibits a thickening effect at high temp., and the component C which provides the viscosity and physical strength of films, in specific ratios. Therefore, the compsn. withstands impact from the outside even after the formation of coating films, shuts off water, etc. thoroughly over a long period of time, and provides a good corrosion preventive effect. This compsn. may be used by impregnating in or coating the same on a porous tape base. |
