公开(公告)号：US09029471B2

公开(公告)日：2015-05-12

申请号：US12679039

申请日：2008-09-30

申请人： Romain Severac ,  Agnes Ibos ,  Lamia Heuze ,  Renaud Laloux-Walther

发明人： Romain Severac ,  Agnes Ibos ,  Lamia Heuze ,  Renaud Laloux-Walther

IPC分类号： C14C9/00 ,  C08F220/36 ,  C08F220/24 ,  C08F220/68

CPC分类号： C14C9/00 ,  C08F220/24 ,  C08F220/36 ,  C08F220/68

摘要： Various fluoropolymers have been proposed for imparting oil and water repellency to leather. Commonly, these fluoropolymers are amphiphilic; i.e., they are made from at least one monomer which is hydrophobic and at least one monomer which is hydrophilic. The present invention identifies and remedies disadvantages associated with the ability of amphiphilic fluoropolymers to impart oil and water repellency to leather. Contrary to conventional thinking, it has now been discovered that the incorporation of hydrophilic groups in a fluoropolymer undesirably reduces its ability to impart water resistance to leather. Correspondingly, it has also been discovered that a fluoropolymer incorporating fewer or no hydrophilic groups imparts superior oil and water repellency to leather when compared to fluoropolymers incorporating more hydrophilic groups. Therefore, this invention provides fluoropolymers which incorporate reduced levels of hydrophilic groups.

摘要翻译： 已经提出了各种含氟聚合物用于赋予皮革防油和防水性。 通常，这些含氟聚合物是两亲性的; 即它们由至少一种疏水性单体和至少一种亲水的单体制成。 本发明鉴定和补救与两亲性含氟聚合物赋予皮革防油和防水性能相关的缺点。 与传统思想相反，现在已经发现，在氟聚合物中引入亲水基团不利地降低了赋予皮革防水性的能力。 相应地，也已经发现，与掺入更多亲水基团的含氟聚合物相比，掺入较少或不具有亲水基团的含氟聚合物赋予皮革优异的防油和防水性。 因此，本发明提供含有降低水平的亲水基团的含氟聚合物。