发明授权
- 专利标题: Curable film-forming compositions demonstrating self-healing properties
- 专利标题(中): 证明自愈性的可固化成膜组合物
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申请号: US11846070申请日: 2007-08-28
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公开(公告)号: US07872078B2公开(公告)日: 2011-01-18
- 发明人: Lyle L. Foringer , Constantine A. Kondos , Richard J. Sadvary , Kurt G. Olson , Dennis A. Simpson
- 申请人: Lyle L. Foringer , Constantine A. Kondos , Richard J. Sadvary , Kurt G. Olson , Dennis A. Simpson
- 申请人地址: US OH Cleveland
- 专利权人: PPG Industries Ohio, Inc.
- 当前专利权人: PPG Industries Ohio, Inc.
- 当前专利权人地址: US OH Cleveland
- 代理商 Robert A. Diaz; Steven W. Hays; Diane R. Meyers
- 主分类号: C08G18/00
- IPC分类号: C08G18/00
摘要:
The present invention is directed to curable film-forming compositions comprising: (a) a polymeric binder comprising a polyester having hydroxyl functional groups; and (b) a curing agent comprising a polyisocyanate having at least three isocyanate functional groups. In certain embodiments, after application to a substrate as a coating and after curing, the compositions demonstrate a Fisher microhardness of at least 120 at ambient temperatures of 15 to 25° C. and a softening point greater than or equal to 35° C. Additionally, in certain embodiments, after application to a substrate as a coating and after curing, the compositions demonstrate a 20° gloss recovery of at least 75% when subjected to the DRY ABRASION TEST METHOD.
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