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专利名称：Novel semi-crystalline polyesters, blends
thereof with amorphous polyesters andpowder coating compositions based on suchblends
发明人：Chang, Yeong-Ho, c/o Eastman Kodak
Company,Jones, Glenn Clark, c/o EastmanKodak Company
申请号：EP90420283.5申请日：19900614公开号：EP0408465A1公开日：19910116
摘要：Disclosed are thermosetting, powder coating compositions comprised ofblends of certain amorphous polyesters and semi-crystalline polyesters in combinationwith a blocked polyisocyanate which, when applied to a substrate and heated, providecross-linked coatings having a combination of desirable properties including good gloss,impact strength and flexibility. The semi-crystalline polyesters have a Tg of less than50°C, a hydroxyl number of 20 to 100, an inherent viscosity of 0.1 to 0.5, a melting rangeof 70 to 150°C, a number average molecular weight of 1500 to 10,000 and a heat offusion (second heating cycle of differential scanning calorimetry) of greater than 5cal/g-°C and are comprised of:
申请人：EASTMAN CHEMICAL COMPANY
地址：100 North Eastman Road Kingsport, TN 37660 US
国籍：US
代理机构：Behrens, Dieter, Dr.-Ing.
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