A oligomer and a lithium battery are provided. The oligomer is obtained by a polymerization reaction of a compound containing at least one ethylenically unsaturated group and a nucleophile compound. The compound containing at least one ethylenically unsaturated group is selected from a group consisting of a maleimide-based compound, an acrylate ester-based compound, a methacrylate ester-based compound, an acrylamide-based compound, a vinylamide-based compound and a combination thereof. The nucleophile compound is selected from a group consisting of monomaleimide, trithiocyanuric acid, hydantoin, hydantoin derivative, thiohydantoin, thiohydantoin derivative and a combination thereof.

The present invention provides a polymerizable compound having high storage stability without causing crystal precipitation when added to a polymerizable composition. The present invention also provides a polymerizable composition containing the compound. When the filmy polymer produced through polymerization of the polymerizable composition is irradiated with UV light, it hardly discolors or peels from substrate. Further, the present invention provides a polymer produced through polymerization of the polymerizable composition and an optically anisotropic body using the polymer.

The present invention provides a polymerizable compound having high storage stability without causing crystal precipitation when added to a polymerizable composition. The present invention also provides a polymerizable composition containing the compound. When the filmy polymer produced through polymerization of the polymerizable composition is irradiated with UV light, it hardly discolors or peels from substrate. Further, the present invention provides a polymer produced through polymerization of the polymerizable composition and an optically anisotropic body using the polymer.

The present invention relates to a binder for a lithium-sulfur secondary battery cathode, and a composition containing the same. The binder of the present application enables a cathode active material electrolyte to have excellent resistance.

The present invention generally relates to processes for converting an ester group to an acid group for polymers having a pendant ester of an acid group. This process is generally performed using an aqueous strong base.

The present invention generally relates to processes for converting an ester group to an acid group for polymers having a pendant ester of an acid group. This process is generally performed using an aqueous strong base.

A compound represented by the following formula (1): ##STR00001## wherein R.sup.1 is a 2n-valent group having 1 to 60 carbon atoms; R.sup.2 to R.sup.5 are each independently a linear, branched, or cyclic alkyl group having 1 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms and optionally having a substituent, a halogen atom, a nitro group, an amino group, a carboxylic acid group, a group in which a hydrogen atom of a hydroxy group is replaced with a vinylphenylmethyl group, a group selected from the group consisting of groups represented by the following formula (A), a thiol group, or a hydroxy group, wherein at least one of the R.sup.2 to the R.sup.5 is a group selected from a group represented by the formula (A); m.sup.2 and m.sup.3 are each independently an integer of 0 to 8; m.sup.4 and m.sup.5 are each independently an integer of 0 to 9, provided that m.sup.2, m.sup.3, m.sup.4, and m.sup.5 are not 0 at the same time; n is an integer of 1 to 4; and p.sup.2 to p.sup.5 are each independently an integer of 0 to 2: ##STR00002##

Novel stress-reducing crosslinking oligomers that have application in dental restoratives, thin films, hardcoats, composites, adhesives, and other uses subject to stress reduction are described. The addition-fragmentation process of crosslinking results in a chain-transfer event that provides novel polymers that may be further functionalized. In addition, the addition-fragmentation oligomer comprises pendent functional groups that bond to a substrate by forming an ionic or covalent bond, or etch the substrate by chemically removing some material from the substrate.

Dental material which contains at least one vinylcyclopropane of the general formulae I, ##STR00001##
in which A, B independently of each other are in each case OH or COOH; X, Y independently of each other are in each case O or NH; R.sup.1, R.sup.2 independently of each other are in each case H or an aliphatic linear or branched C.sub.1-C.sub.10 hydrocarbon radical which can be interrupted by O, S or an ester group; and n, m independently of each other are in each case 0, 1 or 2, wherein, if XYO, R.sup.1H and R.sup.2H, n+m1. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.

Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1):

##STR00001##

(wherein R.sub.1 represents a hydrogen atom or a methyl group, R.sub.2 represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms, m represents an integer of 0 to 5, and n represents an integer of 0 to 4).