The present disclosure provides tunable fluoropolymers and methods for making them.

A super absorbent polymer and a method for producing the same are disclosed herein. In some embodiments, the super absorbent polymer includes a base polymer powder including a cross-linked polymer, and first and second surface cross-linked layers formed on the base polymer powder. The first and second surface cross-linked layers are formed by further cross-linking the cross-linked polymer in the presence of a surface crosslinking agent, wherein the first and second surface cross-linked layers each include a cross-linked structure derived from epoxy-based and non-epoxy-based surface crosslinking agents. The super absorbent polymer can exhibit excellent absorbent properties even in a swollen state and thus exhibit excellent anti-rewetting effects. Accordingly, when the super absorbent polymer is used, it is possible to provide a sanitary material such as a diaper or a sanitary napkin which can give a smooth touch feeling even after the body fluid is discharged.

A biodegradable polymer includes starch groups, a polyvinyl alcohol (PVA) backbone having a crosslinked layered configuration and a Schiff base structure bonded to the starch groups. The PVA backbone has double bonds, and the starch groups have reversible acetal linkages. The biodegradable polymer is produced by mixing starch and water; mixing partially hydrolyzed polyvinyl alcohol (PVA) and water; mixing the starch solution with the PVA solution; mixing in a catalyst; and mixing in a cross-linking agent and a dialdehyde.

The invention relates to a crosslinkable prepolymer composition for use as a contrast layer. It also relates to a method for structuring an interface material. This method is characterized in particular by the following steps: depositing, on a block copolymer film, a prepolymer composition layer comprising a plurality of functional monomers and at least one crosslinkable functional group within its polymer chain and, on the other hand, two chemically different crosslinking agents, each agent being capable of initiating the crosslinking of said prepolymer in response to a stimulation specific thereto, subjecting the stack to a first stimulation localized on first areas, so as to cause a crosslinking reaction of the molecular chains of said prepolymer, and subjecting the stack to a second stimulation, so as to cause crosslinking of the molecular chains of said prepolymer by the action of said second crosslinking agent in secondary areas.

The present disclosure relates to an encapsulant film made from a curable composition comprising: (A) a polyolefin polymer; (B) an organic peroxide; (C) a silane coupling agent; and (D) a co-agent comprising a monocyclic organosilazane of formula (I).

A curable organopolysiloxane composition containing dynamic covalent organopolysiloxanes which yields, upon cure, a silicone rubber having adaptive elastomeric and viscous characteristics is claimed. The silicone may be an elastomer or foam. A method of making the silicone rubber and a shaped article made of the cured adaptive viscoelastic silicone rubber composition are also claimed.

Provided is a conductive particle including a core-shell particle having superior elasticity. The core-shell particle is provided with a core part and a shell part that covers the surface of the core part, wherein the core part is formed by an elastic body, and the shell part is formed by the cured product of a composition including a curing agent and a polyimide.

A shunt prosthesis comprises a synthetic tube having an inner wall defining a fixed inner diameter of the synthetic tube and a layer of hydrogel of a predetermined thickness coating the inner wall of the synthetic tube such that the layer of hydrogel has a fixed outer diameter and such that an inner diameter of the layer of hydrogel defines a diameter of a lumen extending through and defined by the shunt prosthesis. The layer of hydrogel being configured such that the predetermined thickness of the layer of hydrogel is reducable in vivo over a predetmined period of time by controlling the crosslinking density of the layer of hydrogel. A method of controlling flow through a shunt prosthesis is also provided.

There is provided herein a composition comprising (a) a mercapto-functional silicon compound having the general Formula (I): ##STR00001##
and a reactive resin containing at least one epoxy and/or (meth)acrylate group. There is also provided a silylated resin resulting from the reaction product of mercapto-functional silicon compound (a) and reactive resin contain at least one epoxy and/or (meth)acrylate groups.

There is disclosed an elastomeric styrenic block copolymer (SBC) composition comprising one or more SBCs and one or more polymers miscible with styrenic end blocks of the one or more SBCs; wherein said block copolymer composition is both physically and chemically crosslinked; wherein said chemical crosslinking comprises covalent bonds between chains of SBC and; wherein said physical crosslinking comprises non-covalent interaction between styrenic end blocks of the one or more SBCs and the one or more polymers miscible with the styrenic end blocks.

Also disclosed is a miscible polymer blend comprising one or more SBCs and one or more polymers miscible with styrenic end blocks of the one or more SBCs; wherein said miscible polymer blend is both physically and chemically crosslinked; wherein said chemical crosslinking comprises covalent bonds between chains of SBC and; wherein said physical crosslinking comprises non-covalent interaction between styrenic end blocks of the one or more SBCs and the one or more polymers miscible with the styrenic end blocks.

The herein disclosed unique compositions or blends comprising physically and chemically cross-linked styrene block copolymers find use in, for example, the manufacture of thin-walled dipped articles such as condoms or gloves. The unique compositions or blends overcome the shortcoming of chemical resistance in presently available SBCs while maintaining a high level of mechanical resistance and flexibility.