In one aspect, the disclosure relates pertains to a vitreous substitute comprising a gel and an antioxidant, wherein the vitreous substitute mimics the physical properties of natural vitreous humor, as well as its methods of use in the treatment of ophthalmological disorders.

A composition serving as a binder with well-balanced peel strength, high-rate discharge capacity retention ratio, and penetration resistance, a slurry for positive electrode, and a secondary battery using the composition is provided.

According to the present invention, a composition containing a graft copolymer is provided. The graft copolymer has a stem polymer and a plurality of branch polymers, the stem polymer has a polyvinyl alcohol structure, each of a first monomer unit and a second monomer unit is included in at least one of the plurality of branch polymers, the second monomer unit is different from the first monomer unit, when a content of the polyvinyl alcohol structure in the composition is C.sub.PVA % by mass and a total content of the first monomer unit and the second monomer unit in the composition is C.sub.M % by mass, the ratio of the content of the polyvinyl alcohol structure to the total content of the first monomer unit and the second monomer unit (C.sub.PVA/(C.sub.M+C.sub.PVA)) is 0.05 to 0.7, and the composition has a swelling degree of 200 to 900% with respect to propylene carbonate.

A composition serving as a binder with well-balanced peel strength, high-rate discharge capacity retention ratio, and penetration resistance, a slurry for positive electrode, and a secondary battery using the composition is provided.

According to the present invention, a composition containing a graft copolymer is provided. The graft copolymer has a stem polymer and a plurality of branch polymers, the stem polymer has a polyvinyl alcohol structure, each of a first monomer unit and a second monomer unit is included in at least one of the plurality of branch polymers, the second monomer unit is different from the first monomer unit, when a content of the polyvinyl alcohol structure in the composition is C.sub.PVA % by mass and a total content of the first monomer unit and the second monomer unit in the composition is C.sub.M % by mass, the ratio of the content of the polyvinyl alcohol structure to the total content of the first monomer unit and the second monomer unit (C.sub.PVA/(C.sub.M+C.sub.PVA)) is 0.05 to 0.7, and the composition has a swelling degree of 200 to 900% with respect to propylene carbonate.

A composition serving as a binder with well-balanced peel strength, high-rate discharge capacity retention ratio, and penetration resistance, a slurry for positive electrode, and a secondary battery using the composition is provided.

According to the present invention, a composition containing a graft copolymer is provided. The graft copolymer has a stem polymer and a plurality of branch polymers, the stem polymer has a polyvinyl alcohol structure, each of a first monomer unit and a second monomer unit is included in at least one of the plurality of branch polymers, the second monomer unit is different from the first monomer unit, when a content of the polyvinyl alcohol structure in the composition is C.sub.PVA % by mass and a total content of the first monomer unit and the second monomer unit in the composition is C.sub.M % by mass, the ratio of the content of the polyvinyl alcohol structure to the total content of the first monomer unit and the second monomer unit (C.sub.PVA/(C.sub.M+C.sub.PVA)) is 0.05 to 0.7, and the composition has a swelling degree of 200 to 900% with respect to propylene carbonate.

A composition, serving as a binder with a good balance between suppression of battery performance degradation at a high-capacity electrode, high-temperature storage property, and DC resistance, a slurry for a positive electrode using the composition, a positive electrode, and a secondary battery. The composition includes a graft copolymer, wherein: the graft copolymer has a stem polymer and a branch polymer; the stem polymer contains a polyvinyl alcohol structure, the branch polymer contains a first monomer unit containing a (meth)acrylonitrile monomer unit and/or a (meth)acrylic acid monomer; the composition has a swelling rate to an electrolytic solution of 105 to 200% at 25° C. for 15 days; the swelling rate is a swelling rate after immersing the composition in the electrolytic solution at 25° C. for 15 days; and the electrolytic solution is obtained by mixing ethylene carbonate and diethyl carbonate at a volume ratio of 1:2.

A composition, serving as a binder with a good balance between suppression of battery performance degradation at a high-capacity electrode, high-temperature storage property, and DC resistance, a slurry for a positive electrode using the composition, a positive electrode, and a secondary battery. The composition includes a graft copolymer, wherein: the graft copolymer has a stem polymer and a branch polymer; the stem polymer contains a polyvinyl alcohol structure, the branch polymer contains a first monomer unit containing a (meth)acrylonitrile monomer unit and/or a (meth)acrylic acid monomer; the composition has a swelling rate to an electrolytic solution of 105 to 200% at 25° C. for 15 days; the swelling rate is a swelling rate after immersing the composition in the electrolytic solution at 25° C. for 15 days; and the electrolytic solution is obtained by mixing ethylene carbonate and diethyl carbonate at a volume ratio of 1:2.

This invention relates to radiopaque polymers and to their use, particularly in the manufacture of medical devices and in methods of medical treatment, including therapeutic embolization. In particular embodiments the present disclosure relates to a hydrophilic polymer comprising pendent groups which a phenyl ring is substituted with one or more iodine groups and one or more non-iodine groups as described in more detail herein.

This invention relates to radiopaque polymers and to their use, particularly in the manufacture of medical devices and in methods of medical treatment, including therapeutic embolization. In particular embodiments the present disclosure relates to a hydrophilic polymer comprising pendent groups which a phenyl ring is substituted with one or more iodine groups and one or more non-iodine groups as described in more detail herein.

A composition that serves as a binder for a positive electrode with a good balance between suppression of battery performance degradation at a high-capacity electrode, high-temperature storage property, and DC resistance, a slurry for a positive electrode using the composition, a positive electrode, and a secondary battery. A free induction decay curve of the composition obtained by measuring at 180° C. by Solid Echo method using pulse NMR is separated into three components, component S.sub.180, component M.sub.180, and component H.sub.180, a component ratio of the component S.sub.180 is 10% or more and 80% or less, and a relaxation time of the component S.sub.180 is 500 μs or more.

A composition that serves as a binder for a positive electrode with a good balance between suppression of battery performance degradation at a high-capacity electrode, high-temperature storage property, and DC resistance, a slurry for a positive electrode using the composition, a positive electrode, and a secondary battery. A free induction decay curve of the composition obtained by measuring at 180° C. by Solid Echo method using pulse NMR is separated into three components, component S.sub.180, component M.sub.180, and component H.sub.180, a component ratio of the component S.sub.180 is 10% or more and 80% or less, and a relaxation time of the component S.sub.180 is 500 μs or more.