| 摘要 |
<p>1498569 Powder coating compositions W R GRACE & CO 24 Aug 1976 [8 Sept 1975] 35232/76 Headings C3B and C3P A particulate composition, having average particle diameter of 2-20 Á, comprises: (I) a solid epoxy resin having M.W. 500-12,000; (II) 1-15% by wt. of I of a curing agent; and (III) 0À5-3% by wt. of I of a liquid poly(ethyl acrylate) having a viscosity of 20,000-100,000 cp. at 50‹ C. I may be a diglycidyl ether of bisphenol A. II may be trimellitic anhydride. The composition may additionally contain 1-3% by wt. (based on the total composition) of silica.</p> |
