Some variations provide a reworkable ionomer composition comprising: a polymer containing a plurality of ionic monomers disposed in a chain backbone of the polymer, wherein the ionic monomers have a monomer charge polarity that is either positive or negative; and a plurality of ionic species disposed within the chain backbone of the polymer, wherein the ionic species have opposite charge polarity compared to the monomer charge polarity, wherein the ionic species and the ionic monomers are ionically bonded, and wherein the ionic species are capable of undergoing a reversible oxidation-state transition of at least +1 or −1 when in the presence of a redox reagent. The polymer may be selected from the group consisting of polyurethanes, polyacrylates, polyamides, polyesters, polyureas, polyurethane-ureas, polysiloxanes, polycarbonates, and combinations thereof. Many options for ionic monomers and ionic species are disclosed. These reworkable ionomers are useful for many commercial applications, including coatings and polymer parts.

The present invention relates to a composition comprising a polymeric network having at least one unit of formula (I), (II), and/or (III); (I) (II) (III) wherein said composition is obtained by contacting at least one compound A comprising at least two functions selected from the group of function of formula X—C(═O)—CHR.sup.1—C(═O)—R.sup.2, —C(═O)—C—R.sup.2; or —C(═O)—CR.sup.1═CR.sup.2—NR.sup.4R.sup.5; wherein at least 25% by weight of compounds A have a functionality ≦5, with % by weight relative to the total weight of compounds A; with at least one compound B comprising at least one NH.sub.2, or NH.sub.3.sup.+ groups; wherein X, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, L.sup.1 and L.sup.2 have the same meaning as that defined in the claims. The present invention also relates to a compound comprising at least two units and at most 5 units of formula (I), (II), and/or (III); wherein R.sup.1, R.sup.2, R.sup.3, X, L.sup.1 and L.sup.2 have the same meaning as that defined in the claims. The present invention also relates to processes for preparing said composition and said compounds, to material, articles, and polymers comprising or using said compositions and compounds, and the use thereof.

##STR00001##

Provided are a macromolecular material excellent in mechanical strength and a production method therefor. A macromolecular material of the present invention has a structure crosslinked through host-guest interaction, and is obtained by a method including: a step of preparing a mixture of a host-group-containing macromolecular compound swollen or dissolved in a solvent and a guest-group-containing macromolecular compound swollen or dissolved in a solvent; and a step of mechanically kneading the mixture. As another aspect, a macromolecular material of the present invention is obtained by a method including: a step of swelling or dissolving a both host-group- and guest-group-containing macromolecular compound in a solvent; and a step of mechanically kneading the swollen or dissolved macromolecular compound.

The present invention relates to, in general, methods of fabricating a covalent organic framework (COF) and the COF thereof. In particular, the method comprises forming an acylhydrazone bond with an optionally substituted 2-alkoxybenzohydrazidyl moiety. The resultant COF has an x-ray diffraction 2-theta peak at about 3° with a full width half maximum (FWHM) of about 0.2° to about 0.4°.

The invention generally relates to the fields of drug delivery and cell capture. In particular, the invention relates to amphiphilic dendron-coils, micelles thereof and their use for drug delivery vehicles and/or cell capture.

Described herein are associative polymers capable of controlling one or more physical and/or chemical properties of non-polar compositions and related compositions, methods and systems.

The present invention relates to a composite having exceptional heat resistance and durability that exhibits quick response characteristics when used in an electrochromic device; an electrochromic device in which the composite is used; and a method for producing said composite and device. This composite contains an organic/metallic hybrid polymer that contains an organic ligand and a metal ion coordinated to the organic ligand, and an ionic liquid. The organic/metallic hybrid polymer forms ionic bonds with the ionic liquid. This electrochromic device comprises a first electrode, an electrochromic layer containing the composite, an electrolyte layer, and a second electrode.

An encoding/decoding apparatus and method using a low-density parity-check code (LDPC code) is disclosed. Basic column group information, serving as a set of information regarding positions of rows with weight 1, is extracted from a reference column in each column group of a predetermined parity-check matrix. Column group information transforms the positions of rows with weight 1 into positions whose lengths are within a required parity length. A parity-check matrix is generated according to the generated column group information. Data is enclosed or decoded based on the generated parity-check matrix.

Polymers include a monomer with a polyurethane, a supramolecular moiety, an elastomer moiety and a functional group that includes a —C═N— link. The polymers can be prepared and incorporated into a composition. The polymers can be double dynamic polymers, which present adhesive and self-healing properties. The polymers can also be recyclable.

Provided is a macromolecular material that has self-healing properties, excellent stretchability, and a high degree of freedom in the design of stretchability, strength, and hardness, and that can be produced by a simple method; and also provided is a method for producing the same. The macromolecular material of the present invention comprises a polymer having a host group and a guest group. The host group is a monovalent group formed by removing one hydrogen atom or hydroxy group from a cyclodextrin derivative. The polymer is a polymer of a monomer mixture containing a host group-containing polymerizable monomer, a guest group-containing polymerizable monomer, and a third polymerizable monomer, and the third polymerizable monomer contains a (meth)acrylic ester compound. The host group-containing polymerizable monomer and the guest group-containing polymerizable monomer have a property of being dissolved in the third polymerizable monomer.