A separator for a rechargeable battery includes a porous substrate and an adhesive layer on at least one surface thereof. The adhesive layer includes a first binder, a second binder, and a filler. The first binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of about 10 wt % or less based on a total weight of the first binder. A weight average molecular weight of the first binder ranges from about 800,000 to about 1,500,000. The second binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of 10 wt % or less based on a total weight of the second binder. A weight average molecular weight of the second binder is 600,000 or less.

A separator for a rechargeable battery includes a porous substrate and an adhesive layer on at least one surface thereof. The adhesive layer includes a first binder, a second binder, and a filler. The first binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of about 10 wt % or less based on a total weight of the first binder. A weight average molecular weight of the first binder ranges from about 800,000 to about 1,500,000. The second binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of 10 wt % or less based on a total weight of the second binder. A weight average molecular weight of the second binder is 600,000 or less.

Described herein is a low molecular weight fluorinated (meth)acrylate polymer comprising a plurality of pendent sulfonylamide groups, which is used as a tackifier in a pressure sensitive adhesive composition. Also described herein is a pressure sensitive adhesive composition comprising the low molecular weight fluorinated (meth)acrylate polymer, and articles comprising the pressure sensitive adhesive composition. The pressure sensitive adhesive preferably also comprises a high molecular weight polymer, which is derived from a (meth)acrylate monomer or is a fluoropolymer.

Described herein is a low molecular weight fluorinated (meth)acrylate polymer comprising a plurality of pendent sulfonylamide groups, which is used as a tackifier in a pressure sensitive adhesive composition. Also described herein is a pressure sensitive adhesive composition comprising the low molecular weight fluorinated (meth)acrylate polymer, and articles comprising the pressure sensitive adhesive composition. The pressure sensitive adhesive preferably also comprises a high molecular weight polymer, which is derived from a (meth)acrylate monomer or is a fluoropolymer.

The invention relates to a polymer thick film (PTF) conductive paste composition comprising a conductive powder, a fluoroelastomer, a silane coupling agent, and one or solvents. The PTF conductive paste composition can be used to form a printed conductor and to form an electrically conductive adhesive on various articles. The PTF conductive paste composition is provides a stretchable electrical conductor for wearables.

The invention relates to a polymer thick film (PTF) conductive paste composition comprising a conductive powder, a fluoroelastomer, a silane coupling agent, and one or solvents. The PTF conductive paste composition can be used to form a printed conductor and to form an electrically conductive adhesive on various articles. The PTF conductive paste composition is provides a stretchable electrical conductor for wearables.

A fluororubber composition containing a ternary fluororubber polymer including vinylidene fluoride, perfluorovinyl ether and tetrafluoroethylene; a reaction product of silica-aluminum silicate with vinyl ethoxysilane; and hydrotalcite. The fluororubber composition does not substantially contain magnesium oxide and calcium hydroxide. The fluororubber composition contains 2 to 55 parts by weight of the reaction product of silica-aluminum silicate with vinyl ethoxysilane and 0.5 to 10 parts by weight of the hydrotalcite relative to 100 parts by weight of the ternary fluororubber polymer.

A fluororubber composition containing a ternary fluororubber polymer including vinylidene fluoride, perfluorovinyl ether and tetrafluoroethylene; a reaction product of silica-aluminum silicate with vinyl ethoxysilane; and hydrotalcite. The fluororubber composition does not substantially contain magnesium oxide and calcium hydroxide. The fluororubber composition contains 2 to 55 parts by weight of the reaction product of silica-aluminum silicate with vinyl ethoxysilane and 0.5 to 10 parts by weight of the hydrotalcite relative to 100 parts by weight of the ternary fluororubber polymer.

The invention relates to a melt-processable fiber-bonding agent made of poly(vinylidene fluoride) (PVDF), such as KYNAR PVDF from Arkema, as well as to fibrous materials bonded with the PVDF fiber-bonding agent. The PVDF fiber-bonding agent is a low-melt temperature, low melt viscosity PVDF polymer or copolymer with excellent chemical and oxidative resistance properties, and is suitable for bonding fibers in non-woven fabrics, especially for use in chemically-aggressive environments. The PVDF fiber-bonding agent composition allows it to be processed into fibers on conventional melt spinning equipment. The PVDF fiber-bonding agent is introduced into non-woven fabric in the form of a continuous fiber web or as a component of a mixed fiber formulation. When heated above its melting point, the lower melting point PVDF fiber-bonding agent of the invention bonds the fibers of the fiber framework at the fiber cross-over points.

A method for bonding two plates together for a fuel cell, wherein the method comprises applying an adhesive to the surface of at least one of the plates and pressing the two plates together with the adhesive in between. The adhesive contains a mixture in the range of 0.01% to 30% PVDF and a solvent, and optionally a surfactant.