申请人:E.I. du Pont de Nemours and Company
公开号:US08324314B2
公开(公告)日:2012-12-04
A composition for imparting surface properties to substrates comprising a polymer of at least one polyurethane having at least one urea linkage prepared by:
(i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I):
Rf1-L-X (I)
wherein
Rf1 is a monovalent, partially or fully fluorinated, linear or branched, alkyl radical having 2 to 100 carbon atoms; optionally interrupted by 1 to 50 oxygen atoms; wherein the ratio of carbon atoms to oxygen atoms is at least 2:1 and no oxygen atoms are bonded to each other;
L is a bond or a linear or branched divalent linking group having 1 to about 20 carbon atoms, said linking group optionally interrupted by 1 to about 4 hetero-radicals selected from the group consisting of —O—, —NR1—, —S—, —SO—, —SO2—, and —N(R1)C(O)— wherein R1 is H or C1 to C6 alkyl, and said linking group optionally substituted with CH2Cl;
X is an isocyanate-reactive group selected from the group consisting of —OH, —N(R)H, and —SH; and thereafter
(ii) reacting with (c) water and (d) 0.05 to about 2.0% by weight of an isocyanate-reactive fluorinated particulate component, based on a total dry weight of the composition.
一种用于赋予基材表面性能的组合物,包括至少一种聚氨酯聚合物,其具有至少一个脲键,制备方法如下:(i)反应(a)至少一种具有异氰酸基团的二异氰酸酯、多异氰酸酯或其混合物,以及(b)至少一种从式(I)中选择的氟化合物:Rf1-L-X (I)其中,Rf1是一种单价、部分或完全氟化的线性或支链烷基,具有2至100个碳原子;可选地被1至50个氧原子中断;其中碳原子与氧原子的比例至少为2:1,且没有氧原子相互连接;L是一种键或线性或支链二价连接基,具有1至约20个碳原子,该连接基可选地被1至约4个异原子所替代,所述异原子被选择自羟基、—NR1—、—S—、—SO—、—SO2—和—N(R1)C(O)—的群体,其中R1是氢或C1至C6烷基,并且该连接基可选地被CH2Cl取代;X是一种异氰酸酯反应性基团,被选择自—OH、—N(R)H和—SH的群体;然后(ii)与(c)水和(d)0.05至约2.0重量%的异氰酸酯反应性氟化颗粒组分反应,基于组合物的总干重。