UV-absorbing polymers are provided that have at least one anhydride repeating unit that is covalently attached to at least one UV-absorbing moiety selected from the group consisting of functionalized dibenzoylmethanes, benzophenone sulfonamides, triphenyl triazines, and combinations thereof. Also provided are formulations comprising the UV-absorbing polymers.

UV-absorbing polymers are provided that have at least one anhydride repeating unit that is covalently attached to at least one UV-absorbing moiety selected from the group consisting of functionalized dibenzoylmethanes, benzophenone sulfonamides, triphenyl triazines, and combinations thereof. Also provided are formulations comprising the UV-absorbing polymers.

In accordance with the present disclosure, there is provided a solid state graft copolymerization process for the preparation of disentangled ultrahigh molecular weight polyethylene graft copolymers in which disentangled ultrahigh molecular weight polyethylene is admixed with at least one functional monomer and a free radical initiator to obtain a mixture; and the mixture thus obtained is subjected to solid state polymerization to obtain a graft copolymer of disentangled ultrahigh molecular weight polyethylene. The graft copolymers of disentangled ultrahigh molecular weight polyethylene shows better crystallization temperature that ranges between 117 C. to 121 C. and improved decomposition temperature (T.sub.100) that ranges between 460 C. to 480 C.

In accordance with the present disclosure, there is provided a solid state graft copolymerization process for the preparation of disentangled ultrahigh molecular weight polyethylene graft copolymers in which disentangled ultrahigh molecular weight polyethylene is admixed with at least one functional monomer and a free radical initiator to obtain a mixture; and the mixture thus obtained is subjected to solid state polymerization to obtain a graft copolymer of disentangled ultrahigh molecular weight polyethylene. The graft copolymers of disentangled ultrahigh molecular weight polyethylene shows better crystallization temperature that ranges between 117 C. to 121 C. and improved decomposition temperature (T.sub.100) that ranges between 460 C. to 480 C.

A coupling agent having at least two alkenylbenzene groups each covalently bonded with a nitrogen of an amine compound. The coupling agent can have the structure I:

##STR00001##

wherein

Z is an amine;

R.sub.1-R.sub.10 are each, independent of one another, H, an organic functional group or a terminal alkene, wherein at least one terminal alkene is on each benzene ring;

m is an integer from 1 to 8.

A process for preparing a stabilized fabricated article from a polyolefin resin, the process includes incorporating functional groups in the polyolefin resin thereby yielding a polyolefin resin having crosslinkable functional groups. The polyolefin resin having crosslinkable functional groups is converted to a fabricated article. The fabricated article is chemically crosslinked thereby yielding a crosslinked fabricated article. The crosslinked fabricated article is stabilized in an oxidizing environment at an elevated temperature. The stabilized fabricated article thus produced can be prepared as a carbonaceous article by heating the stabilized fabricated article in an inert environment.

A process for preparing a stabilized fabricated article from a polyolefin resin, the process includes incorporating functional groups in the polyolefin resin thereby yielding a polyolefin resin having crosslinkable functional groups. The polyolefin resin having crosslinkable functional groups is converted to a fabricated article. The fabricated article is chemically crosslinked thereby yielding a crosslinked fabricated article. The crosslinked fabricated article is stabilized in an oxidizing environment at an elevated temperature. The stabilized fabricated article thus produced can be prepared as a carbonaceous article by heating the stabilized fabricated article in an inert environment.

Provided are an electron beam curable resin composition including polymethylpentene, and a crosslinking agent, in which the crosslinking agent has a saturated or unsaturated ring structure, at least one atom among atoms forming at least one ring is bonded to any allylic substituent of an allyl group, a methallyl group, an allyl group through a linking group, and a methallyl group through a linking group, and a molecular weight is 1,000 or less, a resin frame for reflectors using the resin composition, a reflector, and a molding method using the resin composition.

Provided are an electron beam curable resin composition including polymethylpentene, and a crosslinking agent, in which the crosslinking agent has a saturated or unsaturated ring structure, at least one atom among atoms forming at least one ring is bonded to any allylic substituent of an allyl group, a methallyl group, an allyl group through a linking group, and a methallyl group through a linking group, and a molecular weight is 1,000 or less, a resin frame for reflectors using the resin composition, a reflector, and a molding method using the resin composition.

UV-absorbing polymers are provided that have at least one anhydride repeating unit that is covalently attached to at least one UV-absorbing moiety selected from the group consisting of functionalized dibenzoylmethanes, benzophenone sulfonamides, triphenyl triazines, and combinations thereof. Also provided are formulations comprising the UV-absorbing polymers.