A fluorinated polymer suitable for deposition and capable of favorable metal patterning, is provided. A resin film containing such a fluorinated polymer as a material is provided. Further, a photoelectronic element having such a resin film in its structure is provided.

A fluorinated polymer which satisfies the following requirements (1) to (3): (1) the melting point is less than 200° C., or no melting point is observed, (2) the thermogravimetric loss rate when the temperature is increased at a temperature-increasing rate of 2° C./min under a pressure of 1×10.sup.−3 Pa, substantially reaches 100% at 400° C. or lower, (3) when the temperature is increased at a temperature-increasing rate of 2° C./min under a pressure of 1×10.sup.−3 Pa, the temperature width from a temperature at which the thermogravimetric loss rate is 10% to a temperature at which it is 90%, is within 200° C.

A process includes combining a copolymer and mono- or di-valent metal ions to form a mixture, wherein the copolymer has from about 70 to about 98 wt % of an alpha-olefin moiety and about 2 to about 30 wt % of a (meth)acrylate moiety; reactively extruding the mixture to form a neutralized copolymer having a melt flow index of from about 5 to about 1500 g/10 min, wherein about 2 to about 50 wt % of the (meth)acrylate moiety is neutralized to form a mono- or di-valent metal salt present in an amount of from about 0.2 to about 20% based on the total (meth)acrylic acid content of the copolymer; and grinding the neutralized copolymer to form the powder having a Dv50 particle size of from about 10 to about 600 μm as determined using ASTM D5861, wherein the process is free of utilizing a liquid and/or a slurry.

[Problem to be Solved]

Provided is a polyvinylidene fluoride resin-made porous membrane having excellent hydrophilicity, permeability, and fouling resistance and having suppressed elution of vinyl ether copolymer by using a small amount of vinyl ether copolymer.

[Means to Solve the Problem]

The porous membrane according to the invention comprises a polyvinylidene fluoride resin as a matrix material and a vinyl ether copolymer, wherein the vinyl ether copolymer is a copolymer of an oxyethylene group-containing vinyl ether monomer and a hydrocarbon group-containing vinyl ether monomer.

There is provided a packaging material comprising a fibre based substrate and a gas barrier layer based on a polyvinyl alcohol (PVOH), wherein said gas barrier layer comprises an interpolymer complex forming agent (IPCFA), which IPCFA is a water-soluble polymer exhibiting functional groups capable of forming hydrogen bonds with —OH groups of the PVOH. Said PVOH has a weight average molecular weight (M.sub.w) measured according to ASTM D4001-13 in the range of about 80 kg/mol to 135 kg/mol, the proportion of said IPCFA to PVOH in said gas barrier layer is in the range of 0.5 to 7.0% (w/w) and said packaging material has an oxygen permeability (OP) below 14 ml μm/m.sup.2 day atm, which OP is obtained by multiplying the oxygen transmission rate (OTR) of the packaging material measured according to ASTM F1927-7 at a relative humidity (RH) of 80% and 23° C. by the thickness of the gas barrier layer.

The object of the present invention is to provide a decorative film excellent in moldability and tensile strength; and a method for producing a three-dimensionally molded article with a decorative film. The decorative film of the present invention is used for decorating a three-dimensionally molded article. It is a decorative film comprising at least a substrate film layer and a clear layer, wherein the clear layer is made of a fluorinated polymer comprising units based on a fluoroolefin, units based on a monomer having no crosslinkable group, which is at least one member selected from the group consisting of a vinyl ether, a vinyl ester, an allyl ether, an allyl ester and a (meth)acrylic acid ester, and units having a crosslinkable group; and the content of the units based on a fluoroolefin is from 20 to 70 mol % to all units which the fluorinated polymer comprises.

There is provided a method for the production of a packaging material comprising a substrate and a gas barrier layer based on polyvinyl alcohol (PVOH), said method comprising the steps of—applying a coating composition of said PVOH dissolved in a first solvent onto said substrate to form a coating—subjecting the coating to a first drying step to form a dried PVOH-based coating on said substrate, contacting the dried PVOH-based coating with a crosslinking solution comprising a crosslinking agent in a second solvent, to effect crosslinking of the PVOH-based coating, and—subsequent to the contact with the crosslinking solution, subjecting the PVOH-based coating to a second drying step, forming the PVOH-based barrier layer on said substrate, with the proviso that if the crosslinking solution comprises PVOH, the amount of PVOH added by the crosslinking solution is less than 20% (by weight), such as less than 10% (by weight), of the amount of PVOH added by the coating composition.

There is provided a composition for a laminated material used for a medical lubricating member, the composition including a polymer b including a polysiloxane structure, a catalyst for crosslinking reaction, and a crosslinking agent having a particular structure. The polymer b includes at least one of an acrylic acid component, an acrylic acid ester component, an acrylamide component, or a styrene component and has a hydroxy group, a carboxy group, an amino group, an isocyanate group, an oxazolinyl group, an epoxy group, a vinyl group, an ethynyl group, a sulfanyl group, an azide group, a trialkoxysilyl group, or an acid anhydride structure. There are also provided a laminated material and a medical lubricating member produced from the composition, a medical device including the laminated material and the medical lubricating member, and a method for producing the laminated material and the medical lubricating member.

Polymeric superporous hydrogels, methods for making the same, and wound dressings incorporating the same are disclosed herein. The polymeric superporous hydrogels may be PVA-based hydrogel foams. The polymeric superporous hydrogels may exhibit intrinsic antimicrobial activity against Gram-positive bacteria. The polymeric superporous hydrogels may be well suited for incorporation into wound dressings or the like.

The object of the present invention is to provide a decorative film excellent in moldability and tensile strength; and a method for producing a three-dimensionally molded article with a decorative film. The decorative film of the present invention is used for decorating a three-dimensionally molded article. It is a decorative film comprising at least a substrate film layer and a clear layer, wherein the clear layer is made of a fluorinated polymer comprising units based on a fluoroolefin, units based on a monomer having no crosslinkable group, which is at least one member selected from the group consisting of a vinyl ether, a vinyl ester, an allyl ether, an allyl ester and a (meth)acrylic acid ester, and units having a crosslinkable group; and the content of the units based on a fluoroolefin is from 20 to 70 mol % to all units which the fluorinated polymer comprises.

To provide a curable composition capable of obtaining a cured product excellent in outer appearance and abrasion resistance; a cured product excellent in outer appearance and abrasion resistance; a prepreg capable of obtaining a fiber-reinforced molded product excellent in outer appearance and abrasion resistance; and a fiber-reinforced molded product excellent in outer appearance and abrasion resistance. The curable composition comprises a thermosetting resin, a fluororesin powder and a curing agent, wherein the fluororesin powder is made of a resin material containing a melt-moldable fluororesin having a melting point of from 100 to 325? C. and having functional groups of at least one type selected from the group consisting of carbonyl group-containing groups, hydroxy groups, epoxy groups and isocyanate groups, and in 100 mass % of the total of the thermosetting resin and the fluororesin powder, the proportion of the thermosetting resin is from 70.0 to 99.9 mass % and the proportion of the fluororesin powder is from 0.1 to 30 mass %.