A reversible crosslinking reactant composition is provided. The composition includes at least one furan-group-containing oligomer having a structure represented by Formula (I) and a bismaleimide compound having a structure represented by

##STR00001##

Formula (II), wherein the equivalent ratio of the furan group of the furan-group-containing oligomer having a structure represented by Formula (I) to the maleimide group of the bismaleimide compound having a structure represented by Formula (II) is from 0.5:1 to 1:0.5.

The invention provides a furan-modified compound or oligomer. The compound has a structure represented by Formula I:

##STR00001##

When formula I represents a compound, x is an integer of 15; A including a group formed of ketone, amido, imide, imido, phenyl ether or enol ether group; G is a direct bond, O, N, ArNH(CH.sub.2).sub.b, ArO(CH.sub.2).sub.b, ArO(CH.sub.2).sub.aNH(CH.sub.2).sub.b, (CH.sub.2).sub.aNH(CH.sub.2).sub.b, (CH.sub.2).sub.aO(CH.sub.2).sub.b or (CH.sub.2).sub.aCH(OH)(CH.sub.2).sub.bNH; Ar is substituted or unsubstituted arylene group; a is an integer of 1 to 5; and b is an integer of 0 to 5.

The present invention is to provide polyether compounds having epoxy hydroxyl urethane group, as the following formula (I), (II) or (III) shows: ##STR00001##
and waterborne epoxy resin composition. Using the hydroxyl urethane as emulsifier, the obtained waterborne epoxy resin composition of the present invention has better stability and freeze-thaw resistance.

A polyrotaxane represented by Formula (1):

##STR00001##

wherein R.sup.1 is a hydrogen atom or a methyl group, m is 1 to 2000, and n is 10 to 500,

##STR00002##

is a cyclodextrin in which at least one hydroxyl group is modified with a group represented by XNH.sub.2, and X is a divalent organic group.

This disclosure relates to polymersomes comprising a crosslinked polymer and their use as drug delivery vehicles. Specifically, polymersomes comprising a polymer of Formula I: ##STR00001##
wherein each R is independently C.sub.1-6 alkyl; and n is an integer between 1 and 50.

The present invention relates to micellar nanocomplexes and a method of forming the same. The micellar nanocomplex comprises a micelle and an agent encapsulated within said micelle, where the micelle comprises a polymer-flavonoid conjugate, wherein said polymer is bonded to the B ring of said flavonoid. The micellar nanocomplex may have useful applications as a drug-delivery system.

Provided herein are polymeric -hydroxy aldehyde or -hydroxy ketone reagents which can be conjugated to amine-containing compounds to form stable conjugates in a single-step reaction. In selected embodiments, the polymeric reagent itself incorporates an internal proton-abstracting (basic) functional group, to promote more efficient reaction. The substituent is appropriately situated, via a linker if necessary, to position the group for proton abstraction, preferably providing a 4- or 5-bond spacing between the abstracting atom and the hydrogen atom on the -carbon. Also provided are methods of using the reagents and stable, solubilized conjugates of the reagents with biologically active compounds. In preferred embodiments, the polymeric component of the reagent or conjugate is a polyethylene glycol.

The present invention provides a fluorine-containing ether compound that can form a lubricating layer which can increase chemical substance resistance of a magnetic recording medium even if the thickness is thin, and can be suitably used as a material for a lubricant for a magnetic recording medium. The fluorine-containing ether compound is represented by the following formula. R.sup.1CH.sub.2R.sup.2CH.sub.2OCH.sub.2CHR.sup.3CH.sub.2OCH.sub.2R.sup.4CH.sub.2R.sup.5 (in the formula, R.sup.2 and R.sup.4 are a perfluoropolyether chain; R.sup.1 and R.sup.5 are terminal groups which contain two or three hydroxyl groups, and in which respective hydroxyl groups are bonded to different carbon atoms, and carbon atoms to which the hydroxyl groups are bonded are bonded to each other via a linking group containing a carbon atom to which no hydroxyl group is bonded; R.sup.3 is represented by the following formula; and (CH.sub.2).sub.aOH (a is an integer of 2 to 8)).

It is provided a method for activating dendritic cells in vitro, comprising the following steps: a) providing a substrate, wherein a surface of the substrate comprises at least one poly(glycidyl ether) derivative according to general formula (i); b) contacting the substrate with a dendritic cell in an isosmotic aqueous solution or buffer.

The present invention relates to micellar nanocomplexes and a method of forming the same. The micellar nanocomplex comprises a micelle and an agent encapsulated within said micelle, where the micelle comprises a polymer-flavonoid conjugate, wherein said polymer is bonded to the B ring of said flavonoid. The micellar nanocomplex may have useful applications as a drug-delivery system.