A polymer including a first structural unit represented by Chemical Formula 1: ##STR00001## wherein L.sup.1, R.sup.1 to R.sup.5 and n1 in Chemical Formula 1 are the same as described in the detailed description.

Processes for increasing the chemical resistance of a surface of a formed article are disclosed. The formed article is produced from a polymeric composition comprising a photoactive additive containing photoactive groups derived from a monofunctional benzophenone. The surface of the formed article is then exposed to ultraviolet light to cause crosslinking of the photoactive additive and produce a crosslinked surface. The crosslinking enhances the chemical resistance of the surface. Various means for controlling the depth of the crosslinking are also discussed.

An eugenol, an abundant natural phenol and the primary component of clove oil, which is converted to a thermoset resin via a high yield, two-step reaction. Modest heating yields a thermoset material with thermal stability above 350 C., a glass transition temperature of 187 C. and water uptake of only 1.8%.

Processes for increasing the chemical resistance of a surface of a formed article are disclosed. The formed article is produced from a polymeric composition comprising a photoactive additive containing photoactive groups derived from a monofunctional benzophenone. The surface of the formed article is then exposed to ultraviolet light to cause crosslinking of the photoactive additive and produce a crosslinked surface. The crosslinking enhances the chemical resistance of the surface. Various means for controlling the depth of the crosslinking are also discussed.

A monomer represented by Chemical Formula 1:

##STR00001##

wherein in Chemical Formula 1, X.sup.1, X.sup.2, L.sup.1, Y.sup.1, Y.sup.2, R.sup.1 to R.sup.9, n1, and n2 are the same as described in the detailed description.

A monomer is represented by Chemical Formula 1:

##STR00001## wherein in Chemical Formula 1, X.sup.1 and X.sup.2 are independently O, C(O), or C(O)O, R.sup.1 to R.sup.10 are independently hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a substituted or unsubstituted silyl group, a hydroxy group, a halogen, a nitro group, or a combination thereof, and n1 and n2 are independently an integer ranging from 0 to 3.

A polymer including a first structural unit represented by Chemical Formula 1:

##STR00001## wherein L.sup.1, R.sup.1 to R.sup.5 and n1 in Chemical Formula 1 are the same as described in the detailed description.

Provided are a vinyl-modified organopolysiloxane useful as a raw material for radical polymerization reactions, especially for biodegradable polymers or copolymers, as well as a method for producing the same. A radical polymerizable polymer or radical polymerizable copolymer in which the vinyl-modified organopolysiloxane is at least a portion of the starting raw material, as well as uses thereof and a method of production, are also provided. A vinyl-modified organopolysiloxane having two or more vinyl-modified groups (R.sup.Ac) expressed by R.sup.1C(O)OCHCHR.sup.2 here R.sup.1 is a divalent organic group having 4 to 20 carbon atoms, R.sup.2 is a hydrogen atom or a methyl group) bonded to a silicon atom in the molecule and having a polyorganosiloxane structure; a radical polymerizable polymer or radical polymerizable copolymer, especially silicone elastomer particles made therefrom; and use thereof.

Disclosed herein are compositions including a cross-linked polycarbonate. The cross-linked polycarbonate may be derived from a polycarbonate having about 0.5 mol % to about 5 mol % endcap groups derived from a monohydroxybenzophenone. A plaque including the composition can achieve a UL94 5VA rating. Also disclosed herein are articles including the compositions, methods of using the compositions, and processes for preparing the compositions.

Disclosed herein are processes for preparing articles from compositions including a cross-linked polycarbonate. The cross-linked polycarbonate may be derived from a polycarbonate having about 0.5 mol % to about 5 mol % endcap groups derived from a monohydroxybenzophenone. The article is molded, then exposed to UV radiation. A plaque including the composition can achieve a UL94 5VA rating.