公开(公告)号：US09790358B2

公开(公告)日：2017-10-17

申请号：US14691023

申请日：2015-04-20

Applicant: WHITFORD CORPORATION

Inventor： Leonard W. Harvey ,  Michael Coates ,  Julie K. Wright

IPC: C08L27/18 ,  C08L29/10 ,  C08L27/12 ,  C08L27/24 ,  C08J3/00 ,  C08J3/12 ,  C09D5/03 ,  C09D127/18 ,  C09D127/12 ,  C09D129/10

CPC classification number: C08L27/18 ,  C08J3/005 ,  C08J3/12 ,  C08J2327/18 ,  C08L27/12 ,  C08L27/24 ,  C08L29/10 ,  C08L2201/50 ,  C08L2205/02 ,  C08L2205/025 ,  C09D5/03 ,  C09D127/12 ,  C09D127/18 ,  C09D129/10 ,  Y10T428/2982 ,  C08L2666/04

Abstract: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (μm), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processable fluoropolymer (MPF), such as fluorinated ethylene propylene (FEP), in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (μm). Blending of the dispersions facilitates interaction of the LPTFE and MPF on a submicron level to facilitate intimate blending such that, when the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers. The blended fluoropolymer composition may be used to provide a coating having improved impermeability, stain resistance, abrasion resistance, smoothness, and higher contact angles.

公开(公告)号：US20140205757A1

公开(公告)日：2014-07-24

申请号：US14222991

申请日：2014-03-24

Applicant: WHITFORD CORPORATION

Inventor： Leonard W. Harvey ,  Michael Coates ,  Julie K. Wright

IPC: C08L27/18 ,  C08L27/12 ,  C09D129/10 ,  C09D127/12 ,  C08L29/10 ,  C09D127/18

CPC classification number: C08L27/18 ,  C08J3/005 ,  C08J3/12 ,  C08J2327/18 ,  C08L27/12 ,  C08L27/24 ,  C08L29/10 ,  C08L2201/50 ,  C08L2205/02 ,  C08L2205/025 ,  C09D5/03 ,  C09D127/12 ,  C09D127/18 ,  C09D129/10 ,  Y10T428/2982 ,  C08L2666/04

Abstract: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (μm), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as perfluoromethylvinvyl ether (MFA), fluorinated ethylene propylene (FEP), or perfluoropropylvinvyl ether (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (μm). Blending of the dispersions facilitates interaction of the LPTFE and MPF on a submicron level to facilitate intimate blending such that, when the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers. The blended fluoropolymer composition may be used to provide a coating having improved impermeability, stain resistance, abrasion resistance, smoothness, and higher contact angles.

Abstract translation: 提供混合的含氟聚合物组合物。 在一个实施方案中，将第一含氟聚合物的液体分散体与第二含氟聚合物的液体分散体共混。 第一含氟聚合物可以是聚四氟乙烯（PTFE），例如已经通过分散体或乳液聚合方法聚合并且未被聚集，照射或热降解的低分子量PTFE（LPTFE）。 LPTFE可以是水分散体的形式，其平均粒度小于1.0微米（μm），LPTFE的第一熔融温度（Tm）为332℃或更低。 第二含氟聚合物可以是可熔融加工的含氟聚合物（MPF），例如全氟甲基维子醚（MFA），氟化乙烯丙烯（FEP）或全氟丙基乙酰基醚（PFA），例如以水分散体的形式，并且具有平均值 粒度小于1.0微米（μm）。 分散体的混合促进了LPTFE和MPF在亚微米级的相互作用，以促进紧密共混，使得当混合的含氟聚合物组合物被干燥时，形成表示含氟聚合物的真正合金的晶体结构，其熔体特性与那些 的各种含氟聚合物。 混合的含氟聚合物组合物可用于提供具有改进的不渗透性，耐污性，耐磨性，光滑度和更高接触角的涂层。

公开(公告)号：US20170066914A1

公开(公告)日：2017-03-09

申请号：US15211453

申请日：2016-07-15

Applicant: WHITFORD CORPORATION

Inventor： Leonard W. Harvey ,  Michael Coates ,  Julie K. Wright

IPC: C08L27/18 ,  C09D127/18 ,  C08J3/00 ,  C09D5/03

CPC classification number: C08L27/18 ,  C08J3/005 ,  C08J3/12 ,  C08J2327/18 ,  C08L27/12 ,  C08L27/24 ,  C08L29/10 ,  C08L2201/50 ,  C08L2205/02 ,  C08L2205/025 ,  C09D5/03 ,  C09D127/12 ,  C09D127/18 ,  C09D129/10 ,  Y10T428/2982 ,  C08L2666/04

Abstract: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (□m), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processable fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (□m). Blending of the dispersions facilitates interaction of the LPTFE and MPF on a submicron level to facilitate intimate blending such that, when the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers. The blended fluoropolymer composition may be used to provide a coating having improved impermeability, stain resistance, abrasion resistance, smoothness, and higher contact angles.

Abstract translation: 提供混合的含氟聚合物组合物。 在一个实施方案中，将第一含氟聚合物的液体分散体与第二含氟聚合物的液体分散体共混。 第一含氟聚合物可以是聚四氟乙烯（PTFE），例如已经通过分散体或乳液聚合方法聚合并且未被聚集，照射或热降解的低分子量PTFE（LPTFE）。 LPTFE可以是水分散体的形式，其平均粒度小于1.0微米（□m），LPTFE的第一熔融温度（Tm）为332℃或更低。 第二含氟聚合物可以是可熔融加工的含氟聚合物（MPF），例如甲基氟代烷氧基（MFA），氟化乙烯丙烯（FEP）或全氟烷氧基（PFA），例如以水分散体的形式，并且具有平均粒径 小于1.0微米（□m）。 分散体的混合促进了LPTFE和MPF在亚微米级的相互作用，以促进紧密共混，使得当混合的含氟聚合物组合物被干燥时，形成表示含氟聚合物的真正合金的晶体结构，其熔体特性与那些 的各种含氟聚合物。 混合的含氟聚合物组合物可用于提供具有改进的不渗透性，耐污性，耐磨性，光滑度和更高接触角的涂层。

公开(公告)号：US20150240065A1

公开(公告)日：2015-08-27

申请号：US14691023

申请日：2015-04-20

Applicant: WHITFORD CORPORATION

Inventor： Leonard W. Harvey ,  Michael Coates ,  Julie K. Wright

IPC: C08L27/24 ,  C08L27/18

CPC classification number: C08L27/18 ,  C08J3/005 ,  C08J3/12 ,  C08J2327/18 ,  C08L27/12 ,  C08L27/24 ,  C08L29/10 ,  C08L2201/50 ,  C08L2205/02 ,  C08L2205/025 ,  C09D5/03 ,  C09D127/12 ,  C09D127/18 ,  C09D129/10 ,  Y10T428/2982 ,  C08L2666/04

Abstract: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (m), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (m). Blending of the dispersions facilitates interaction of the LPTFE and MPF on a submicron level to facilitate intimate blending such that, when the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers. The blended fluoropolymer composition may be used to provide a coating having improved impermeability, stain resistance, abrasion resistance, smoothness, and higher contact angles.

Abstract translation: 提供混合的含氟聚合物组合物。 在一个实施方案中，将第一含氟聚合物的液体分散体与第二含氟聚合物的液体分散体共混。 第一含氟聚合物可以是聚四氟乙烯（PTFE），例如已经通过分散体或乳液聚合方法聚合并且未被聚集，照射或热降解的低分子量PTFE（LPTFE）。 LPTFE可以是水分散体的形式，其平均粒度小于1.0微米（μm），LPTFE的第一熔融温度（Tm）为332℃或更低。 第二含氟聚合物可以是可熔融加工的含氟聚合物（MPF），例如甲基氟代烷氧基（MFA），氟化乙烯丙烯（FEP）或全氟烷氧基（PFA），例如以水分散体的形式，并且具有平均粒径 小于1.0微米（μm）。 分散体的混合促进了LPTFE和MPF在亚微米级的相互作用，以促进紧密共混，使得当混合的含氟聚合物组合物被干燥时，形成表示含氟聚合物的真正合金的晶体结构，其熔体特性与那些 的各种含氟聚合物。 混合的含氟聚合物组合物可用于提供具有改进的不渗透性，耐污性，耐磨性，光滑度和更高接触角的涂层。