The present disclosure provides a phosphorus-containing compound, which includes a structure represented by formula (I). Formula (I) is defined as in the specification. The present disclosure further provides a flame-retardant thermoset made by the phosphorus-containing compound including the structure represented by formula (I). The present disclosure also provides a manufacturing method for the phosphorus-containing compound.

A polymer having a structural unit represented by the following general formula (I), a flame-retardant composition comprising the polymer, and a method for producing the polymer.

##STR00001##

In the general formula (I), R.sup.1 represents any one selected from the group consisting of an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, and an aralkyl group having 7 to 18 carbon atoms; R.sup.2 represents a hydrogen atom or a methyl group; R.sup.3 and R.sup.4 each independently represent any one selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkyloxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, an aralkyloxy group having 7 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an aryloxy group having 6 to 12 carbon atoms, and R.sup.3 and R.sup.4 may be bonded to each other; and n is an integer of 0 to 5.

A polymer including a structural unit represented by the following general formula (I), a flame-retardant composition comprising the polymer, and a method for producing the polymer.

##STR00001##

In the general formula (I), R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 and R.sup.3 each independently represent any one selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkyloxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, an aralkyloxy group having 7 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an aryloxy group having 6 to 12 carbon atoms, and R 2 and R 3 may be bonded to each other; and n is an integer of 0 to 7.

The present invention provides epoxy resin compounds comprising a high phosphorus and oxazolidone content, methods to prepare these epoxy resin compounds, curable compositions comprising these epoxy resins, and cured epoxy resin compounds by curing the curable epoxy resin compounds comprising a high phosphorus and oxazolidone content.

A phosphorus-containing flame retardant, a preparation method thereof, a resin composition comprising the phosphorus-containing flame retardant and an article made therefrom are disclosed. The phosphorus-containing flame retardant is characterized by having the advantages of high phosphorus content, high resin compatibility, not increasing gel time of varnish and low water absorption rate, and is therefore suitable for use as a flame retardant of various resin materials.

The invention relates to a polymer which is useful as flame-retardant polymer. The invention also relates to a method of preparing said polymer and to a thermoplastic polymer composition comprising said polymer. The thermoplastic polymer composition can be used for the production of molded articles or yarns having excellent flame-retardant properties in order to ensure adequate fire protection.

The present invention provides epoxy resin compounds comprising a high phosphorus and oxazolidone content, methods to prepare these epoxy resin compounds, curable compositions comprising these epoxy resins, and cured epoxy resin compounds by curing the curable epoxy resin compounds comprising a high phosphorus and oxazolidone content.

There are provided compounds of Formula I, and pharmaceutically acceptable salts and esters thereof, and pharmaceutical compositions thereof, used for inhibition or modulation of the activity of cyclin dependent kinases (CDK) and/or glycogen synthase kinase-3 (GSK-3), for the treatment of disease states or conditions mediated by cyclin dependent kinases and/or glycogen synthase kinase-3, including cancers.

##STR00001##

The invention features compounds of the general formula (I) in which the variable groups are as defined herein, and to their preparation and use.

##STR00001##

Disclosed herein are compounds of formulas (I) and (II), Wherein R.sub.1, R.sub.2, R.sub.3 and (1) are as described herein. Methods of making compounds of formulas (I) and (II), curable compositions containing them and cured compositions containing them are also described. The compounds of formulas (I) and II are curing agents, fire retardants or both.

##STR00001##