Provided are a curable composition and an application thereof. The curable composition contains: a compound A having a polymerizable group (a) and an oxyfluoroalkylene group; a polymerization initiator; and a compound B having a polymerizable group different from the polymerizable group (a). The polymerizable group (a) in the compound A is at least one selected from the group consisting of a vinylphenyl group, a vinylphenyloxy group, a vinylbenzyloxy group, a vinyloxy group, a vinyloxycarbonyl group, a vinylamino group, a vinylaminocarbonyl group, a vinylthio group, an allyloxy group, an allyloxycarbonyl group, an allylamino group, an allylaminocarbonyl group, an allylthio group, an epoxy group, and an epoxycycloalkyl group.

The invention relates to ester-linked surface-modifying macromolecules and admixtures thereof as shown below by the representative compounds. The admixtures can be used in industrial and medical applications where enhanced surface properties are desirable (e.g., surface properties reducing or preventing biofouling, immobilization of biomolecules, or denaturation of certain biomolecules).

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The invention relates to ester-linked surface-modifying macromolecules and admixtures thereof as shown below by the representative compounds. The admixtures can be used in industrial and medical applications where enhanced surface properties are desirable (e.g., surface properties reducing or preventing biofouling, immobilization of biomolecules, or denaturation of certain biomolecules).

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The present invention provides a surfactant of formula (I): (A).sub.m-X-(B).sub.n (I) wherein X is a linking group; each A is N independently a fluorocarbon or a perfluoropolyether; each B is independently (II) wherein a is an integer between 3 and 50 and each R is independently C.sub.1-6 alkyl, CH.sub.2CH.sub.2OC.sub.1-6 alkyl or CH.sub.2CH(CH.sub.3)OC.sub.1-6 alkyl; m is an integer between 1 and 10; and n is an integer between 1 and 10.

##STR00001##

A method for purifying a specific trityl group-containing monodispersed polyethylene glycol from a mixture containing the trityl group-containing monodispersed polyethylene glycol and a specific ditritylated impurity. The method includes performing steps (A), (B) and (C). Step (A): a step of esterifying the hydroxyl group of the trityl group-containing monodispersed polyethylene glycol by a specific method; Step (B): a step of extracting the esterified compound by a specific method; and Step (C): a step of hydrolyzing the esterified compound to obtain the trityl group-containing monodispersed polyethylene glycol.

The present invention provides crosslinking pairs of hydrogel precursor polymers, dynamic covalent hydrogels prepared from such crosslinking pairs of hydrogel precursors, pharmaceutical compositions comprising such precursors or hydrogels and uses thereof in a variety of applications.

The present invention provides crosslinking pairs of hydrogel precursor polymers, dynamic covalent hydrogels prepared from such crosslinking pairs of hydrogel precursors, pharmaceutical compositions comprising such precursors or hydrogels and uses thereof in a variety of applications.

A resin composition of the present invention is a resin composition used for forming a stress relaxation layer (102) of a metal base copper-clad laminate (100) configured by laminating a metal plate (101), the stress relaxation layer (102), and a piece of copper foil (103) in this order, the resin composition including: an epoxy resin having a polyether structure; a phenoxy resin; and a heat dissipation filler, in which the resin composition satisfies a characteristic of a storage elastic modulus at 25° C. being equal to or more than 0.01 GPa and equal to or less than 1.6 GPa.

[Problem] To provide a method for efficiently producing a poly(ethylene glycol)-b-poly(halomethylstyrene), a novel poly(ethylene glycol)-b-poly(halomethylstyrene) produced using the method, and a derivative thereof.

[Solution] The target novel copolymer can be provided by introducing a functional group, which enables reversible addition-fragmentation chain transfer (RAFT) polymerization, to the ω terminal of poly(ethylene glycol) and copolymerizing the resulting poly(ethylene glycol) with a halomethylstyrene.

Provided is a self-restoring macromolecular material that not only has excellent stress relaxation but that can also be easily restored to its original state, even when damaged or severed. Also provided is a method for producing the self-restoring macromolecular material. The self-restoring macromolecular material contains a crosslinked structure that is formed by crosslinking a polymer containing at least a polyrotaxane molecule. The polyrotaxane molecule is formed so as to include a cyclic molecule 21 and a linear molecule that passes through an opening 21a of the cyclic molecule. The crosslinked structure 1 is crosslinked via a reversible bond between the cyclic molecule of the polyrotaxane molecule and a polymer molecule other than the polyrotaxane molecule.