公开(公告)号：US20180355205A1

公开(公告)日：2018-12-13

申请号：US15778407

申请日：2016-11-16

Applicant: Arkema Inc.

Inventor： Roice A. WILLE ,  Kurt A. WOOD

IPC: C09D127/16 ,  C09D5/02

Abstract: The invention relates to an aqueous fluoropolymer hybrid composition having superior weathering resistance while maintaining excellent mechanical properties in coatings, paints, caulks and adhesives. The composition is comprised of: a) a vinylidene fluoride polymer, such as KYNAR® polymers from Arkema, b) a first vinyl polymer immiscible with the vinylidene fluoride polymer and having a Tg of less than 0° C., and c) a second vinyl polymer of a different composition, also having a Tg of less than 0° C., and containing groups capable of crosslinking. The invention also relates to waterborne coatings or paints containing the aqueous fluoropolymer hybrid composition, and an article, object, or structure coated with the fluoropolymer hybrid composition on at least one surface, either in a factory or in the field, to confer protection and decorative properties. Free films made from the waterborne compositions of the invention have a dynamic mechanical analysis loss tangent, tan (δ), of greater than 0.22 at a temperature of 0° C.

公开(公告)号：US20170216780A1

公开(公告)日：2017-08-03

申请号：US15328115

申请日：2015-07-21

Applicant: Arkema Inc.

Inventor： Walter P. Kosar ,  Roderick Reber ,  Gregory S. O'BRIEN ,  Scott R. GABOURY ,  Roice A. WILLE

IPC: B01D71/38 ,  B01D71/36 ,  D01F6/12 ,  D01D5/247 ,  D01F1/08 ,  B01D71/34 ,  B29C47/00

CPC classification number: B01D71/38 ,  B01D69/02 ,  B01D69/08 ,  B01D71/32 ,  B01D71/34 ,  B01D71/36 ,  B01D71/76 ,  B01D2323/12 ,  B01D2323/18 ,  B01D2325/24 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0026 ,  B29K2027/16 ,  B29L2023/00 ,  B29L2031/755 ,  D01D5/247 ,  D01F1/08 ,  D01F6/12

Abstract: Hollow fiber membranes having improved toughness and durability are prepared using a vinylidene fluoride polymer-containing component, such as Kynaro resins, having relatively low crystallinity. One aspect of the invention provides a membrane in the form of a fiber, wherein i) the fiber has a porous wall of a polymeric component enclosing a central hollow space extending the length of the fiber, ii) the polymeric component has a crystallinity as determined by wide angle x-ray diffraction of less than about 35%, iii) the polymeric component is comprised of at least one homopolymer or copolymer of vinylidene fluoride and iv) the membrane has an energy to break of at least about 0.5 J per square mm of membrane cross section.