发明申请
US20070032624A1 Low surface energy polyisocyanates and their use in one- or two-component coating compositions
审中-公开
低表面能多异氰酸酯及其在单组分或双组分涂料组合物中的用途
- 专利标题: Low surface energy polyisocyanates and their use in one- or two-component coating compositions
- 专利标题(中): 低表面能多异氰酸酯及其在单组分或双组分涂料组合物中的用途
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申请号: US11198722申请日: 2005-08-05
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公开(公告)号: US20070032624A1公开(公告)日: 2007-02-08
- 发明人: Richard Roesler , James Garrett , Aaron Lockhart , Carol Kinney
- 申请人: Richard Roesler , James Garrett , Aaron Lockhart , Carol Kinney
- 专利权人: Bayer MaterialScience LLC
- 当前专利权人: Bayer MaterialScience LLC
- 主分类号: C08G18/00
- IPC分类号: C08G18/00
摘要:
The present invention is directed to a polyisocyanate mixture i) having a monomeric diisocyanate content of less than 3% by weight, ii) having a urethane group content of more than 50 equivalent %, based on the total equivalents of urethane and allophanate groups, and iii) containing fluorine (calculated as F, AW 19) in an amount of 0.001 to 50% by weight, wherein the preceding percentages are based on the solids content of the polyisocyanate mixture and wherein fluorine is incorporated by reacting a) an isocyanate group from a polyisocyanate adduct containing isocyanurate groups and prepared from a monomeric diisocyanate having at least one cycloaliphatic group with b) a compound containing two or more carbon atoms, one or more hydroxyl groups and one or more fluorine atoms to form urethane groups. The present invention is also directed to the use of this polyisocyanate mixture, optionally in blocked form, as an isocyanate component in one- or two-component coating compositions.